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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5125. Отображено 100.
16-05-2013 дата публикации

ALLOY CAST IRON AND MANUFACTURING METHOD OF VANE USING THE SAME

Номер: US20130118651A1
Автор: PARK Jaebong
Принадлежит: LG ELECTRONICS INC.

An alloy cast iron, a method of manufacturing a vane for a rotary compressor, and a vane for a rotary compressor using the alloy cast iron are disclosed. The alloy cast iron according to one exemplary embodiment includes, by weight, 3.2 to 3.8% carbon, 2.0 to 2.6% silicon, 0.5 to 1.0% Manganese, 0.2 to 0.6% chrome, 0.1 to 0.6% molybdenum, 0.04 to 0.15% titanium, less than 0.3% phosphorus, less than 0.1% sulphur, and the rest percentage of iron and foreign materials, wherein the alloy cast iron includes a martensitic matrix structure, flake graphite, and 15 to 30% carbide in volume ratio. 1. An alloy cast iron comprising , by weight:3.2 to 3.8% carbon (C);2.0 to 2.6% silicon (Si);0.5 to 1.0% manganese (Mn);0.2 to 0.6% chrome (Cr);0.1 to 0.6% molybdenum (Mo);0.04 to 0.15% titanium(Ti);less than 0.3% phosphorus (P);less than 0.1% sulphur (S); anda remainder of iron (Fe) and foreign materials,wherein the alloy cast iron comprises a martensitic matrix structure, flake graphite, and 15 to 30% carbide in volume ratio.2. The alloy cast iron of claim 1 , further comprising an inoculant added in a molten state.3. The alloy cast iron of claim 2 , wherein the inoculant is added by 0.4 to 1.0% of the mass of the molten mass.4. The alloy cast iron of claim 1 , wherein the alloy cast iron is formed by cooling the molten metal in a cast to transform into the martensitic matrix structure through quenching and tempering.5. The alloy cast iron of claim 4 , wherein the quenching is carried out by keeping the alloy cast iron at a temperature of 860 to 950° C. for 0.5 to 1.5 hours and cooling the alloy cast iron to room temperature.6. The alloy cast iron of claim 4 , wherein the tempering is carried out by keeping the quenched alloy cast iron at a temperature of 180 to 220° C. for 0.5 to 1.5 hours claim 4 , and cooling the alloy cast iron to room temperature.7. The alloy cast iron of claim 4 , further comprising a sulfurized layer having a thickness of 0.005 to 0.0015 mm claim 4 , the ...

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Номер записи: 1
16-05-2013 дата публикации

ALLOY CAST IRON AND MANUFACTURING METHOD OF ROLLING PISTON USING THE SAME

Номер: US20130118652A1
Автор: PARK Jaebong
Принадлежит: LG ELECTRONICS INC.

An alloy cast iron, and a method of manufacturing a rolling piston for a rotary compressor includes, by weight, 3.0˜3.5% carbon (C), 2.2˜2.4% silicon (Si), 0.5˜1.0% manganese (Mn), 0.1˜0.3% phosphorus (P), 0.06˜0.08% sulfur (S), 0.7˜1.0% chrome (Cr), 0.6˜1.0% copper (Cu), and a residue formed of Fe and inevitable impurities, wherein 3˜8 vol % steadite structure is formed. 1. An alloy cast iron comprising , by weight:3.0˜3.5% carbon (C);2.2˜2.4% silicon (Si);0.5˜1.0% manganese (Mn);0.1˜0.3% phosphorus (P);0.06˜0.08% sulfur (S);0.7˜1.0% chrome (Cr);0.6˜1.0% copper (Cu); anda residue formed of Fe and inevitable impurities,wherein 3˜8 vol % steadite structure is formed.2. The alloy cast iron of claim 1 , wherein the alloy cast iron undergoes a thermal processing including quenching and tempering.3. The alloy cast iron of claim 2 , wherein the quenching is performed by maintaining the alloy cast iron at 900±10° C. for 90˜150 minutes claim 2 , then by oil-cooling the alloy cast iron to 50˜90° C. claim 2 , and then by maintaining the alloy cast iron at 50˜90° C. for 5˜7 hours.4. The alloy cast iron of claim 3 , wherein the tempering is performed by maintaining the alloy cast iron at 250±10° C. for 150˜210 minutes claim 3 , and then by cooling the alloy cast iron to room temperature in air.5. The alloy cast iron of claim 4 , wherein the tempered alloy cast iron has a Rockwell hardness of 45˜55.6. A method of manufacturing a rolling piston for a rotary compressor claim 4 , the method comprising:a melting step of preparing a molten metal comprising, by weight, 3.0˜3.5% carbon (C), 2.2˜2.4% silicon (Si), 0.5˜1.0% manganese (Mn), 0.1˜0.3% phosphorus (P), 0.06˜0.08% sulfur (S), 0.7˜1.0% chrome (Cr), 0.6˜1.0% copper (Cu), and a residue formed of Fe and inevitable impurities;a casting step of pouring the molten metal in a mold and cooling thereby preparing a semi-product in which 3˜8 vol % steadite structure is formed;a grinding step of grinding the cooled semi-product to a ...

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Номер записи: 2
16-05-2013 дата публикации

NODULAR GRAPHITE CAST IRON AND METHOD FOR FABRICATING VANE USING THE SAME

Номер: US20130122325A1
Автор: PARK Jaebong
Принадлежит: LG ELECTRONICS INC.

A nodular graphite cast iron, a method for fabricating a vane for a rotary compressor using nodular graphite cast iron, and a vane for a rotary compressor using the same are provided. The nodular graphite cast iron includes 3.4 wt % to 3.9 wt % of carbon (C), 2.0 wt % to 3.0 wt % of silicon (Si), 0.3 wt % to 1.0 wt % of manganese (Mn), 0.1 wt % to 1.0 wt % of chromium (Cr), 0.04 wt % to 0.15 wt % of titanium (Ti), less than 0.08 w% of phosphorus (P), less than 0.025 wt % of sulphur (S), 0.03 wt % to 0.05 wt % of magnesium (Mg), 0.02 wt % to 0.04 wt % of rare earth resource, iron (Fe) and impurities as the remnants, and includes a bainite matrix structure, nodular graphite, and 15 vol % to 35 vol % of carbide. 1. A nodular graphite cast iron comprising:3.4 wt % to 3.9 wt % of carbon ((C);2.0 wt % to 3.0 wt % of silicon (Si);0.3 wt % to 1.0 wt % of manganese (Mn);0.1 wt % to 1.0 wt % of chromium (Cr);0.04 wt % to 0.15 wt % of titanium (Ti);less than 0.08 w% of phosphorus (P);less than 0.025 wt % of sulphur (S);0.03 wt % to 0.05 wt % of magnesium (Mg);0.02 wt % to 0.04 wt % of rare earth resource;iron (Fe) and impurities as the remnants; anda bainite matrix structure, nodular graphite, and 15 vol % to 35 vol % of carbide.2. The nodular graphite cast iron of claim 1 , further comprising:a spheroidizing agent and an inoculant added to a molten state of the nodular graphite cast iron.3. The nodular graphite cast iron of claim 2 , wherein the spheroidizing agent is added in the amount of 1.0%˜1.8% of a mass of the molten nodular graphite cast iron.4. The nodular graphite cast iron of claim 1 , wherein the bainite matrix structure of the nodular graphite cast iron is obtained by transforming an austenite matrix structure through a heat treatment.5. The nodular graphite cast iron of claim 4 , wherein the heat treatment is performed by heating to a temperature ranging from 880° C. to 950° C. claim 4 , maintained at the temperature for 30 to 90 minutes claim 4 , maintained in ...

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Номер записи: 3
30-05-2013 дата публикации

HIGH MODULUS WEAR RESISTANT GRAY CAST IRON FOR PISTON RING APPLICATIONS

Номер: US20130134680A1
Автор: Gekonde Heron
Принадлежит:

A piston ring formed of cast iron provides improved machinability and exceptional performance and minimum costs. The cast iron includes 2.2 to 2.9 wt. % carbon, 3.2 to 4.2 wt. % silicon, 0.75 to 1.25 wt. % copper, 1.0 to 1.5 wt. % manganese, 0.09 to 0.15 wt. % sulfur, not greater than 0.2 wt. % phosphorous, and an average carbon equivalent of 3.8. The cast iron preferably includes a matrix of martensite with MnS and carbides dispersed therein. The matrix is also preferably free of ferrite, austenite, and steadite. The cast iron is formed by casting, autenitizing, quenching, and tempering the alloy. 1. A piston ring formed of a cast iron , comprising , in weight percent (wt. %) of said cast iron:2.2 to 2.9 wt. % carbon,3.2 to 4.2 wt. % silicon,0.75 to 1.25 wt. % copper,1.0 to 1.5 wt. % manganese,0.09 to 0.15 wt. % sulfur, andnot greater than 0.1 wt. % phosphorous, based on the total weight of said cast iron.2. The piston ring of wherein said cast iron comprises a matrix including at least one of martensite and bainite claim 1 , and including manganese sulfide (MnS) and carbides dispersed throughout said matrix.3. The piston ring of wherein said cast iron includes claim 2 , in vol. % of said cast iron claim 2 , the MnS in an amount of 0.5 to 1.5 vol. % claim 2 , based on the total volume of said cast iron.4. The piston ring of wherein said matrix includes claim 2 , in vol. % of said matrix claim 2 , said martensite in an amount of 80 to 90 vol. % claim 2 , based on the total volume of said matrix.5. The piston ring of wherein said matrix includes claim 2 , in vol. % of said matrix claim 2 , not greater than 5 vol. % ferrite claim 2 , austenite claim 2 , and steadite claim 2 , based on the total volume of said matrix.6. The piston ring of wherein said cast iron has an average carbon equivalent of 3.4 to 4.2.7. The piston ring of wherein said cast iron has an average carbon equivalent of 3.8.8. The piston ring of wherein said cast iron includes claim 1 , in wt. % of ...

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Номер записи: 4
01-08-2013 дата публикации

METAL-BASE ALLOY PRODUCT AND METHODS FOR PRODUCING THE SAME

Номер: US20130195709A1
Автор: Fredriksson Hasse, Makaya Advenit, Ranganathan Sathees, Solaimanzadeh-Azar Sohrab
Принадлежит: SUPERIOR METALS SWEDEN AB

A metal base alloy and methods for producing the alloy. The metal base alloy product includes the formula MeTSiCrMnj VCf, wherein—Meis a metal base selected from the group having Fe, Co and Ni, in an amount ranging from about 45-75 w %. The metal base alloy product contains a substantially homogenous dispersion of separate precipitated carbide particles in an amount ranging from 10-65 percentages by volume and the precipitate carbide particles have an average diameter of 0.01-5 micrometers. 2. Metal base alloy product according to wherein said precipitated carbide particles are substantially spherical carbides having an average diameter of 0.1-5 micrometer.3. Metal base alloy according to claim 1 , wherein said precipitated carbide particles are a mixture of substantially spherical carbides having an average diameter of 0.5-5 micrometer and of nano-crystalline carbides having an average size of 0.01-0.5 micrometer.4. Metal base alloy according to claim 1 , wherein said precipitated carbide particles are surrounded by a matrix of ferrite and/or austenite.5. Metal base alloy according to claim 1 , wherein said alloy has a tensile strength of at least about 800 MPa.6. A metal base alloy according to claim 1 , wherein the Meis Fe present in an amount from about 45-75 w %.7. A metal base alloy according to claim 1 , wherein the Tis Mo present in an amount from about 5-10 w %.8. A method to produce a metal base alloy product consisting of the formula MeTSiCrMnVC claim 1 , wherein{'sub': 'base', 'Meis a metal base selected from the group consisting of Fe, Co and NI, in an amount ranging from about 45-75 w %,'}{'sub': 'a', 'Tis an alloying material selected from the group consisting of Mo, Nb and Ta in an amount a ranging from about 5-10 w %,'}{'sub': 'b', 'Siis a further alloying member in an amount b ranging from about 4-10 w %,'}{'sub': 'c', 'Cris a further alloying member in an amount c ranging from about 8-30 w %,'}{'sub': 'd', 'Mnis a further alloying member in an ...

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Номер записи: 5
01-08-2013 дата публикации

METHOD FOR REMOVING IMPURITIES IN MOLTEN CAST IRON, AND CAST IRON RAW MATERIAL

Номер: US20130195712A1
Автор: Atsumi Tatsuo, Fujikawa Takao, Kang Ilgoo, Kanno Toshitake, Kinoshita Kiyoshi, Murata Hirotoshi, Takeuchi Hiromitsu, Yamamoto Nobuya
Принадлежит:

There is provided a method for obtaining a pure melt in which the impurities Mn, Al, Ti, Pb, Zn, and B are removed from molten cast iron and depletion of useful C and Si is suppressed, the method wherein an excess oxygen flame having a theoretical combustion ratio of fuel and oxygen (amount of oxygen (volume)×5/amount of fuel (volume)) of 1 to 1.5 is directly exposed to the surface of pre-melted molten cast iron, the temperature of the molten cast iron is held at 1250° C. or more and less than 1500° C. while the melt surface is superheated and an acidic slag is brought into contact with the melt, and an oxygen-containing gas is injected into the interior of the molten cast iron. 1. A method for removing impurities including manganese (Mn) while suppressing the depletion of carbon (C) and silicon (Si) included in pre-melted molten cast iron , the method for removing impurities in molten cast iron characterized in comprising: holding the temperature of the molten cast iron at 1250° C. or more and less than 1500° C.; and directly exposing a surface of the molten cast iron to an excess oxygen flame having a theoretical combustion ratio of fuel and oxygen (amount of oxygen (volume)×5/amount of fuel (volume)) of 1 to 1.5 while allowing the melt and an acidic slag layer to come into contact with each other to superheat the surface.2. The method for removing impurities in molten cast iron of claim 1 , characterized in being a method in which (ΔC/ΔMn) or (ΔSi/ΔMn) is 2.5 or less when the removal efficiency per unit time of the manganese (Mn) is (ΔMn/h) claim 1 , the removal efficiency per unit time of the carbon (C) is (ΔC/h) claim 1 , and the removal efficiency per unit time of the silicon (Si) is (ΔSi/h).3. The method for removing impurities in molten cast iron of or claim 1 , characterized in that an oxygen-containing gas is injected from the interior of the molten cast iron to a surface of the molten cast iron on which the excess oxygen flame is directly exposed.4. The ...

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Номер записи: 6
07-11-2013 дата публикации

GREY IRON ALLOY AND BRAKE DISC CONTAINING GREY IRON ALLOY

Номер: US20130292217A1
Автор: Erhav Dan, Hammerström Lars, Skoglund Peter, Stenfors Sven-Eric, Tamminen Jarmo, Thibblin Anders, Wilberfors Fredrik
Принадлежит:

The invention relates to a grey iron alloy having (in wt %): 1. A grey iron alloy comprising (in wt %):C: ≦4.2%Si: <1.30%Mn: 0.4−0.8%Nb: 0.05−0.4%Cr: ≦0.4%Cu: ≦0.7%V+Ti+Mo: ≦0.4%P: <0.05%S: <0.1%with a remainder of said alloy comprising Fe and naturally occurring impurities, and having a degree of saturation Sc, expressed as % C/(4.26−0.317*(% Si)+0.027(% Mn)−0.3(%P))>1.2. The grey iron alloy according to claim 1 , having a C content of 3.9−4.1%.3. The grey iron alloy according to having a Si content of 1−1.25%.4. The grey iron alloy according to claim 1 , having a Mn content of 0.5−0.7%.5. The grey iron alloy according to claim 1 , having a Nb content of 0.1−0.4%.6. The grey iron alloy according to claim 1 , having a Nb content of 0.15−0.35%.7. The grey iron alloy according to claim 1 , having a Cr content of 0−0.2%.8. The grey iron alloy according to claim 1 , having a Cu content of 0.4−0.6%.9. The grey iron alloy according to claim 1 , having a V content of ≦0.2%.10. The grey iron alloy according to claim 1 , having a Ti content of ≦0.05%.11. The grey iron alloy according to claim 1 , having a Mo content of ≦0.3%.12. The grey iron alloy according to claim 1 , having a S content of<0.08%.13. The grey iron alloy according to claim 1 , having a P content of<0.025%.14. A brake disc comprised of a grey iron alloy according to . The present invention relates to a grey iron alloy according to the preamble of claim . The invention relates also to a brake disc which contains the grey iron alloy according to the invention.Grey iron is a type of cast iron whose structure consists of graphite flakes, so-called lamellar graphite, in for example a perlitic matrix. This structure gives the grey iron good characteristics with regard to vibration absorption and heat conduction, making it a suitable material for brake discs.Brake discs are subject to substantial loads when the vehicle's kinetic energy is converted to heat in them during braking. Repeated braking operations may ...

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Номер записи: 7
02-01-2014 дата публикации

HIGH RIGIDITY, HIGH DAMPING CAPCITY CAST IRON

Номер: US20140000832A1
Автор: FUJIMOTO Ryousuke, SAKAMOTO Naoki, TAKAHASHI Sakae
Принадлежит: TOSHIBA KIKAI KABUSHIKI KAISHA

A high rigidity, high damping capacity cast iron, which is a cast iron containing 3 to 7% of Al, and produced by heating at 280 to 630° C. after casting, and then cooling. 1. A method of producing a high rigidity , high damping capacity cast iron , comprising:casting a cast iron comprising 3 to 7 mass % of Al;heating the cast iron at a temperature falling within a range of 280 to 630° C.; andcooling the cast iron.2. The method according to claim 1 , wherein the cast iron comprises 3 to 7 mass % of Al claim 1 , 0.25 to 1.0 mass % of Mn claim 1 , 0.04 mass % or less of P claim 1 , 0.03 mass % or less of S claim 1 , and the balance of Fe and inevitable impurities.3. The method according to claim 1 , wherein the temperature falls within a range of 360 to 580° C.4. A method of producing a high rigidity claim 1 , high damping capacity cast iron claim 1 , comprising:casting a cast iron comprising 3 to 7 mass % of Al and 0.03 to 0.20 mass % of Sn;heating the cast iron at a temperature falling within a range of 280 to 630° C.; andcooling the cast iron.5. The method according to claim 4 , wherein the cast iron comprises 3 to 7 mass % of Al claim 4 , 0.25 to 1.0 mass % of Mn claim 4 , 0.04 mass % or less of P claim 4 , 0.03 mass % or less of S claim 4 , 0.03 to 0.20 mass % of Sn claim 4 , and the balance of Fe and inevitable impurities.6. The method according to claim 4 , wherein the temperature falls within a range of 360 to 580° C.7. A method of producing a high rigidity claim 4 , high damping capacity cast iron claim 4 , comprising:casting a cast iron comprising 3 to 7 mass % of Al, and C and Si in such amounts that a carbon equivalent represented by formula (1) below is from 3.30 to 3.95;heating the cast iron at a temperature falling within a range of 280 to 630° C.; and {'br': None, 'carbon equivalent (mass %)=C content (mass %)+(⅓)×Si content (mass %)'}, 'cooling the cast iron, wherein formula (1) is as follows8. The method according to claim 7 , wherein the cast iron ...

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Номер записи: 8
23-01-2014 дата публикации

Alloy, corresponding part and manufacturing method

Номер: US20140023548A1
Автор: Jean-Baptiste Prunier
Принадлежит: Ferry-Capitain Sarl

A spheroidal graphite cast iron alloy comprises, in % by weight, in addition to addition elements, the following elements: Ni between 3.5% and 7%, Cu between 0.5% and 3%, Mo between 0.15% and 1%, the remainder being iron and inevitable impurities. The spheroidal graphite cast iron alloy may be used in manufacturing a part such as cogwheels and gear rims. The method of manufacturing the part may comprise casting a rough casting blank, notably into a mold, and letting the rough casting blank cool in the mold, thus obtaining the part.

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Номер записи: 9
30-01-2014 дата публикации

CAST IRON CONTAINING NIOBIUM AND COMPONENT

Номер: US20140030133A1
Автор: Dekker Lutz, Günther Guido, Janssen Stefan, Lange Susanne, Scholz Alfred, Sheng Shilun, Tonn Babette, Vierbaum Mark, Wanjura Stefan
Принадлежит:

Known cast iron alloys have use limits in respect of the temperature. An alloy (in a weight percentage) including silicon 2.0%-4.5%, carbon 2.9%-4.0%, niobium 0.05%-0.7%, molybdenum 0.3%-1.5%, optionally cobalt 0.1%-2.0%, manganese≦0.3%, nickel≦0.5%, magnesium≦0.07%, phosphorus≦0.05%, sulphur≦0.012%, chromium≦0.1%, antimony≦0.004%, and, iron, is provided. 118-. (canceled)21. The alloy as claimed in claim 19 , further comprising 0.1% by weight-0.2% by weight niobium.22. The alloy as claimed in claim 19 , further comprising 0.4% by weight-0.6% by weight niobium.23. The alloy as claimed in claim 20 , wherein the alloy does not comprise cobalt.24. The alloy as claimed in claim 20 , wherein the alloy comprises 0.4% by weight to 0.6% by weight cobalt.25. The alloy as claimed in claim 20 , wherein the alloy comprises 0.9% by weight to 1.0% by weight cobalt.26. The alloy as claimed in claim 20 , wherein the alloy comprises 1% by weight to 2% by weight cobalt.27. The alloy as claimed in claim 20 , wherein the alloy comprises 0.1% by weight cobalt.28. The alloy as claimed in claim 21 , wherein a proportion of silicon claim 21 , cobalt claim 21 , molybdenum and niobium is less than 6.5% by weight of the alloy.29. The alloy as claimed in claim 21 , wherein a proportion of molybdenum and niobium does not exceed 1.5% by weight of the alloy.30. The alloy as claimed in claim 19 , wherein the alloy comprises 2.0% by weight-3.0% by weight silicon.31. The alloy as claimed in claim 19 , wherein the alloy comprises 3.0% by weight-4.5% by weight silicon.32. The alloy as claimed in claim 19 , wherein the alloy contains no nickel except as a possible impurity.33. The alloy as claimed in claim 20 , wherein the alloy comprises at least 0.01% by weight nickel.34. The alloy as claimed in claim 19 , wherein the alloy comprises 2.5% by weight to 3.7% by weight carbon.35. The alloy as claimed in claim 19 , wherein the alloy comprises no chromium except as a possible impurity.36. The alloy as ...

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Номер записи: 10
03-04-2014 дата публикации

CAST IRON CONTAINING NIOBIUM AND COMPONENT

Номер: US20140093416A1
Автор: Dekker Lutz, Günther Guido, Janssen Stefan, Michel Susanne, Scholz Alfred, Sheng Shilun, Tonn Babette, Vierbaum Mark, Wanjura Stefan
Принадлежит:

An alloy is provided. The alloy comprises (in % by weight): 3. The alloy as claimed in claim 1 , wherein the alloy comprises 0.05% by −0.2% by weight niobium.4. The alloy as claimed in claim 1 , wherein the alloy comprises 0.4% by −0.6% by weight niobium.5. The alloy as claimed in claim 1 , wherein the alloy comprises 0.4% to 0.6% by weight cobalt.6. The alloy as claimed in claim 1 , wherein the alloy comprises 0.9% to 1.1% by weight cobalt.7. The alloy as claimed in claim 1 , wherein the proportion of silicon claim 1 , cobalt claim 1 , molybdenum claim 1 , and niobium is less than 6.5% by weight of the alloy.8. The alloy as claimed in claim 1 , wherein the proportion of molybdenum and niobium does not exceed 1.5% by weight of the alloy.9. The alloy as claimed in claim 1 , wherein the alloy comprises 2.0%-3.0% by weight silicon.10. The alloy as claimed in claim 1 , wherein the alloy comprises 3.0%-4.5% by weight silicon.11. The alloy as claimed in claim 1 , wherein the alloy comprises 3.15%-3.40% by weight silicon.12. The alloy as claimed in claim 1 , wherein the alloy comprises 3.9%-4.1% by weight silicon.13. The alloy as claimed in claim 1 , wherein the alloy comprises no nickel and no chromium except as a possible impurity.14. The alloy as claimed in claim 1 , wherein the alloy comprises at least 0.01% by weight nickel.15. The alloy as claimed in claim 1 , wherein the alloy comprises 3.2% to 3.4% by weight carbon.16. The alloy as claimed in claim 1 , wherein the alloy comprises 3.4% to 3.7% by weight carbon.18. A component claim 1 , consisting of:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'an alloy as claimed in ,'}wherein the alloy is a housing part of a steam turbine or of a gas turbine. The present application claims priority to German application No. 102012217892.9 DE filed Oct. 1, 2012, the entire content of which is hereby incorporated herein by reference.The invention relates to a cast iron containing niobium as claimed in the claims and to a ...

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Номер записи: 11
06-01-2022 дата публикации

METHOD FOR MODIFYING THE DIMENSIONS OF A CAST IRON PUMP PART

Номер: US20220001447A1
Автор: FERREYRA TELLO Everaldo
Принадлежит:

A method for modifying a dimension of a cast iron pump part features placing a cast iron pump part on a base plate of a directed energy deposition (DED) machine; selecting a metal deposition procedure for depositing a metal having a combination of one or more Nickel Alloys or Nickel powders on the cast iron pump part; and depositing the metal on the cast iron pump part to modify the dimension of the cast iron pump part, based upon the metal deposition procedure selected. The selecting of the metal deposition procedure includes forming the metal by mixing metal powders that include a Nickel Alloy “A” in a specified mixed ratio with a pure Nickel powder “B” for depositing on the cast iron pump part. 120-. (canceled)21. A cast iron pump component/part made or manufactured using steps in a method for modifying a dimension of a cast iron pump part , comprising steps forplacing a cast iron pump component/part on a base plate of a directed energy deposition (DED) machine;selecting a metal deposition procedure for depositing a metal having a combination of one or more Nickel Alloys or Nickel powders on the cast iron pump component/part; anddepositing the metal on the cast iron pump component/part to modify the dimension of the cast iron pump component/part, based upon the metal deposition procedure selected.22. A cast iron pump component/part according to claim 21 , wherein the selecting of the metal deposition procedure comprises forming the metal by mixing metal powders that include a Nickel Alloy “A” in a specified mixed ratio with a pure Nickel powder “B” for depositing on the cast iron pump part.23. A cast iron pump component/part according to claim 22 , wherein the Nickel Alloy “A” comprises a High Nickel Alloy “A” that includes Inconel 625 or Inconel 718.24. A cast iron pump component/part according to claim 22 , wherein the specified mixed ratio of the Nickel Alloy “A” and the pure Nickel powder “B” includes percentages ranging from 50-75/25-50 claim 22 , including ...

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Номер записи: 12
07-01-2016 дата публикации

METHOD FOR PRODUCING POWDER METAL COMPOSITIONS FOR WEAR AND TEMPERATURE RESISTANCE APPLICATIONS AND METHOD OF PRODUCING SAME

Номер: US20160001369A1
Автор: "LEsperance Gilles", Beaulieu Philippe, Christopherson, Farthing Leslie John, JR. Denis B., Schoenwetter Todd
Принадлежит:

A powder metal composition for high wear and temperature applications is made by atomizing a melted iron based alloy including 3.0 to 7.0 wt. % carbon; 10.0 to 25.0 wt. % chromium; 1.0 to 5.0 wt. % tungsten; 3.5 to 7.0 wt. % vanadium; 1.0 to 5.0 wt. % molybdenum; not greater than 0.5 wt. % oxygen; and at least 40.0 wt. % iron. The high carbon content reduces the solubility of oxygen in the melt and thus lowers the oxygen content to a level below which would cause the carbide-forming elements to oxidize during atomization. The powder metal composition includes metal carbides in an amount of at least 15 vol. %. The microhardness of the powder metal composition increases with increasing amounts of carbon and is typically about 800 to 1,500 Hv50. 1. A method of forming a powder metal composition , comprising the steps of:providing a melted iron based alloy including 3.0 to 7.0 wt. % carbon, 10.0 to 25.0 wt. % chromium, 1.0 to 5.0 wt. % tungsten, 3.5 to 7.0 wt. % vanadium, 1.0 to 5.0 wt. % molybdenum, not greater than 0.5 wt. % oxygen, and at least 40.0 wt. % iron, based on the total weight of the melted iron based alloy; andatomizing the melted iron based alloy to provide atomized droplets of the iron based alloy.2. The method of including grinding the atomized droplets to remove oxide skin from the atomized droplets.3. The method of claim 1 , wherein the atomizing step includes forming metal carbides in an amount of at least 15 vol. % claim 1 , based on the total volume of the melted iron based alloy.4. The method of claim 3 , wherein the metal carbides are selected from the group consisting of: M8C7 claim 3 , M7C3 claim 3 , M6C claim 3 , wherein M is at least one metal atom and C is carbon.5. The method of claim 4 , wherein M8C7 is (V63Fe37)8C7; M7C3 is selected from the group consisting of: (Cr34Fe66)7C3 claim 4 , Cr3.5Fe3.5C3 claim 4 , and Cr4Fe3C3; and M6C is selected from the group consisting of: Mo3Fe3C claim 4 , Mo2Fe4C claim 4 , W3Fe3C claim 4 , and W2Fe4C.6. ...

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Номер записи: 13
04-01-2018 дата публикации

METHOD FOR PRODUCING POWDER METAL COMPOSITIONS FOR WEAR AND TEMPERATURE RESISTANCE APPLICATIONS

Номер: US20180001387A1
Автор: "LEsperance Gilles", Beaulieu Philippe, Christopherson, Farthing Leslie John, JR. Denis B., Schoenwetter Todd
Принадлежит:

A powder metal composition for high wear and temperature applications is made by atomizing a melted iron based alloy including 3.0 to 7.0 wt. % carbon; 10.0 to 25.0 wt. % chromium; 1.0 to 5.0 wt. % tungsten; 3.5 to 7.0 wt. % vanadium; 1.0 to 5.0 wt. % molybdenum; not greater than 0.5 wt. % oxygen; and at least 40.0 wt. % iron. The high carbon content reduces the solubility of oxygen in the melt and thus lowers the oxygen content to a level below which would cause the carbide-forming elements to oxidize during atomization. The powder metal composition includes metal carbides in an amount of at least 15 vol. %. The microhardness of the powder metal composition increases with increasing amounts of carbon and is typically about 800 to 1,500 Hv50. 1. A method of forming a powder metal composition , comprising the steps of:providing a melted iron based alloy including 3.0 to 7.0 wt. % carbon, 10.0 to 25.0 wt. % chromium, 1.0 to 5.0 wt. % tungsten, 3.5 to 7.0 wt. % vanadium, 1.0 to 5.0 wt. % molybdenum, not greater than 0.5 wt. % oxygen, and at least 40.0 wt. % iron, based on the total weight of the melted iron based alloy; andatomizing the melted iron based alloy to provide atomized droplets of the iron based alloy.2. The method of including grinding the atomized droplets to remove oxide skin from the atomized droplets.3. The method of claim 1 , wherein the atomizing step includes forming metal carbides in an amount of at least 15 vol. % claim 1 , based on the total volume of the melted iron based alloy.4. The method of claim 3 , wherein the metal carbides are selected from the group consisting of: M8C7 claim 3 , M7C3 claim 3 , M6C claim 3 , wherein M is at least one metal atom and C is carbon.5. The method of claim 4 , wherein M8C7 is (V63Fe37)8C7; M7C3 is selected from the group consisting of: (Cr34Fe66)7C3 claim 4 , Cr3.5Fe3.5C3 claim 4 , and Cr4Fe3C3; and M6C is selected from the group consisting of: Mo3Fe3C claim 4 , Mo2Fe4C claim 4 , W3Fe3C claim 4 , and W2Fe4C.6. ...

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Номер записи: 14
01-01-2015 дата публикации

CAST IRON AND BRAKE PART

Номер: US20150004048A1
Автор: SHINKAWA Masaki, Subagijo Kastria, Tyou Mojin, WATANABE Hiroyuki
Принадлежит:

A cast iron and a brake part can be decreased in weight by having a high specific heat. The cast iron consists of, by mass %, 3.0 to 4.8% of C, 3.5 to 5.0% of Si, 0.5 to 2.0% of Mn, 0.3 to 1.5% of Cu, and the balance of Fe and inevitable impurities in the overall composition. 1. A cast iron consisting of , by mass % , 3.0 to 4.8% of C , 3.5 to 5.0% of Si , 0.5 to 2.0% of Mn , 0.3 to 1.5% of Cu , and the balance of Fe and inevitable impurities in the overall composition.2. The cast iron according to claim 1 , wherein specific heat at 200° C. is not less than 600 J/kg/K.3. The cast iron according to claim 1 , wherein thermal conductivity at 200° C. is not less than 44 W/m/K.4. The cast iron according to claim 1 , wherein an area ratio of pearlite in a matrix structure is not less than 90%.5. A brake part produced using the cast iron according to . The present invention relates to a cast iron and to a brake part suitably used in a brake apparatus in a vehicle, etc., and in particular, relates to a technique in which a brake disk is reduced in weight by making a material having a high specific heat.The brake apparatus in an automobile, a motorcycle, etc., has a brake disk that rotates with a wheel and a brake pad that is pressed to the brake disk. The brake disk is required to have a high thermal conductivity in order to prevent loss of function due to frictional heat. As a material that can realize such a requirement at low cost, flake graphite cast iron, CV graphitic cast iron, and spherical graphite cast iron have been used up to now. In particular, in the flake graphite cast iron, thermal conductivity can be improved by increasing graphite length, since graphite is a good conductor of heat.With respect to the cast iron, the following are known. Patent Publication 1 discloses a corrosion-resistant cast iron, consisting of, by mass %, 2.8 to 4% of C, 1.5 to 3.0% of Si, 0.3 to 1.2% of Mn, 0.2% or less of P, 0.06 to 0.25% of S, 0.15 to 3.5% of Cu, and the balance of Fe ...

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Номер записи: 15
03-01-2019 дата публикации

HARD METAL MATERIALS

Номер: US20190003014A1
Автор: Dolman Kevin
Принадлежит:

A hard metal material and a method of manufacturing a component of the hard metal material are disclosed. The hard metal material comprises 5-50 volume % particles of a refractory material dispersed in a host metal. The method comprises forming a slurry of 5-50 volume % particles of the refractory material dispersed in a liquid host metal in an liquid atmosphere and pouring the slurry into a mould and forming a casting of the component. 1. A hard metal material comprising 5-50 volume % particles of a refractory material dispersed in a host metal , wherein the refractory material comprises particles of carbides and/or nitrides and/or borides of any one or more than one of titanium , zirconium , hafnium , vanadium , niobium , tantalum , chromium , and molybdenum.2. The hard metal material defined in wherein the particles of the refractory material also comprise tungsten.3. The hard metal material defined in comprises 5-40 volume % particles of the refractory material dispersed in the host metal.4. The hard metal material defined in comprises greater than 10 volume % particles of the refractory material dispersed in the host metal.5. The hard metal material defined in comprises less than 30 volume % particles of the refractory material dispersed in the host metal.6. The hard metal material defined in wherein the host metal comprises a ferrous alloy claim 1 , a stainless steel claim 1 , an austenitic-manganese steel claim 1 , or an iron-based or a nickel-based or a cobalt-based superalloy.7. A method of manufacturing a component of a hard metal material comprising:(a) forming a slurry of a hard metal material comprising 5-50 volume % particles of a refractory material dispersed in a liquid host metal in an inert atmosphere, and(b) pouring the slurry into a mould and forming a casting of the component in an inert atmosphere.8. The method defined in comprises forming the slurry and thereafter forming the casting of the component in a chamber under vacuum conditions which ...

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Номер записи: 16
27-01-2022 дата публикации

CYLINDER LINER AND MANUFACTURING METHOD FOR SAME

Номер: US20220025829A1
Автор: Hatakeyama Koichi, KUROMASA Yuki, Ozawa Takashi
Принадлежит:

A cylinder liner of the present invention is a cylinder liner mounted on a cylinder block and formed of flaky graphite cast iron, at least a nitrided layer is provided on an inner periphery of the cylinder liner, and a cross hatching section is formed on the inner periphery, a roughness curve of the inner periphery has a plateau honing shape, a ten-point average roughness Rz of the inner periphery pursuant to JIS B0601:1982 is 4.0 μm or less, and an average value of an area ratio of pits generated in the inner periphery is 8% or less. 1. A cylinder liner mounted on a cylinder block and formed of flaky graphite cast iron , wherein at least a nitrided compound layer having a thickness of 3 μm or more and 15 μm or less is provided on an inner periphery of the cylinder liner , and a cross hatching section is formed on the inner periphery , a roughness curve of the inner periphery has a plateau honing shape , a ten-point average roughness Rz of the inner periphery pursuant to JIS B0601:1982 is 4.0 μm or less , and an average value of an area ratio of pits generated in the inner periphery is 8% or less , a depth of the pit is equal to or smaller than the thickness of the nitrided compound layer , and a diameter of the pit is 10 to 100 μm.2. The cylinder liner according to claim 1 , wherein the cylinder liner has a metal structure in which flaky free graphite is dispersed and crystallized in a cast iron matrix claim 1 , some of the free graphite present in a surface part to a depth of 20 μm of the inner periphery of the cylinder liner is dispersed such that a part of some of the free graphite reaches to the inner periphery as an exposed part claim 1 , and the other free graphite present in the surface part of the inner periphery extends to a vicinity of the inner periphery and is dispersed such that a part reaching the inner periphery from an extension part tip of the other free graphite is a covering section formed of a material that constitutes the cast iron matrix.3. ...

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Номер записи: 17
19-01-2017 дата публикации

Spheroidal graphite cast iron for an engine exhaust system

Номер: US20170016098A1
Автор: Dong-Seob Shim, Jae-Hyoung HWANG, Jong-Kwon CHUNG, Ki-Hwan JUNG, Sang-Beom Kim, Sik Yang, Young-Kyu JU
Принадлежит: Doosan Infracore Co Ltd

A spheroidal graphite cast iron for a component of an engine exhaust system includes carbon ranging from about 3.0 wt % to about 3.4 wt %, silicon ranging from about 4.2 wt % to about 4.5 wt %, manganese ranging from about 0.1 wt % to about 0.3 wt %, sulfur ranging from about 0.002 wt % to about 0.01 wt %, phosphorous in a range equal to or less than about 0.05 wt %, magnesium ranging from about 0.035 wt % to about 0.055 wt %, molybdenum ranging from about 0.9 wt % to about 1.2 wt %, nickel ranging from about 0.2 wt % to about 0.5 wt %, vanadium ranging from about 0.4 wt % to about 0.6 wt %, niobium ranging from about 0.1 wt % to about 0.4 wt %, cerium ranging from about 0.005 wt % to about 0.01 wt %, aluminum ranging from about 0.003 wt % to about 0.007 wt %, and a remainder of iron.

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Номер записи: 18
21-01-2016 дата публикации

HARD WELD OVERLAYS RESISTANT TO RE-HEAT CRACKING

Номер: US20160017463A1
Автор: Cheney Justin Lee, Madok John Hamilton, Zhang Shengjun
Принадлежит:

Disclosed herein are embodiments of a hard weld overlay which can be resistant to cracking. The alloys can be able to resist cracking through prevention of the precipitation and/or growth of embrittling carbide, borides, or borocarbides along the grain boundaries at elevated temperatures. By controlling the thermodynamics of the boride and carbide phases, it is possible to create an alloy which forms hard wear resistant phases that are not present along the grain boundaries of the matrix. 1. A work piece having at least a portion of its surface covered by a layer comprising a microstructure containing primary hard particles comprising one or more of boride , carbide , borocarbide , nitride , carbonitride , aluminide , silicide , oxide , intermetallic , and laves phase , wherein the layer comprises a macro-hardness of 50 HRC or greater and a high resistance to cracking , wherein:primary hard particles are defined as forming at least 10K above the solidification temperature of Fe-rich matrix in the alloy; andhigh resistance to cracking is defined as exhibiting no cracks when hardbanding on a steel pipe which is pre-heated to 300° F. and contains an internal reservoir of cooling water.2. The work piece of claim 1 , wherein the primary hard particle fraction is a minimum of 2 volume percent.32. The work piece of any one of - claims 1 , wherein the secondary hard particle fraction is a maximum of 10 volume percent.43. The work piece of any one of - claims 1 , wherein the surface exhibits a mass loss of less than 0.1 grams when subject to 500 carbide hammer impacts possessing 8J of impact energy.54. The work piece of any one of - claims 1 , wherein a surface of the layer exhibits high wear resistance as characterized by an ASTM G65 dry sand wear test mass loss of 0.6 grams or less.65. The work piece of any one of - claims 1 , wherein the layer comprises in wt. % of Fe: bal claims 1 , B: 0-1 claims 1 , C: 0-2 claims 1 , Co: 0-2 claims 1 , Cr claims 1 , 0-20 claims 1 , Mn ...

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Номер записи: 19
21-01-2021 дата публикации

Gray Cast Iron Alloy, and Internal Combustion Engine Head

Номер: US20210017633A1
Автор: BAUMER Ivo, CABEZAS Carlos De Souza, GUESSER Wilson Luiz, SILVA Eder dos Reis
Принадлежит: TuPy S.A.

The present invention refers to a gray cast iron alloy with chemical composition especially developed to promote high hot mechanical strength and good thermal conductivity, with antimony and nitrogen contents, wherein the antimony content ranges from 0.05 to 0, 12% by weight, and the nitrogen content ranges from 0.008 to 0.013% by weight, based on the total weight of the gray cast iron alloy. 1. Gray cast iron alloy , characterized by presenting a chemical composition with antimony and nitrogen contents , where the antimony content ranges from 0.05 to 0.12% by weight , and the nitrogen content ranges from 0.008 to 0.013% by weight , based on the total weight of the gray cast iron alloy.2. Iron alloy claim 1 , according to claim 1 , characterized by further comprising contents of at least one of the following elements: carbon claim 1 , phosphorus claim 1 , silicon claim 1 , manganese claim 1 , sulfur claim 1 , chromium claim 1 , copper claim 1 , tin claim 1 , molybdenum and iron.3. Iron alloy claim 1 , according to claim 1 , characterized in that the chromium content ranges from 0.05 to 0.25% by weight claim 1 , based on the total weight of the gray cast iron alloy.4. Iron alloy claim 1 , according to claim 1 , characterized in that the copper content ranges from 0.01 to 0.95% by weight claim 1 , based on the total weight of the gray cast iron alloy.5. Iron alloy claim 1 , according to claim 1 , characterized in that the tin content ranges from 0.01 to 0.12% by weight claim 1 , based on the total weight of the gray cast iron alloy.6. Iron alloy claim 1 , according to claim 1 , characterized in that the molybdenum content ranges from 0.03 to 0.30% by weight claim 1 , based on the total weight of the gray cast iron alloy.7. Internal combustion engine head claim 1 , characterized in that it is made of gray cast iron alloy claim 1 , as defined in . The present invention refers to a gray cast iron alloy with chemical composition especially developed to promote high hot ...

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Номер записи: 20
22-01-2015 дата публикации

Disc brake rotor for heavy-duty vehicles

Номер: US20150021128A1
Автор: Jay D. White, Jeffrey S. Morris
Принадлежит: HENDRICKSON USA LLC

The invention is directed to a rotor of a disc brake system for heavy-duty vehicles. The rotor includes an inboard disc and an outboard disc. The outboard disc is spaced apart from the inboard disc, and a plurality of pins extends between and rigidly connects the inboard disc and the outboard disc. A sleeve includes an inboard end and an outboard end, and is disposed inside an inner perimeter of the outboard disc. A connecting member extends between and rigidly connects an inner perimeter of the inboard disc to the inboard end of the sleeve. The inboard disc attachment to the sleeve and the interconnecting pins cooperate to improve the resistance of the rotor to thermal stress created during braking, thereby increasing the performance and the life of the rotor.

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Номер записи: 21
17-04-2014 дата публикации

Non-magnetic metal alloy compositions and applications

Номер: US20140105780A1
Автор: John Hamilton Madok, Justin Lee Cheney, Kyle Walter Rafa
Принадлежит: Scoperta Inc

Disclosed are non-magnetic metal alloy compositions and applications that relate to non-magnetic metal alloys with excellent wear properties for use in dynamic three-body tribological wear environments where an absence of magnetic interference is required. In one aspect, the disclosure can relate to a drilling component for use in directional drilling applications capable of withstanding service abrasion. In a second aspect, a hardbanding for protecting a drilling component for use in directional drilling can be provided. In a third aspect, a method for prolonging service life of a drilling component for use in directional drilling can be provided.

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Номер записи: 22
28-01-2016 дата публикации

PROFILED BINDING FOR A ROLLER PRESS

Номер: US20160023215A1
Автор: Frangenberg Meinhard
Принадлежит:

A process for producing a profiled binding for use in a roller press. An alloy containing a high degree of chromium is used. A high wear-resistance of the binding is thereby achieved, wherein the binding is not sensitive with respect to build-up welding in order to reconstruct the profile after wear. 2. The process according to claim 1 , wherein the casting step is performed by static casting.3. The process according to claim 1 , wherein the casting step is performed by centrifugal casting.4. The process as claimed in claim 3 , comprising the steps of:introducing axial grooves into the surface of the cylindrical hollow body by at least one of grinding machining and molding in during the casting in a casting mold.6. The process as claimed in claim 3 , further including the steps:introducing axial grooves into the surface of the cylindrical hollow body by at least one of grinding machining and molding in during the casting in a casting mold. This application is a divisional of application Ser. No. 13/703,988, filed Dec. 13, 2012.The invention relates to a profiled casing for a roller press for subjecting particulate material to be ground to high-pressure treatment, to a process for producing said profiled casing and to the use of a defined iron alloy having a high chromium content for producing said profiled casing.For the comminution of particulate and brittle material to be ground, it is known to comminute the material to be ground not by shear stress—as is conventional but rather in an energetically economical manner solely by the application of high pressure in a roller nip. In addition to its energetically favorable use, this type of comminution also has the further advantage of an increased service life of the rollers used to generate the pressure in the roller nip.In the comminution of rock and very hard and abrasive clinker, there is a predetermined limit to the service life of a roller of a roller press, however, which is caused by the severe abrasion brought ...

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Номер записи: 23
22-01-2015 дата публикации

BEARING COMPONENT

Номер: US20150023623A1
Автор: Beswick John, Sherif Mohamed
Принадлежит:

A bearing component formed from a steel composition and providing carbon, silicon, manganese, chromium, cobalt, vanadium, and at least one of the following elements sulphur, phosphorous, molybdenum, aluminium, arsenic, tin, antimony, and the balance iron, together with impurities. 1. A bearing component formed from a steel composition comprising:(a) from 1.8-2.8 wt. % carbon,(b) from 1.0-2.0 wt. % silicon,(c) from 1.0-2.5 wt. % manganese,(d) from 1.0-2.5 wt. % chromium,(e) from 1.0-2.0 wt. % cobalt,(f) from 5.0-11.0 wt. % vanadium, and from 0-0.1 wt. % sulphur,', 'from 0-0.1 wt. % phosphorous,', 'from 0-1.35 wt. % molybdenum,', 'from 0-0.5 wt. % aluminium,', 'from 0-0.075 wt. % arsenic,', 'from 0-0.075 wt. % tin,', 'from 0-0.075 wt. % antimony,, '(g) at least one of the following elements(h) the balance wt. % iron and impurities.2. The bearing component as claimed in claim 2 , wherein the sum of arsenic claim 2 , tin and antimony is no more than 0.075 wt. %.3. The bearing component as claimed in claim 2 , wherein the alloy comprises ≦15 ppm oxygen.4. The bearing component as claimed in claim 1 , wherein the alloy comprises ≦30 ppm titanium.5. The bearing component as claimed in claim 1 , wherein the alloy comprises ≦10 ppm calcium.6. The bearing component as claimed in claim 1 , comprises from 2.2 to 2.5 wt. % carbon.7. The bearing component as claimed in claim 1 , comprising from 1.4-1.6 wt. % silicon.8. The bearing component as claimed in claim 1 , comprising from 1.6-1.8 wt. % manganese.9. The bearing component as claimed in claim 1 , comprising from 1.6-1.8 wt. % chromium.10. The bearing component as claimed in claim 1 , comprising from 1.3-1.5 wt. % cobalt.11. The bearing component as claimed in claim 1 , comprising from 7.0-8.0 wt. % vanadium.12. The bearing component as claimed in claim 1 , comprising from 0-0.015 wt. % sulphur.13. The bearing component as claimed in claim 1 , comprising from 0-0.02 wt. % phosphorous.14. The bearing component as claimed in ...

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Номер записи: 24
28-01-2016 дата публикации

PROCESS FOR PRODUCING A COMPONENT MADE OF HEAT-TREATED CAST IRON

Номер: US20160024622A1
Автор: BRODA Maik, PALAZZOLO Christopher K., URSAVAS Uemit, WARKENTIN Matthias, WEBER Glen
Принадлежит:

The disclosure relates to a process for producing a hardened and tempered component made of specially heat-treated cast iron (e.g., AGI). According to the disclosure, a main body made of cast iron is prepared which may already be in the shape of an engine block. The main body may then be subjected to pre-machining, which may include forming one or more bores. Then, the main body may be hardened and tempered by a suitable heat treatment, such as a special heat treatment. After the disclosed heat treatment, post-processing of the component may follow, such as establishing the final dimensions. 1. A process for producing a component made of heat-treated cast iron , comprising:casting a main body from a cast iron;pre-machining the main body, wherein the pre-machining comprises honing, at least in certain regions, and creating at least one bore;special heat treatment of the pre-machined main body, wherein the special heat treatment establishes an ausferritic microstructure; andfinishing the main body to its final dimensions.2. The process of claim 1 , wherein the pre-machined main body claim 1 , in the context of its special heat treatment claim 1 , is heated to a temperature of 850° C. to 950° C.3. The process of claim 1 , wherein the pre-machined main body is cooled in a salt bath after the special heat treatment.4. The process of claim 3 , wherein the salt bath has a temperature of 220° C. to 450° C.5. The process of claim 1 , wherein the main body is an engine block.6. The process of claim 1 , wherein the pre-machining takes into account a change in a shape of the main body as a consequence of its subsequent special heat treatment.7. The process of claim 1 , wherein at least one opening of the main body claim 1 , which is already hardened and tempered by the special heat treatment claim 1 , is then at least partially provided with a thread by a mechanical process.8. The process of claim 1 , wherein the special heat treatment establishes an at least 90% ausferritic ...

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Номер записи: 25
28-01-2016 дата публикации

HIGH STRENGTH NODULAR CAST IRON POLE AND PREPARATION TECHNOLOGY THEREOF

Номер: US20160024623A1
Автор: YU Pei
Принадлежит:

The invention discloses a high strength nodular cast iron pole and a preparation technology thereof. The preparation technology is characterized by comprising the following steps: (1) preparation before pole casting, to be specific, preparation of raw materials, smelting of iron, adding of alloying elements and nodulizing; (2) a pole casting procedure, to be specific, casting and inoculation treatment; and (3) heat treatment. The invention also provides the high strength nodular cast iron pole prepared by adopting the preparation technology, comprising multiple tower poles which are sequentially connected in an inserted manner, wherein each tower pole is a cone-frustum hollow column which has the conicity of 1000: 11-26; the top end of the high strength nodular cast iron pole is equipped with a tower cap. The high strength nodular cast iron pole has the advantages of high bearing capacity, thin wall thickness, light weight, low manufacturing cost and the like. 1. A preparation technology of a high strength nodular cast iron pole , characterized by comprising the following steps:{circle around (1)} preparation before pole casting, including preparation of raw materials, iron smelting, adding of alloying elements and nodulizing process;A1: preparation of raw materials is the adopted raw materials include 90-95 wt % of foundry pig iron or blast-furnace molten iron and 5-10 wt % of steel scrap;A2: iron smelting, including weighing raw materials according to above-mentioned percentage by mass, sequentially adding the raw materials into a medium frequency furnace, starting a power source and raising temperature of the furnace to 1470-1500° C. to melt the raw materials;A3: adding of the alloying elements, to be specific, is adding Cu, Mo, Ni and V according to the performances of the product, and then the mass percentages of various elements in the molten iron are:C: 3.4-3.8%, Si: 1.2-2.6%, Mn: 0.3-0.5%, Cu: 0.15-0.5%, Mo: 0.3-1.0%, Ni: 1-2%, V: 0.3-0.5%, P≦0.06%, S≦0.025 ...

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Номер записи: 26
26-01-2017 дата публикации

Composite Metal Product

Номер: US20170022588A1
Автор: Dolman Kevin Francis, Tang Xinhu
Принадлежит:

A centrifugally cast composite metal product having an axis of rotational symmetry and a mass of at least 5 kg, comprises a host metal and insoluble solid refractory particles of & refractory material in a non-uniform distribution throughout the host metal. The particles have a density that is within 30% of the density of the host metal at its casting temperature. 1. A centrifugally cast composite metal product having an axis of rotational symmetry and a mass of at least 20 kg and comprising a metal host and insoluble solid particles of a refractory material in a non-uniform distribution throughout the host metal , wherein the particles have a density that is within 20% of the density of the metal host at its casting temperature , and wherein the non-uniform distribution of refractory particles comprises a first concentration of particles in an exterior or interior surface layer of the product that is higher than a second concentration of particles in another layer in the product.2. (canceled)3. The composite metal product defined in claim 1 , wherein the first concentration of refractory particles in the exterior surface layer of the product is in a range of 10-40 vol % of the total volume of the exterior surface layer.4. The composite metal product defined in claim 1 , wherein the second concentration of refractory particles in the other layer of the product is in a range of 2-4.5 vol % of the total volume of the other layer.5. The composite metal product defined in claim 1 , wherein the first concentration of refractory particles in the exterior surface layer of the product is 50-120 vol % higher than the nominal volume percentage of the refractory material in the product.6. The composite metal product defined in claim 1 , wherein the exterior or interior surface layer of the product extends less than 50% of the radial thickness of the product from the exterior or interior surface of the product.7. The composite metal product defined in claim 1 , wherein the ...

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Номер записи: 27
26-01-2017 дата публикации

Acetone storage

Номер: US20170022589A1
Автор: Andreas Leitner, René Dicke
Принадлежит: Borealis AG

An acetone storage tank or acetone transfer pipe comprising stainless steel in which the amount of Cr is in the range 10.5 wt % to 20 wt %; the amount of Ni is ≧9 wt %, and the amount of Mo is 2.75%≧Mo≧0 wt %, of the stainless steel.

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Номер записи: 28
24-01-2019 дата публикации

Systems and Methods of Fabrication and Use of Wear-Resistant Materials

Номер: US20190022759A1
Автор: Anil Kumar, Biju Pillai KUMAR, Bradley S. IVIE, Michael D. Hughes, Russell C. Gilleylen, WEI Liu
Принадлежит: National Oilwell DHT LP

Discussed herein are systems and methods of forming hardfacing coatings and films containing Q-carbon diamond particles for use in downhole drilling tooling and other tools where wear-resistant coating is desirable. The Q-carbon diamond-containing layers may be coated with matrix material and/or disposed in a matrix to form the coating, or the Q-carbon diamond layer may be formed directly from a diamond-like-carbon on a substrate.

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Номер записи: 29
29-01-2015 дата публикации

METHOD FOR MANUFACTURING HIGH STRENGTH FLAKE GRAPHITE CAST IRON, FLAKE GRAPHITE CAST IRON MANUFACTURED BY THE METHOD, AND ENGINE BODY COMPRISING THE CAST IRON FOR INTERNAL COMBUSTION ENGINE

Номер: US20150027399A1
Автор: Hwang Jae Hyoung, JUNG Ki Hwan, Shim Dong Seob, Yang Sik
Принадлежит:

The present disclosure relates to a flake graphite cast iron simultaneously having high strength, good machinability, and fluidity, to a method for manufacturing same, and to an engine body comprising the flake graphite cast iron for an internal combustion engine and, more particularly, to a method for manufacturing a flake graphite cast iron, for an engine cylinder block and head having improved castability, a low possibility of the occurrence of chill due to ferroalloy, stable tensile strength and yield strength, and good machinability by adding a trace of strontium in a cast iron including carbon (C), silicon (Si), manganese (Mn), sulfur (S), and phosphorus (P), which are five elements of the cast iron, molybdenum (Mo), a high strengthening additive, and copper (Cu) while controlling the ratio (S/Sr) of the sulfur (S) content to the strontium (Sr) content in the cast ion. 1. A method for manufacturing a high-strength flake graphite cast iron , the method comprising:(i) manufacturing molten cast iron that includes 3.2 to 3.5% of carbon (C), 1.9 to 2.3% of silicon (Si), 0.4 to 0.9% of manganese (Mn), 0.06 to 0.1% of sulfur (S), 0.06% or less of phosphorous (P), 0.6 to 0.8% of copper (Cu), 0.15 to 0.25% of molybdenum (Mo), and a remainder of iron (Fe) with respect to a total weight %;(ii) adding strontium (Sr) to the melted molten cast iron such that a ratio (S/Sr) of the content of the sulfur (S) to the content of the strontium (Sr) is in a range of 16 to 98; and(iii) tapping the molten cast iron in a ladle to put the tapped molten cast iron in a casting mold.2. The method of claim 1 , wherein an additive content of the strontium (Sr) is in a range of 0.001 to 0.005% with respect to a total weight of the molten cast iron.3. The method of claim 1 , wherein the molten cast iron of the step (i) is manufactured by adding 0.6 to 0.8% of copper (Cu) and 0.15 to 0.25% of molybdenum (Mo) to molten cast iron manufactured by melting a cast iron material that includes 3.2 to ...

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Номер записи: 30
02-02-2017 дата публикации

LUBRICATION-FREE PIECE FOR A RAILWAY DEVICE

Номер: US20170030022A1
Автор: Barresi Francesco
Принадлежит:

The disclosure relates to a lubrication-free piece having a friction surface that rubs against a second surface, the lubrication-free piece having at least one structure made from spheroidal graphite cast iron or steel, the external surface of the piece including at least one layer of lubricating thermoplastic polymers, wherein the lubrication-free piece includes a nickel/aluminium-based intermediary layer between the spheroidal graphite cast iron or steel structure and the layer of lubricating thermoplastic polymers. 1. A lubrication-free piece for a railroad device comprising:a friction surface that rubs against a second surface;a spheroidal graphite cast iron or steel structure, with an external surface of the lubrication-free piece having at least a layer of lubricating thermoplastic polymers; anda nickel-aluminum based intermediate layer between the spheroidal graphite cast iron or steel structure and the layer of lubricating thermoplastic polymers.2. The lubrication-free piece or part according to claim 1 , wherein a surface of the spheroidal graphite cast iron or steel structure onto which is arranged the nickel-aluminum based intermediate layer claim 1 , produces a relief that is at least partially filled by the nickel-aluminum based intermediate layer.3. The lubrication-free piece according to claim 1 , wherein the nickel-aluminum based intermediate layer produces an isolation of spheroidal graphite particles.4. The lubrication-free piece according to claim 1 , wherein the lubricating thermoplastic polymers include at least a thermostable semi-crystalline thermoplastic.5. The lubrication-free piece according to claim 1 , wherein the lubricating thermoplastic polymers include at least a polyether ether ketone.6. A joint forming a sliding assembly comprising: the lubrication-free piece having a friction surface according to .7. A treatment process of a surface of a spheroidal graphite cast iron or steel structure for achieving a reduction of friction ...

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Номер записи: 31
04-02-2016 дата публикации

DEVELOPMENT OF NANOSTRUCTURE AUSTEMPERED DUCTILE IRON WITH DUAL PHASE MICROSTRUCTURE

Номер: US20160032430A1
Автор: PUTATUNDA Susil K.
Принадлежит:

A method for forming an austempered iron composition with a nanoscale microstructure includes a step of heating an iron-carbon-silicon alloy with silicon to a first temperature that is lower than A1 for the iron-carbon-silicon alloy. The iron-carbon-silicon alloy is then adiabatically deformed such that the temperature of the iron-carbon-silicon alloy rises to a second temperature which is sufficient to form proeutectoid ferrite and austenite. The iron-carbon-silicon alloy is cooled to a first austempering temperature. The iron-carbon-silicon alloy is then heated to a second austempering temperature that is greater than the first austempering temperature to form a dual phase microstructure. Characteristically, the dual phase microstructure includes proeutectoid ferrite and ausferrite. 1. A method for forming an austempered iron composition with a nanoscale microstructure , the method comprising:a) heating an iron-carbon-silicon alloy with silicon to a first temperature that is lower than A1 for the iron-carbon-silicon alloy, the iron-carbon-silicon alloy including greater than about 1.7 weight percent silicon;b) adiabatically deforming the iron-carbon-silicon alloy such that the temperature of the iron-carbon-silicon alloy rises to a second temperature, the second temperature being sufficient to form proeutectoid ferrite and austenite, the second temperature being above α tranus for the iron-carbon-silicon alloy;c) cooling the iron-carbon-silicon alloy to a first austempering temperature;e) heating the iron-carbon-silicon alloy to a second austempering temperature that is greater than the first austempering temperature to form a dual phase microstructure, the dual phase microstructure including proeutectoid ferrite and ausferrite, the ausferrite including bainitic ferrite and high-carbon austenite, the bainitic ferrite and the high carbon austenite each independently having at least one spatial dimension less than about 150 nm; andg) cooling the iron-carbon-silicon ...

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Номер записи: 32
30-01-2020 дата публикации

Vermicular Cast Iron Alloy for Internal Combustion Engine Block and Head

Номер: US20200032377A1
Автор: CABEZAS Carlos De Souza, GUESSER Wilson Luiz, MAIS Vanessa, MELLERAS Eitan, MULLER Ailton Luiz
Принадлежит:

The present invention refers to a vermicular cast iron alloy specially designed for internal combustion engine blocks and heads having special requirements of mechanical strength and fatigue strength. Vermicular iron alloy with high mechanical strength and high fatigue strength for the production of internal combustion engines blocks and heads characterized by having a microstructure of pearlitic matrix and predominantly vermicular graphite (>70%) and presence of graphite nodules in up to 30%, wherein its graphite microstructure is described by the Microstructure Factor (FM), as defined below, with Microstructure Factor values higher than 0.94. 1. Vermicular iron alloy with high mechanical strength and high fatigue strength for the production of internal combustion engines blocks and heads characterized by having a microstructure of pearlitic matrix and predominantly vermicular graphite (>70%) and presence of graphite nodules in up to 30% , wherein its graphite microstructure is described by the Microstructure Factor (FM) , as defined below , with Microstructure Factor values higher than 0.94;FM=(8.70×A1−0.541×A2+0.449×A3+0.064×A4)/1000, where:A1—percentage of nodulization, referring to the number of spherical particles of graphite, considering particles smaller than 10 μm;{'sup': '2', 'A2—number of graphite particles greater than 10 μm, per mm;'}{'sup': '2', 'A3—number of graphite particles smaller than 10 μm, per mm; and'}{'sup': '2', 'A4—number of eutectic cells, per cm.'}2. Vermicular iron alloy with high mechanical strength for the production of internal combustion engines blocks and heads claim 1 , according to claim 1 , characterized by presenting a minimum Strength Limit of 500 MPa claim 1 , a minimum Yield Stress of 350 MPa claim 1 , a minimum Fatigue Limit of 190 MPa (tension-compression claim 1 , R=−1).3. Internal combustion engine block claim 1 , according to claim 1 , characterized by presenting claim 1 , in samples obtained from the support bearings ...

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Номер записи: 33
06-02-2020 дата публикации

PISTON WITH COFUSED ALFIN RING AND PROCESS TO OBTAIN IT

Номер: US20200038948A1
Автор: Anguillesi Dimitri
Принадлежит:

The present invention relates to a process for producing a piston made of hypereutectic Al—Si alloy with a cast iron Alfin ring and a piston obtained through said process. The process according to the invention allows to obtain high adhesion of the Alfin ring to the piston body, making it particularly suitable for use in high performance engines. 1. A process to produce for a piston made of a hypereutectic Al—Si alloy comprising at least one Alfin ring , comprising the steps of:(i) providing at least one cast iron ring;(ii) soaking said at least one cast iron ring in at least one aluminium plating bath comprising an Al—Si alloy comprising 8.0-12.0 wt. % of Si at the temperature of 650°-750° C.;(iii) extracting the cast iron ring from the aluminium plating bath and inserting it in a casting mold;(iv) pouring a hypereutectic Al—Si alloy comprising 16-24 wt. % of Si into the mold, at a casting temperature of 760°-900° C., thereby obtaining a piston comprising at least one Alfin ring;(v) cooling and extracting the piston from the mold.2. The process according to claim 1 , wherein the at least one cast iron ring comprises Ni-resist austenitic cast iron comprising 12.0-22.0 wt. % of Ni claim 1 , the remaining part being iron and optionally further alloying elements selected from C claim 1 , Si claim 1 , Mn claim 1 , Cr claim 1 , Cu claim 1 , unavoidable impurities and mixtures thereof.4. The process according to claim 1 , wherein the aluminium plating bath comprises an Al—Si alloy comprising 10.0-11.5 wt. % of Si.5. The process according to claim 1 ,wherein the aluminium plating bath comprises an Al—Si alloy comprising Fe and Cu as alloying elements in an overall amount 4 wt. %.7. A piston made of a hypereutectic Al—Si alloy comprising at least one Alfin ring obtained from the process according to claim 1 , wherein the hypereutectic Al—Si alloy comprises 16-24 wt. % of Si.8. The piston according to claim 7 , comprising at least one Alfin ring made of “Ni-resist” ...

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Номер записи: 34
07-02-2019 дата публикации

Method of manufacturing a seal

Номер: US20190040955A1
Автор: Dennis Michael Turczyn, Thierry Marchione, Timothy A. Thorson
Принадлежит: Caterpillar Inc

A method for manufacturing a seal is disclosed. The method includes forming a layer of a hardened metal layer on a metal base plate. Further, the method includes melting the layer of the hardened metal in a nitrogen atmosphere to form a layer of metal nitride. Furthermore, the method includes depositing a plurality of layers of a metal alloy on the layer of metal nitride to form a main seal body portion, wherein the layer of metal nitride and the main seal body portion together correspond to the seal.

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Номер записи: 35
26-02-2015 дата публикации

GREY CAST IRON HAVING EXCELLENT DURABILITY

Номер: US20150053077A1
Автор: Nam Duk-Hyun
Принадлежит:

Disclosed is grey cast iron having an excellent durability and comprising carbon (C) in an amount of about 2.6 to 3.2 wt %, copper (Cu) in an amount of about 0.7 to 0.9 wt %, phosphorus (P) in an amount of about 0.4 to 0.7 wt %, molybdenum (Mo) in an amount of about 0.2 to 0.4 wt %, tin (Sn) in an amount of about 0.02 to 0.08 wt %, and a balance of iron (Fe) and trace amounts of unavoidable impurities, and a method for production thereof. The present invention improves tensile strength, fatigue strength, and the like and further reduces friction coefficient of the grey cast iron as compared with a conventional material. The grey cast iron has an excellent durability and provides a cost reduction of about 10% or more as compared with a conventional material. 1. A grey cast iron comprising:carbon (C) in an amount of about 2.6 to 3.2 wt %;copper (Cu) in an amount of about 0.7 to 0.9 wt %;phosphorus (P) in an amount of about 0.4 to 0.7 wt %,molybdenum (Mo) in an amount of about 0.2 to 0.4 wt %,tin (Sn) in an amount of about 0.02 to 0.08 wt %;a balance of iron (Fe); andtrace amounts of impurities,wherein the wt % are relative to the total weight of the grey cast iron.2. The grey cast iron of claim 1 , wherein the grey cast iron further comprises:silicon (Si) in an amount of about 1.8 to 2.2 wt %; manganese (Mn) in an amount of about 0.6 to 1.0 wt %; chromium (Cr) in an amount of less than about 0.4 wt % and greater than 0 wt %; andsulfur (S) in an amount of less than about 0.1 wt % and greater than 0 wt %,wherein the wt % are relative to the total weight of the grey cast iron.3. The grey cast iron of claim 2 , wherein the tin (Sn) claim 2 , the chromium (Cr) claim 2 , and the copper (Cu) satisfy a relationship of about 1.1 wt %≦about (5×wt % of Sn+wt % of Cr+wt % of Cu)≦about 1.5 wt %.4. The grey cast iron of claim 2 , wherein the grey cast iron has a tensile strength of about 270 to 400 MPa claim 2 , a fatigue strength of about 120 to 190 MPa claim 2 , and a friction ...

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Номер записи: 36
25-02-2016 дата публикации

HIGH-STENGTH, HIGH-DAMPING-CAPACITY CAST IRON

Номер: US20160053351A1
Автор: FUJIMOTO Ryousuke, HAREYAMA Takumi
Принадлежит:

A high-strength, high-damping-capacity cast iron having both a high strength and high vibration damping capacity is provided. 1. A high-strength , high-damping-capacity cast iron obtained by a method including performing a graphite spheroidizing treatment on a molten metal , and consisting of 2% to 4% of C , 1% to 5% of Si , 0.2% to 0.9% of Mn , 0.1% or less of P , 0.1% or less of S , 3% to 7% of Al , 0% to 1% of Sb , 0% to 0.5% of Sn , 0.02% to 0.10% of Mg , 0.001% to 0.500% of RE consisting of Ce and/or La at an arbitrary ratio , Fe as balance , and unavoidable impurity.2. The high-strength claim 1 , high-damping-capacity cast iron according to claim 1 , wherein the content of Sb is 0.2% to 1% or a content of Sn is 0.1% to 0.5%.3. The high-strength claim 1 , high-damping-capacity cast iron according to claim 1 , wherein a content of Sb is 0.5% to 1%.4. The high-strength claim 1 , high-damping-capacity cast iron according to claim 1 , wherein a content of RE is 0.001% to 0.050%.5. The high-strength claim 1 , high-damping-capacity cast iron according to claim 1 , wherein the method further includes an inoculation treatment of adding claim 1 , to the molten metal claim 1 , an inoculant consisting of at least one element of Ca and Ba such that in the cast iron claim 1 , a content of Ca would be 0.0001% to 0.01% or a content of Ba would be 0.0001% to 0.01%.6. The high-strength claim 5 , high-damping-capacity cast iron according to claim 5 , wherein the inoculation treatment includes late inoculation.7. The high-strength claim 1 , high-damping-capacity cast iron according to claim 1 , wherein the method further includes performing at 900° C. or more claim 1 , quenching claim 1 , normalizing claim 1 , or annealing.8. The high-strength claim 1 , high-damping-capacity cast iron according to claim 1 , wherein the method further includes performing at 1 claim 1 ,000° C. or more claim 1 , quenching claim 1 , normalizing claim 1 , or annealing.9. The high-strength claim 1 , ...

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Номер записи: 37
15-05-2014 дата публикации

Metal cored welding wire, hardband alloy and method

Номер: US20140131338A1
Автор: Christopher J. Postle
Принадлежит: Postle Industries Inc

Various embodiments of a metal cored wires, hardband alloys, and methods are disclosed. In one embodiment of the present invention, a hardbanding wire comprises from about from about 16% to about 30% by weight chromium; from about 4% to about 10% by weight nickel; from about 0.05% to about 0.8% by weight nitrogen; from about 1% to about 4% by weight manganese; from about 1% to about 4% by weight carbon from about 0.5% to about 5% by weight molybdenum; from about 0.25% to about 2% by weight silicon; and the remainder is iron including trace elements. The hardband alloy produced by the metal cored wire meets API magnetic permeability specifications and has improved metal to metal, adhesive wear resistance compared to conventional hardband alloys.

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Номер записи: 38
21-02-2019 дата публикации

Spheroidal Graphite Cast Iron Excellent in Gas Defect Resistance

Номер: US20190055631A1
Автор: Kawabata Masahide, YAMANE Hideya
Принадлежит:

There is provided with spheroidal graphite cast iron having excellent gas defect resistance where gas defects such as pinholes attributable to the free N are small in number and having mechanical characteristics and machinability equal to or greater than the conventional ones. The spheroidal graphite cast iron consists of, in mass ratio, C: 3.3 to 4%; Si: 2 to 3%; P: not more than 0.05%; S: not more than 0.02%; Mn: not more than 0.8%; Cu: not more than 0.8% (0 is not included); Mg: 0.02 to 0.06%; Ti: 0.01 to 0.04%; V: 0.001 to 0.01%; Nb: 0.001 to 0.01%; and N: 0.004 to 0.008%, with the remnant substantially consisting of Fe and an inevitable impurity. 15-. (canceled)6. A spheroidal graphite cast iron excellent in gas defect resistance consisting of , in mass ratio:C: 3.3 to 4%;Si: 2 to 3%;P: not more than 0.05%;S: not more than 0.02%;Mn: not more than 0.8%;Cu: not more than 0.8% (0 is not included);Mg: 0.02 to 0.06%;Ti: 0.01 to 0.04%;V: 0.001 to 0.01%;Nb: 0.001 to 0.01%; andN: 0.004 to 0.008%,with the remnant substantially consisting of Fe and an inevitable impurity.7. The spheroidal graphite cast iron according to claim 6 , {'br': None, '0.8≤(0.29Ti+0.27V+0.15Nb)/N≤2.0\u2003\u2003(1)'}, 'wherein the spheroidal graphite cast iron contains, in mass ratio, 0.015 to 0.045% Ti, V and Nb in total and further, contains Ti, V, Nb and N so as to satisfy the following expression (1)here, the element symbols in the expression (1) represent the contents [mass ratio (%)] of the elements in the spheroidal graphite cast iron.8. The spheroidal graphite cast iron according to claim 6 ,wherein the spheroidal graphite cast iron contains, in mass ratio, not less than 0.005% P and not less than 0.005% S.9. The spheroidal graphite cast iron according to claim 6 ,wherein the spheroidal graphite cast iron contains, in mass ratio, not less than 0.2% Mn and not less than 0.1% Cu.10. The spheroidal graphite cast iron according to claim 6 ,wherein the spheroidal graphite cast iron is not less ...

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Номер записи: 39
10-03-2016 дата публикации

LASER CLADDING MECHANICAL FACE SEALS

Номер: US20160067825A1
Автор: Cavanaugh Daniel, Haas Connor, MARCHIONE Thierry, SORDELET DANEIL, VERTENTEN DANIEL
Принадлежит: CATERPILLAR INC.

A method of producing a mechanical face seal, the method including a step of obtaining a cast or wrought substrate part having an inner diameter, outer diameter, and a planar surface. The method may include an exposing step to expose the planar surface to a laser. The method may further include a supply step to supply a coating material to a location at or near the laser on the planar surface in order for the coating material to form a metallurgical bond with the substrate part. 1. A method of producing a tightly dimensionally controlled mechanical face seal , the method comprising:forming a cast or wrought substrate part, the substrate part having an inner diameter, an outer diameter, and a planar surface extending between the inner diameter and the outer diameter;supplying a coating material to a top layer of the planar surface, the coating material comprising at least one of a Fe-based alloy, a Ni-based alloy, and a Co-based alloy; andexposing a laser to at least the planar surface, the exposing including tracing the top layer of the planar surface to melt a top surface of the substrate part and the coating material together to form a metallurgical bond.2. The method of claim 1 , wherein the supplying includes feeding a powder stream or a wire of the coating material to the top layer of the planar surface.3. The method of claim 2 , wherein the supplying includes controlling a feed rate of the powder stream or the wire to form an intermediate layer at a location of a top surface of the planar surface prior to the exposing claim 2 , the intermediate layer having a combination of the coating material and a material of the substrate part melted together claim 2 , andwherein a cladding layer is formed above the intermediate layer.4. The method of claim 3 , wherein the intermediate layer and the cladding layer form a coating surface on the substrate part that is free of cracks.5. The method of claim 1 , wherein the supplying includes feeding a powder stream or a wire ...

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Номер записи: 40
29-05-2014 дата публикации

Methods for treating a cast iron workpiece

Номер: US20140143992A1
Автор: Jeff Wang, Xiaochuan XIONG
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Examples of methods for treating a cast iron workpiece are disclosed herein. In one example of the method, a nanocrystallized microstructure at a finish surface of the cast iron workpiece is roller burnished. The roller burnishing reduces roughness of the nanocrystallized microstructure. In another example of the method, a machined, finish surface of the cast iron workpiece is deformed by rubbing the machined, finish surface against a blunt tool to form a nanocrystallized microstructure at the machined, finish surface. The machined, finish surface is cooled simultaneously with the deforming to promote nanocrystallization of the machined, finish surface.

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Номер записи: 41
09-03-2017 дата публикации

CHROMIUM FREE AND LOW-CHROMIUM WEAR RESISTANT ALLOYS

Номер: US20170066090A1
Автор: Eibl Cameron
Принадлежит:

Disclosed herein are embodiments of hardfacing/hardbanding materials, alloys, or powder compositions that can have low chromium content or be chromium free. In some embodiments, the alloys can contain transition metal borides and borocarbides with a particular metallic component weight percentage. The disclosed alloys can have high hardness and ASTM G65 performance, making them advantageous for hardfacing/hardbanding applications. 1. A low chromium or chromium-free ferrous alloy comprising less than or equal to about 3 wt. % chromium , wherein the alloy is formed into or configured to form a material comprising , under equilibrium solidification conditions:a total mole fraction of transition metal borides and borocarbides of between about 5 and about 50%, wherein a metallic portion of the transition metal borides and borocarbides comprises greater than or equal to about 15 wt. % W+Mo; anda mole fraction of isolated carbides in the material between about 5 and about 40%, wherein isolated carbides are defined as MC type carbides having one or more of the following elements: V, Ti, Nb, Zr, Hf, W, Mo.2. The alloy of claim 1 , wherein the isolated carbides have a metallic component greater than or equal to about 50 wt. % vanadium.3. The alloy of claim 1 , comprising less than or equal to about 0.01 wt. % chromium.4. The alloy of claim 1 , wherein a mole fraction of an embrittling hard phase in the material comprising FeB claim 1 , M(C claim 1 ,B) claim 1 , M(C claim 1 ,B) claim 1 , and M(C claim 1 ,B) is less than or equal to about 10% when measured at a matrix solidus temperature claim 1 , wherein M is greater than or equal to about 75 wt. % Fe.5. The alloy of claim 1 , wherein the metallic portion of the transition metal borides and borocarbides comprise greater than or equal to about 35 wt. % W+Mo.6. The alloy of claim 1 , wherein an FCC-BCC transition temperature of the material under equilibrium solidification conditions is less than or equal to about 1300K.7. The ...

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Номер записи: 42
08-03-2018 дата публикации

NON-MAGNETIC METAL ALLOY COMPOSITIONS AND APPLICATIONS

Номер: US20180066345A1
Автор: Cheney Justin Lee, Madok John Hamilton, Rafa Kyle Walter
Принадлежит:

Disclosed are non-magnetic metal alloy compositions and applications that relate to non-magnetic metal alloys with excellent wear properties for use in dynamic three-body tribological wear environments where an absence of magnetic interference is required. In one aspect, the disclosure can relate to a drilling component for use in directional drilling applications capable of withstanding service abrasion. In a second aspect, a hardbanding for protecting a drilling component for use in directional drilling can be provided. In a third aspect, a method for prolonging service life of a drilling component for use in directional drilling can be provided. 120.-. (canceled)21. A hardbanding layer comprising: Mn: 8-20;', 'Nb: 2-8;', 'V: 0-3;', 'C: 1-6;', 'B: 0-1.5;', 'W: 0-10; and', 'Ti: 0-0.5;, 'a composition, in wt. %, comprising Fe andhard particles having an average particle size of 100 nm to 20 μm in an amount up to 50 vol. %;a macro-hardness of 40 HRC or greater; anda relative magnetic permeability of less than 1.02.22. The hardbanding layer of claim 21 , wherein the hardbanding layer comprises an austenitic matrix.23. The hardbanding layer of claim 21 , wherein the hard particles have an average size of between 1-5 μm in an amount up to 30 vol. %.24. The hardbanding layer of claim 21 , wherein the composition further comprises chromium.25. The hardbanding layer of claim 24 , wherein the composition further comprises claim 24 , in wt. % claim 24 , Cr: 15-18.26. The hardbanding layer of claim 21 , wherein the composition contains no boron.27. The hardbanding layer of claim 21 , wherein the composition is characterized as having a magnetic permeability of less than 1.01.28. The hardbanding layer of claim 21 , wherein the composition is characterized as having a magnetic permeability of less than 1.005.29. The hardbanding layer of claim 21 , wherein the composition is characterized as having no magnetic permeability.30. The hardbanding layer of claim 21 , wherein the ...

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Номер записи: 43
19-03-2015 дата публикации

IRON-BASED ALLOYS AND METHODS OF MAKING AND USE THEREOF

Номер: US20150076386A1
Автор: Doll David, Qiao Cong Yue, Trudeau Todd, Vennema Peter
Принадлежит: L.E. Jones Company

An iron-based alloy includes (in weight percent) carbon from about 1 to about 2 percent; manganese up to about 1 percent; silicon up to about 1 percent; nickel up to about 4 percent; chromium from about 10 to about 25 percent; molybdenum from about 5 to about 20 percent; tungsten up to about 4 percent; cobalt from about 17 to about 23 percent; vanadium up to about 1.5 percent; boron up to about 0.2 percent; sulfur up to about 0.03 percent; nitrogen up to about 0.4 percent; phosphorus up to about 0.06 percent; niobium up to about 4 percent; iron from about 35 to about 55 percent; and incidental impurities. The chromium/molybdenum ratio of the iron-based alloy is from about 1 to about 2.5. The alloy is suitable for use in elevated temperature applications, such as valve seat inserts for combustion engines. 1. An iron-based alloy comprising , in weight percent:carbon from about 1 to about 2 percent;manganese up to about 1 percent;silicon up to about 1 percent;nickel up to about 4 percent;chromium from about 10 to about 25 percent;molybdenum from about 5 to about 20 percent;tungsten up to about 4 percent;cobalt from about 17 to about 23 percent;vanadium up to about 1.5 percent;boron up to about 0.2 percent;sulfur up to about 0.03 percent;nitrogen up to about 0.4 percent;phosphorus up to about 0.06 percent;niobium up to about 4 percent;iron from about 35 to about 55 percent; andincidental impurities;wherein the chromium/molybdenum ratio of the iron-based alloy is from about 1 to about 2.5.2. The iron-based alloy of claim 1 , wherein the iron-based alloy consists essentially of claim 1 , in weight percent:carbon from about 1.4 to about 1.9 percent;manganese up to about 1 percent;silicon up to about 1 percent;nickel up to about 1 percent;chromium from about 13 to about 19 percent;molybdenum from about 8 to about 14 percent;tungsten up to about 1 percent;cobalt from about 19 to about 22 percent;vanadium up to about 0.5 percent;niobium up to about 1 percent;nitrogen up to ...

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Номер записи: 44
07-03-2019 дата публикации

SPHEROIDAL GRAPHITE CAST IRON, CAST ARTICLE AND AUTOMOBILE STRUCTURE PART MADE THEREOF, AND METHOD FOR PRODUCING SPHEROIDAL GRAPHITE CAST IRON ARTICLE

Номер: US20190071756A1
Автор: WANG Lin
Принадлежит: HITACHI METALS, LTD.

A spheroidal graphite cast iron meeting N≥250, N/N≥0.6, and N/N≤0.2, wherein Nrepresents the number (/mm) of graphite particles having equivalent-circle diameters of 5 μm or more, Nrepresents the number (/mm) of graphite particles having equivalent-circle diameters of 5 μm or more and less than 20 μm, and Nrepresents the number (/mm) of graphite particles having equivalent-circle diameters of 30 μm or more, among graphite particles observed in an arbitrary cross section of at least 1 mm. 1. A spheroidal graphite cast iron , wherein graphite particles observed in an arbitrary cross section of at least 1 mmmeet{'br': None, 'i': 'N', 'sub': '(5-)', '≥250,'}{'br': None, 'i': N', '/N, 'sub': (5-20)', '(5-), '≥0.6, and'}{'br': None, 'i': N', '/N, 'sub': (30-)', '(5-), '≤0.2,'}{'sub': (5-)', '(5-20)', '(30-), 'sup': 2', '2', '2, 'wherein Nrepresents the number (/mm) of graphite particles having equivalent-circle diameters of 5 μm or more, Nrepresents the number (/mm) of graphite particles having equivalent-circle diameters of 5 μm or more and less than 20 μm, and Nrepresents the number (/mm) of graphite particles having equivalent-circle diameters of 30 μm or more.'}2. The spheroidal graphite cast iron according to claim 1 , wherein said graphite particles meet N≥100 claim 1 , wherein Nrepresents the number (/mm) of graphite particles having equivalent-circle diameters of 2 μm or more and less than 5 μm.3. The spheroidal graphite cast iron according to claim 1 , wherein said graphite particles meet N/N≥0.65.4. The spheroidal graphite cast iron according to claim 1 , wherein said graphite particles meet D≥50.4 μm claim 1 , wherein Drepresents the maximum equivalent-circle diameter of graphite particles.5. The spheroidal graphite cast iron according to claim 1 , wherein said graphite particles meet −0.15≤[N−N]/N≤0.25 claim 1 , wherein Nrepresents the number (/mm) of graphite particles having equivalent-circle diameters of 5 m or more and less than 10 μm claim 1 , and ...

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Номер записи: 45
19-03-2015 дата публикации

POWDER METALLURGICALLY MANUFACTURED HIGH SPEED STEEL

Номер: US20150078951A1
Автор: Sundin Stefan
Принадлежит:

The present invention relates to a high speed steel with a chemical composition that comprises, in % by weight: - C - Cr - Mo max W max Co - V, balance Fe and impurities from the manufacturing of the material, which steel is powder metallurgically manufactured and has a content of Si in the range of Si≦ 1. Powder metallurgical manufactured high speed steel , which has been consolidated without presence of liquid phase , having a chemical composition that comprises , in % by weight:0.6-2.1 C3-5 Cr4-14 Momax 5 Wmax 15 Co0.5-4 V,balance Fe and impurities from the manufacturing of the material, characterised in that it has a content of Si in the range of 0.7 Подробнее

Номер записи: 46
24-03-2022 дата публикации

Vermicular Cast Iron Alloy, Combustion Engine Block and Head

Номер: US20220090238A1
Автор: CABEZAS Carlos De Souza, Martins Maria Furbino, MELLERAS Eitan
Принадлежит:

The present invention refers to a vermicular cast iron alloy specially designed for blocks and heads of internal combustion engines that have special requirements for mechanical strength and machinability; said vermicular alloy has a microstructure that results in high values of mechanical properties, such as a minimum strength limit of 500 Mpa, a minimum yield limit of 350 MPa, along with good machinability; also, wherein the ferritization factor must be such that it is between 3.88 and 5.48. This set of properties makes it possible to design new engine blocks and heads with complex geometry, high mechanical properties, without compromising machinability, making it attractive both from a technical and economic point of view. 1. Vermicular cast iron alloy comprising carbon contents in the range of 2.6% to 3.2% , manganese values between 0.1% to 0.3% , maximum phosphorus of 0.05% , chromium less than 0.06% , tin less than 0.03% and copper less than 0.20%;the alloy characterized by presenting a microstructure with a ferritic matrix comprising at least 90% of ferrite and at least 70% of vermicular graphite;said alloy comprising silicon in the range of 4.60% to 5.70%;and wherein the Ferritization Factor (F.F.) calculated as F.F.=% Si−% Cu−10×% Sn−1.2×% Mn−0.5×% Mn is between 3.88 to 5.48.2. Vermicular cast iron alloy claim 1 , according to characterized in that it presents graphite nodules in up to 30% of the microstructure.3. Vermicular cast iron alloy claim 1 , according to characterized in that it has a minimum strength limit of at least 500 MPa and a minimum yield limit of at least 350 Mpa.4. Internal combustion engine head claim 1 , characterized in that it is manufactured in vermicular cast iron alloy claim 1 , as defined in .5. Internal combustion engine block claim 1 , characterized in that it is manufactured in vermicular cast iron alloy claim 1 , as defined in . The present invention refers to a vermicular cast iron alloy specially designed for blocks and ...

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Номер записи: 47
16-03-2017 дата публикации

IMPACT RESISTANT DUCTILE IRON CASTINGS

Номер: US20170073784A1
Автор: Reiling Jason, SOWDEN Ike S.
Принадлежит:

A highly impact resistant ductile iron casting is made from a specified high nickel content ductile iron composition and post-treated with a specified heating and cooling profile to achieve an elongation exceeding the ASTM A536 (“60-40-18”) standard, and meeting or exceeding Charpy V Notch impact resistance at −20° F. of greater than 11.0 ft. lbs. 1. A ductile iron alloy composition having carbon present in a range of 3.75% to 3.93%;manganese present in a range of 0.10% to 0.19%; phosphorus present in an amount up to 0.032%; sulfur present in an amount up to 0.021%; silicon present in a range of 1.95% to 2.39%; nickel present in a range of 0.81% to 0.99%; copper present in a range of 0.02% to 0.09%; and having a Carbon Equivalence greater than 4.3; the iron composition having a tensile strength of at least 58,000 psi; yield strength at least 38,000 psi; elongation at least 21%; and Charpy V notch impact resistance at −20° F. of at least 11 ft. lbs.2. The ductile iron alloy composition according to claim 1 , wherein the carbon is present in a range of 3.75% to 3.90% claim 1 , the silicon is present in a range of 2.08% to 2.39%; the manganese is present in a range of 0.11% to 0.19%; and the sulfur is present in an amount up to 0.016%.3. The ductile iron alloy composition according to having a tensile strength of at least 60 claim 1 ,000 psi and yield strength of at least 40 claim 1 ,000 psi.4. The ductile iron alloy composition according to claim 1 , wherein the composition is a casting having a maximum thickness up to 4 inches.5. The ductile iron alloy composition according to claim 1 , wherein the composition is a casting used in the rail industry.6. The ductile iron alloy composition of claim 5 , wherein the composition is a casting selected from the group consisting of a bearing housing claim 5 , a lifting hook claim 5 , and a chevron adapter.7. The ductile iron alloy composition according to claim 1 , wherein the composition is hypereutectic and has a Carbon ...

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Номер записи: 48
16-03-2017 дата публикации

HEAT RESISTANT SPHEROIDAL GRAPHITE CAST IRON, METHOD OF MANUFACTURING THE SAME AND ENGINE EXHAUST SYSTEM PART INCLUDING THE SAME

Номер: US20170073798A1
Автор: CHUNG Jong-Kwon, HWANG Jae-Hyoung, JU Young-Kyu, JUNG Ki-Hwan, Kim Sang-Beom, SHIM Dong-Seob, Yang Sik
Принадлежит:

Heat resistant spheroidal graphite cast iron having an improved high temperature tensile strength includes carbon (C) in a range of 3.2-3.4 wt %, silicon (Si) in a range of 4.3-4.8 wt %, manganese (Mn) in a range of 0.2-0.3 wt %, molybdenum (Mo) in a range of 0.8-1.0 wt %, vanadium (V) in a range of 0.4-0.6 wt %, chrome (Cr) in a range of 0.2-0.4 wt %, niobium (Nb) in a range of 0.2-0.4 wt %, inevitable impurities, and a remainder of iron (Fe) based on a total weight of the heat resistant spheroidal graphite cast iron. The heat resistant spheroidal graphite cast iron further includes barium (Ba) in a range of 0.0045-0.0075 wt %. A content ratio of chrome (Cr) and barium (Ba) (Cr/Ba) is in a range from about 26 to about 89. 1. A heat resistant spheroidal graphite cast iron for an engine component , comprising:carbon (C) in a range from about 3.2 weight percent to about 3.4 weight percent, silicon (Si) in a range from about 4.3 weight percent to about 4.8 weight percent, manganese (Mn) in a range from about 0.2 weight percent to about 0.3 weight percent, molybdenum (Mo) in a range from about 0.8 weight percent to about 1.0 weight percent, vanadium (V) in a range from about 0.4 weight percent to about 0.6 weight percent, chrome (Cr) in a range from about 0.2 weight percent to about 0.4 weight percent, niobium (Nb) in a range from about 0.2 weight percent to about 0.4 weight percent, inevitable impurities, and a remainder of iron (Fe), based on a total weight of the heat resistant spheroidal graphite cast iron.2. The heat resistant spheroidal graphite cast iron of claim 1 , wherein the heat resistant spheroidal graphite cast iron has tensile strength of about 670 Mpa or more at a room temperature claim 1 , and has high temperature tensile strength of 100 Mpa or more at 700° C. and of 59 Mpa or more at 800° C.3. The heat resistant spheroidal graphite cast iron of claim 1 , wherein the heat resistant spheroidal graphite cast iron has a thermal expansion coefficient of ...

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Номер записи: 49
05-03-2020 дата публикации

Method for producing die-cast product of spherical graphitic cast iron including ultrafine spherical graphite, and spheroidizing treatment agent

Номер: US20200071780A1
Автор: Haruki ITOFUJI, Masayuki Itamura
Принадлежит: I2c Co Ltd, Tohoku University NUC

The present invention provides a die-cast product producing method and a spheroidizing agent of a spherical graphite cast iron with ultrafine spherical graphite by simple method and good reproducibility. The present invention provides a sand mold producing method and a spheroidizing agent capable of producing an ultrafine spherical graphite cast iron with good reproducibility even in a sand mold thin walled spherical graphite cast iron, which has solidification cooling conditions equivalent to those of a metal mold. The present invention provides a producing method of a die-cast product of a spherical graphite cast iron using a spheroidizing agent, in which a C amount is 0.5 mass % or more, a total nitrogen amount N is 150 ppm (by mass) or less, and a nitrogen amount generated during melting is 15 ppm (by mass) or less, in a producing method of a sand mold cast product of a thin walled spherical graphite cast iron having a melting process, a spheroidizing process, an inoculation process, and a casting process.

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Номер записи: 50
22-03-2018 дата публикации

POWDER METALLURGICALLY MANUFACTURED HIGH SPEED STEEL

Номер: US20180080095A1
Автор: Sundin Stefan
Принадлежит:

The present invention relates to a high speed steel with a chemical composition that comprises, in % by weight: 0.6-2.1 C 3-5 Cr 4-14 Mo max 5 W max 15 Co 0.5-4 V, balance Fe and impurities from the manufacturing of the material, which steel is powder metallurgically manufactured and has a content of Si in the range of 0.7 Подробнее

Номер записи: 51
22-03-2018 дата публикации

MULTI-PROCESS HARDENING METHOD

Номер: US20180080098A1
Автор: Simone Matthew W.
Принадлежит:

Embodiments of multi-process hardened golf club heads and methods of multi-process hardening of golf club heads are generally described herein. Other embodiments and methods may be described and claimed. 1. A method of a club head assembly , the method comprising:(a) providing a golf club head having a recess, and providing a faceplate, wherein the golf club head and the faceplate are formed from an α-β Ti alloy, the α-β Ti alloy comprising between 5.5 wt % to 6.75 wt % aluminum (Al), between 3.5 wt % to 4.5 wt % vanadium (V), a maximum of 0.08 wt % carbon (C), a maximum of 0.03 wt % silicon (Si), a maximum of 0.3 wt % iron (Fe), a maximum of 0.2 wt % oxygen (O), a maximum of 0.015 wt % tin (Sn), and a trace of molybdenum (Mo);(b) aligning the faceplate with the recess of the golf club head;(c) welding the faceplate to the golf club head;(d) heat treating the club head assembly to a temperature just below the β-transus temperature of the α-β Ti alloy for a predetermined amount of time;(e) quenching the club head assembly to room temperature;{'sub': '3', '(f) ageing the club head assembly to a temperature just below the TiAl solution temperature; and'}(g) reducing the temperature of the club head assembly to room temperature by increments of at most 400° C. every hour.2. The method of claim 1 , wherein the club head assembly of step (d) is heat treated in an α-β Ti alloy solution between 425° C. and 550° C.3. The method of claim 1 , wherein the club head assembly of step (e) comprising fluids selected from the group consisting of straight oils claim 1 , water claim 1 , water claim 1 , water soluble fluid claim 1 , micro-dispersion oils claim 1 , and synthetic or semi-synthetic fluids.4. The method of claim 1 , wherein the club head assembly of step (e) is quenched at a quenching rate of at least 550° C. per second.5. The method of claim 1 , wherein the club head assembly of step (f) is aged by induction heat with induction heating coils.6. The method of claim 1 , ...

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Номер записи: 52
24-03-2016 дата публикации

PHYSICAL PROPERTY IMPROVEMENT OF IRON CASTINGS USING CARBON NANOMATERIALS

Номер: US20160083812A1
Автор: Pickrell Kevin
Принадлежит: DRESSER-RAND COMPANY

A method is provided for fabricating iron castings for metallic components. The method for fabricating the iron castings may include forming a molten solution by melting carbon and iron and combining carbon nanomaterials with the molten solution. A first portion of the carbon nanomaterials combined with the molten solution may be dispersed therein. The method may also include cooling the molten solution to solidify at least a portion of the carbon thereof to fabricate the iron castings. The first portion of the carbon nanomaterials may be dispersed in the iron castings. 1. A method for fabricating iron castings for a metallic component , comprising:forming a molten solution by melting carbon and iron;combining carbon nanomaterials with the molten solution, a first portion of the carbon nanomaterials dispersed in the molten solution; andcooling the molten solution to solidify at least a portion of the carbon thereof, thereby fabricating the iron castings, the first portion of the carbon nanomaterials dispersed in the iron castings.2. The method of claim 1 , further comprising dissolving a second portion of the carbon nanomaterials in the molten solution claim 1 , the second portion of the carbon nanomaterials having a defect density greater than a defect density of the first portion of the carbon nanomaterials.3. The method of claim 1 , wherein the carbon nanomaterials are selected from the group consisting of carbon nanotubes claim 1 , buckyballs claim 1 , fullerenes claim 1 , and combinations thereof.4. The method of claim 1 , further comprising functionalizing the carbon nanomaterials such that one or more chemical moieties are associated therewith.5. The method of claim 1 , wherein the carbon nanomaterials increase nucleation sites for the solidification of the at least a portion of the carbon dissolved in the molten solution.6. The method of claim 1 , wherein the carbon nanomaterials comprise carbon nanotubes claim 1 , the carbon nanotubes having a tubular ...

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Номер записи: 53
26-03-2015 дата публикации

High rigid spheroidal graphite cast iron

Номер: US20150086410A1
Автор: Tadaaki Kanbayashi, Tomoyuki Tobita
Принадлежит: Riken Corp

A high rigid spheroidal graphite cast iron, comprising: 2.0 mass % to less than 2.7 mass % or more than 3.0 mass % to less than 3.6 mass % of C, 1.5 to 3.0 mass % of Si, 1.0% or less of Mn, 1.0 mass % or less of Cu, 0.02 to 0.07 mass % of Mg and the residual Fe and inevitable impurities, wherein a carbon equivalent (a CE value) calculated by the mathematical expression (1): CE=C(mass %)+Si (mass %)/3 in terms of C and Si contents is 2.8 to 3.2% within a first range from 2.0 mass % to less than 2.7 mass % of C and is 3.6 to 4.2% within a second range from more than 3.0 mass % to less than 3.6 mass % of C, and the Young's modulus is 170 G or more.

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Номер записи: 54
12-06-2014 дата публикации

COMPACTED GRAPHITE IRON, ENGINE CYLINDER HEAD AND VEHICLE

Номер: US20140161657A1
Автор: LEE Jeong Seop, Nam Duk Hyun
Принадлежит: HYUNDAI MOTOR COMPANY

A compacted graphite iron having composition comprising: Fe as a major ingredient, C: of about 3.4˜4.2 wt %, Si: of about 1.5˜2.5 wt %, P: 0.10 wt % or less (not including 0), S: of about 0.10 wt % or less (not including 0), Cr: of about 0.10 wt % or less (not including 0), Mn: of about 0.1˜0.6 wt %, Cu: of about 0.2˜1.6 wt %, Sn: of about 0.1 wt % or less (not including 0), Mg: of about 0.05 wt % or less (not including 0), Mo: of about 0.05˜0.5 wt %, at least one ingredient of V: of about 0.05˜0.5 wt % and Ti: of about 0.05˜0.5 wt %, and other inevitable impurities; an engine cylinder head; and a vehicle. 1. A compacted graphite iron having composition comprising: Fe as a major ingredient , C: of about 3.4˜4.2 wt % , Si: of about 1.5˜2.5 wt % , P: of about 0.10 wt % or less (not including 0) , S: of about 0.10 wt % or less (not including 0) , Cr: of about 0.10 wt % or less (not including 0) , Mn: of about 0.1˜0.6 wt % , Cu: of about 0.2˜1.6 wt % , Sn: of about 0.1 wt % or less (not including 0) , Mg: of about 0.05 wt % or less (not including 0) , Mo: of about 0.05˜0.5 wt % , at least one ingredient of V: of about 0.05˜0.5 wt % and Ti: of about 0.05˜0.5 wt % , and other inevitable impurities.2. An engine cylinder head manufactured with the composition comprising the compacted graphite iron according to .3. A vehicle equipped with an engine cylinder head manufactured with the composition comprising the compacted graphite iron according to . This application claims under 35 U.S.C. §119(a) the benefit of Korean Patent Application No. 10-2012-0144952 filed on Dec. 12, 2012 the entire contents of which are incorporated herein by reference.(a) Technical FieldThe present invention relates to a CGI (compacted graphite iron), which is suitable to be used to vehicle parts and the like such as engine cylinder heads, particularly to a compacted graphite iron having excellent tensile strength and thermo-mechanical fatigue life, an engine cylinder head formed with the compacted ...

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Номер записи: 55
12-03-2020 дата публикации

Black Heart Malleable Cast-Iron and Method for Manufacturing Same

Номер: US20200080173A1
Автор: Fukaya Takayuki, Goto Ryo, Matsui Hiroshi, Matsuura Kenta
Принадлежит: HITACHI METALS, LTD.

Provided is a black heart malleable cast iron and a method for manufacturing the same which can significantly shorten the time required for graphitization, as compared with the prior art. The black heart malleable cast iron includes a matrix of ferrite and lump graphite included in the matrix, and includes at least one selected from the group consisting of (i) 0.0050% by mass or more and 0.15% by mass or less of bismuth and 0.020% by mass or more of manganese, and (ii) 0.0050% by mass or more and 1.0% by mass or less of aluminum and 0.0050% by mass or more of nitrogen. In addition, the grain size of the matrix is 8.0 or more and 10.0 or less in terms of grain size number, numerically determined by comparison between a metallographic photograph of the matrix and a standard grain size chart. 1. A black heart malleable cast iron comprising a matrix of ferrite and lump graphite included in the matrix , the black heart malleable cast iron comprising at least one selected from the group consisting of:(i) 0.0050% by mass or more and 0.15% by mass or less of bismuth and 0.020% by mass or more of manganese; and 'a grain size of the matrix is 8.0 or more and 10.0 or less in terms of grain size number, numerically determined by comparison between a metallographic photograph of the matrix and a standard grain size chart.', '(ii) 0.0050% by mass or more and 1.0% by mass or less of aluminum and 0.0050% by mass or more of nitrogen, wherein'}2. The black heart malleable cast iron according to claim 1 , wherein the lump graphite is present while being dispersed at positions of crystal grain boundaries of the matrix.3. The black heart malleable cast iron according to claim 1 , wherein an average particle diameter of particles of the lump graphite is 10 micrometers or more and 40 micrometers or less.4. The black heart malleable cast iron according to claim 1 , wherein the number of particles of the lump graphite per square millimeter of a cross-sectional area thereof is 200 or more ...

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Номер записи: 56
25-03-2021 дата публикации

A Non-Magnesium process to produce Compacted Graphite Iron (CGI)

Номер: US20210087658A1
Автор: RADHAKRISHNAN HARISANKAR, Sivaraman Srikanth, SPINIVASAN Nadimuthu, Subhramanyam Gowri
Принадлежит:

The present invention pertains to a non-magnesium process to produce Compacted Graphite Iron (CGI) by placing a treatment alloy into a treatment ladle, and then placing an inoculant over die treatment alloy in the treatment ladle and pouring a molten base metal there over. The treatment alloy comprises iron, silicon and, lanthanum, wherein lanthanum is 3-30% by weight of the treatment alloy, silicon is 40-50% by weight of the treatment alloy, and the remaining is Iron. Lanthanum in the treatment alloy makes the graphite precipitate as vermiculite (compacted form) instead of flake or spheroids. With extended process window offered by this new process (0.03-0.1% residual lanthanum in the metal) required to make CGI, this new process removes the stringent process control (0.01-0.02% residual magnesium in the metal) dictated by the magnesium process of making CGI. 1. A non-magnesium process to produce Compacted Graphite Iron comprising by placing a treatment alloy into a treatment ladle , placing an inoculants there over in the treatment ladle and pouring a molten base metal there overWherein said treatment alloy comprises iron, silicon and lanthanum, wherein the lanthanum is 3-30% by weight of the treatment alloy, and silicon is 40-50% by weight of the treatment alloy and the remaining is Iron.2. The non-magnesium process to produce Compacted Graphite Iron according to claim 1 , wherein said lanthanum is in range of 3-10% by weight of the treatment alloy.3. The non-magnesium process to produce Compacted Graphite Iron according to any of the claims 1 , wherein the treatment alloy further comprises at least one of calcium and aluminum or in combination thereof claims 1 , wherein calcium and aluminum is in range of 0.5-3% each by weight of the treatment alloy.4. The non-magnesium process to produce Compacted Graphite Iron according to any of the claims 1 , wherein said required addition percent of treatment alloy is 0.4-2% by weight of the composition of said base metal ...

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Номер записи: 57
25-03-2021 дата публикации

DISC/BRAKE FRICTION TORQUE FOR RAILWAY VEHICLES

Номер: US20210088093A1
Автор: Boffelli Roberto, DE SOCCIO Vittorio
Принадлежит:

A disc/brake friction torque for railway vehicles consisting of at least one pad comprising at least one friction element and a disc. The friction element is made of a sintered material comprising copper, iron, graphite, 0.02 to 1.5% by weight of molybdenum, 1 to 3% by weight of chrome and a porosity ranging from 20 to 35%; and the disc is made of cast iron comprising 0.05 to 2% by weight of chrome, 0.05 to 2% by weight of molybdenum, 0.1 to 2% by weight of nickel. 1. A disc/brake friction torque for railway vehicles , the disc/brake friction torque consisting of:at least one pad including at least one friction element and a disc;wherein said at least one friction element is made of a sintered material including copper, iron, graphite, 0.02 to 1.5% by weight of molybdenum, 1 to 3% by weight of chrome, and a porosity ranging from 20 to 35%; andwherein said disc is made of cast iron comprising 0.05 to 2% by weight of chrome, 0.05 to 2% by weight of molybdenum, 0.1 to 2% by weight of nickel.2. The disc/brake friction torque according to claim 1 , wherein said sintered material of said at least one friction element includes 0.05 to 1% by weight of molybdenum claim 1 , 1 to 1.5% by weight of chrome claim 1 , and a porosity ranging from 25 to 30%.3. The disc/brake friction torque according to claim 1 , wherein said sintered material of said at least one friction element includes 10 to 70% by weight of copper claim 1 , 5 to 40% by weight of iron claim 1 , 5 to 20% by weight of graphite claim 1 , and 5 to 20% by weight of friction modifiers.4. The disc/brake friction torque according to claim 1 , wherein the cast iron making up the disc includes 0.1 to 2% by weight of chrome claim 1 , 0.1 to 2% by weight of molybdenum claim 1 , and 0.5 to 1.5% by weight of nickel.5. The disc/brake friction torque according to claim 1 , wherein the cast iron making up the disc includes 3 to 5% by weight of carbon claim 1 , 1 to 2% by weight of silicon claim 1 , 0.5 to 1% by weight of ...

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Номер записи: 58
28-03-2019 дата публикации

CYLINDRICAL MEMBER MADE OF FLAKE GRAPHITE CAST IRON

Номер: US20190093203A1
Автор: Hatakeyama Koichi, Sato Akira, SAYAMA Akira
Принадлежит:

Provided is a cylindrical member made of flake graphite cast iron that has practical processability as well as excellent mechanical strength and further is excellent in abrasion resistance and seizing resistance. Specifically, provided is a cylindrical member made of flake graphite cast iron, the flake graphite cast iron including a composition containing, in terms of mass %, 2.85% or more and 3.35% or less of C, 1.95% or more and 2.55% or less of Si, 0.45% or more and 0.8% or less of Mn, 0.03% or more and 0.25% or less of P, 0.15% or less of S, 0.15% or more and 0.55% or less of Cr, 0.15% or more and 0.65% or less of Mo, 0.15% or more and 0.65% or less of Ni, and the balance of Fe and inevitable impurities. 1. A cylindrical member made of flake graphite cast iron ,the flake graphite cast iron comprising a composition containing, in terms of mass %, 2.85% or more and 3.35% or less of C, 1.95% or more and 2.55% or less of Si, 0.45% or more and 0.8% or less of Mn, 0.03% or more and 0.25% or less of P, 0.15% or less of S, 0.15% or more and 0.55% or less of Cr, 0.15% or more and 0.65% or less of Mo, 0.15% or more and 0.65% or less of Ni, and the balance of Fe and inevitable impurities.2. A cylindrical member made of flake graphite cast iron ,the flake graphite cast iron comprising a composition containing, in terms of mass %, 2.85% or more and 3.35% or less of C, 1.95% or more and 2.55% or less of Si, 0.45% or more and 0.8% or less of Mn, 0.03% or more and 0.25% or less of P, 0.15% or less of S, 0.15% or more and 0.55% or less of Cr, 0.15% or more and 0.65% or less of Mo, 0.15% or more and 0.65% or less of Ni, 0.05% or more and 0.55% or less of Cu, and the balance of Fe and inevitable impurities.3. (canceled)4. The cylindrical member made of flake graphite cast iron according to claim 1 , wherein the flake graphite cast iron has a structure containing at least one kind of base selected from the group consisting of pearlite and bainite.5. The cylindrical member made of ...

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Номер записи: 59
26-03-2020 дата публикации

AS-CAST HIGH STRENGTH NODULAR IRON WITH FAVORABLE MACHINABILITY

Номер: US20200095655A1
Автор: Cremonesi James D., Gerard Dale A., Velasco Orosco Eduardo, Wang Qigui, Yang Jianghuai
Принадлежит:

A nodular iron alloy and automotive components, such as crankshafts, are provided. The nodular iron alloy may include iron, about 3.3-3.9 wt % carbon, about 0.2-0.5 wt % manganese, about 1.9-2.6 wt % silicon, about 0.15-0.30 wt % copper, about 0.03-0.06 wt % magnesium, about 0-0.02 wt % sulfur, about 0-0.1 wt % chromium, about 0-0.05 wt % phosphorus, and/or about 0-0.01 wt % tin. The nodular iron alloy may include a number of graphite nodules, each having a diameter between 15 and 120 micrometers, and the graphite nodules having a number density of at least 90 per square millimeter. Iron may surround the graphite nodules in an amount of 20-40% of a ferrite microstructure and 60-80% of a pearlite microstructure. The nodular iron alloy may have an ultimate tensile strength in the range of 550 MPa to 680 MPa as-cast and at least 80% nodularity. 1. A nodular iron alloy comprising:iron;carbon;silicon;about 0.2 to about 0.5 weight percent manganese; andabout 0.15 to about 0.30 weight percent copper.2. The nodular iron alloy of claim 1 , wherein the iron is provided in an amount of at least 92.5 weight percent.3. The nodular iron alloy of claim 2 , wherein the carbon is provided in an amount of about 3.3 to about 3.9 weight percent.4. The nodular iron alloy of claim 3 , wherein the silicon is provided in an amount of about 1.9 to about 2.6 weight percent.5. The nodular iron alloy of claim 4 , further comprising about 0.03 to about 0.06 weight percent magnesium.6. The nodular iron alloy of claim 5 , further comprising tin in an amount not exceeding 0.01 weight percent.7. The nodular iron alloy of claim 6 , further comprising:chromium in an amount not exceeding 0.1 weight percent;phosphorus in an amount not exceeding 0.05 weight percent; andsulfur in an amount not exceeding 0.02 weight percent.8. The nodular iron alloy of claim 5 , wherein the nodular iron alloy has an ultimate tensile strength in the range of 550 MPa to 680 MPa as-cast.9. The nodular iron alloy of claim 8 , ...

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Номер записи: 60
21-04-2016 дата публикации

GRAY CAST IRON FOR CYLINDER LINER AND METHOD FOR MANUFACTURING CYLINDER LINER USING THE SAME

Номер: US20160108503A1
Автор: Nam Duk Hyun
Принадлежит:

A gray cast iron for a cylinder liner is provided that maintains fatigue strength and thermal shock property by adjusting component contents. The gray cast iron includes carbon (C) in an amount of about 3.2 to 3.7 weight % (wt %); silicon (Si) in an amount of about 2.0 to 2.8 wt %; manganese (Mn) in an amount of about 0.50 to 1.0 wt %; phosphorus (P) in an amount of about 0.20 wt % or less, and greater than about 0 wt %; sulfur (S) in an amount of about 0.10 wt % or less, and greater than about 0 wt %; chromium (Cr) in an amount of about 0.50 wt % or less, and greater than about 0 wt %; copper (Cu) in an amount of about 0.20 to 0.80 wt %; molybdenum (Mo) in an amount of about 0.10 to 0.40 wt %; and the balance of iron (Fe), based on the total weight of the gray cast iron. 1. A gray cast iron for a cylinder liner , comprising:carbon (C) in an amount of about 3.2 to 3.7 weight % (wt %) based on the total weight of the gray cast iron;silicon (Si) in an amount of about 2.0 to 2.8 wt % based on the total weight of the gray cast iron;manganese (Mn) in an amount of about 0.50 to 1.0 wt % based on the total weight of the gray cast iron;phosphorus (P) in an amount of about 0.20 wt % or less, and greater than about 0 wt % based on the total weight of the gray cast iron;sulfur (S) in an amount of about 0.10 wt % or less, and greater than about 0 wt % based on the total weight of the gray cast iron;chromium (Cr) in an amount of about 0.50 wt % or less, and greater than about 0 wt % based on the total weight of the gray cast iron;copper (Cu) in an amount of about 0.20 to 0.80 wt % based on the total weight of the gray cast iron;molybdenum (Mo) in an amount of about 0.10 to 0.40 wt % based on the total weight of the gray cast iron; andthe balance of iron (Fe), {'br': None, '0.8≦Cu+1.5Cr+1.2Mo≦1.5\u2003\u2003[Equation 1]'}, 'wherein the gray cast iron satisfies the following Equation 1,'}where Cu, Cr, and Mo respectively mean the contents in wt % of Cu, Cr and Mo components.2. The ...

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Номер записи: 61
19-04-2018 дата публикации

SELF GENERATED PROTECTIVE ATMOSPHERE FOR LIQUID METALS

Номер: US20180104746A1
Автор: "LEsperance Gilles", Beaulieu Philippe, BOISVERT Mathieu, Christopherson, JR. Denis B.
Принадлежит:

An improved method of manufacturing a cast part by sand casting, permanent mold casting, investment casting, lost foam casting, die casting, or centrifugal casting, or a powder metal material by water, gas, plasma, ultrasonic, or rotating disk atomization is provided. The method includes adding at least one additive to a melted metal material before or during the casting or atomization process. The at least one additive forms a protective gas atmosphere surrounding the melted metal material which is at least three times greater than the volume of melt to be treated. The protective atmosphere prevents introduction or re-introduction of contaminants, such as sulfur (S) and oxygen (O), into the material. The cast parts or atomized particles produced include at least one of the following advantages: less internal pores, less internal oxides, median circularity of at least 0.60, median roundness of at least 0.60 and increased sphericity of microstructural phases and/or constituents. 1. A method of manufacturing a powder metal material , comprising the steps of:adding at least one additive to a melted base metal material, the at least one additive forming a protective gas atmosphere surrounding the melted base metal material which has a volume of at least three times greater than the volume of the melted base metal material to be treated; andatomizing the melted base metal material after adding at least some of the at least one additive to produce a plurality of particles.2. The method of claim 1 , wherein the melted base metal material is iron-based claim 1 , and the at least one additive includes magnesium.3. The method of claim 1 , wherein the atomizing step includes water atomizing claim 1 , gas atomizing claim 1 , plasma atomizing claim 1 , ultrasonic atomization or rotating disk atomizing.4. The method of claim 1 , wherein the melted base metal material includes at least one of aluminum (Al) claim 1 , copper (Cu) claim 1 , manganese (Mn) claim 1 , nickel (Ni) claim ...

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Номер записи: 62
09-06-2022 дата публикации

CENTRIFUGALLY CAST COMPOSITE ROLL FOR ROLLING AND METHOD OF MANUFACTURING THE SAME

Номер: US20220176431A1
Автор: ISHIKAWA Shinya, KAMIMIYADA Kazunori, Konno Yuji
Принадлежит: NIPPON STEEL ROLLS CORPORATION

There is provided a centrifugally cast composite roll for rolling having excellent wear resistance and surface deterioration resistance at levels of a high-speed steel cast iron roll and having rolling incident resistance at a level of a high alloy grain cast iron roll. Its outer layer includes chemical components by mass ratio: C: 1.5 to 3.5%; Si: 0.3 to 3.0%; Mn: 0.1 to 3.0%; Ni: 1.0 to 6.0%; Cr: 1.5 to 6.0%; Mo: 0.1 to 2.5%; V: 2.0 to 6.0%; Nb: 0.1 to 3.0%; B: 0.001 to 0.2%; N: 0.005 to 0.070%; and the balance being Fe and inevitable impurities, wherein: a chemical composition of the outer layer satisfies Formula (1) and has 5 to 30% of MC carbide by area ratio; an outer layer Shore hardness (A) of a roll surface satisfies Formula (2); and a residual stress (B) of the roll surface satisfies Formula (3), 1. A centrifugally cast composite roll for rolling having an outer layer ,the outer layer comprising chemical components by mass ratio:C: 1.5 to 3.5%;Si: 0.3 to 3.0%;Mn: 0.1 to 3.0%;Ni: 1.0 to 6.0%;Cr: 1.5 to 6.0%;Mo: 0.1 to 2.5%;V: 2.0 to 6.0%;Nb: 0.1 to 3.0%;B: 0.001 to 0.2%;N: 0.005 to 0.070%; andthe balance comprising Fe and inevitable impurities, wherein:{'sub': '3', 'a chemical composition of the outer layer satisfies following Formula (1) and has 5 to 30% of MC carbide by area ratio;'}an outer layer Shore hardness (A) of a roll surface satisfies following Formula (2); and [{'br': None, '2×Ni+0.5×Cr+Mo>10.0\u2003\u2003(1)'}, {'br': None, 'Hs75≤A≤Hs85\u2003\u2003(2)'}, {'br': None, '100 MPa≤B≤350 MPa\u2003\u2003(3).'}], 'a residual stress (B) of the roll surface satisfies following Formula (3),'}2. The centrifugally cast composite roll for rolling according to claim 1 , wherein Ti: 0.005 to 0.3%;', 'W: 0.01 to 2.0%;', 'Co: 0.01 to 2.0%; and', 'S: 0.3% or less., 'the outer layer further comprises one or more of chemical components by mass ratio3. A method of manufacturing the centrifugally cast composite roll for rolling according to claim 1 , whereinin a ...

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Номер записи: 63
26-04-2018 дата публикации

HIGH RIGID SPHEROIDAL GRAPHITE CAST IRON

Номер: US20180112294A1
Автор: KANBAYASHI Tadaaki, TOBITA Tomoyuki
Принадлежит:

A high rigid spheroidal graphite cast iron, comprising: more than 3.0% to less than 3.6% of C, 1.5 to 3.0% of Si, 1.0% or less of Mn, 1.0% or less of Cu, less than 0.03% of P, 0.02% to 0.07% of Mg, residual Fe and inevitable impurities, as represented by mass %, wherein a carbon equivalent (a CE value) calculated by the mathematical expression (1): CE=C %+Si %/3 in terms of C and Si contents is 3.6 to 4.3%, the Young's modulus is 170 GPa or more, the tensile strength is 550 MPa or more, and the impact value is 12 J/cmor more. 1. A high rigid spheroidal graphite cast iron , comprising:more than 3.0% to less than 3.6% of C, 1.5 to 3.0% of Si, 1.0% or less of Mn, 1.0% or less of Cu, less than 0.03% of P, 0.02% to 0.07% of Mg, residual Fe and inevitable impurities, as represented by mass %, wherein{'sup': '2', "a carbon equivalent (a CE value) calculated by the mathematical expression (1): CE=C %+Si %/3 in terms of C and Si contents is 3.6 to 4.3%, the Young's modulus is 170 GPa or more, the tensile strength is 550 MPa or more, and the impact value is 12 J/cmor more."}2. The high rigid spheroidal graphite cast iron according to claim 1 , wherein the total contents of Mn and Cu are 0.45 to 0.70% claim 1 , as represented by mass %.3. The high rigid spheroidal graphite cast iron according to claim 1 , a ratio (P/(Mn+Cu)) of the P content and the total contents of Mn and Cu is 0.050 or less claim 1 , as represented by mass %. The present invention relates to spheroidal graphite cast iron, and, more particularly, to high rigid spheroidal graphite cast iron suitably applied to vehicle parts such as an undercarriage including a knuckle, a suspension arm and a brake caliper, and engine parts including a crank shaft, a cam shaft and a piston ring.In order to improve fuel efficiency and to respond environmental issues, lightweight vehicle parts are demanded. A high rigid material used for the parts is also needed. A variety of materials are used for the vehicle parts. Cast iron ...

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Номер записи: 64
25-08-2022 дата публикации

Method for Producing a Brake Element, Brake Element

Номер: US20220267873A1
Автор: Bozovic Ilija, Englert Karl-Otto, Le Barzic Laurent, Linek Karl-Heinz, Raab Roland
Принадлежит:

A method is disclosed for producing a brake element, in particular a brake disk or brake drum, which has a friction portion and a fastening portion, wherein a blank for at least the friction portion is produced by a casting method from gray cast iron with lamellar graphite, wherein the blank is subjected to austenitizing at a predefined austenitizing temperature, and wherein the austenitized blank is subjected to austempering at a predefined austempering temperature. The friction portion and the fastening portion is produced in one piece, and that the fastening portion is produced with a wall thickness of at least 1.5 and at most 4.5 mm. 1. A method for producing a brake element which has a friction portion and a fastening portion , comprising:(a) producing a blank for at least the friction portion by a casting method from gray cast iron with lamellar graphite;(b) subjecting the blank to a first austenitizing process at a first predefined austenitizing temperature so as to produce an intermediate austenitized blank; and(c) subjecting the intermediate austenitized blank to a second austenitizing process at a second predefined austenitizing temperature so as to produce the brake element,wherein step (a) includes (i) producing the friction portion and the fastening portion to be configured as one piece, and (ii) producing the fastening portion with a wall thickness of at least 1.5 and at most 4.5 mm.2. The method according to claim 1 , wherein step (a) further includes producing the fastening portion with a wall thickness of at least 2 mm and at most 4 mm.3. The method according to claim 1 , wherein the first austenitizing process has a duration of between 30 minutes to 120 minutes.4. The method according to claim 1 , wherein the first predefined austenitizing temperature is between 790° C. and 915° C.5. The method according to claim 1 , wherein the second austenitizing process has a duration of 2 hours to 5 hours.6. The method according to claim 1 , wherein the second ...

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Номер записи: 65
25-04-2019 дата публикации

Method for Producing an Improved Ductile Iron Alloy with Pearlitic Matrix

Номер: US20190119795A1
Автор: Lagoon Colin, Lagoon Mathew
Принадлежит:

The invention relates to a method for producing ductile iron alloys and products thereof, and in particular ductile iron alloys with at least a partial pearlitic structure. The inventors have sought to develop an improved iron alloy for providing vehicle parts, in particular disc brake rotors. The method for producing a ductile iron alloy comprises the steps of: heating a steel composition in a furnace to produce a molten steel; transferring said molten steel to an inoculation ladle; inoculating said molten steel with an inoculant for a predetermined inoculation time to produce an inoculated molten steel; and pouring said inoculated molten steel into a mould to produce a ductile iron alloy with at least a partial pearlitic structure. 1. A method for producing a ductile iron alloy , comprising the steps of:i) heating a steel composition in a furnace to produce a molten steel;ii) transferring said molten steel to an inoculation ladle;iii) inoculating said molten steel with an inoculant for a predetermined inoculation time to produce an inoculated molten steel;iv) pouring said inoculated molten steel into a mould to produce a ductile iron alloy with at least a partial pearlitic structure.2. The method according to claim 1 , wherein said inoculant includes one or more of ferrosilicon claim 1 , calcium claim 1 , aluminium claim 1 , copper claim 1 , and molybdenum.3. The method according to claim 1 , wherein said inoculant is covered by a covering means to provide a controlled release of said inoculant in step (iii).4. The method according to claim 3 , wherein said controlled release occurs after substantially all of the molten steel is transferred into the inoculation ladle.5. The method according to claim 1 , wherein said partial pearlitic structure is about 30% to 50% of the structure.6. The method according to claim 1 , wherein said steel composition is provided by a combination of steel scrap claim 1 , pig iron claim 1 , and further additives claim 1 , wherein said ...

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Номер записи: 66
25-04-2019 дата публикации

Brake disc and brake disc manufacturing method

Номер: US20190120309A1
Автор: Beom Suck Han, Jae Hyuk Shin, Jin Pyeong Kim, Se Hoon Kim, Si Young Sung
Принадлежит: KOREA AUTOMOTIVE TECHNOLOGY INSTITUTE

Provided are a brake disc and a brake disc manufacturing method. The brake disc manufacturing method may include a porous metal block preparation operation for preparing a porous metal block having a plurality of pores therein, and an insert casting operation for mounting the porous metal block in a mold and casting a disc plate material to manufacture a brake disc.

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Номер записи: 67
01-09-2022 дата публикации

SPHERICAL GRAPHITE CAST IRON SEMI-SOLID CASTING METHOD AND SEMI-SOLID CAST PRODUCT

Номер: US20220275467A1
Автор: ADACHI Mitsuru, Itamura Masayuki, ITOFUJI Haruki
Принадлежит:

The present invention provides a casting method and cast product of spherical graphite cast iron, in which, even with a small modulus, there is no chill, the spherical graphite in the tissue is further made ultrafine, the dispersion of the particle diameter is small, and the number of the particles is several times that of the conventional one in the as cast state where heat treatment is not carried out. 1. A semi-solidification casting method for casting a spheroidal graphite cast iron cast product comprises;a melting step in which a raw material made of cast iron is heated and melted to obtain a molten metal,a spheroidizing treatment step of spheroidizing the molten metal,an inoculation step of inoculating the molten metal, anda casting step of pouring the molten metal after inoculation from the pouring port, passing through the runner, and filling the product space through the gate,wherein the amount of nitrogen in the molten metal is adjusted so that the amount of nitrogen generated during melting of the casting is 0.9 ppm (mass) or less,the pouring being performed at a temperature between (liquidus temperature+10° C.) and (liquidus line temperature+40° C.), andthe molten metal poured from the pouring port is cooled in the runner and filled at the gate at a temperature within the solid-liquid coexistence temperature region.2. A semi-solidification casting method according to claim 1 , wherein the cooling rate of the molten metal from the pouring temperature to the liquidus temperature after the pouring is 20° C./sec or more.3. A semi-solidification casting method according to claim 1 , wherein a temperature in the solid-liquid coexistence temperature region is 1140 to 1170° C.4. A semi-solidification casting method according to claim 1 , wherein after the filling claim 1 , pressurization is performed.5. A semi-solidification casting method according to comprise claim 1 ,a step of heating a raw material to obtain a molten metal,a step of heating the molten metal ...

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Номер записи: 68
19-05-2016 дата публикации

SPHEROIDIZING TREATMENT METHOD FOR MOLTEN METAL OF SPHEROIDAL GRAPHITE CAST IRON

Номер: US20160138139A1
Автор: Fujimoto Ryosuke, HOMMA Shuhei, NIHEI Yuji, OZEKI Toshiaki, Yokoyama Takashi
Принадлежит:

A graphite spheroidizing agent containing: 30-80 wt % of Si; Mg; RE (rare earth element) which comprises Ce with a purity level of 80-100 wt % or La with a purity level of 80-100 wt %; Ca; and Al is used. The graphite spheroidizing agent is added so as to satisfy the conditions that an amount of RE equivalent to 0.001-0.009 wt % of the total weight of the molten metal, an amount of Ca equivalent to 0.001-0.02 wt % of the total weight of the molten metal, and an amount of Al equivalent to 0.001-0.02 wt % of the total weight of the molten metal are added to the molten metal, and that the molten metal contains 0.03-0.07 wt % of Mg after the graphite spheroidizing treatment. It is possible to suppress crystallization of chunky graphite in a thick section of spheroidal graphite cast iron and deterioration of mechanical properties, with a low cost. 1. A spheroidizing treatment method for spheroidizing graphite by addition of a graphite spheroidizing agent to a molten metal , wherein:the graphite spheroidizing agent contains: 30-80 wt % of Si; Mg; RE (rare earth element) which comprises Ce with a purity level of 80-100 wt % or La with a purity level of 80-100 wt %; Ca; and Al; andthe graphite spheroidizing agent is added so as to satisfy the conditions that an amount of RE equivalent to 0.001-0.009 wt % of the total weight of the molten metal, an amount of Ca equivalent to 0.001-0.02 wt % of the total weight of the molten metal, and an amount of Al equivalent to 0.001-0.02 wt % of the total weight of the molten metal are added to the molten metal, and that the molten metal contains 0.03-0.07 wt % of Mg after the graphite spheroidizing treatment.2. The spheroidizing treatment method according to claim 1 , wherein the graphite spheroidizing agent further contains S claim 1 , and the graphite spheroidizing agent is added such that an amount of RE equivalent to 0.002-0.008 wt % of the total weight of the molten metal is added claim 1 , and a ratio of the amount of RE added to ...

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Номер записи: 69
28-05-2015 дата публикации

NODULAR GRAPHITE CAST IRON AND METHOD FOR FABRICATING VANE USING THE SAME

Номер: US20150144230A1
Автор: PARK Jaebong
Принадлежит: LG ELECTRONICS INC.

A nodular graphite cast iron, a method for fabricating a vane for a rotary compressor using nodular graphite cast iron, and a vane for a rotary compressor using the same are provided. The nodular graphite cast iron includes 3.4 wt % to 3.9 wt % of carbon (C), 2.0 wt % to 3.0 wt % of silicon (Si), 0.3 wt % to 1.0 wt % of manganese (Mn), 0.1 wt % to 1.0 wt % of chromium (Cr), 0.04 wt % to 0.15 wt % of titanium (Ti), less than 0.08 w % of phosphorus (P), less than 0.025 wt % of sulphur (S), 0.03 wt % to 0.05 wt % of magnesium (Mg), 0.02 wt % to 0.04 wt % of rare earth resource, iron (Fe) and impurities as the remnants, and includes a bainite matrix structure, nodular graphite, and 15 vol % to 35 vol % of carbide. 1. A method for fabricating a vane for a compressor , the method comprising:melting a molten metal including 3.4 wt % to 3.9 wt % of carbon (C), 2.0 wt % to 3.0 wt % of silicon (Si), 0.3 wt % to 1.0 wt % of manganese (Mn), 0.1 wt % to 1.0 wt % of chromium (Cr), 0.04 wt % to 0.15 wt % of titanium (Ti), less than 0.08 w % of phosphorus (P), less than 0.025 wt % of sulphur (S), 0.03 wt % to 0.05 wt % of magnesium (Mg), 0.02 wt % to 0.04 wt % of rare earth resource, iron (Fe) and impurities as the remnants;injecting the molten metal into a mold in a casting operation;cooling the mold to obtain a semi-product including nodular graphite and 15 vol % to 35 vol % of carbide;grinding the cooled semi-product to have a predetermined shape in a grinding operation; andthermally treating the grinded product in a heat treatment to transform an austenite matrix structure into a bainite matrix structure.2. The method of claim 1 , further comprising: taking out the molten metal; andapplying a spheroidizing agent to the molten metal.3. The method of claim 1 , wherein the heat treatment comprises:heating the grinded semi-product to 880° C. to 950° C.;maintaining the semi-product at the temperature for 30 to 90 minutes;maintaining the semi-product in a liquid having a temperature ...

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Номер записи: 70
18-05-2017 дата публикации

MODIFICATION BODY

Номер: US20170136537A1
Автор: Menk Werner, Thomas Eric
Принадлежит:

The invention relates to a modification body for the production of spheroidal graphite cast iron and to the method for producing a cast part using the modification body according to the invention, and to the cast part itself. The modification body serves for the production of spheroidal graphite cast iron, in particular with a predominantly ferritic structure, containing a carrier material, preferably an iron-silicon alloy, wherein the modification body contains 7-16 weight percent of boron. 1. A modification body for the production of spheroidal graphite cast iron with a predominantly ferritic structure , the modification body comprising:a carrier material; andboron,wherein the boron content of the modification body is 7-16 percent weight.2. A method for production of a cast part made of spheroidal graphite cast iron , the method comprising:inserting, into a casting system prior to casting, at least one modification body comprising a carrier material and boron, wherein the boron content of the modification body is 7-16 percent weight.3. The method for the production of a cast part made of spheroidal graphite cast iron according to claim 2 , wherein the at least one modification body is inserted claim 2 , prior to casting claim 2 , into the casting system between a pouring cup and a filter.4. The method for the production of a cast part made of spheroidal graphite cast iron according to claim 2 , wherein at least one modification body is added to a melt prior to casting.5. The method for the production of a cast part made of spheroidal graphite cast iron according to claim 2 , wherein a number of the at least one modification body is chosen so as to achieve a boron content in the cast part of 0.002-0.008 percent weight.6. The method for the production of a cast part made of spheroidal graphite cast iron according to claim 2 , wherein a number of the at least one modification body is chosen so as to achieve a Brinell hardness of at most 170 HB.7. A cast part claim 2 ...

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Номер записи: 71
28-05-2015 дата публикации

CORROSION RESISTANT HARDFACING ALLOY

Номер: US20150147591A1
Автор: Bracci Jonathon, Cheney Justin Lee, Madok John Hamilton, Zhang Shengjun
Принадлежит:

Disclosed herein are embodiments of iron-based corrosion resistant hardfacing alloys. The alloys can be designed through the use of different compositional, thermodynamic, microstructural, and performance criteria. In some embodiments, chromium content in the alloy can be increased while avoiding the formation of different hard chromium carbides, thereby increasing the corrosion resistance of the alloy. 1. A work piece having at least a portion of its surface covered by a layer comprising a microstructure comprising:an Fe-based matrix comprising ferrite, austenite, martensite or a combination thereof, whereby the matrix contains a minimum of 8 wt. % chromium;primary hard phases defined as carbides or borides which form 1-20 micron spherical particles at a volume fraction of at least 5%; anda matrix microhardness of at least 300 Vickers;wherein the matrix contains less than 10% mole fraction of iron or chromium containing carbide or borocarbide particles in excess of 5 microns in size.2. The work piece of claim 1 , wherein the matrix does not contain any iron or chromium containing carbide or borocarbide particles in excess of 5 microns in size.3. The work piece of claim 1 , whereas the layer comprises a grain boundary eutectic boride and/or carbide volume fraction of 10% or more.4. The work piece of claim 1 , whereas the layer comprises a grain boundary eutectic boride and/or carbide volume fraction of 10% or less.5. The work piece of claim 1 , wherein the work piece is a steel pipe and the layer coats at least a portion of an interior diameter of the pipe.6. The work piece of claim 1 , wherein the work piece is a steel plate and the layer coats at least a portion of at least one surface of the steel plate.7. The work piece of claim 1 , wherein the layer is deposited using one or more of the following techniques: MIG welding claim 1 , TIG welding claim 1 , sub-arc welding claim 1 , open-arc welding claim 1 , PTA welding claim 1 , laser cladding claim 1 , or thermal ...

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Номер записи: 72
26-05-2016 дата публикации

METHOD FOR RECOVERING A COPPER SULFIDE CONCENTRATE FROM AN ORE CONTAINING AN IRON SULFIDE

Номер: US20160144381A1
Автор: Arnold Gerhard, Greet Christopher, Hamann Ingo, Hitchiner Alan
Принадлежит:

In a method for recovering a copper sulfide concentrate by froth flotation from an ore containing an iron sulfide, wet grinding of the ore with grinding media made of high chromium cast iron alloy having a chromium content of from 10 to 35% by weight is combined with an addition of hydrogen peroxide to the conditioned mineral pulp before or during flotation in order to improve concentrate grade and recovery of copper sulfides.

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Номер записи: 73
30-04-2020 дата публикации

High-strength nodular iron with good weldability and machinability

Номер: US20200131606A1
Автор: Dale A. Gerard, Daniel J. Wilson, David M. Zini, Huaxin Li, Jianghuai Yang
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A nodular iron alloy and automotive components, such as differential and drive axle components, are provided. The nodular iron alloy may include iron, about 3.1-3.3 wt % carbon, about 2.7-4.3 wt % silicon, about 0.15-0.40 wt % manganese, about 0-0.10 wt % magnesium, about 0-0.2 wt % nickel, about 0-0.4 wt % copper, about 0-0.30 wt % chromium, about 0-0.03 wt % phosphorus, and about 0-0.02 wt % sulfur. The nodular iron alloy may have an ultimate tensile strength of at least 620 MPa as-cast. This alloy possesses favorable weldability to weld with steel components without substantial preheating or post heat treatment for a strong and tough weldment, and it has good machinability to facility comprehensive machining operations.

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Номер записи: 74
02-06-2016 дата публикации

TRANSIENT LIQUID PHASE JOINING OF DISSIMILAR MATERIALS

Номер: US20160151854A1
Автор: ZHAI Yang
Принадлежит:

A method of joining dissimilar materials that may include a first part made of cast iron and a second part made of a metal alloy that is not made of cast iron. An insert material may be disposed between the first part and the second part. The insert material may be heated such that at least a portion of the insert material forms a transient phase liquid and bonds to the first part and the second part. 1. A method of joining dissimilar materials comprising:providing a first part made of cast iron;providing a second part made of a metal alloy that is not made of cast iron;providing an insert material that is disposed between and engages the first part and the second part; andheating the insert material such that the insert material forms a transient liquid phase and bonds to the first part and the second part, wherein the first part and the second part do not melt when the insert material is heated.2. The method of wherein the insert material is made of an insert material metal alloy that differs from cast iron and differs from the metal alloy of the second part.3. The method of wherein the insert material metal alloy includes claim 2 , by weight claim 2 , nickel in a range of approximately 5.0% to 20.0%.4. The method of wherein the insert material completely separates the first part from the second part before heating the insert material.5. The method of wherein heating the insert material includes induction heating the first part claim 1 , the second part claim 1 , and the insert material.6. The method of wherein heating the insert material includes electrical resistance heating of the first part claim 1 , the second part claim 1 , and the insert material.7. The method of wherein heating the insert material includes friction welding.8. The method of wherein the insert material is sprayed on the first part.9. The method of wherein the insert material is a film that is disposed on the first part before the insert material engages the second part.10. The method of ...

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Номер записи: 75
07-05-2020 дата публикации

WEAR RESISTANT MATERIAL AND SYSTEM AND METHOD OF CREATING A WEAR RESISTANT MATERIAL

Номер: US20200139431A1
Автор: Boddapati Srinivasarao
Принадлежит: ESCO GROUP LLC

A system and method of forming a wear resistant composite material includes placing a porous wear resistant filler material in a mold cavity and infiltrating the filler material with a matrix material by heating to a temperature sufficient to melt the matrix material, then cooling the assembly to form a wear resistant composite material. The system and method can be used to form the wear resistant composite material on the surface of a substrate, such as a part for excavating equipment or other mechanical part. One suitable matrix material may be any of a variety of ductile iron alloys. 165-. (canceled)66. A wear part for earth engaging equipment comprising:a metal substrate including a working portion for engaging earthen material, the working portion including a surface;an expendable sheet metal shell connected by welding or brazing to the substrate, a portion of the sheet metal shell being spaced from the substrate to define a cavity between the surface of the substrate and the shell; anda composite material substantially filling the cavity and forming a coating on at least a portion of the surface of the substrate, the composite coating comprising a porous wear resistant material infiltrated by a ductile iron matrix material, wherein the matrix material is principally ductile iron and bonds the coating to the working portion and the shell.67. The wear part of claim 66 , wherein the matrix material has a composition comprising claim 66 , in weight percent claim 66 , approximately 3.0-4.0% carbon claim 66 , approximately 1.8-2.8% silicon claim 66 , approximately 0.1-1.0% manganese claim 66 , approximately 0.01-0.03% sulfur claim 66 , and approximately 0.01-0.1% phosphorous claim 66 , with the balance being iron and incidental elements and impurities.68. The wear part of claim 67 , wherein the composition of the matrix material further comprises up to 37 wt. % nickel.69. The wear part of claim 67 , wherein the composition of the matrix material further comprises up ...

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Номер записи: 76
16-05-2019 дата публикации

CAST IRON MATERIAL

Номер: US20190144978A1
Автор: ADACHI Koshi, Hasegawa Tetsuo, Horigome Masami, Kanauchi Katsunori, KAWAI Kiyoyuki, KOIKE Ryo, Kurihara Kazue, MANABE Kazuyoshi, Oizumi Takashi, Sawada Mihoko, Suzuki Atsushi
Принадлежит:

Provided is a cast iron material from which excellent friction characteristics can be obtained. Provided is the cast iron material containing C and Fe as a composition, and further containing Cr as the composition in 1.0 to 3.5% in terms of mass %. The cast iron material is used in a sliding component sliding under an environment of lubricating oil to which an additive containing Mo as a constituent element, such as MoDTC, is added. Cr contained in the cast iron material promotes a decomposition reaction of the additive containing Mo added to the lubricating oil to form a film of molybdenum disulfide, the film having low friction. Thus, the fiction can be reduced. 1. A cast iron material , comprising:carbon (C) and iron (Fe) as a composition; andchromium (Cr) as the composition in 1.0 to 3.5% in terms of mass %; andincluding graphite as a structure, whereinthe cast iron material is used in a sliding component sliding under an environment of lubricating oil containing molybdenum (Mo) as an additive.2. The cast iron material according to claim 1 , comprising at least silicon (Si) from the group consisting of silicon (Si) claim 1 , copper (Cu) and nickel (Ni) as the composition claim 1 , wherein a content thereof is from 2 to 6.5% of Si claim 1 , from 0 to 1.5% of Cu claim 1 , and from 0 to 1.5% of Ni in terms of mass %.3. The cast iron material according to claim 1 , wherein Brinell hardness is from HB200 to HB380.4. The cast iron material according to claim 1 , wherein a film containing molybdenum disulfide is formed on a surface by sliding.5. The cast iron material according to claim 1 , wherein the cast iron material is used in a sliding portion of an engine part and a driving part. The invention relates to a cast iron material having excellent friction characteristics.The present application is based upon and claims the benefit of priority to Japanese Application No. 2017-221363, filed Nov. 16, 2017, the entire contents of which are incorporated herein by ...

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Номер записи: 77
31-05-2018 дата публикации

METHOD FOR TREATING MOLTEN CAST IRON

Номер: US20180148805A1
Автор: FUJIMOTO Ryousuke, HONMA Shuhei
Принадлежит: TOSHIBA KIKAI KABUSHIKI KAISHA

A method for treating molten cast iron includes, performing an inoculation treatment to the molten cast iron, with the use of an inoculant containing: 15 to 80 wt % Si; either 80 to 100 wt % purity La or 80 to 100 wt % purity Ce as RE; Ca; Al; and the balance Fe with inevitable impurities, by adding the inoculant to the molten cast iron such that: the addition amount of La or Ce relative to the molten cast iron is 0.001 to 0.009 wt %; the addition amount of Ca relative to the molten cast iron is 0.001 to 0.02 wt %; and the addition amount of Al relative to the molten cast iron is 0.001 to 0.02 wt %. 1. A method for treating molten cast iron including , performing an inoculation treatment to the molten cast iron , with the use of an inoculant containing: 15 to 80 wt % Si; either 80 to 100 wt % purity La or 80 to 100 wt % purity Ce as RE; Ca; Al; and the balance Fe with inevitable impurities , by adding the inoculant to the molten cast iron such that: the addition amount of La or Ce relative to the molten cast iron is 0.001 to 0.009 wt %; the addition amount of Ca relative to the molten cast iron is 0.001 to 0.02 wt %; and the addition amount of Al relative to the molten cast iron is 0.001 to 0.02 wt %.2. The method for treating molten cast iron according to claim 1 , wherein claim 1 , in the inoculant claim 1 , the content of the Si is 30 to 80 wt % claim 1 , the content of said 80 to 100 wt % purity La or said 80 to 100 wt % purity Ce is 0.1 to 0.6 wt % claim 1 , the content of the Ca is 0.1 to 1.3 wt % claim 1 , and the content of the Al is 0.1 to 2.0 wt %.3. The method for treating molten cast iron according to claim 1 , wherein in the inoculant claim 1 , the content of the Si is 30 to 80 wt/% claim 1 , the content of said 80 to 100 wt % purity La or said 80 to 100 wt % purity Ce is 0.3 to 1.8 wt % claim 1 , the content of the Ca is 0.1 to 6.0 wt % claim 1 , and the content of the Al is 0.1 to 6.0 wt %.4. The method for treating molten cast iron according to claim ...

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Номер записи: 78
31-05-2018 дата публикации

ALLOY CAST IRON HAVING IMPROVED WEAR RESISTANCE, AND PISTON RING COMPRISING SAME

Номер: US20180148808A1
Автор: HAN Geum Tai
Принадлежит:

The present invention relates to an alloy cast iron, and a piston ring containing the same, the alloy cast iron including: a pearlite matrix; and a graphite structure and a steadite-type eutectic structure which are precipitated in the pearlite matrix, wherein the steadite-type eutectic structure includes at least one element selected from boron (B) and vanadium (V), at least one element selected from chromium (Cr) and molybdenum (Mo), and copper (Cu). 1. An alloy cast iron comprising:a pearlite matrix; anda graphite structure and a steadite-type eutectic structure which are precipitated in the pearlite matrix,wherein the steadite-type eutectic structure includes at least one element selected from boron (B) and vanadium (V), at least one element selected from chromium (Cr) and molybdenum (Mo), and copper (Cu).2. The alloy cast iron of claim 1 , wherein in a cross-sectional area of the alloy cast iron claim 1 , a cross-sectional area ratio of the pearlite matrix claim 1 , the graphite structure claim 1 , and the steadite-type eutectic structure is 65 to 85:10 to 30:4 to 7.3. The alloy cast iron of claim 1 , wherein the steadite-type eutectic structure further includes one or two or more selected from phosphorus (P) claim 1 , carbon (C) claim 1 , silicon (Si) claim 1 , manganese (Mn) claim 1 , magnesium (Mg) claim 1 , sulfur (S) claim 1 , nickel (Ni) claim 1 , and tin (Sn).4. The alloy cast iron of claim 3 , wherein it comprises 0.02 to 0.5 wt % of at least one element selected from boron (B) and vanadium (V) claim 3 , 0.1 to 1.2 wt % of at least one element selected from chromium (Cr) and molybdenum (Mo) claim 3 , 0.3 to 1 wt % of copper (Cu) claim 3 , 0.02 to 0.03 wt % of phosphorus (P) claim 3 , 3.2 to 3.8 wt % of carbon (C) claim 3 , 1.8 to 2.8 wt % of silicon (Si) claim 3 , 0.2 to 1 wt % of manganese (Mn) claim 3 , 0.005 to 0.05 wt % of magnesium (Mg) claim 3 , 0.05 wt % or less of sulfur (S) claim 3 , 0 to 0.75 wt % of nickel (Ni) claim 3 , 0 to 0.1 wt % of tin ...

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Номер записи: 79
17-06-2021 дата публикации

High hard phase fraction non-magnetic alloys

Номер: US20210180162A1
Автор: James Nathaniel Vecchio, Justin Lee Cheney
Принадлежит: Oerlikon Metco US Inc

Disclosed herein are embodiments of a non-magnetic iron-based alloy. The alloy can contain high hard phase fractions providing for significant toughness and wear resistance. The alloy can have high austenite content and high toughness in some embodiments. Further, embodiments of the alloy can include a number of large or extremely hard particles.

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Номер записи: 80
09-06-2016 дата публикации

SPHEROIDAL GRAPHITE CAST IRON

Номер: US20160160325A1
Автор: Mito Kazushige, SAITO Naoto
Принадлежит:

A spheroidal graphite cast iron comprising: C: 3.3 to 4.0 mass %, Si: 2.1 to 2.7 mass %, Mn: 0.20 to 0.50 mass %, S: 0.005 to 0.030 mass %, Cu: 0.20 to 0.50 mass %, Mg: 0.03 to 0.06 mass % and the balance: Fe and inevitable impurities, wherein a tensile strength is 550 MPa or more, and an elongation is 12% or more. 1. A spheroidal graphite cast iron comprising: C: 3.3 to 4.0 mass % , Si: 2.1 to 2.4 mass % , Mn: 0.20 to 0.50 mass % , S: 0.005 to 0.030 mass % , Cu: 0.20 to 0.50 mass % , Mg: 0.03 to 0.06 mass % , Mn and Cu: 0.45 to 0.60 mass % in total and the balance: Fe and inevitable impurities ,{'sup': '2', 'wherein a tensile strength is 550 MPa or more, and an elongation is 12% or more, a ratio of the content of Si by mass % and the total contents of Mn and Cu by mass % (Si/(Mn+Cu)) is 4.0 to 5.5, the pearlite ratio is 30 to 55%, and an impact value at normal temperature and −30° C. is 10 J/cmor more.'}23-. (canceled)4. The spheroidal graphite cast iron according to claim 1 , wherein a graphite nodule count is 300/mmor more claim 1 , and an average grain size of graphite is 20 μm or less.5. (canceled)6. The spheroidal graphite cast iron according claim 1 , wherein a percentage brittle fracture of an impact fracture surface at 0° C. is 50% or less.714-. (canceled)15. The spheroidal graphite cast iron according claim 4 , wherein a percentage brittle fracture of an impact fracture surface at 0° C. is 50% or less.16. (canceled) The present invention relates to spheroidal graphite cast iron. In particular, the present invention relates to spheroidal graphite cast iron suitably applied to undercarriage and engine parts of an automobile.In order to improve a fuel efficiency of an automobile or the like, it is increasingly needed to reduce weights of vehicle parts. Examples of reducing the weights of the vehicle parts include that spheroidal graphite cast iron used in the related art is replaced with a light alloy such as an aluminum alloy and a magnesium alloy having a ...

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Номер записи: 81
08-06-2017 дата публикации

SEAL RINGS COMPRISING CHROMIUM AND BORON CAST IRON

Номер: US20170159148A1
Автор: BARNES CHRISTOPHER ALLEN, Pickert Thomas Edward
Принадлежит: CATERPILLAR INC.

A seal ring comprising a chromium and boron containing cast iron alloy composition is disclosed. The cast iron alloy composition comprises each of boron, chromium and silicon in the following amounts: boron up to 1.5 wt. %; chromium from 8 to 14 wt. %; and silicon up to 3.0 wt. %. The seal ring may be produced by melting a cast iron composition further comprising the foregoing alloying elements; pouring the melted alloy into a mold; cooling the melted alloy to form a cast iron seal ring; and separating the cast iron seal ring from the mold. The seal ring is typically used in the undercarriage of earth-working machines, such as in the drive train or power train of such machines. 1. A seal ring , comprising a body having a cast iron composition comprising B , Cr , and Si in the following amounts:B: up to 1.5 wt. %;Cr: 8 to 14 wt. %; andSi: up to 3 wt. %.2. The seal ring of claim 1 , wherein B is present in an amount ranging from 0.5 to 1.0 wt. %.3. The seal ring of claim 1 , wherein Cr is present in an amount ranging from 10 to 14 wt. %.4. The seal ring of claim 1 , wherein Si is present in an amount ranging from 1.5 to 2.4 wt. %.5. The seal ring of claim 1 , wherein the cast iron composition further includes:C: 2.8 to 3.6 wt. %;Mn: 0.40 to 1.0 wt. %;Ni: 3.0 to 5.0 wt. %;V: up to 1.0 wt. %;Mo: up to 0.80 wt. %;P: up to 0.08 wt. %;S: up to 0.2 wt. %; andthe balance comprising Fe and incidental impurities.6. The seal ring of claim 1 , wherein the cast iron composition has a microstructure of less than 50 wt. % carbide.7. The seal ring of claim 1 , wherein the cast iron composition has a microstructure comprising more than 50 wt. % of martensite claim 1 , austenite and combinations thereof.8. The seal ring of claim 1 , wherein at least a surface of the cast iron composition has a Rockwell C hardness ranging from 55 to 70.9. The seal ring of claim 1 , wherein the cast iron composition exhibits a pressure velocity ranging from 300-1000 KN/mm-mm/min.10. The seal ring of ...

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Номер записи: 82
04-09-2014 дата публикации

Centrifugally cast composite roll and its production method

Номер: US20140248511A1
Автор: Nozomu Oda, Takayuki Segawa, Yasunori Nozaki
Принадлежит: Hitachi Metals Ltd

A centrifugally cast composite roll comprising an outer layer made of cast iron having a chemical composition comprising, by mass, 2.7-3.5% of C, 1.5-2.5% of Si, 0.4-1.0% of Mn, 3.7-5.1% of Ni, 0.8-2.2% of Cr, 1.5-4.5% of Mo, 2.0-4.5% of V, and 0.5-2.0% of Nb, the balance being Fe and inevitable impurities, a mass ratio of Nb/V being 0.18-0.65, and a mass ratio of Mo/V being 0.7-2.5, and a structure comprising, by area, 15-45% of a cementite phase and 1-10% of a graphite phase, and an inner layer made of cast iron having excellent mechanical strength and metallurgically bonded to the outer layer; a usable region of the outer layer as deep as 10 mm or more from the surface containing substantially no speck-like-segregated dendrites of bainite and/or martensite having diameters of 1.5 mm or more.

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Номер записи: 83
14-06-2018 дата публикации

BLACK HEART MALLEABLE CAST IRON AND MANUFACTURING METHOD THEREOF

Номер: US20180163281A1
Автор: Goto Ryo
Принадлежит:

A black heart malleable cast iron including carbon of not lower than 2.0% and not higher than 3.4%; silicon of not lower than 0% and not higher than 1.4%; aluminum of not lower than 2.0% and not higher than 6.0%, which are all expressed by percent by mass; and balance iron and inevitable impurities, wherein a value of a carbon equivalent CE expressed by Equation (1) is not lower than 3.0% and not higher than 4.2%, where C denotes a content of the carbon expressed by percent by mass, Si denotes a content of the silicon expressed by percent by mass and Al denotes a content of the aluminum expressed by percent by mass: CE=C+Si/3+Al/8 (1). 18-. (canceled)9. A black heart malleable cast iron comprising:carbon of not lower than 2.0% and not higher than 3.4%;silicon of not lower than 0% and not higher than 1.4%;aluminum of not lower than 2.0% and not higher than 6.0%, which are all expressed by percent by mass; andbalance iron and inevitable impurities, wherein {'br': None, 'CE=C+Si/3+Al/8\u2003\u2003(1).'}, 'a value of a carbon equivalent CE expressed by Equation (1) is not lower than 3.0% and not higher than 4.2%, where C denotes a content of the carbon expressed by percent by mass, Si denotes a content of the silicon expressed by percent by mass and Al denotes a content of the aluminum expressed by percent by mass10. The black heart malleable cast iron according to claim 9 , wherein the content of the silicon is not lower than 0% and not higher than 0.5%.11. The black heart malleable cast iron according to claim 9 , wherein the content of the aluminum is not lower than 4.0% and not higher than 6.0%.12. A method of manufacturing a black heart malleable cast iron comprising:preparing a molten metal by melting a raw material comprising carbon of not lower than 2.0% and not higher than 3.4%, silicon of not lower than 0% and not higher than 1.4%, aluminum of not lower than 2.0% and not higher than 6.0%, which are all expressed by percent by mass, and balance iron and ...

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Номер записи: 84
30-05-2019 дата публикации

CHROMIUM FREE AND LOW-CHROMIUM WEAR RESISTANT ALLOYS

Номер: US20190160603A1
Автор: Eibl Cameron
Принадлежит:

Disclosed herein are embodiments of hardfacing/hardbanding materials, alloys, or powder compositions that can have low chromium content or be chromium free. In some embodiments, the alloys can contain transition metal borides and borocarbides with a particular metallic component weight percentage. The disclosed alloys can have high hardness and ASTM G65 performance, making them advantageous for hardfacing/hardbanding applications. 1. (canceled)2. A thermal spray feedstock material comprising:between about 1.16—about 2.2 wt. % B;between about 2.0—about 2.8 wt. % C;between about 12.5—about 19.5 wt. % Mo;between about 8.0—about 14.0 wt. % V; andFe.3. A coating formed from the thermal spray feedstock material of .4. The coating of claim 3 , wherein the coating is formed from a thermal spray process.5. The coating of claim 4 , wherein the thermal spray process is an arc spray process.6. The coating of claim 3 , wherein the coating has a hardness of greater than or equal to about 55 HRC.7. The thermal spray feedstock material of claim 2 , wherein the thermal spray feedstock material comprises a powder.8. The thermal spray feedstock material of claim 2 , wherein the thermal spray feedstock material is at least one of a first wire claim 2 , a second wire claim 2 , or a combination of the first and second wires.9. The thermal spray feedstock material of claim 2 , wherein the thermal spray feedstock comprises:B: about 1.85;C: about 2.15;Mo: about 15.70;V: about 11.0; andFe.10. The thermal spray feedstock material of claim 2 , wherein the thermal spray feedstock material is configured to form a microstructure and is characterized by having claim 2 , under thermodynamic equilibrium conditions:a total mole fraction of transition metal borides and borocarbides of between about 10 and about 30%, wherein a metallic portion of the transition metal borides and borocarbides comprises greater than or equal to about 15 wt. % W+Mo.11. The thermal spray feedstock material of claim 10 , ...

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Номер записи: 85
21-05-2020 дата публикации

POWDER METAL MATERIAL FOR WEAR AND TEMPERATURE RESISTANCE APPLICATIONS

Номер: US20200156156A1
Автор: "LEsperance Gilles", Beaulieu Philippe, Christopherson, Farthing Leslie John, JR. Denis B., Schoenwetter Todd
Принадлежит:

A powder metal composition for high wear and temperature applications is made by atomizing a melted iron based alloy including 3.0 to 7.0 wt. % carbon; 10.0 to 25.0 wt. % chromium; 1.0 to 5.0 wt. % tungsten; 3.5 to 7.0 wt. % vanadium; 1.0 to 5.0 wt. % molybdenum; not greater than 0.5 wt. % oxygen; and at least 40.0 wt. % iron. The high carbon content reduces the solubility of oxygen in the melt and thus lowers the oxygen content to a level below which would cause the carbide-forming elements to oxidize during atomization. The powder metal composition includes metal carbides in an amount of at least 15 vol. %. The microhardness of the powder metal composition increases with increasing amounts of carbon and is typically about 800 to 1,500 Hv50. 1. A powder metal material , comprising:a plurality of particles, the particles including 3.0 to 7.0 wt. % carbon, 10.0 to 25.0 wt. % chromium, 1.0 to 5.0 wt. % tungsten, 3.5 to 7.0 wt. % vanadium, 1.0 to 5.0 wt. % molybdenum, not greater than 0.5 wt. % oxygen, and at least 40.0 wt. % iron, based on the total weight of the particles;the particles being atomized; andthe particles including metal carbides in an amount of at least 15 vol. %, based on the total volume of the particles.2. The powder metal material according to claim 1 , wherein the metal carbides are present in an amount of 40.0 to 60.0 vol. % claim 1 , based on the total volume of the particles.3. The powder metal material according to claim 2 , wherein the metal carbides are present in an amount of 47.0 to 52.0 vol % claim 2 , based on the total volume of the particles.4. The powder metal material according to claim 1 , wherein the metal carbides include at least one of MC claim 1 , MC claim 1 , MC claim 1 , MC claim 1 , MC claim 1 , and MC claim 1 , wherein M is at least one metal atom claim 1 , such as Fe claim 1 , Cr claim 1 , V claim 1 , Mo claim 1 , and/or W claim 1 , and C is carbon.5. The powder metal material according to claim 4 , wherein the metal ...

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Номер записи: 86
11-09-2014 дата публикации

SPLINE HUB FOR CLUTCH AND MANUFACTURING METHOD THEREOF

Номер: US20140255243A1
Автор: PARK Jaebong
Принадлежит:

A spline hub for a clutch and a manufacturing method thereof are provided. The spline hub may include C: 3.4˜3.9%, Si: 2.1˜2.5%, Mn: 0.2˜0.7%, P: 0.01% or less, S: 0.009˜0.02%, Cu: 0.2˜0.4%, and Mg: 0.04˜0.07% by weight ratio, with the remainder including iron (Fe), as well as other impurities. The material forming the spline hub may have a structure in which spheroidal graphite is precipitated in an austenite matrix structure.

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Номер записи: 87
18-09-2014 дата публикации

METHOD FOR PRODUCING SPHEROIDAL GRAPHITE CAST IRON AND VEHICLE COMPONENT USING SAID SPHEROIDAL GRAPHITE CAST IRON

Номер: US20140271330A1
Автор: Baba Tsukasa, Horiya Takao, Idei Hiroshi, Sato Takashi, Tokiyama Takuya
Принадлежит:

A method for producing spheroidal graphite cast iron having a specific final composition includes: subjecting a molten iron to a spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy containing no rare earth element; conducting an inoculation treatment using a first Fe—Si-based inoculant; and conducting a pouring inoculation treatment with a given amount of a second Fe—Si-based inoculant containing 45-75% of Si, 1-3% of Ca, and 15 ppm or less of Ba. 1. A method for producing spheroidal graphite cast iron containing substantially no rare-earth element , the method comprising:(a) a step of subjecting, in a ladle, a molten iron to a spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg-based alloy containing no rare-earth element or Fe—Si—Mg—Ca-based alloy containing no rare-earth element;(b) a step of conducting an inoculation treatment using a first Fe—Si-based inoculant, either simultaneously with the step (a) or after the step (a); and(c) a step of adding a second Fe—Si-based inoculant to the molten iron in an amount of 0.20 to 0.40% in terms of % by mass after the step (b) to conduct a pouring inoculation treatment, the second Fe—Si-based inoculant containing, in terms of % by mass, 45 to 75% of Si, 1 to 3% of Ca, and 15 ppm or less of Ba,wherein the spheroidal graphite cast iron to be obtained has a composition which contains, in terms of % by mass, 3.0 to 4.5% of C, 3.0 to 4.5% of Si, 0.2 to 0.4% of Mn, 0.006 to 0.020% of S, 0.08 to 0.30% of Cu, 0.020 to 0.040% of Sn, and 0.015 to 0.050% of Mg, with the remainder being Fe and unavoidable impurities.2. The method for producing spheroidal graphite cast iron according to claim 1 , wherein the molten iron has a composition which contains claim 1 , in terms of % by mass claim 1 , 3.0 to 4.5% of C claim 1 , 2.0 to 3.0% of Si claim 1 , 0.2 to 0.4 of Mn claim 1 , 0.006 to 0.020% of S claim 1 , 0.08 to 0.30% of Cu claim 1 , and 0.020 to 0.040% of Sn claim 1 , with the ...

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Номер записи: 88
13-06-2019 дата публикации

NEEDLE-SHAPED CYLINDER LINER AND PREPARATION METHOD THEREFOR, AND COATING LIQUID FOR PREPARING NEEDLE-SHAPED CYLINDER LINER

Номер: US20190176219A1
Автор: DANG Zengjun, HOU Qifei, Liu Zhijun, Wang Yong, XUE Delong
Принадлежит: ZYNP CORPORATION

A coating liquid for preparing a needle-shaped cylinder liner, comprising the following components: 0.05-0.4 parts of an anionic surfactant; 0.05-0.5 parts of tannic acid; 0.15-0.7 parts of caustic soda; 22-38 parts of diatomite; 3-10 parts of montmorillonite; and 62-75 parts of water. A method for preparing a needle-shaped cylinder liner comprises spraying a coating liquid for preparing the needle-shaped cylinder liner onto the inner wall of a hollow cylindrical mould, and drying the coating liquid to obtain a mould with a coating attached to the surface of the inner wall; adding an inoculated iron liquid into the rotary mould, and cooling and demoulding to obtain a cylinder liner blank; and subjecting the blank to outer surface cleaning and forming machining to obtain the needle-shaped cylinder liner. 2. The coating solution according to claim 1 , wherein the anionic surfactant comprises one or more selected from the group consisting of sodium dodecyl benzene sulfonate claim 1 , triethanolamine dodecyl benzene sulfonate claim 1 , surfactant AS and ammonium dodecyl sulfate.3. The coating solution according to claim 1 , wherein the diatomaceous earth has a permeability of 2 to 3.4. The coating solution according to claim 1 , wherein the diatomaceous earth has a bulk density of 0.33 to 0.65 g/cm.5. The coating solution according to claim 1 , wherein the diatomaceous earth has a particle size of 100 to 800 mesh.6. The coating solution according to claim 1 , wherein the montmorillonite has a density of 2.0 to 2.7 g/cm.7. The coating solution according to claim 1 , wherein the montmorillonite has an expansion ratio of 30 to 50.8. The coating solution according to claim 1 , wherein the montmorillonite has a particle size of 0.2 to 1 μm.10. A method for producing a needle-shaped cylinder liner claim 1 , comprising the steps of:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a) spraying the coating solution according to into an inner wall of a hollow cylindrical mold ...

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Номер записи: 89
13-06-2019 дата публикации

HIGH-STRENGTH GRAY CAST IRON

Номер: US20190177821A1
Автор: PARK Hun Young
Принадлежит:

Disclosed herein is a gray cast iron having high strength and reduced casting defects. The high-strength gray cast iron may include: an amount of about 3.10 to 3.50 wt % of carbon (C), an amount of about 2.10 to 2.40 wt % of silicon (Si), an amount of about 0.50 to 0.80 wt % of manganese (Mn), an amount less than or equal to about 0.10 wt % (not including 0%) of phosphorus (P), an amount less than or equal to about 0.10 wt % (not including 0%) of sulfur (S), an amount of about 0.25 to 0.45 wt % of chromium (Cr), an amount of about 1.00 to 1.40 wt % of copper (Cu), an amount less than or equal to about 0.20 wt % (not including 0%) of nickel (Ni), and a balance of iron (Fe), all the wt % are based on the total weight of the gray cast iron. In particular, the gray cast iron may include a carbon equivalent (CEQ) of about 3.95 to 4.1% calculated by the Equation 1. 1. A gray cast iron , comprising:an amount of about 3.10 to 3.50 wt % of carbon (C),an amount of about 2.10 to 2.40 wt % of silicon (Si),an amount of about 0.50 to 0.80 wt % of manganese (Mn),an amount of less than or equal to about 0.10 wt % (not including 0%) of phosphorous (P),an amount of less than or equal to about 0.10 wt % (not including 0%) of sulfur (S),an amount of about 0.25 to 0.45 wt % of chromium (Cr),an amount of about 1.00 to 1.40 wt % of copper (Cu),an amount of less than or equal to about 0.20 wt % (not including 0%) of nickel (Ni), anda balance of iron (Fe),all the wt % are based on the total weight of the gray cast iron, {'br': None, 'Carbon equivalent (CEQ)=C+⅓(Si+P),\u2003\u2003[Equation 1]'}, 'wherein the gray cast iron has a carbon equivalent (CEQ) of about 3.95 to 4.1% calculated by the following equation 1where each of C, Si, and Pin the Equation 1 represents an element content (wt %).2. The gray cast iron according to claim 1 , further comprising an amount of less than or equal to about 0.10 wt % of molybdenum (Mo).3. The gray cast iron according to claim 1 , wherein the gray cast ...

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Номер записи: 90
15-07-2021 дата публикации

Method and apparatus for the production of cast iron, cast iron produced according to said method

Номер: US20210214812A1
Автор: GIAVANI Cesare, MEMOLI Francesco, Reali Silvio Maria, Shoop Kyle James
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A method for the production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace includes the steps of preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of the carbon is combined with the iron to form iron carbide FeC; charging the charge of pre-reduced iron ore into the electric arc furnace; and melting the DRI charge to form liquid cast iron having at least 80% by weight of actual carbon content deriving from the carbon in the charge of pre-reduced iron ore, the melting step being in a reducing atmosphere and in a melting chamber of the electric arc furnace subjected to a positive internal pressure generated by the gases produced by reduction reactions that develop during melting. 1. A method for production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace (EAF) , comprising the following steps:{'sub': '3', 'a. preparing a charge of the pre-reduced iron ore (DRI) having a metallization higher than 90% and containing up to 6.5% by weight of carbon, wherein at least 80% of said carbon is combined with iron to form iron carbide (FeC);'}b. charging the charge of the pre-reduced iron ore (DRI) into the electric arc furnace (EAF) without adding free carbon; andc. melting the DRI charge to form liquid cast iron,wherein said liquid cast iron has a predetermined actual content of carbon, at least 80% by weight of said actual carbon content of the liquid cast iron deriving from the carbon in the charge of the pre-reduced iron ore (DRI), andwherein step c. is carried out in a reducing atmosphere and in a melting chamber of the electric arc furnace (EAF) subjected to a positive internal pressure generated by gases produced by reduction reactions that develop in step c.2. The method according to claim 1 , wherein at least 90% of said carbon in the charge of the pre-reduced iron ore (DRI) is combined with iron as ...

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Номер записи: 91
20-06-2019 дата публикации

Erosion And Corrosion Resistant White Cast Irons

Номер: US20190185975A1
Автор: Dolman Kevin Francis, Lucey Timothy Justin
Принадлежит:

A casting of a hypereutectic white iron that, in an as-cast form of the casting, has a microstructure that includes a ferrous matrix that contains 12-20 wt. % chromium in solution in the matrix, eutectic chromium carbides dispersed in the matrix, primary chromium carbides dispersed in the matrix, and optionally secondary carbides dispersed in the matrix. The eutectic carbides are 15-25 vol. % of the casting and the primary carbides are 25-35 vol. % of the casting. When present, the secondary carbides are up to 6 vol. % of the casting. 1. A casting of a hypereutectic white iron that , in an as-cast form of the casting , has a microstructure that includes a ferrous matrix that contains 12-20 wt. % chromium in solution in the matrix , eutectic chromium carbides dispersed in the matrix , primary chromium carbides dispersed in the matrix , and optionally secondary carbides dispersed in the matrix , where the eutectic carbides are 15-25 vol. % of the casting , the primary carbides are 25-35 vol. % of the casting , and when present the secondary carbides are up to 6 vol. % of the casting.2. The casting defined in wherein the weight ratio of chromium and carbon is greater than 7:1 and less than 9.25:1.3. The casting defined in wherein the eutectic carbides claim 1 , the primary carbides claim 1 , and the secondary carbides are MCcarbides (where “M” comprises Cr claim 1 , Fe claim 1 , and Mn).4. The casting defined in wherein the eutectic (Cr claim 3 ,Fe claim 3 ,Mn)Ccarbides and the primary (Cr claim 3 ,Fe claim 3 ,Mn)Ccarbides each comprise: Cr: 50-70 wt. % claim 3 , C: 8.5-8.9 wt. % claim 3 , and Mn: 0.5-5.0 wt. %.5. (canceled)6. The casting defined wherein the ferrous matrix comprises: Cr: 12-20 wt. % claim 1 , C: 0.2-1.5 wt. % claim 1 , and Mn: 1.0-5.0 wt. %7. The casting defined in wherein the ferrous matrix comprises: Cr: 14-16 wt. % claim 1 , C: 0.3-1.2 wt. % claim 1 , and Mn: 1.0-5.0 wt. %.8. The casting defined in wherein the ferrous matrix comprises 13-17 wt. % Cr ...

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Номер записи: 92
11-06-2020 дата публикации

METHOD OF MANUFACTURING CAM PIECE FOR CONTINUOUSLY VARIABLE VALVE DURATION AND CAM PIECE MANUFACTURED THEREFROM

Номер: US20200181726A1
Автор: PARK Sung-Hwan
Принадлежит:

A method of manufacturing a cam piece for a continuously variable valve duration and a cam piece manufactured therefrom, and more particularly, to material and heat treatment conditions of a cam piece, may include manufacturing a cam piece by casting; heating the cam piece; maintaining a heating temperature; and salt-bathing the cam piece, in which the cam piece includes 3.2 to 4.2 wt % of carbon (C), 2.2 to 3.4 wt % of silicon (Si), and the balance iron (Fe), and may have a carbon equivalent value of 4.4 to 4.6. 1. A method of manufacturing a cam piece for a continuously variable valve duration , the method comprising:manufacturing the cam piece by casting;heating the cam piece;maintaining a heating temperature; andsalt-bathing the cam piece,wherein the cam piece comprises 3.2 to 4.2 wt % of carbon (C), 2.2 to 3.4 wt % of silicon (Si), and balance iron (Fe), and has a carbon equivalent value of 4.4 to 4.6.2. The method of claim 1 , wherein the cam piece further comprises nickel (Ni) claim 1 , copper (Cu) and molybdenum (Mo) and a total content of nickel (Ni) claim 1 , copper (Cu) and molybdenum (Mo) is 1.9 to 2.1 wt %.3. The method of claim 2 , wherein a content of nickel (Ni) is 1.0 wt % or less.4. The method of claim 2 , wherein a content of copper (Cu) is 0.5 to 1.0 wt %.5. The method of claim 2 , wherein a content of molybdenum (Mo) is 0.5 to 1.0 wt %.6. The method of claim 2 , wherein the cam piece further comprises 0.3 wt % or less of chromium (Cr).7. The method of claim 1 , wherein in the maintaining of the heating temperature claim 1 , the heating temperature is 890 to 930° C. claim 1 , and a heating holding time is 70 to 110 minutes.8. The method of claim 1 , wherein in the salt-bathing of the cam piece claim 1 , a salt bath temperature is 270 to 290° C. claim 1 , and a salt bath holding time is 50 to 70 minutes.9. A cam piece for a continuously variable valve duration claim 1 , comprising 3.2 to 4.2 wt % of carbon (C) claim 1 , 2.2 to 3.4 wt % of silicon ...

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Номер записи: 93
14-07-2016 дата публикации

Chromium metal powder

Номер: US20160199910A1
Автор: Lorenz Sigl, Michael O&#39;sullivan
Принадлежит: Plansee Se

A metal powder has a chromium content of at least 90 Ma %, a nanohardness according to EN ISO 14577-1 of ≦4 GPa and/or a green strength measured according to ASTM B312-09 of at least 7 MPa at a compression pressure of 550 MPa.

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Номер записи: 94
14-07-2016 дата публикации

MOLTEN ALUMINUM RESISTANT ALLOYS

Номер: US20160201170A1
Автор: Cheney Justin Lee, Vecchio James, Vecchio Kenneth
Принадлежит:

Embodiments of methods for protection a material from a reaction from molten aluminum. In some embodiments, a coating can be applied over a substrate which has significantly less of a reaction rate with molten aluminum, thus preventing damage or chemical changes to the substrate. The coating alloy can be formed from cast iron in combination with niobium in some embodiments. 1. A method of protecting a component from molten aluminum reaction , the method comprising:coating a component formed from a base material with an alloy;wherein the alloy has a reaction level to molten aluminum of less than 38 atomic %, the reaction level being calculated by determining a minimum alloy content in a pseudo binary alloy/aluminum phase diagram where the liquidus temperature is at or above 1500K; andwherein the alloy has a minimum concentration of highly resistant secondary phases of 5 mole %.2. The method of claim 1 , wherein the alloy is a Nb—Zr alloy with 30-60 wt. % Zr.3. The method of claim 1 , wherein the alloy has a reaction rate to molten aluminum less than 50% than that of the base material.4. The method of claim 1 , wherein the alloy is a pseudo alloy of grey cast iron and niobium according to the formula: (grey cast iron)Nbwith x ranging from 10 to 30 wt. %.5. The method of claim 1 , wherein the alloy is a pseudo alloy of grey cast iron and niobium according to the formula: (grey cast iron)Nbwith x ranging from 0 to 10 wt. %.6. The method of claim 1 , wherein the alloy has a reaction rate less than 10% than that of the base material.7. The method of claim 1 , wherein the alloy has a reaction rate less than 5% than that of the base material.8. An alloy resistant to molten aluminum claim 1 , the alloy comprising:two or more elements;a reaction level of less than 38 atom %, wherein the reaction level is calculated by determining a minimum alloy content in a pseudo binary alloy/aluminum phase diagram where the liquidus temperature is at or above 1500K; anda minimum ...

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Номер записи: 95
25-09-2014 дата публикации

HIGH STRENGTH FLAKE GRAPHITE CAST IRON HAVING EXCELLENT WORKABILITY AND PREPARATION METHOD THEREOF

Номер: US20140286819A1
Автор: CHUNG Jong Kwon, Hwang Jae Hyoung, JUNG Ki Hwan, Yang Sik
Принадлежит: DOOSAN INFRACORE CO., LTD.

The present disclosure relates to flake graphite cast iron having high workability and a preparation method thereof, and more particularly, to flake graphite cast iron with a uniform graphite shape, low chill formability, a high strength such as a tensile strength of 350 MPa or more, and excellent workability and fluidity by controlling each of the contents of manganese (Mn) and sulfur (S) and carbon (C) and silicon (Si) included in the cast iron and a carbon equivalent (CE) to predetermined ratios, and a preparation method thereof. 1. A flake graphite cast iron for use with an engine comprising:3.05 to 3.25% of carbon (C), 2.1 to 2.4% of silicon (Si), 0.6 to 3.4% of manganese (Mn), 0.09 to 0.13% of sulfur (S), 0.04% or less of phosphorus (P), 0.6 to 0.8% of copper (Cu), 0.2 to 0.4% of molybdenum (Mo) and the balance iron (Fe) satisfying 100% as a total weight %, andsimultaneously satisfying a chemical composition wherein a ratio (Mn/S) of the content of manganese (Mn) to the content of sulfur (S) is in a range from 7 to 28,a ratio ((Mn/S)/(C/Si)) of the content ratio of manganese and sulfur to the content ratio of carbon and silicon is in a range from 5 to 18, anda carbon equivalent (CE) is in a range from 3.8 to 4.0.2. The flake graphite cast iron of claim 1 , wherein a tensile strength is 350 MPa or more.3. The flake graphite cast iron of claim 1 , wherein a processing length is 6 m or more when a VBmax is 0.45 during an evaluation of workability of a workability test specimen.4. The flake graphite cast iron of claim 1 , wherein a wedge test specimen has a chill depth of 3 mm or less.5. A method for preparing flake graphite cast iron for use with an engine claim 1 , the method comprising:(i) preparing a cast iron melt comprising 3.05 to 3.25% of carbon (C), 2.1 to 2.4% of silicon (Si), 0.6 to 3.4% of manganese (Mn), 0.09 to 0.13% of sulfur (S), 0.04% or less of phosphorus (P), 0.6 to 0.8% of copper (Cu), 0.2 to 0.4% of molybdenum (Mo) and the balance iron (Fe) ...

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Номер записи: 96
25-09-2014 дата публикации

Roll surface layer material for hot rolling with excellent fatigue resistance produced by centrifugal casting, and composite roll for hot rolling produced through centrifugal casting

Номер: US20140287898A1
Автор: Hiromitsu Sibata, Kenji Ichino, Tetsuo Mochida
Принадлежит: JFE Steel Corp

There is provided a roll surface layer material including a roll surface layer with excellent fatigue resistance. The roll surface layer material has a composition including, on a mass % basis, C: 2.3% to 2.9%, Si: 0.2% to 0.8%, Mn: 0.2% to 1.0%, Cr: 5.0% to 7.5%, Mo: 4.4% to 6.5%, V: 5.3% to 7.0%, Nb: 0.6% to 1.5%, and Co: 0.1% to 4.0% so as to satisfy 14.0≦(Mo+1.7V)≦17.0 (where Mo represents a content (mass %) of Mo and V represents a content (mass %) of V) and further including Al: 0.001% to 0.03% and/or REM: 0.001% to 0.03%, wherein a carbide is contained at an area fraction of 13% to 40%. A composite roll obtained by integrally welding a shaft member to the roll surface layer member is treated as a centrifugal cast roll that includes a surface layer with excellent fatigue resistance.

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Номер записи: 97
02-10-2014 дата публикации

CAST IRON ALLOY AND EXHAUST COMPONENT MANUFACTURED THEREBY

Номер: US20140290230A1
Автор: Ekstrom Madeleine, MORE John, Wilberfors Fredrik
Принадлежит: SCANIA CV AB

The invention relates to a cast-iron alloy comprising (in wt %) C: 3.0-3.5 Si: 4.1-4.8 Mn: ≦0.4 Mg: 0.02-0.08 Cr: 0.4-1.0 Cu: ≦0.15 Mo: 0.8-1.2 P: <0.05 S: <0.015 the remainder comprising Fe and any impurities. The invention relates also to an exhaust-conducting component for truck engines which comprises the alloy according to the invention. 2. The cast-iron alloy according to claim 1 , which in solidified state has a structure of spheroidal graphite nodules in a mainly ferritic matrix.3. The cast-iron alloy according to claim 1 , wherein the C content is 3.0-3.3 wt %.4. The cast-iron alloy according to claim 1 , wherein the Si content is 4.2-4.4 wt %.5. The cast-iron alloy according to claim 1 , wherein the Cr content is 0.5-1.0 wt %.6. The cast-iron alloy according to claim 1 , wherein the Cr content is 0.6-1.0 wt %.7. The cast-iron alloy according to claim 1 , wherein the Cr content is 0.60-0.75 wt %.8. The cast-iron alloy according to claim 1 , wherein the Mo content is 0.8-1.0 wt %.9. An exhaust-conducting component for truck engines claim 1 , comprising a cast-iron alloy according to .10. An exhaust-conducting component for truck engines according to claim 9 , wherein the exhaust-conducting component is in the form of a turbo manifold claim 9 , an exhaust manifold or a turbine housing for a turbo. The present invention relates to a cast-iron alloy according to the preamble of claim . The invention relates also to an exhaust-conducting component intended for a truck engine and comprising the cast-iron alloy according to the invention.Components used in truck engines to conduct exhaust gases away from the cylinders are subject cyclically to substantial thermal and mechanical loads during operation of the engine. Examples of such components comprise turbo manifolds, exhaust manifolds and turbine housings for turbos. The components are also subject to corrosion in the oxidising environment caused by the hot exhaust gases ejected from the cylinders. The corrosion ...

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Номер записи: 98
27-06-2019 дата публикации

Self-Lubricating Rolling Bearing and Preparation Method Therefor

Номер: US20190194771A1
Автор: Baojian Liu, Guojun Yan, Yang Xu
Принадлежит: Xian University of Technology

A self-lubricating rolling bearing is provided. The chemical compositions in the inner rings and the outer rings of bearing are 3.4-3.7% C, 2.7-2.9% Si, 0.3-0.5% Mn, 0.3-0.5% Cr, ≤0.05% S, ≤0.05% P, 0.03-0.045% Residual Mg, and the remainder Fe. The total percent of the chemical compositions is 100%. The material for the inner and outer rings of the rolling bearing introduced in the invention is austempered ductile iron (ADI). In the microstructure of ADI, the diameter of the graphite nodules is less than 0.02 mm, the number of graphite spheres per square millimeter is more than 400, and the microstructure of the metal matrix in the ADI can be showed clearly only when it is observed on the microscope with a magnification more than 500. Eventually, the self-lubricating rolling bearings are made from the ADI.

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Номер записи: 99
06-08-2015 дата публикации

Method for obtaining a foundry body from a granular mixture comprising a modified polycondensed resin and a formaldehyde scavenger

Номер: US20150217365A1
Автор: Manuel Vargas, Stephane Sarrazin, Tung-Fai Lo
Принадлежит: Huttenes-Albertus France Sarl

The invention relates to a method for manufacturing a foundry body including the preparation of a granular mixture including a polycondensed resin having modified formaldehyde, optionally incorporating an aromatic or polyaromatic during the synthesis thereof, a hardening agent, a formaldehyde sensor compound, water and optionally at least one resin selected from the group comprising tannins, natural polyphenols, and lignins, placing said granular mixture in contact with the surface of a forming tool, and insufflating a flow of gas at 50° C. to 380° C. into the granular mixture for 1 to 300 seconds, in order to ensure at least partial hardening of said mixture. The invention also relates to a method for manufacturing a moulded foundry piece made of metal or a metal alloy, which includes pouring metal into at least one body (mould and/or core) thus produced; and to a foundry piece thus manufactured.

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Номер записи: 100