Load-bearing detection cable for ultra-deep well drilling

The invention relates to the technical field of oil and gas well logging, in particular to a load-bearing detection cable for ultra-deep well drilling, the length of the load-bearing detection cable is larger than a preset value, and the load-bearing detection cable comprises a cable core; the insulating layer coats the outer surface of the cable core; the first electromagnetic shielding layer coats the outer surface of the insulating layer; wherein the first electromagnetic shielding layer comprises a first electromagnetic shielding material film layer, a non-electromagnetic shielding material film layer and a second electromagnetic shielding material film layer which are stacked in sequence; the thickness of the first electromagnetic shielding material film layer and the thickness of the second electromagnetic shielding material film layer are 50-100 microns, and the thickness of the non-electromagnetic shielding material film layer is 1-5 mm. And the armor layer coats the outer surface ...

Oil-immersed power capacitor cover plate assembly

The invention relates to an oil-immersed power capacitor cover plate assembly which comprises a cover plate and an insulating terminal fixed to the cover plate. The insulating terminal comprises an upper terminal body, a lower terminal body, a sealing sleeve, a conductive bolt and a locking nut. Seal rings are arranged between the head portion of the conductive bolt and the lower end face of the lower terminal body, between the upper end face of the lower terminal body and the cover plate and between the lower end face of the upper terminal body and the cover plate for end face sealing. Circumferential sealing is conducted between the upper terminal body and a shaft part of the conductive bolt. Multiple seals are set through the multiple end faces and the circumferential faces, and therefore the sealing performance is quite good, and the oil leakage of a capacitor can be effectively avoided.

LIGHTWEIGHT AND HIGH-STRENGTH CERAMSITE AND PREPARATION METHOD THEREOF

The present invention provides a lightweight and high-strength ceramsite and a preparation method thereof. The ceramsite of the present invention is spherical, and has a diameter of 3 mm to 20 mm, a compressive strength of 1.5 Mpa to 2 Mpa, a volume weight of 350 kg 30 kg/m3 , and X < 0.10 w/m-k. The ceramsite of the present invention is produced from raw materials that include various inorganic solid wastes accounting for more than 95% by a novel environmentally-friendly process according to an optimized formula. During the preparation process, no exhaust gas, waste water and waste residue are discharged. The additive provided in the present invention can ensure the foaming and expansion of the ceramsite during the high-temperature sintering, thereby effectively improving the supporting force of the network framework inside the ceramsite. The obtained ceramsite has pressure resistance, energy conservation and sound insulation superior to an ordinary ceramsite at the same volume-weight ...

Soldering steel plate in high intensity in use for ocean by large line energy, and manufacturing method

High-toughness gas protective welding wire for large-linear energy welding low-alloy steel

The invention relates to a high-toughness gas protective welding wire for large-linear energy welding low-alloy steel. The technical scheme is that the welding wire comprises the following chemical components in percentage by weight: 0.02-0.12 percent by weight of C, 1.00-2.50 percent by weight of Mn, 0.05-0.50 percent by weight of Si, 0.03-0.30 percent by weight of Ti, 0.001-0.004 percent by weight of B, less than or equal to 0.50 percent by weight of Cr, less than or equal to 0.5 percent by weight of Mo, less than or equal to 0.025 percent by weight of S, less than or equal to 0.025 percentby weight of P, 0.03-0.3 percent by weight of two or three kinds of Ca, Mg and Ba and the balance of Fe and inevitable impurities. The high-toughness gas protective welding wire is manufactured by thefollowing steps: carry out steel making on molten iron or scrap steel or the molten iron and the scrap steel by adopting a converter or an electric arc furnace, and then refining and adjusting molteniron ...

La element micro-alloyed AlCrFeNiTi series high-corrosion-resistance wear-resistance block alloy and preparation method and application of La element micro-alloyed AlCrFeNiTi series high-corrosion-resistance wear-resistance block alloy

The invention belongs to the technical field of design and preparation of novel alloy materials, and particularly relates to a La element microalloyed AlCrFeNiTi series high-corrosion-resistance and wear-resistance block alloy and a preparation method and application of the La element microalloyed AlCrFeNiTi series high-corrosion-resistance and wear-resistance block alloy. The alloy comprises the following chemical components in percentage by weight: 2.05 to 2.15 percent of Al, 20.50 to 20.65 percent of Cr, 34.50 to 35.54 percent of Ni, 18.80 to 19.16 percent of Ti, 1.05 to 1.15 percent of La and the balance of Fe and inevitable impurities, and the chemical components need to simultaneously meet the following three relational expressions: (1) Fe/La is more than or equal to 18.57 and less than or equal to 22.00; (2) 6.47 < = Fe/(La + Al) < = 7.45; and (3) 1.05 < = Fe/(La + Ti) < = 1.16. The stainless steel has a uniformly distributed organization structure, high hardness, high wear resistance ...

Segmented multilayer steel wire armored detecting cable for petroleum exploration robot

The invention relates to a segmented multilayer steel wire armored detecting cable for a petroleum exploration robot. The cable comprises seven wires. Each wire is composed of a conductor, an insulating layer and a specific-phase shielding layer. Semi-conductive liner strips are filled in the clearance of the seven cores. A semi-conductive total shielding layer is wound outside the seven wires. An inner armoring steel wire layer and an outer armoring steel wire layer which are arranged in opposite directions are arranged outside the semi-conductive total shielding layer. An inner protecting layer is squeezed outside the outer armoring steel wire layer. An armoring layer is arranged outside the inner protecting layer. An outer protecting layer is squeezed outside the armoring layer. The segmented multilayer steel wire armored detecting cable has functions of realizing simple structure, increasing self weight, obtaining high impact resistance, saving well logging time, reducing labor intensity ...

Titania type gas-shielded flux-cored wire and preparation method thereof

The invention relates to a titania type gas-shielded flux-cored wire and a preparation method thereof. The technical scheme thereof is that the flux-cored wire is prepared from the following chemical ingredients: 18-22wt% of SiO2, 1-5wt% of Al2O3, 35-50wt% of TiO2, 0.5-1.0wt% of CaO, 2-5wt% of Na2O and K2O, 0.2-0.6wt% of C, 12.0-16.0wt% of Mn, 10-20wt% of micron-sized oxide particles, and balance of Fe and inevitable impurities; the ingredients are mixed, coated with low-carbon low-silicon steel band and drawn to prepare the core wire, wherein the oxide particles are Ti2O3 particles, or ZrO2 particles, or the composite particles of Ti2O3 and ZrO2. The invention has the advantages of simple components and low cost; the prepared core wire is capable of obtaining weld metals with impact ductility not less than 120J at 0 DEG C, the data dispersing values of impact tests are in the range of average value (+-)12J, the tensile strength reaches 550-750MPa, and the core wire is applicable to the ...

Microalloy low-cost martensitic stainless steel and manufacturing method thereof

According to the microalloy low-cost martensitic stainless steel and the manufacturing method thereof, based on the fact that laterite-nickel ore is rich in corrosion-resistant elements Ni and Cr, on the basis of laterite-nickel ore smelting molten iron, ultralow-P industrial pure iron and high-carbon ferrochrome are adopted for burdening at the same time, so that chemical components of the microalloy low-cost martensitic stainless steel are designed; the steel comprises the following chemical components in percentage by mass: 0.26-0.29% of C, 0.19-0.49% of Si, 0.19-0.49% of Mn, less than or equal to 0.0015% of S, less than or equal to 0.015% of P, 1.1-1.9% of Ni, 12.1-13.9% of Cr, 0.0050-0.0060% of Ti, more than or equal to 90 * 10 <-4 >% and less than or equal to 130 * 10 <-4 >% of Zr and less than or equal to 130 * 10 <-4 >% of Mg, and the balance of Fe and inevitable impurities, the production cost is reduced, and the local corrosion resistance, especially the seawater corrosion resistance ...

Ultrahigh-strength high-toughness multistep isothermal bainite steel and preparation method thereof

The invention relates to an ultrahigh-strength high-toughness multistep isothermal bainite steel and a preparation method thereof. The technical scheme of the invention is as follows: a hot-rolled steel billet is austenitized 0.2-5.0 hours at a temperature of 850-1100 DEG C firstly, and then the steel billet is subjected to bainite multistep isothermal transformation, so that an ultrahigh-strength high-toughness multistep isothermal bainite steel is obtained. The multistep isothermal transformation is implemented through the following steps: 1, carrying out heat preservation 0.2-3.0 hours in an isothermal medium at a temperature of 250-450 DEG C; 2, carrying out heat preservation 2-50 hours in the isothermal medium at a temperature of 220-350 DEG C; 3, carrying out heat preservation 24-240 hours in the isothermal medium at a temperature of 180-250 DEG C; and 4, carrying out heat preservation 50-360 hours in the isothermal medium at a temperature of 150-220 DEG C, and cooling the obtained ...

HEAT TREATMENT METHOD FOR ACCELERATING PRECIPITATION OF NANOSCALE CARBIDES IN W-CONTAINING ALLOY STEEL

A heat treatment method for accelerating precipitation of nanoscale carbides in a W-containing alloy steel, including: homogenizing a billet at 1100-1200° C. for 24-48 h followed by furnace cooling to room temperature; then austenitizing the billet at 850-1000° C. for 20-40 min followed by quenching in iced brine; heating the billet to 650-750° C. with a rate of 3-7° C./min under a vacuum of 10 −3 -10 −2 Pa and a magnetic field of 10-14 T, isothermalizing the billet for 0.5-2.5 h and cooling the billet to room temperature. The chemical composition of the billet is: 0.06-0.14 wt % C, 1.50-3.00 wt % W, <0.01 wt % P, <0.005 wt % S, Fe and an inevitable impurity. A temperature of the iced brine is −3 to −1° C. The invention has the advantages of simple process, low cost and shortened production period. The W-containing alloy steel treated by the method has improved strength.

Lotus exploration cable is held to seven core high strength

The utility model discloses a lotus exploration cable is held to seven core high strength, including 7 fibre core (1), fibre core (1) all includes the conductor, the outside of conductor has set gradually insulating layer (11) and the semiconductor divides shielding layer (12), fill semi conducting material (2) between fibre core (1), the outside of fibre core (1) has set gradually semiconductor total shielding layer (3), inner steel wire armor (4) and outer layer wire armor (5). The utility model discloses a lotus exploration cable is held to seven core high strength, it is good for this bearing nature of cable that it is showing the advantage, can bear the mechanical load of high strength, anti -interference ability is superior, be applicable to oil, gas field ultradeep well more than 7000 meters well logging, test, perforation, get the lotus exploration cable is held to seven core high strength that core, wax removal, viscosity reduction, pour point depression etc. Bore the mechanical ...

Circulating well robot underground water nuclear magnetic resonance detection liquid analysis load-bearing detection cable

The utility model discloses a liquid analysis load-bearing detection cable for underground water nuclear magnetic resonance detection of a circulating well robot. The cable comprises three cable coresand three stainless steel tubes. Each cable core comprises a conductor, an inner insulating layer located outside the conductor and an outer insulating layer located outside the inner insulating layer. The three stainless steel tubes are respectively a first stainless steel tube, a second stainless steel tube and a third stainless steel tube; the third stainless steel tube and the three cable cores are stranded into a cable; the load-bearing detection cable further comprises an inner protective layer and an outer protective layer. The third stainless steel tube and the three cable cores are all located in the inner protective layer, an inner armor layer is arranged outside the inner protective layer, an outer armor layer is arranged outside the inner armor layer, the first stainless steeltube ...

Portable ready -packaged joint

The utility model relates to a portable ready -packaged joint has mainly solved the threaded connection dangerous stable problem of water injection well test instrument with ground. Main connecting rod (1) on be provided with and hang pin (3) and anticreep pin (4), wherein anticreep pin (4) is rectangular shape button, adapter sleeve (2) on be provided with " L " shape and hang the interface, " L " shape is hung the interface inner end and is provided with semicircular and hangs 3 gutters of pin, still is provided with the anti chatter spring in adapter sleeve (2). Have simple structure, portable connects stable characteristics.

800 MPa level thick steel plate with high toughness and low yield ratio and its making process

Full -automatic single awl end spiral lifts and drags for sand ware

The utility model relates to a full -automatic the short spiral of single awl lifts and drags for the sand ware. Mainly solved and amassed the problem that sand is difficult to the processing in the pit. Motor power (1) below through installing in long -pending sandpipe (3) in hub connection spiral bit (2), spiral bit (2), still be provided with rectangular hole above long -pending sandpipe (3). Have simple structure, convenient operation, the high characteristics of security.

Device and method for automatically switching power supply of OBD (On-Board Diagnostic) intelligent equipment

The invention relates to an OBD intelligent equipment power supply automatic switching device and method, the switching device comprises a battery and a power management module, the power management module is connected between an OBD interface and OBD hardware equipment, and the battery is connected with the OBD hardware equipment; when the vehicle is in a starting state, the power management module works, the vehicle storage battery can supply power to the OBD hardware equipment through the OBD interface and the power management module, the vehicle storage battery can also charge the battery through the OBD interface, and when the vehicle is in a flameout state, the power management module stops working. The power management module cuts off the power supply of the vehicle storage battery to the OBD hardware equipment, and then the charged battery is used for supplying power to the OBD hardware equipment, so that after the vehicle flames out, the OBD hardware equipment cannot take power ...

Low-carbon high-manganese oriented electrical steel plate, and its manufacturing method

Lotus exploration cable is held in pump sending

The utility model discloses a lotus exploration cable is held in pump sending, including the fibre core, the outside of fibre core has set gradually insulating layer, protective layer, inner steel wire armor and outer layer wire armor, the insulating layer is F46 fluoroplastics layer, the protective layer is F40 fluoroplastics layer. The utility model discloses a lotus exploration cable is held in pump sending, it is good for this bearing the weight of nature of cable that it is showing the advantage, can bear the weight of the mechanical load of high strength, is applicable to oil, the multistage pump sending bridging plug perforation construction operation of gas field high temperature water under high pressure horizontal well.

Circular concrete culvert mounting device

The invention discloses a circular concrete culvert mounting device. The device comprises a downstream end, an upstream end, a steel wire rope and a tensioner, wherein the downstream end is an L-shaped frame formed by fixedly connecting a vertical part with a horizontal part; the upstream end is a rectangular frame provided with transverse rib columns; the tensioner is fixed at the horizontal part, one end of the steel wire rope penetrates through the tensioner, and the other end is fixedly connected with one transverse rib column. The device can be used for mounting circular concrete culverts in place at a time, repeated adjustment is not required, the water stop effect at culvert joints is good, follow-up treatment is not required, the device is very convenient to operate, and the construction efficiency can be greatly improved; the device is simple to machine and low in cost.

Carburizing bainite steel and manufacturing method thereof

The invention relates to carburizing bainite steel and a manufacturing method thereof. The technical proposal is as follows: the casting billet comprises the chemical components with the contents as follows: 0.04-0.12wt% of C, 1.20-1.80wt% of Si, 1.60-2.20wt% of Mn, 1.00-1.60wt% of Cr, 0.10-0.60wt% of Mo, 0.05-1.20wt% of Al, P less than 0.015wt%, S less than 0.010wt% and the balance Fe and inevitable impurities. The method is characterized by carrying out hot rolling and cooling after steel making and refining; austenitizing the cooled steel plates at the temperature of 850-1050 DEG C for 0.2-0.6h; then case carburizing the steel plates at the temperature of 700-900 DEG C in the nitrogen methanol atmosphere for 60.0-100.0h; insulating the steel plates at the temperature of 200-500 DEG C in the nitrogen atmosphere for 10.0-240.0h or insulating the steel plates at the temperature of 200-500 DEG C in the nitrogen atmosphere and in the strong magnetic field of 8-12T for 1.0-4.0h and furnace-cooling ...

Soldering not quenching and tempering steel plate in high intensity by large line energy, and manufacturing method

Soldering low alloy steel plate in high intensity by large line energy, and manufacturing method

This invention relates to a method for producing low-alloy high-strength steel suitable for high heat input welding. The chemical compositions of the steel are: C 0.01-0.18 wt.%, Si 0.05-0.6 wt.%, Mn 1.5-2.5 wt.%, Ni 0.1-1.5 wt.%, Cu 0.1-1.5 wt.%, Als 0.001-0.06 wt.%, Nb 0.01-0.08 wt.%, Ti 0.01-0.08 wt.%, one or more of Ca, Mg and Zr 0.0001-0.030 wt.%, N 0.002-0.012 wt.%, B 0.0001-0.003 wt.%, P less than 0.015 wt.%, S less than 0.010 wt.%, Fe and impurities. The method comprises: performing deoxidation with Fe-Ti alloy or metal Ti after steelmaking, adding one or more of Ca, Mg and Zr, performing final deoxidation with Al wire, adding B, heating to 1100-1320 deg.C, continuously casting, homogenizing, rolling, relaxing, and cooling online. The obtained steel has such advantages as simple process, high heat input welding, and high tensile strength.

Production method of medium-low carbon high-strength steel homogenized casting blank

The invention relates to a production method of a medium-low carbon high-strength steel homogenized casting blank. The invention adopts the technical scheme as follows: the production method comprises the following step: feeding a cold steel belt into medium-low carbon high-strength molten steel inside a continuous casting machine crystallizer or an ingot mold, wherein the cold steel belt accounts for 0.3-1.0% of the medium-low carbon high-strength molten steel by weight; the cold steel belt feeding speed Vband is equal to A*Vcasting*(Ttundish-Tliqudus)/Tliquidus; the vibration frequency of a belt feeder is 50-35000 Hz; the cold steel belt comprises 0.2-0.65% of C or 1-3% of silicon by weight; the melting point of the cold steel belt is 3-30 DEG C lower than that of the cast casting blank; the surface of the cold steel belt is coated with anti-rusting oil; the thickness of the cold steel belt is 1-6 mm. The production method disclosed by the invention is simple in process, low in cost and ...

Online process for improving impact toughness of welding heat affected zone

The invention relates to an online process for improving the impact toughness of a welding heat affected zone. The online process adopts the technical scheme that the compressed gas is directly blown at the position of a welding joint which is 20-1200 mm away from a welding electric arc in the welding process of a steel product; the blowing time is 2-120 s; and the distance between the position of the blown welding joint and the welding electric arc is kept unchanged and synchronously moves forwards along with the welding electric arc. The compressed gas is air, the pressure of the compressedgas is 0.5-3.0 MPa; the flow rate of the compressed gas is 5-30 L/min; the steel product is one of low carbon steel, medium carbon steel, low alloy steel, medium alloy steel and high alloy steel; andthe welding joint is one of welding points formed by welding methods of electric arc welding, submerged-arc welding, gas shielded welding and argon tungsten-arc welding. The online process has the characteristics ...

Thin slab process high magnetic induction oriented electrical steel sheet and its manufacturing method

Ultrahigh-strength high-plasticity copper-containing austenitic stainless steel and production method

The invention relates to copper-containing austenitic stainless steel with ultrahigh yield strength and high plasticity. The copper-containing austenitic stainless steel comprises the following chemical components in percentage by weight: 0.025 to 0.031 percent of C, 0.33 to 0.76 percent of Si, 7.32 to 13.8 percent of Mn, 17.3 to 19.1 percent of Cr, 0.72 to 2.9 percent of Ni, 0.14 to 0.35 percent of N, 1.72 to 3.51 percent of Cu and the balance of Fe. The production method comprises the following steps: carrying out hot rolling on a casting blank which is smelted and poured into a blank; carrying out solution treatment; performing low-temperature cold rolling to the product thickness; annealing is conducted; and naturally cooling to room temperature. By adding the element copper and combining low-temperature rolling with low-temperature long-time annealing treatment, the yield strength of the steel is 1064-1551 MPa, the tensile strength of the steel is 1170-1675 MPa, and the ductility of ...

Nb element microalloyed high-temperature-resistant and wear-resistant block multi-component alloy as well as preparation method and application thereof

The invention belongs to the technical field of design and preparation of novel alloy materials, and particularly relates to an Nb element microalloyed high-temperature-resistant and wear-resistant block multi-component alloy and a preparation method and application of the Nb element microalloyed high-temperature-resistant and wear-resistant block multi-component alloy. The multi-component alloy comprises the following chemical components in percentage by weight: 2.10 to 2.24 weight percent of Al, 20.70 to 20.86 weight percent of Cr, 35.20 to 35.54 weight percent of Ni, 19.10 to 19.46 weight percent of Ti, 0.70 to 0.85 weight percent of Nb and the balance of Fe and inevitable impurities, and the chemical components need to simultaneously meet the following three relational expressions: (1) Fe/Nb is more than or equal to 24.76 and less than or equal to 31.72; (2) 6.81 < = Fe/(Nb + Al) < = 7.93; and (3) 1.04 < = Fe/(Nb + Ti) < = 1.13. The wear-resistant material has a uniformly distributed ...

Ultra-high strength high-ductility steel and manufacturing method thereof

The invention relates to ultra-high strength high-ductility steel and a manufacturing method thereof. The technical proposal is as follows: the casting billet comprises the chemical components with the contents as follows: 0.30-0.70wt% of C, 1.20-1.80wt% of Si, 2.00-6.00wt% of Mn, 1.00-5.00wt% of Cr, 0.10-0.60wt% of Mo, 0.06-0.12wt% of V, 0.05-1.20wt% of Al, P less than 0.015wt%, S less than 0.010wt% and the balance Fe and inevitable impurities. The method is characterized by carrying out die casting or continuous casting after steel making and refining; soaking the casting billet at the temperature of 1150-1250 DEG C for 2.0-3.0h, hot rolling and naturally cooling the casting billet; austenitizing the cooled steel plates at the temperature of 850-1050 DEG C for 0.2-0.6h; then insulating the steel plates at the temperature of 200-500 DEG C in the nitrogen atmosphere for 10.0-240.0h, or insulating the steel plates at the temperature of 200-500 DEG C in the nitrogen atmosphere and in the ...

Soldering steel plate in high intensity in use for ocean by large line energy, and manufacturing method

This invention relates to a method for producing steel plate used in marine engineering suitable for high heat input welding. The chemical compositions of the plate slab are: C 0.01-0.25 wt.%, Si 0.05-0.5 wt.%, Mn 0.5-1.8 wt.%, Ni 0.1-1.5 wt.%, Cu 0.1-1.5 wt.%, Als 0.001-0.06 wt.%, Nb 0.01-0.08 wt.%, Ti 0.01-0.08 wt.%, N 0.002-0.012 wt.%, B 0.0001-0.003 wt.%, P less than 0.010 wt.%, S less than 0.005 wt.%, Fe and impurities. The method comprises: performing deoxidation with Fe-Ti alloy or metal Ti after steelmaking, performing final deoxidation with Al wire, adding B, continuously casting, homogenizing, rolling, relaxing, and cooling online. The obtained steel plate has such advantages as low welding construction intensity, high production efficiency, and saved resources and energy, and us suitable for producing ocean platforms and ships.

Method for producing medium-high-carbon high-strength steel based on sheet bar technology

The invention relates to a production method of high-carbon and high-strength steel based on a thin slab process. The method adopts the technical proposal that: the steel is made by steelmaking, refining process, slab continuous casting, heating, soaking, hot continuous rolling, cooling and coiling. Wherein: the thickness of a thin slab ranges from 50 to 90mm, a continuous casting billet has a drawing speed of 2.5 to 6.0m/min, a heating furnace has a temperature of between 900 and 1100DEG C, a soaking pit has a temperature of between 1000 and 1250DEG C, the initial rolling temperature is between 1000 and 1200DEG C, the finishing temperature is between 650 and 950DEG C, the coiling temperature is between 450 and 850DEG C, and the thickness of a steel plate ranges from 1 too 12mm. The high-carbon and high-strength steel comprises the chemical constituents: 0.25 to 1.25 wt percent of carbon content, 0.001 to 0.1wt percent of Al, 0.0010 to 0.0050 wt percent of Ca, balance Fe, unavoidable impurities ...

Composite additive for smelting high heat input welding low-alloy steel and using method thereof

The invention relates to a composite additive for smelting high heat input welding low-alloy steel and a using method thereof. The composite additive comprises the following chemical ingredients in percentage by weight: 40 to 75 percent of Si, 5 to 15 percent of Ca, 10 to 25 percent of Ti, 5 to 25 percent of Zr, and the balance of Fe and inevitable impurities. A method for preparing the additive comprises the following steps: respectively adding Ti and Zr based on Si-Ca alloy according to the weight percentage of the chemical ingredients; and smelting and casting the mixture in a vacuum induction furnace, thus obtaining the additive. The method for using the prepared composite additive comprises the following steps: maintaining the free oxygen content in molten steel to be between 10 and 200ppm before the composite additive is added; using the composite additive for carrying out deoxygenation and composite alloying on the molten steel, wherein the dosage of the composite additive is 0.5 ...

B-element microalloyed high-wear-resistance block high-entropy alloy and preparation method and application of B-element microalloyed high-wear-resistance block high-entropy alloy

The invention belongs to the technical field of novel alloy material design and preparation thereof, and particularly relates to a B-element microalloyed high-wear-resistance block high-entropy alloy and a preparation method and application of the B-element microalloyed high-wear-resistance block high-entropy alloy. The high-entropy alloy comprises the following chemical components in percentage by mass: 10.70 to 10.82 weight percent of Al, 20.80 to 20.94 weight percent of Cr, 35.40 to 35.56 weight percent of Ni, 19.20 to 19.33 weight percent of Ti, 0.10 to 0.25 weight percent of B and the balance of Fe and inevitable impurities, and the chemical components need to simultaneously meet the following three relational expressions: (1) 52lt; fe/Blt; 138); (2) 1.2 lt; fe/(B + Al) lt; 1.3, 2, 3; (3) 0.7 lt; fe/(B + Ti) lt; and 1.3. Compared with a traditional wear-resistant material NM500, the wear-resistant material has the advantages that the wear resistance is improved by 3-5 times under the ...

Nano-structured ultrahigh-strength dual-phase steel and production method thereof

The invention relates to nano-structured ultrahigh-strength dual-phase steel and a production method thereof. The production method comprises the following steps: austenitizing steel billet at 850-1,050 DEG C for 0.2-0.6 hour; water-bath quenching at 0-100 DEG C, and holding the temperature for 1.0-10.0 minutes; performing carbon distribution and tempering at 300-600 DEG C for 0.01-1.0 hour; and fnally quenching with water to room temperature. The medium for carbon distribution and tempering is one of salt bath, inert gas atmosphere and weak reducing atmosphere. The steel billet comprises the following chemical components in percentage by weight: C 0.71-1.00, Si 1.00-2.00, Mn 1.00-2.00, Cr 1.00-1.60, Mo 0.05-1.00, Al 0.05-1.00, Nb 0.00-0.2, Ti 0.00-0.2%, V 0.00-0.2%, P less than 0.015%, S less than 0.010%, and Fe and unavoidable impurities as balance, wherein the sum of the contents of Si, Mn, Cr, Mo and Al is less than or equal to 6.00%, and the sum of the contents of Nb, Ti and V is less ...

Ultra-high strength bainite armour steel and manufacturing method thereof

The invention relates to ultra-high strength bainite armour steel and a manufacturing method thereof. The technical proposal is as follows: the casting billet comprises the following chemical components: 0.70-1.10wt% of C, 1.20-1.80wt% of Si, 1.60-2.20wt% of Mn, 1.00-1.60wt% of Cr, 0.10-0.60wt% of Mo, 0.05-1.20wt% of Al, 0.05-0.50wt% of Co, P less than 0.015wt%, S less than 0.010wt% and the balance Fe and inevitable impurities. The method is characterized by carrying out die casting or continuous casting after steel making and refining; soaking the casting billet at the temperature of 1150-1250 DEG C for 2.0-3.0h, hot rolling and cooling the casting billet; austenitizing the casting billet at the temperature of 850-1050 DEG C for 0.2-0.6h; then insulating the casting billet at the temperature of 200-500 DEG C in the nitrogen atmosphere for 10.0-240.0h, or insulating the casting billet at the temperature of 200-500 DEG C in the nitrogen atmosphere and in the strong magnetic field of 8-12T ...

Submerged arc welding wire for superstrength pipeline steel and production method thereof

The invention relates to a submerged arc welding wire for superstrength pipeline steel and a production method thereof. The technical scheme is that: the submerged arc welding wire comprises the following components in percentage by weight: 0.04 to 0.06 percent of C, 1.40 to 2.00 percent of Mn, 0.70 to 1.10 percent of Mo, 2.00 to 2.60 percent of Ni, 0.80 to 1.20 percent of Cr, 0.10 to 0.30 percent of Cu, less than or equal to 0.0005 percent of B, less than or equal to 0.01 percent of S, less than or equal to 0.01 percent of P and the balance of Fe and inevitable impurities. The production method comprises the following steps of: adding 0.01 to 0.5 weight percent of composite additive when the components are smelted, forming a square billet in a pouring way, hot-rolling the square billet to form a steel wire rod with the diameter of Phi 5.5 to Phi 7.5mm, removing oxide skin from a surface, drawing the steel wire rod to form the welding wire with the diameter of Phi 3.2 to Phi 4.0mm and performing ...

Steel with high fatigue ultimate strength and homogenization manufacturing method thereof

The invention relates to the technical field of preparation of fatigue-resistant structural steel, in particular to high fatigue ultimate strength steel and a homogenization manufacturing method thereof. The high-fatigue-limit steel is obtained through the processes of smelting, deoxidizing, alloying, refining and continuous casting of raw materials and the processes of normalizing and tempering after rolling of the raw materials. The high-fatigue-limit steel comprises the following chemical components in percentage by mass: 0.03%-0.08% of C, 0.05%-0.20% of Si, 0.60%-1.00% of Mn and Plt. 0.010%, Slt; the alloy comprises the following components in percentage by weight: 0.003% of Fe, 0.010%-0.030% of Nb, 3.0%-3.5% of Ni, less than or equal to 0.006% of Alt, 0.008%-0.015% of Ti, 0.001%-0.005% of Mg and the balance of Fe and inevitable impurities. The method ensures that the obtained steel has high fatigue ultimate strength and low fatigue ductile-brittle transition temperature.

High-wear-resistance medium-manganese high-aluminum steel and heat treatment method and application thereof

The invention belongs to the technical field of composite materials, and particularly relates to high-wear-resistance medium-manganese high-aluminum steel and a heat treatment method and application thereof. The high-wear-resistance medium-manganese high-aluminum steel is prepared from the following chemical components in percentage by weight: 0.4 to 0.5 weight percent of C, 0.01 to 0.05 weight percent of Si, 9.5 to 10.5 weight percent of Mn, 2.1 to 3.9 weight percent of Al, 0.2 to 0.3 weight percent of V + Mo, 0.05 to 0.15 weight percent of Nb and the balance of Fe and inevitable impurities, and the requirements of 4lt are met at the same time; mn/Allt; 6, 1lt; mo/Vlt; 3, 1lt; (V + Mo)/Sult; 6. The heat treatment method comprises the following steps: firstly carrying out water toughening treatment on a high-wear-resistance medium-manganese high-aluminum steel ingot, and then carrying out aging treatment to obtain the high-wear-resistance medium-manganese high-aluminum steel. The limitation ...

Air cooling device of quick cooling welding joint and use method thereof

The invention relates to an air cooling device of a quick cooling welding joint and a use method thereof. The invention adopts the technical scheme that a gas flow control box (2) of the device is internally provided with a main air pipe and 2-6 branch air pipes, one end of the main air pipe is connected with one end of each branch air pipe, and the main air pipe and the branch air pipes are respectively provided with a control valve (1); the other end of the main air pipe is externally connected with a high-pressure air source (14) by a gas pipe (15), and the other ends of the 2-6 branch airpipes are respectively and correspondingly connected with 2-6 gas ejector pipes (12) in an air outlet sleeve (13) by each gas hose (3); the upper end and the lower end of each gas ejector pipe (12) respectively penetrates through a top plate and a bottom plate of the air outlet sleeve (13); and a third screw bolt (10) penetrates through a shell at two sides of the air outlet sleeve (13) to be connected ...

Carburizing bainite steel and manufacturing method thereof

The invention relates to carburizing bainite steel and a manufacturing method thereof. The technical proposal is as follows: the casting billet comprises the chemical components with the contents as follows: 0.04-0.12wt% of C, 1.20-1.80wt% of Si, 1.60-2.20wt% of Mn, 1.00-1.60wt% of Cr, 0.10-0.60wt% of Mo, 0.05-1.20wt% of Al, P less than 0.015wt%, S less than 0.010wt% and the balance Fe and inevitable impurities. The method is characterized by carrying out hot rolling and cooling after steel making and refining; austenitizing the cooled steel plates at the temperature of 850-1050 DEG C for 0.2-0.6h; then case carburizing the steel plates at the temperature of 700-900 DEG C in the nitrogen methanol atmosphere for 60.0-100.0h; insulating the steel plates at the temperature of 200-500 DEG C in the nitrogen atmosphere for 10.0-240.0h or insulating the steel plates at the temperature of 200-500 DEG C in the nitrogen atmosphere and in the strong magnetic field of 8-12T for 1.0-4.0h and furnace-cooling ...

Test equipment for carrying out aeroelastic stability test on fan blade

The invention provides test equipment for carrying out aeroelastic stability test on a fan blade, which comprises a wind tunnel device for providing airflow, a forced vibration device, a mounting plate connected to the forced vibration device, and a first driving unit mounted on the mounting plate, the fan blade and the first driving unit are located in a wind tunnel of the wind tunnel device, the fan blade is arranged on the first driving unit, the first driving unit drives the fan blade to move in a horizontal plane, and the fan blade can be driven to move in a first direction, a second direction and a horizontal twisting motion. According to the technical scheme provided by the invention, the multi-degree-of-freedom motion response of the fan blade under the action of sea wind wave flow can be simulated, so that the aeroelastic stability of the fan blade can be accurately tested.

Soldering boat deck steel in high intensity by large line energy, and manufacturing method

This invention relates to a method for producing high-strength ship plate steel suitable for high heat input welding. The chemical compositions of the ship plate steel are: C 0.01-0.18 wt.%, Si 0.05-0.4 wt.%, Mn 1.0-1.8 wt.%, Als 0.001-0.06 wt.%, Nb 0.01-0.08 wt.%, Ti 0.01-0.08 wt.%, N 0.002-0.012 wt.%, B 0.0001-0.0030 wt.%, one or more of Ca, Mg and Zr 0.0001-0.030 wt.%, P less than 0.015 wt.%, S less than 0.010 wt.%, Fe and impurities. The method comprises: keeping the oxygen content in the molten steel at 10-600 ppm, performing deoxidation with Fe-Ti alloy or metal Ti after steelmaking, adding one or more of Ca, Mg and Zr, performing final deoxidation with Al wire, adding B, casting, homogenizing, rolling, relaxing, and cooling online. The obtained ship plate steel has such advantages as simple chemical compositions, simple process, and high heat input welding, and is suitable for producing ships.

Zinc-aluminum-magnesium hot-dip coating process for armored steel wire of load-bearing detection cable

The invention discloses a load-bearing detection cable armored steel wire zinc-aluminum-magnesium hot-dip coating process, belongs to the technical field of cable production, and discloses load-bearing detection cable armored steel wire zinc-aluminum-magnesium hot-dip coating equipment which comprises a heating furnace main body, and a hot-dip coating cabin is arranged at the top of the heating furnace main body; a first leakage-proof cabin and a second leakage-proof cabin are respectively arranged at the top of the heating furnace main body and beside the two sides of the hot-dip cabin, and the inner side of the hot-dip cabin is communicated with the inner side of the heating furnace main body. By arranging the uniform hot-dip coating assembly and the pushing assembly, hot-dip coating pipes with different inner diameters can be replaced according to different diameters of the armored steel wires, so that gaps between the inner diameters of the hot-dip coating pipes and the diameters of ...

Sheet slab process low-carbon high-manganese oriented electrotechnical steel sheet, and its manufacturing method

High-wear-resistance block high-entropy alloy and preparation method and application thereof

The invention belongs to the technical field of novel alloy material design and preparation thereof, and particularly relates to a high-wear-resistance block high-entropy alloy and a preparation method and application thereof. The high-wear-resistance block high-entropy alloy comprises the following chemical components in percentage by mass: 10.5-12.5 wt.% of Ti, 0.5-1.5 wt.% of B, 21.5-23.5 wt.% of Cr, 38-40 wt.% of Ni, 0-12.5 wt.% of Al and the balance of Fe and part of inevitable impurities, and meanwhile, it needs to be ensured that Ti + B is more than or equal to 10 and less than or equal to 15 wt.%, Cr + Ni is more than or equal to 55 and less than or equal to 65 wt.%, Fe/Ti is more than or equal to 0.5 and less than or equal to 2.5, and the sum of the mass percentages of all the components is 100%. The purity of all related element raw materials is not lower than 99.99%. The prepared high-entropy alloy has the characteristics of being uniform in component distribution, high in stability ...

Production method for medium-high carbon high-strength steel homogenized casting blank

The invention relates to a production method for a medium-high carbon high-strength steel homogenized casting blank. The invention adopts the technical scheme that the production method comprises the step that a compound filler cored wire is fed into medium-high carbon high-strength molten steel in a continuous casting crystallizer or an ingot mold, wherein the fed compound filler cored wire accounts for 0.3 to 1.2 percent by weight of the medium-high carbon high-strength molten steel, the feeding speed Vband of the compound-filled cored wire is equal to A*Vcasting*(Ttundish -Tliqudus)/Tliqudus, and the vibrating frequency of a band feeding machine is 50-35,000 Hz; the compound filler cored wire is a mixture of passivated iron sand and a high-melting-point carbonitride, the carbonitride accounts for 1-10 percent by weight of the compound filler cored wire, and the high-melting-point carbonitride is a carbonitride formed by Zr and/or Nb. The production method provided by the invention is ...

Nb-containing high-carbon and high-duty steel based on sheet bar process and method for manufacturing same

The invention relates to a Nb-containing middle-high carbon high-strength steel based on a sheet billet process and a method for manufacturing the same. In the technical proposal, a steel grade comprises the following chemical compositions by weight percent: 0.25 to 1.25 weight percent of C, 0.01 to 0.15 weight percent of Nb, 0.001 to 0.1 weight percent of Al, 0.0010 to 0.0050 weight percent of Ca and the balance being Fe, inevitable impurity and alloy elements; and the bending strength of the prepared steel plate is between 350 and 1500 MPa. The sheet billet process comprises the following process parameters that: the thickness of the sheet billet is between 50 and 90 mm; the casting speed of the sheet billet is between 2.5 and 6.0 m/min; the temperature when a casting blank enters a heating furnace is between 900 and 1100 DEG C; the temperature when the casting blank enters a soaking furnace is between 1000 and 1250 DEG C; the initial rolling temperature is between 1000 and 1200 DEG C ...

Balanced impulse type environmental protection doser

Balanced impulse type environmental protection doser. Can solve big, the dangerous height of the wasting of resources, pollution of prior art existence and the problem of operating inconvenience. The outer tube passes through clamp head and well head sleeve pipe sealing connection, the outer tube is inside to be equipped with interior sleeve pipe, and the clamp head is passed to interior sleeve pipe one end, and to be in the well head sleeve pipe inboard, the baffle contact inside with being in the outer tube of the interior sleeve pipe other end, the baffle middle part is connected with propulsion screw one end, the propulsion screw other end at the outer tube not with well head bushing's one end outside, outer tube middle section upper end with add medicine outlet pipe lower extreme turn -on connection, add medicine outlet pipe middle section and be connected with with the medicine outlet valve, add a medicine outlet pipe upper end and a jar body turn -on connection, jar positive terminal ...

Soldering boat deck steel in high intensity by large line energy, and manufacturing method

Complex deoxidizer for smelting high heat input welded high-strength steel and using method thereof

The invention relates to a complex deoxidizer for smelting high heat input welded high-strength steel and a using method thereof. The complex deoxidizer comprises the following chemical components in percentage by weight: 75 to 90 percent of Si, 1 to 5 percent of Ca, 5 to 20 percent of Ti, 1 to 10 percent of Ba, 1 to 5 percent of Mg and the balance of Fe and inevitable impurities. A method for preparing the complex deoxidizer comprises the following steps of: adding Ti, Ba and Mg based on Si-Ca alloy according to the components; smelting through a vacuum induction furnace; and casting. The using method of the prepared complex deoxidizer comprises the following steps of: keeping free oxygen content in molten steel at 10 to 200ppm before the complex deoxidizer is added; deoxidizing and complexly alloying by using the complex deoxidizer, wherein 0.5 to 5kg of complex deoxidizer is added into every ton of steel; and performing continuous casting and hot rolling by the conventional process.

Load bearing detection cable

The invention relates to a load bearing detection cable, which comprises a cable core, the cable core comprises a power line for providing a power supply for a logging instrument, a signal line for transmitting a logging signal output by the logging instrument, and a first shielding layer wrapping the outer surface of the power line, and the inner side of the first shielding layer is provided with an electromagnetic wave energy conversion material layer; the insulating layer coats the outer surface of the cable core; the second shielding layer coats the outer surface of the insulating layer; and the armor layer coats the outer surface of the second shielding layer. According to the load-bearing detection cable disclosed by the invention, the influence of electromagnetic interference generated by the power line on the transmission of the logging signal by the signal line can be reduced to the greatest extent, the transmission performance of the load-bearing detection cable for transmitting ...

Air cooling device of quick cooling welding joint and use method thereof

Ultra-high strength bainite rail steel and manufacturing method thereof

The invention relates to ultra-high strength bainite rail steel and a manufacturing method thereof. The technical proposal is as follows: the casting billet comprises the following chemical components: 0.20-0.50wt% of C, 1.10-1.70wt% of Si, 1.60-2.40wt% of Mn, 1.00-1.60wt% of Cr, 0.10-0.60wt% of Mo, 0.05-1.20wt% of Al, P less than 0.015wt%, S less than 0.010wt% and the balance Fe and inevitable impurities. The method is characterized by carrying out die casting or continuous casting after steel making and refining; soaking the casting billet at the temperature of 1150-1250 DEG C for 2.0-3.0h, hot rolling and cooling the casting billet; austenitizing the casting billet at the temperature of 850-1050 DEG C for 0.2-0.6h; then insulating the casting billet at the temperature of 300-600 DEG C in the nitrogen atmosphere for 2.0-6.0h, or insulating the casting billet at the temperature of 300-600 DEG C in the nitrogen atmosphere and in the strong magnetic field of 8-12T for 0.2-1.0h. The invention ...

Method for Optimizing Blade Axis Position of Water Pump under All Operating Conditions

A method for optimizing the blade axis position of a water pump under all operating conditions which includes determination of multiple calculation conditions within the range of all the operating conditions of the water pump, three-dimensional modeling and mesh generation of the calculation area of the flow field of the water pump at multiple blade angles, numerical simulation of the flow field and calculation and determination of blade hydraulic torques under multiple conditions, determination of the range of the position of the blade resultant hydraulic pressure action line and an optimal blade axis position under all the operating conditions, determination of the small region of the optimal blade axis position under all the operating conditions, determination of the optimal blade axis position, and comparison of the blade hydraulic torques before and after optimization of the blade axis position.

Well logging while drilling optical fiber sensing detection cable

The invention discloses a logging-while-drilling optical fiber sensing detection cable which sequentially comprises an outer sheath, an armor layer and an outer flame-retardant layer from outside to inside, a first cladding and a second cladding are arranged in the outer flame-retardant layer, containing grooves are formed between the first cladding and the second cladding, an optical cable unit is contained in each containing groove, and the outer sheath is sleeved with the armor layer. The optical cable unit comprises a stainless steel tube cladding, a stainless steel tube and an optical fiber; the second wrapping layer is internally provided with a skeleton unit and a plurality of cable core units, the skeleton unit is internally provided with a pressure-resistant cable and a plurality of tensile ropes, the skeleton unit is provided with a plurality of cable core grooves, each cable core groove is internally provided with one cable core unit, each cable core unit sequentially comprises ...

On-line process for improving performance of welding heat affected zone

The invention relates to an on-line process for improving performance of a welding heat affected zone. According to the technical scheme, the process comprises the following steps of: blowing compressed gas at a welding joint which is 20 to 50mm away from a welding arc along with the forward movement of the welding arc in the welding process of steel for 2 to 10 seconds; immediately covering the welding joint by using heat preservation cotton along with the departure of the compressed gas and slowly cooling to room temperature; and continuously performing welding, blowing and slow cooling processes respectively until the entire welding joint is cooled to the room temperature, wherein the compressed gas is air, the pressure of the compressed gas is between 0.5 and 1.0MPa, and the flow rate of the compressed gas is between 5 and 10L/min; and the welding joint is one of welding joints which are formed by a manual arc welding method, a submerged arc welding method, a gas shielded welding method ...

Thermal treatment method for thinning weld metal structure

The invention relates to a thermal treatment method for thinning a weld metal structure. The technical scheme thereof comprises the following steps: for the weld metals of carbon steel and low-alloy steel, the treatment conditions comprises a heating rate of 350-400 DEG C per hour, a thermal treatment temperature between a transformation point A and a transformation point A, 1.5-2 hours of temperature keeping and air cooling; for the weld metals of high-alloy steel, the treatment conditions comprise a heating rate of 350-400 DEG C per hour, a thermal treatment temperature between a transformation point A and a transformation point A, 1.5-2 hours of temperature keeping and air cooling; drawing temper at a temperature lower than the transformation point A is carried out. The weld metals comprise the weld structures formed by manual electric arc welding, hidden arc welding, electrogas welding, CO2 gas shielded welding and consumable electrode argon welding. The invention ...

Oil exploration for robot radio frequency hold lotus exploration cable

The utility model discloses an oil exploration for robot radio frequency hold lotus exploration cable, including the fibre core, the fibre core includes three radio frequency transmission cores (4), article two, data transmission core and two circular telegram cores, the outside of fibre core has set gradually half conductor shield (3), inner steel wire armor (2) and outer layer wire armor (1), radio frequency transmission core (4) is including radio frequency conductor conductor (44), the outside of radio frequency conductor conductor (44) has set gradually first insulation layer (41), iron shielded layer (42) and inoxidizing coating (43), the data transmission core all includes function conductor conductor (51) with the circular telegram core, the outside of function conductor conductor (51) is provided with second insulating layer (52). The utility model discloses lie in that this bearing nature of cable and wearability are good, can anticorrosive, grease proofing, acid and alkali -resistance ...

Installation device is contained to concrete pipe

The utility model discloses an installation device is contained to concrete pipe, including low reaches end, upper reaches end, wire rope and turn -buckle, the L type frame of low reaches end for constituting by vertical portion and horizontal part fixed connection, the rectangular frame of upper reaches end for being provided with horizontal rib post, the turn -buckle is fixed on the horizontal part, turn -buckle, other end fixed connection are passed to wire rope one end horizontal rib post. The utility model is used for but one -time Setup target in place when installation concrete pipe was contained, need not to adjust repeatedly, and tube coupling seam crossing sealing effect is good moreover, need not subsequent processing, and it is very convenient to operate, can improve the efficiency of construction greatly, device processing is simple, low cost.

Soldering low alloy steel plate in high intensity by large line energy, and manufacturing method

High-toughness gas protective welding wire for large-linear energy welding low-alloy steel

The invention relates to a high-toughness gas protective welding wire for large-linear energy welding low-alloy steel. The technical scheme is that the welding wire comprises the following chemical components in percentage by weight: 0.02-0.12 percent by weight of C, 1.00-2.50 percent by weight of Mn, 0.05-0.50 percent by weight of Si, 0.03-0.30 percent by weight of Ti, 0.001-0.004 percent by weight of B, less than or equal to 0.50 percent by weight of Cr, less than or equal to 0.5 percent by weight of Mo, less than or equal to 0.025 percent by weight of S, less than or equal to 0.025 percentby weight of P, 0.03-0.3 percent by weight of two or three kinds of Ca, Mg and Ba and the balance of Fe and inevitable impurities. The high-toughness gas protective welding wire is manufactured by the following steps: carry out steel making on molten iron or scrap steel or the molten iron and the scrap steel by adopting a converter or an electric arc furnace, and then refining and adjusting molten iron ...

High-wear-resistance blocky high-entropy alloy heat treatment method, high-entropy alloy obtained through method and application of high-entropy alloy

The invention belongs to the field of high-entropy alloy preparation, processing and heat treatment, and particularly relates to a heat treatment method for a high-wear-resistance blocky high-entropy alloy, the high-entropy alloy obtained through the method and application of the high-entropy alloy. According to the heat treatment method, the high-entropy alloy ingot is subjected to heat treatment, the method comprises the alloy treatment processes of quenching and tempering, hot forging and cold rolling of the high-entropy alloy, the performance of the obtained heat-treated high-entropy alloy is remarkably improved compared with that of the high-entropy alloy subjected to solution treatment, and an alloy material with high strength, high plasticity and toughness and good comprehensive mechanical performance is obtained. According to the method, the segregation phenomenon of the high-entropy alloy after solution treatment is avoided through the repeated smelting technology, the high-entropy ...

Complex additive for spheroidizing and dispersing sulfides in steel and use method thereof

The invention relates to a complex additive for spheroidizing and dispersing sulfides in steel and a use method thereof. The invention adopts the technical scheme that the complex additive comprises the following chemical components in percentage by weight: 30-65wt% of Si, 5-15wt% of Ca, 5-25wt% of Ti, 10-35wt% of Zr, 10-35wt% of Nd and the balance Fe and inevitable impurities. The complex additive is prepared by adding Ti, Zr and Nd on the basis of Si-Ca alloy according to the components by smelting and casting in a vacuum induction furnace. The use method of the complex additive comprises the following steps: before the complex additive is added, keeping the content of the free oxygen in molten steel to be 10-300ppm, then carrying out deoxidization and complex alloying by the complex additive, and adding the complex additive into the molten steel in a form of blocky alloy or core-spun yarn, wherein the additive amount is 0.5-5kg per ton of steel. The invention has the characteristics ...

Ultra-high strength high-ductility steel and manufacturing method thereof

The invention relates to ultra-high strength high-ductility steel and a manufacturing method thereof. The technical proposal is as follows: the casting billet comprises the chemical components with the contents as follows: 0.30-0.70wt% of C, 1.20-1.80wt% of Si, 2.00-6.00wt% of Mn, 1.00-5.00wt% of Cr, 0.10-0.60wt% of Mo, 0.06-0.12wt% of V, 0.05-1.20wt% of Al, P less than 0.015wt%, S less than 0.010wt% and the balance Fe and inevitable impurities. The method is characterized by carrying out die casting or continuous casting after steel making and refining; soaking the casting billet at the temperature of 1150-1250 DEG C for 2.0-3.0h, hot rolling and naturally cooling the casting billet; austenitizing the cooled steel plates at the temperature of 850-1050 DEG C for 0.2-0.6h; then insulating the steel plates at the temperature of 200-500 DEG C in the nitrogen atmosphere for 10.0-240.0h, or insulating the steel plates at the temperature of 200-500 DEG C in the nitrogen atmosphere and in the ...

Method for preparing down feather with self-cleaning function

The invention provides a method for preparing down feather with a self-cleaning function. The method comprises the following steps: (1) constructing a light degradation system by using sulfonated polyetheretherketone and polypeptide; (2) soaking and dehydrating; and (3) spraying a water-repellant and oil-repellant finishing agent to prepare the down feather with the self-cleaning function. The surface of the prepared down feather is coated with a layer of sulfonated polyetheretherketone/polypeptide powder film and water-repellant and oil-repellant components. The water-repellant and oil-repellant components are used for preventing most pollutants from staining the down feather. Even if the down feather is stained by pollutants, the sulfonated polyetheretherketone/polypeptide powder film can form active free radicals under the irradiation of ultraviolet light, organic pollutants on the down feather are degraded by using the photocatalytic performance of the active free radicals, and pollutants ...

High-strength and high-toughness steel with lasting high-temperature strength as well as manufacturing method and application of high-strength and high-toughness steel

The invention belongs to the technical field of metal materials, and particularly relates to high-strength and high-toughness steel with lasting high-temperature strength and a manufacturing method and application of the high-strength and high-toughness steel. The refractory steel with lasting high-temperature strength comprises the following components in percentage by weight: 0.011% < = C < = 0.049%, 0.11% < = Si < = 0.19%, 1.41% < = Mn < = 1.51%, 0.0005% < = S, 0.020% < = P, 1.1% < = Ni < = 1.3%, 0.1% < = Mo < = 0.3%, 0.02% < = Al < = 0.04%, 300 * 10 <-4 >% < = O < = 400 * 10 <-4 >% < = Zr + Ti + Mg < = 600 * 10 <-4 >%, and the contents of Zr, Ti and Mg meet the following formula: Ti/Zr = 50-70, Zr/Mg = 2-4 and the balance of Fe. The material has stable and excellent high-temperature mechanical properties, and can be widely applied to fire-resistant and high-temperature-resistant aging structures and the like.

Iron removal equipment for down feather processing

The utility model relates to iron removal equipment for down feather processing. The device comprises a box, a motor, a transmission shaft, mounting plates and blowers, wherein the box body is arranged on the bracket; a feeding pipe and a dust discharging pipe are arranged at the top of the box body; a discharging pipe is arranged at the bottom of the side wall of the box body, a bearing is arranged on the inner side wall of the box body, the motor is arranged on the outer side wall of the box body, one end of the transmission shaft is connected with the motor, the other end of the transmission shaft extends into the bearing, the installation plate is installed at the bottom of the box body through installation bolts, and the air blower is installed at the top of the box body. According tothe utility model, the motor drives the transmission shaft and the fixed rod and the poke rod on the transmission shaft to rotate; and in the rotating process, the fixed rod and the poking rod can poke ...

Preparation method of TEM sample of A356 series aluminum alloy

The invention belongs to the technical field of TEM sample preparation, and particularly relates to a preparation method of an A356 series aluminum alloy TEM sample, which comprises the following steps: firstly, carrying out pretreatment and punching treatment on an A356 series aluminum alloy sheet, then, carrying out pit treatment on the aluminum alloy subjected to punching pretreatment, then, carrying out electrolytic double-ejection hole treatment on the aluminum alloy subjected to pit treatment in a low-temperature environment, and finally, preparing the A356 series aluminum alloy TEM sample. And finally, carrying out ion thinning finishing on the sample subjected to electrolytic polishing to finally obtain the TEM sample. According to the method, the accuracy and success rate of preparation of the TEM sample of the A356 series aluminum alloy with uneven local microstructure components can be improved, the accuracy is reflected in improvement of the polishing effect, reduction of introduction ...

Large-linear energy welding low-alloy high-strength steel plate and manufacturing method thereof

The invention relates to a large-linear energy welding low-alloy high-strength steel plate and a manufacturing method thereof. The technical scheme is that steel billets contain the following chemicalcomponents in percentage by weight: 0.01-0.18 percent by weight of C, 0.05-0.60 percent by weight of Si, 1.50-2.50 percent by weight of Mn, 0.10-1.50 percent by weight of Ni, 0.10-1.50 percent by weight of Cu, 0.001-0.060 percent by weight of Als, 0.01-0.08 percent by weight of Nb, 0.002-0.012 percent by weight of N, 0.001-0.003 percent by weight of B, less than 0.015 percent by weight of P, lessthan 0.010 percent by weight of S, 0.1-0.9 percent by weight of ZrO2 and the balance of Fe and inevitable impurities. The manufacturing process of the steel plate comprises the following steps: carrying out steel making on molten iron or scrap steel or the molten iron and the scrap steel, and then refining; adding alloy elements according to chemical components of the steel billets and then carrying ...

Large-linear energy welding low-alloy high-strength steel plate and manufacturing method thereof

The invention relates to a large-linear energy welding low-alloy high-strength steel plate and a manufacturing method thereof. The technical scheme is that steel billets contain the following chemical components in percentage by weight: 0.01-0.18 percent by weight of C, 0.05-0.60 percent by weight of Si, 1.50-2.50 percent by weight of Mn, 0.10-1.50 percent by weight of Ni, 0.10-1.50 percent by weight of Cu, 0.001-0.060 percent by weight of Als, 0.01-0.08 percent by weight of Nb, 0.002-0.012 percent by weight of N, 0.001-0.003 percent by weight of B, less than 0.015 percent by weight of P, less than 0.010 percent by weight of S, 0.1-0.9 percent by weight of ZrO2 and the balance of Fe and inevitable impurities. The manufacturing process of the steel plate comprises the following steps: carrying out steel making on molten iron or scrap steel or the molten iron and the scrap steel, and then refining; adding alloy elements according to chemical components of the steel billets and then carrying ...

Soldering not quenching and tempering steel plate in high intensity by large line energy, and manufacturing method

This invention relates to a method for producing non-quenched and tempered high-strength steel plate suitable for high heat input welding. The chemical compositions are: C 0.01-0.25 wt.%, Si 0.05-0.5 wt.%, Mn 0.5-1.8 wt.%, Als 0.001-0.06 wt.%, Nb 0.01-0.08 wt.%, Ti 0.01-0.08 wt.%, N 0.002-0.012 wt.%, B 0.0001-0.003 wt.%, P less than 0.015 wt.%, S less than 0.015 wt.%, Fe and impurities. The method comprises: steelmaking and refining molten iron, waste steel or their mixture in a converter or electric arc furnace so that the oxygen content is 10-600 ppm, performing deoxidation with Fe-Ti alloy or metal Ti, performing final deoxidation with Al wire, adding B, continuously casting, and hot-rolling. The obtained steel plate is suitable for 150-600 kJ/cm high heat input welding, and has such advantages as high welding quality, high production efficiency, and saved energy.

High-toughness gas protective welding wire for large linear energy welding high-strength steel plate

The invention relates to a high-toughness gas protective welding wire for large-linear energy welding high-strength steel plates. The welding wire contains the following chemical components in percentage by weight: 0.02-0.12 percent by weight of C, 1.00-2.50 percent by weight of Mn, 0.05-0.50 percent by weight of Si, 0.03-0.30 percent by weight of Ti, 0.03-0.30 percent by weight of Zr, 0.001-0.004percent by weight of B, less than or equal to 0.50 percent by weight of Cr, less than or equal to 0.025 percent by weight of S, less than or equal to 0.025 percent by weight of P, and the balance ofFe and inevitable impurities. The high-toughness gas protective welding wire is manufactured by the following steps: carry out steel making on molten iron or scrap steel or the molten iron and the scrap steel by adopting a converter or an electric arc furnace, and then refining and adjusting molten iron components, casting into square billets, and then rolling into coil rods and cold-drawing intowelding ...

Method for producing medium-high-carbon high-strength steel based on sheet bar technology

The invention relates to a production method of high-carbon and high-strength steel based on a thin slab process. The method adopts the technical proposal that: the steel is made by steelmaking, refining process, slab continuous casting, heating, soaking, hot continuous rolling, cooling and coiling. Wherein: the thickness of a thin slab ranges from 50 to 90mm, a continuous casting billet has a drawing speed of 2.5 to 6.0m/min, a heating furnace has a temperature of between 900 and 1100DEG C, a soaking pit has a temperature of between 1000 and 1250DEG C, the initial rolling temperature is between 1000 and 1200DEG C, the finishing temperature is between 650 and 950DEG C, the coiling temperature is between 450 and 850DEG C, and the thickness of a steel plate ranges from 1 too 12mm. The high-carbon and high-strength steel comprises the chemical constituents: 0.25 to 1.25 wt percent of carbon content, 0.001 to 0.1wt percent of Al, 0.0010 to 0.0050 wt percent of Ca, balance Fe, unavoidable impurities ...

Feather down washing charging method and accurate charging washing machine

The invention discloses a feather down washing charging method. The feather down washing charging method includes the steps that firstly, water injection is conducted, feather down to be washed is placed, and an intensive washing agent with the amount smaller than the standard amount is added for the first time, wherein the intensive washing agent is an anionic or zwitter-ion down intensive washing agent; secondly, after washing is conducted in rated time, the conductivity of washing liquid is measured, and the intensive washing agent is supplemented and added till the conductivity reaches the standard washing conductivity interval; thirdly, washing is continuously conducted, and the feather down washing procedure is finished. The method has the following advantages that environment friendliness is achieved, wherein the assistant is accurately added multiple times, on the premise that down intensive washing quality is guaranteed, the charging volume of the assistant is reduced by 1/3 to ...

Nano-structured ultrahigh-strength dual-phase steel and production method thereof

The invention relates to nano-structured ultrahigh-strength dual-phase steel and a production method thereof. The production method comprises the following steps: austenitizing steel billet at 850-1,050 DEG C for 0.2-0.6 hour; water-bath quenching at 0-100 DEG C, and holding the temperature for 1.0-10.0 minutes; performing carbon distribution and tempering at 300-600 DEG C for 0.01-1.0 hour; and fnally quenching with water to room temperature. The medium for carbon distribution and tempering is one of salt bath, inert gas atmosphere and weak reducing atmosphere. The steel billet comprises thefollowing chemical components in percentage by weight: C 0.71-1.00, Si 1.00-2.00, Mn 1.00-2.00, Cr 1.00-1.60, Mo 0.05-1.00, Al 0.05-1.00, Nb 0.00-0.2, Ti 0.00-0.2%, V 0.00-0.2%, P less than 0.015%, Sless than 0.010%, and Fe and unavoidable impurities as balance, wherein the sum of the contents of Si, Mn, Cr, Mo and Al is less than or equal to 6.00%, and the sum of the contents of Nb, Ti and V isless ...

Device applied to building network wiring

The utility model belongs to the technical field of network wiring. The device comprises a wiring box, the top and the bottom of the inner wall of the wiring box are fixedly connected with a telescopic assembly and a fixing plate correspondingly, the opposite faces of the telescopic assembly and the fixing plate are fixedly connected with positioning rollers correspondingly, and the front face ofthe inner wall of the wiring box is fixedly connected with a cleaning cylinder; the utility model is advantageous in that the structure is simple, fourth handle, rotating shaft capable of being drivento rotate, further, the winding wheel can rotate; the winding and unwinding of the cable can be realized through the winding wheel; wiring and tidy arrangement of cables are facilitated; the device adopts a rotating shaft, a winding wheel, a positioning roller, a placing plate, a cleaning cylinder and a cleaning brush, realizes positioning winding and cleaning of a cable, realizes convenient carrying ...

Ultra-high strength bainite armour steel and manufacturing method thereof

The invention relates to ultra-high strength bainite armour steel and a manufacturing method thereof. The technical proposal is as follows: the casting billet comprises the following chemical components: 0.70-1.10wt% of C, 1.20-1.80wt% of Si, 1.60-2.20wt% of Mn, 1.00-1.60wt% of Cr, 0.10-0.60wt% of Mo, 0.05-1.20wt% of Al, 0.05-0.50wt% of Co, P less than 0.015wt%, S less than 0.010wt% and the balance Fe and inevitable impurities. The method is characterized by carrying out die casting or continuous casting after steel making and refining; soaking the casting billet at the temperature of 1150-1250 DEG C for 2.0-3.0h, hot rolling and cooling the casting billet; austenitizing the casting billet at the temperature of 850-1050 DEG C for 0.2-0.6h; then insulating the casting billet at the temperature of 200-500 DEG C in the nitrogen atmosphere for 10.0-240.0h, or insulating the casting billet at the temperature of 200-500 DEG C in the nitrogen atmosphere and in the strong magnetic field of 8-12T ...

Ultra-high strength bainite rail steel and manufacturing method thereof

The invention relates to ultra-high strength bainite rail steel and a manufacturing method thereof. The technical proposal is as follows: the casting billet comprises the following chemical components: 0.20-0.50wt% of C, 1.10-1.70wt% of Si, 1.60-2.40wt% of Mn, 1.00-1.60wt% of Cr, 0.10-0.60wt% of Mo, 0.05-1.20wt% of Al, P less than 0.015wt%, S less than 0.010wt% and the balance Fe and inevitable impurities. The method is characterized by carrying out die casting or continuous casting after steel making and refining; soaking the casting billet at the temperature of 1150-1250 DEG C for 2.0-3.0h,hot rolling and cooling the casting billet; austenitizing the casting billet at the temperature of 850-1050 DEG C for 0.2-0.6h; then insulating the casting billet at the temperature of 300-600 DEG C in the nitrogen atmosphere for 2.0-6.0h, or insulating the casting billet at the temperature of 300-600 DEG C in the nitrogen atmosphere and in the strong magnetic field of 8-12T for 0.2-1.0h. The invention ...

Titania type gas-shielded flux-cored wire and preparation method thereof

The invention relates to a titania type gas-shielded flux-cored wire and a preparation method thereof. The technical scheme thereof is that the flux-cored wire is prepared from the following chemical ingredients: 18-22wt% of SiO2, 1-5wt% of Al2O3, 35-50wt% of TiO2, 0.5-1.0wt% of CaO, 2-5wt% of Na2O and K2O, 0.2-0.6wt% of C, 12.0-16.0wt% of Mn, 10-20wt% of micron-sized oxide particles, and balance of Fe and inevitable impurities; the ingredients are mixed, coated with low-carbon low-silicon steel band and drawn to prepare the core wire, wherein the oxide particles are Ti2O3 particles, or ZrO2 particles, or the composite particles of Ti2O3 and ZrO2. The invention has the advantages of simple components and low cost; the prepared core wire is capable of obtaining weld metals with impact ductility not less than 120J at 0 DEG C, the data dispersing values of impact tests are in the range of average value ()12J, the tensile strength reaches 550-750MPa, and the core wire is applicable to the welding ...

Bidirectional oscillator

The utility model discloses a bidirectional oscillator, which comprises an outer liner tube (12) and a primary oscillation assembly (17), the primary oscillation assembly (17) and the outer liner tube(12) generate primary impact force through relative movement, and the bidirectional oscillator is characterized in that a secondary oscillation assembly (19) is fixedly connected in the outer liner tube (12); removing the fixed connection between the secondary oscillation assembly (19) and the outer lining pipe (12), and enabling the outer lining pipe (12) and the secondary oscillation assembly (19) to move relatively so as to generate a secondary impact force; the problem that each working stroke of an existing oscillator can only achieve one-time impact type vibration on an underground blanking plug is solved.

Integrated metal-supported cell stack repeating unit and preparation method and application thereof

The invention provides an integrated metal-supported cell stack repeating unit and a preparation method and application thereof. A structural repeating unit of the cell stack comprises an electrochemical reaction functional layer, a porous metal support body, an anode fuel channel layer, a connector and a cathode air channel layer, except the electrochemical reaction functional layer, other structural functional layers are all made of stainless steel materials, and the functional layers are tightly combined in sequence through a diffusion welding process, so that the structural repeating unit is formed. An anode fuel channel and a cathode air channel do not need to be formed through a powder metallurgy or high-temperature sintering process, the anode side contact resistance in the electric pile structure unit is eliminated, the same physical and chemical characteristics of adjacent components and the sealing reliability of the anode channel can be ensured, and the preparation cost of the ...

Preparation method for improving density of AlxCoCrFeNi series high-entropy alloy

The invention belongs to the technical field of metal materials, and particularly relates to a preparation method for improving the density of an AlxCoCrFeNi series high-entropy alloy, the obtained alloy and application of the alloy. The preparation method comprises the following steps: firstly, preparing high-purity metal elementary substance powder through an aerial fog method laminar flow atomization technology; then mixed metal powder is prepared through a mechanical alloying method; the mixed metal powder is sintered into a blocky alloy sample through a plasma sintering technology; and finally, carrying out pressing treatment on the sintered and cooled alloy sample by utilizing hot isostatic pressing. The alloy prepared through the method is uniform and compact in microstructure and small in grain size, the mechanical property of the alloy is superior to that of an AlxCoCrFeNi series high-entropy alloy prepared in an as-cast state, and the alloy has wide industrial application value ...

B-element micro-alloyed bulk high-entropy alloy with high wear resistance, preparation method therefor, and applications thereof

The present invention belongs to the field of technologies for designing and preparing novel alloy materials, and in particular, relates to a B-element micro-alloyed bulk high-entropy alloy with high wear resistance, a preparation method therefor, and applications thereof. The high-entropy alloy includes the following chemical components in corresponding percentages by mass: Al: 10.70-10.82 wt%, Cr: 20.80- 2094 wt%, Ni: 35.40-35.56 wt%‚ Ti: 19.20-19.33 wt%, B: 0.10-0.25 wt%, and the balance of Fe and unavoidable impurities, and the chemical components need to simultaneously meet the following three relations: (1) 52 < Fe/B < 138, (2) 1.2 < Fe/(B+Al) < 1.3, and (3) 0.7 < Fe/(B+Ti) <l.3. The alloy has an obvious dendritic structure in uniform distribution, and has high hardness, and good wear resistance which is 3-5 times higher than that of a traditional wear-resistant material NMSOO in terms of the same hardness. After two-step tempering heat treatment under the same parameters, the NMSOO is reduced in hardness by 58.64-68.93% with respect to its quenched and tempered condition, and the hardness of the material of the present invention is reduced by 15.85-18.09% with respect to its as-cast condition, showing better hi gh-temperature stability.

Nb-ELEMENT MICRO-ALLOYED BULK MULTI-COMPONENT ALLOY WITH HIGH-TEMPERATURE RESISTANCE AND WEAR RESISTANCE, PREPARATION METHOD THEREFOR, AND APPLICATIONS THEREOF

The present invention belongs to the field of technologies for designing and preparing novel alloy materials, and in particular, relates to an Nb-element micro-alloyed bulk multi-component alloy with high-temperature resistance and wear resistance, a preparation method therefor, and applications thereof. The multi-component alloy includes the following chemical components at corresponding contents: Al: 2.10-2.24 wt%, Cr: 20.70-20.86 wt%, Ni: 35.20-35.54 wt%, Ti: 19.10-19.46 wt%, Nb: 0.70-0.85 wt%, and the balance of Fe and unavoidable impurities, and the chemical components need to simultaneously meet the following three relations: (1) 24.76 £ Fe/Nb g 31.72, (2) 6.81 5 Fe/(Nb+Al) 5 7.93; (3) 1.04 5 Fe/(Nb+Ti) g 1.13. The multi- component alloy has a uniformly distributed structure, high hardness, and good wear resistance which is 4-5 times higher than that of a traditional wear-resistant material NMSOO in terms of the same hardness. After two-step tempering heat treatment under the same parameters, the NMSOO is reduced in hardness by 58.64-68.93% with respect to its quenched and tempered condition, and the hardness of the material of the present invention is reduced by 31.75-37.74% with respect to its as-cast condition, showing better high-temperature stability. (FIG. 1)

Method for optimizing blade axis position of water pump under all operating conditions

A method for optimizing the blade axis position of a water pump under all operating conditions which includes determination of multiple calculation conditions within the range of all the operating conditions of the water pump, three-dimensional modeling and mesh generation of the calculation area of the flow field of the water pump at multiple blade angles, numerical simulation of the flow field and calculation and determination of blade hydraulic torques under multiple conditions, determination of the range of the position of the blade resultant hydraulic pressure action line and an optimal blade axis position under all the operating conditions, determination of the small region of the optimal blade axis position under all the operating conditions, determination of the optimal blade axis position, and comparison of the blade hydraulic torques before and after optimization of the blade axis position.

Price prediction method of down materials based on lstm deep learning model

Nb-ELEMENT MICRO-ALLOYED BULK MULTI-COMPONENT ALLOY WITH HIGH-TEMPERATURE RESISTANCE AND WEAR RESISTANCE, PREPARATION METHOD THEREFOR, AND APPLICATIONS THEREOF

The present invention belongs to the field of technologies for designing and preparing novel alloy materials, and in particular, relates to an Nb-element micro-alloyed bulk multi-component alloy with high-temperature resistance and wear resistance, a preparation method therefor, and applications thereof. The multi-component alloy includes the following chemical components at corresponding contents: Al: 2.10-2.24 wt%, Cr: 20.70-20.86 wt%, Ni: 35.20-35.54 wt%, Ti: 19.10-19.46 wt%, Nb: 0.70-0.85 wt%, and the balance of Fe and unavoidable impurities, and the chemical components need to simultaneously meet the following three relations: (1) 24.76 £ Fe/Nb g 31.72, (2) 6.81 5 Fe/(Nb+Al) 5 7.93; (3) 1.04 5 Fe/(Nb+Ti) g 1.13. The multi- component alloy has a uniformly distributed structure, high hardness, and good wear resistance which is 4-5 times higher than that of a traditional wear-resistant material NMSOO in terms of the same hardness. After two-step tempering heat treatment under the same parameters, the NMSOO is reduced in hardness by 58.64-68.93% with respect to its quenched and tempered condition, and the hardness of the material of the present invention is reduced by 31.75-37.74% with respect to its as-cast condition, showing better high-temperature stability. (FIG. 1)

LA-ELEMENT MICRO-ALLOYED AlCrFeNiTi SERIES BULK ALLOY WITH HIGH CORROSION RESISTANCE AND WEAR RESISTANCE, AND PREPARATION METHOD THEREFORE AND APPLICATIONS THEREOF

The present invention belongs to the technical field of design and preparation of novel alloy materials, and particularly relates to a La-element micro-alloyed AlCrFeNiTi bulk alloy with high corrosion resistance and wear resistance, and a preparation method therefor and applications thereof. The alloy includes the following chemical components in corresponding percentages: 2.05 wt% to 2.15 wt% of Al, 20.50 wt% to 20.65 wt% of Cr, 34.50 wt% to 35.54 wt% ofNi, 18.80 wt% to 19.16 wt% of Ti, 1.05 wt% to 1.15 wt% ofLa, and the balance ofFe and inevitable impurities, wherein the chemical components need to meet the following three relations at the same time: (1) 18.57£Fe/La£22.00, (2) 6.473Fe/(La+Al)£7.45, and (3) 1.05£Fe/(La+Ti)£1.16. The bulk alloy is of a uniformly distributed structure and has high hardness, high wear resistance and excellent corrosion resistance. Compared with AISI 310S stainless steel with excellent wear resistance and corrosion resistance, the bulk alloy provided by the present invention is improved by 280% to 290% in hardness, reduced by 4% to 7% in friction coefficient, and reduced by 17% to 34% in wear amount, increased by 73% to 77% in self-corrosion potential, and decreased by 96% in corrosion current density on average. (FIG. 1)

LA-ELEMENT MICRO-ALLOYED AlCrFeNiTi SERIES BULK ALLOY WITH HIGH CORROSION RESISTANCE AND WEAR RESISTANCE, AND PREPARATION METHOD THEREFORE AND APPLICATIONS THEREOF

The present invention belongs to the technical field of design and preparation of novel alloy materials, and particularly relates to a La-element micro-alloyed AlCrFeNiTi bulk alloy with high corrosion resistance and wear resistance, and a preparation method therefor and applications thereof. The alloy includes the following chemical components in corresponding percentages: 2.05 wt% to 2.15 wt% of Al, 20.50 wt% to 20.65 wt% of Cr, 34.50 wt% to 35.54 wt% ofNi, 18.80 wt% to 19.16 wt% of Ti, 1.05 wt% to 1.15 wt% ofLa, and the balance ofFe and inevitable impurities, wherein the chemical components need to meet the following three relations at the same time: (1) 18.57£Fe/La£22.00, (2) 6.473Fe/(La+Al)£7.45, and (3) 1.05£Fe/(La+Ti)£1.16. The bulk alloy is of a uniformly distributed structure and has high hardness, high wear resistance and excellent corrosion resistance. Compared with AISI 310S stainless steel with excellent wear resistance and corrosion resistance, the bulk alloy provided by the present invention is improved by 280% to 290% in hardness, reduced by 4% to 7% in friction coefficient, and reduced by 17% to 34% in wear amount, increased by 73% to 77% in self-corrosion potential, and decreased by 96% in corrosion current density on average.

B-element micro-alloyed bulk high-entropy alloy with high wear resistance, preparation method therefor, and applications thereof

The present invention belongs to the field of technologies for designing and preparing novel alloy materials, and in particular, relates to a B-element micro-alloyed bulk high-entropy alloy with high wear resistance, a preparation method therefor, and applications thereof. The high-entropy alloy includes the following chemical components in corresponding percentages by mass: Al: 10.70-10.82 wt%, Cr: 20.80- 2094 wt%, Ni: 35.40-35.56 wt%‚ Ti: 19.20-19.33 wt%, B: 0.10-0.25 wt%, and the balance of Fe and unavoidable impurities, and the chemical components need to simultaneously meet the following three relations: (1) 52 < Fe/B < 138, (2) 1.2 < Fe/(B+Al) < 1.3, and (3) 0.7 < Fe/(B+Ti) <l.3. The alloy has an obvious dendritic structure in uniform distribution, and has high hardness, and good wear resistance which is 3-5 times higher than that of a traditional wear-resistant material NMSOO in terms of the same hardness. After two-step tempering heat treatment under the same parameters, the NMSOO is reduced in hardness by 58.64-68.93% with respect to its quenched and tempered condition, and the hardness of the material of the present invention is reduced by 15.85-18.09% with respect to its as-cast condition, showing better hi gh-temperature stability.

Surgical material delivery device

The present disclosure concerns systems, methods, and kits related to a delivery device for deploying a payload. In specific embodiments, the device deploys a payload after invasive or minimally invasive surgical procedures including, but not limited to, biopsy, intubation, catheter insertion, endoscopic procedures, and robotic procedures. The present disclosure is suited for use to deliver coagulation materials after a biopsy.

Surgical material delivery device

The present disclosure concerns systems, methods, and kits related to a delivery device for deploying a payload. In specific embodiments, the device deploys a payload after invasive or minimally invasive surgical procedures including, but not limited to, biopsy, intubation, catheter insertion, endoscopic procedures, and robotic procedures. The present disclosure is suited for use to deliver coagulation materials after a biopsy.

Nb-ELEMENT MICRO-ALLOYED BULK MULTI-COMPONENT ALLOY WITH HIGH-TEMPERATURE RESISTANCE AND WEAR RESISTANCE, PREPARATION METHOD THEREFOR, AND APPLICATIONS THEREOF

A Nb-element micro-alloyed bulk multi-component alloy with high-temperature resistance and wear resistance, a preparation method therefor, and applications thereof are provided. The alloy includes chemical components at corresponding contents: 2.10-2.24 wt % of Al, 20.70-20.86 wt % of Cr, 35.20-35.54 wt % of Ni, 19.10-19.46 wt % of Ti, 0.70-0.85 wt % of Nb, and the balance of Fe and unavoidable impurities, and the chemical components need to simultaneously meet relations: (1) 24.76≤Fe/Nb≤31.72; (2) 6.81≤Fe/(Nb+Al)≤7.93; (3) 1.04≤Fe/(Nb+Ti)≤1.13. Wear resistance of the alloy is 4-5 times higher than that of a traditional wear-resistant material NM500 in terms of the same hardness. After two-step tempering heat treatment under the same parameters, the NM500 is reduced in hardness by 58.64-68.93% with respect to its quenched and tempered condition, and the hardness of material of this invention is reduced by 31.75-37.74% with respect to its as-cast condition.

La-ELEMENT MICRO-ALLOYED AlCrFeNiTi SERIES BULK ALLOY WITH HIGH CORROSION RESISTANCE AND WEAR RESISTANCE, AND PREPARATION METHOD THEREFORE AND APPLICATIONS THEREOF

A La-element micro-alloyed AlCrFeNiTi bulk alloy with high corrosion resistance and wear resistance and a preparation method therefor and applications thereof are provided. The alloy includes the following chemical components in corresponding percentages: 2.05 wt % to 2.15 wt % of Al, 20.50 wt % to 20.65 wt % of Cr, 34.50 wt % to 35.54 wt % of Ni, 18.80 wt % to 19.16 wt % of Ti, 1.05 wt % to 1.15 wt % of La, and the balance of Fe and inevitable impurities, wherein the chemical components need to meet the following three relations at the same time: (1) 18.57≤Fe/La≤22.00; (2) 6.47≤Fe/(La+Al)≤7.45; and (3) 1.05≤Fe/(La+Ti)≤1.16. Compared with AISI 310S stainless steel, the alloy is improved by 280% to 290% in hardness, reduced by 4% to 7% in friction coefficient, and reduced by 17% to 34% in wear amount, increased by 73% to 77% in self-corrosion potential, and decreased by 96% in corrosion current density on average.