Continuous casting of reactionary metals using a glass covering

A seal for a continuous casting furnace having a melting chamber with a mold therein for producing a metal cast includes a passage between the melting chamber and external atmosphere. As the cast moves through the passage, the cast outer surface and the passage inner surface define therebetween a reservoir for containing liquid glass or other molten material to prevent the external atmosphere from entering the melting chamber. Particulate material fed into the reservoir is melted by heat from the cast to form the molten material. The molten material coats the cast as it moves through the passage and solidifies to form a coating to protect the hot cast from reacting with the external atmosphere. Preferably, the mold has an inner surface with a cross-sectional shape to define a cross-sectional shape of the cast outer surface whereby these cross-sectional shapes are substantially the same as a cross-sectional shape of the passage inner surface.

Alpha titanium alloys

Improved Ti-6Al-4V alloy, with ballistic behavior, preparation process and application.

La présente invention propose une nouvelle composition d'alliages en Ti-6Al-4V qui présente des propriétés de résistance à la traction et de limite élastique améliorées. La nouvelle composition de Ti-6Al-4V de la présente invention est obtenue en modifiant les limites de la composition de l'alliage à 5,5 à 6,75 % de Al, 3,5 à 4,5 de V, 0,20 à 0,30 % de O2 , une teneur en Fe inférieure à 0,50 % et une teneur inférieure à 0,50 % d'autres impuretés inévitables, et en chauffant la composition d'alliage à des températures dans le domaine de la phase bêta pour un traitement ultérieur. The present invention provides a new composition of Ti-6Al-4V alloys which has improved tensile strength and elastic limit properties. The new composition of Ti-6Al-4V of the present invention is obtained by modifying the limits of the composition of the alloy to 5.5 to 6.75% of Al, 3.5 to 4.5 of V, 0, 20 to 0.30% O2, an Fe content of less than 0.50% and a content of less than 0.50% of other unavoidable impurities, and by heating the alloy composition to temperatures in the range of beta phase for further processing.

Alpha-titanium alloy

Patent FR2225641A1

Corrosion Resistant Titanium Preparation Process

REMOVAL OF TITANIUM MOLDING OXIDE LAYERS BY USE OF ALKALINE-EARTH DEOXIDATION AGENT.

Ce procédé a pour but de ramener la teneur en oxygène et/ou en oxyde des couches formées à la surface d'un moulage métallique au cours du moulage à des concentrations sensiblement égales ou inférieures à celles trouvées à l'intérieur du moulage. Selon l'invention, ce procédé comprend: a) la mise en contact du moulage métallique avec un désoxydant métallique dans une atmosphère inerte séche, à une température élevée suffisante pour au moins vaporiser le désoxydant métallique, et le maintien du contact du désoxydant vaporisé avec la surface dudit moulage jusqu'à ce que l'oxyde et/ou l'oxygène de la surface soient réduit pour atteindre sensiblement la concentration correspondante à l'intérieur du moulage; et b) le lavage à l'acide du moulage pour éliminer l'oxyde à la surface du moulage. The purpose of this process is to reduce the oxygen and / or oxide content of the layers formed on the surface of a metal casting during the molding to concentrations substantially equal to or lower than those found inside the casting. According to the invention, this process comprises: a) bringing the metal casting into contact with a metal deoxidizer in a dry inert atmosphere, at a high temperature sufficient to at least vaporize the metal deoxidizer, and maintaining contact of the vaporized deoxidizer with the surface of said molding until the oxide and / or oxygen of the surface is reduced to substantially reach the corresponding concentration within the molding; and b) acid washing the casting to remove oxide from the surface of the casting.

Method and apparatus for temperture control in a continuous casting furnace

Piling and pulling device

Continuous casting of reactionary metals using a glass covering

一种用于连续铸造炉(12)的密封件(10)，该铸造炉(12)包括带有模具(20)的熔化室(16)，其用于生产金属铸件，所述密封件包括介于熔化室和外部大气(44)之间的通道(48)。当铸件移动通过通道时，铸件的外表面和通道的内表面之间限定用于容纳液体玻璃或其它熔融材料的储存部(62)，用以防止外部大气进入到熔化室中。被供送到储存部中的粒状材料在来自于铸件热量的作用下熔化以形成熔融材料。当铸件移动穿过通道时所述熔融材料涂覆在铸件上并凝固，从而形成涂层以保护热的铸件使之不与外部大气发生反应。

Patent FR2007760A1

IMPROVEMENT OF HOT WORK SUITABILITY BY USE OF COATING DEPOSITED BY THERMAL SPRAYING.

La présente invention se rapporte à un procédé dans lequel un métal ou alliage métallique est déposé par projection thermique sur un alliage de base avant le travail à chaud de ce dernier. Plus précisément, l'invention se rapporte à l'utilisation d'un revêtement de titane déposé au plasma sur une plaque d'alliage de titane pour améliorer l'aptitude au travail à chaud. Cette combinaison permet de laminer l'alliage de base sensible à la formation de criques avec un minimum de criques de surface et de bord. En outre, en utilisant un revêtement de titane projeté au plasma, on observe une réduction de la force de laminage qui est nécessaire pour réduire l'épaisseur de la matière pendant l'opération de travail à chaud. The present invention relates to a process in which a metal or metal alloy is deposited by thermal spraying on a base alloy before the latter is hot worked. More specifically, the invention relates to the use of a coating of titanium plasma deposited on a plate of titanium alloy for improving hot workability. This combination allows the cracking sensitive base alloy to be rolled with minimal surface and edge cracking. Further, by using a plasma sprayed titanium coating, there is observed a reduction in the rolling force which is required to reduce the thickness of the material during the hot working operation.

Enhancement of hot workability by use of thermal spray coatings

Purification of zirconium tetrahalide

Method of rolling titanium sheets

740,408. Making plates and sheets. MALLORY-SHARON TITANIUM CORPORATION. June 24, 1953, No. 17483/53. Classes 83 (2) and 83 (4). Rolling; working at specified temperatures.- In a method of hot rolling titanium to thin gauge sheets, rectangular ingots are rolled to sheets of intermediate gauge which are then sandwiched between sheets of metal such as steel having a lower heat conductivity than titanium to retain the heat and protect the titanium surfaces against oxidation during rolling to the final thickness. In examples round ingots at a temperature of 1700‹ to 1850‹ F. are described and flattened into rectangular slabs in successive forging stages. The slabs are then reduced by rolling in a number of stages after heating and reheating in continuous furnaces under a reducing atmosphere initially to temperatures of 1520‹ to 1580‹ F. and at later stages to a temperature of 1350‹ F. followed in some cases by doubling and redoubling of the sheet. In one example four sheet thicknesses resulting from doubling and redoubling are sandwiched between two sheets of steel, heated to 1350‹ F. rolled in two stages, hot doubled, reheated and given final rolling passes until the sheets are reduced to a thickness of 0.013-0.014 inches. The resultant eight-titanium sheets are then separated. The finished sheets after annealing and pickling may be cold-rolled to as much as 50 per cent reduction.

Continuous casting of reactionary metals using a glass covering

Wrought titanium and titanium alloy products

The impact resistance and resistance to corrosion of wrought titanium and titanium-base alloy products is increased by reducing the hydrogen content to 6-20 p.p.m. Titanium-base alloys containing (1) Al 1.3%, V 8%, Fe 5%, O2 0.4%; (2) Al 6%, V 4%; (3) Al 4%, Mn 4%, and having the above low hydrogen content are referred to in the Specification. Alloy (1) may be annealed by heating to 1250 DEG F. for 1 hour, furnace cooling to 900 DEG F. and then air cooling. It may be hardened by heating to 1375-1400 DEG F. for 1 hour, water quenching and ageing at 1000 DEG F. for 2 hours or 900 DEG F. for 4 hours.

Patent FR2091242A5

Methods of melting titanium and other metals and alloys by plasma arc or electron beam

Titanium welding electrode

A titanium welding electrode which consists of a titanium rod, an oxidation-resistant metal coating on the rod, and an arcstabilizing additive. The additive is a metal of the group which consists of barium, strontium, cerium and yttrium. Preferably the additive is incorporated in the coating metal, but alternatively may be incorporated in the titanium rod. The invention is an improvement over the electrode covered in U.S. Pat. No. 3,574,678, in which the arc-stabilizing material is applied as a separate coating.

Continuous casting of reactionary metals using a glass covering

A seal for a continuous casting furnace having a melting chamber with a mold therein for producing a metal cast includes a passage between the melting chamber and external atmosphere. As the cast moves through the passage, the cast outer surface and the passage inner surface define therebetween a reservoir for containing liquid glass or other molten material to prevent the external atmosphere from entering the melting chamber. Particulate material fed into the reservoir is melted by heat from the cast to form the molten material. The molten material coats the cast as it moves through the passage and solidifies to form a coating to protect the hot cast from reacting with the external atmosphere. Preferably, the mold has an inner surface with a cross-sectional shape to define a cross-sectional shape of the cast outer surface whereby these cross-sectional shapes are substantially the same as a cross-sectional shape of the passage inner surface.

Electrode and method of improving soundness of ingots

Method of forging elongated metal shapes from ingots and resulting product

A method of forging an elongated metal shape from an ingot. First the ingot is pressed in the direction of its central axis. Next the partially forged shape is pressed in a direction perpendicular to its central axis to elongate it in a direction at right angles both to the new direction of pressing and to the original axis. The piece then is pressed repeatedly in at least two directions both at right angles to its direction of elongation to produce a shape, the lengthwise axis of which is perpendicular to the original central axis of the ingot.

Titanium alloys

Method and apparatus for warm-rolling metal strip

A METHOD AND APPARATUS FOR WARM-ROLLING METAL STRIP AT AN INTERMEDIATE TEMPERATURE OF ABOUT 300 TO 1400 F. THE STRIP IS CONTACTED ELECTRICALLY AT OPPOSITE SIDES OF A ROLL STAND, AND THUS HEATED BY ELECTRIC RESISTANCE. TEMPERATURE IS SENSED NEAR THE ENTRY SIDE OF ROLL STAND AND USED TO CONTROL CURRENT INPUT TO STRIP TO MAINTAIN THE PROPER TEMPERATURE.

Balanced titanium alloy

Alloys of titanium containing iron and vandium

Titanium alloys

Method and apparatus for preheating and feeding material

A casting furnace for preheating and melting solid feed material includes a melting chamber with a melting hearth therein and a feed chamber in fluid communication with the melting chamber for conveying the solid material into the melting chamber. A heat source melts the feed material within the melting hearth and produces surplus heat used to preheat the solid feed material. Preferably, gas is heated by the heat source and moved into the feed chamber to preheat the feed material while it is conveyed toward the melting hearth. The heated gas is recycled back into the melting chamber to be re-heated therein and reused to preheat additional feed material in the feed chamber. Where the heat source in the melting chamber includes a plasma torch, the gas is recycled via the plasma torch, which ionizes the gas to create a plasma plume for melting the solid material.

Continuous casting of reactionary metals using a glass covering

A seal for a continuous casting furnace having a melting chamber with a mold therein for producing a metal cast includes a passage between the melting chamber and external atmosphere. As the cast moves through the passage, the cast outer surface and the passage inner surface define therebetween a reservoir for containing liquid glass or other molten material to prevent the external atmosphere from entering the melting chamber. Particulate material fed into the reservoir is melted by heat from the cast to form the molten material. The molten material coats the cast as it moves through the passage and solidifies to form a coating to protect the hot cast from reacting with the external atmosphere. Preferably, the mold has an inner surface with a cross-sectional shape to define a cross-sectional shape of the cast outer surface whereby these cross-sectional shapes are substantially the same as a cross-sectional shape of the passage inner surface.

Method of making crevice-corrosion resistant titanium

Titanium base alpha aluminum-columbium-tantalum alloy

Method of processing Metastable Beta Titanium Alloy

1,187,213. Working at specified temperatures. REACTIVE METALS Inc. 10 July, 1967 [8 July, 1966], No. 31714/67. Heading B3V. [Also in Division C7] An alloy containing in percentage by weight Al 0À8-1À8 V 7À5-8À5 Fe 4À5-5À5 O 0À5 Ti balance is hot worked under such conditions that final working is completed at a temperature above the beta transition temperature, e.g. at 1700‹ F. The alloy is preferably then solution treated at 1350-1500‹ F., water quenched and aged at 900-1050‹ F. In a modified process, the alloy is cold worked and annealed after hot working, annealing preferably being effected in the range 1250-1500‹ F., followed by air or furnace cooling. Use of the alloys for fasteners in the aircraft industry is referred to.

Consumable electrode arc furnace construction and operation

Titanium-vanadium-aluminum alloys

Apparatus for producing a molten seal in a continuous casting furnace

A seal for a continuous casting furnace having a melting chamber with a mold therein for producing a metal cast includes a passage between the melting chamber and external atmosphere. As the cast moves through the passage, the cast outer surface and the passage inner surface define therebetween a reservoir for containing liquid glass or other molten material to prevent the external atmosphere from entering the melting chamber. Particulate material fed into the reservoir is melted by heat from the cast to form the molten material. The molten material coats the cast as it moves through the passage and solidifies to form a coating to protect the hot cast from reacting with the external atmosphere. Preferably, the mold has an inner surface with a cross-sectional shape to define a cross-sectional shape of the cast outer surface whereby these cross-sectional shapes are substantially the same as a cross-sectional shape of the passage inner surface.

Electrode holder construction

Titanlegierung

锅把柄

锅把柄(1)包括一个把握部分(4)和连接部件 (5)，连接部件用来连接所说的把握部分(4)和锅(2) 的容器体(3)。把握部分(4)沿锅(2)的整个周边延 伸。这样的把柄(1)也可以用于滤锅，当食物欲在所 说的锅中蒸煮时，该滤锅的形式适于直接放入锅(2) 的内部。

Titanium alloys with low hydrogen content

Perfezionamento nelle leghe a base di titanio ausnational distillers and chemical corp

Alpha titanium alloys

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Titanium electrode

Alloys of titanium with chronium and aluminum

Recovery of titanium fines and manufacture of electrodes therefrom

Hydraulische Biegepresse für Baueisen, insbesondere Spundbohlen und Kanaldielen

Produit en tôle d'alliage à base de titane

Alliage à base de titane

Process for melting and casting ruthenium-containing or iridium-containing titanium alloys

An improved process for successful and homogeneous incorporation of ruthenium and iridium into titanium and titanium alloy melts, ingots, and castings via traditional melting processes (e.g., VAR and cold-hearth) has been developed. This result is achieved through the use of low-melting point Ti-Ru or Ti-Ir binary master alloys within the general composition range of ≦45 wt. % Ru and with a preferred composition of Ti-(15-40 wt. % Ru), or within the general composition range of ≦61 wt. % Ir and with a preferred composition of TI-(20-58 wt. % Ir). Primary features are its lower melting point than pure titanium, lower density than pure Ru and Ir metals, and the ability to be readily processed into granular or powder forms.

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Preparation of heat treatable titanium alloys

Controlled consumable electrode arc melting furnace construction and operation