[특허]Electroslag refining or titanium to achieve low nitrogen

Electroslag refining or titanium to achieve low nitrogen 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C21C-001/00
출원번호	US-0969900 (1992-11-02)
발명자 / 주소	Benz Mark G. (Burnt Hills NY) Sawyer Thomas F. (Stillwater NY)
출원인 / 주소	General Electric Company (Schenectady NY 02)
인용정보	피인용 횟수 : 33 인용 특허 : 0

초록 ▼

A method for the electroslag refining of titanium base alloy is provided. The method involves providing a refining vessel to contain an electroslag refining layer floating on a layer of molten refined metal. An ingot of unrefined titanium base alloy having a higher nitrogen content is lowered into the vessel into contact with the molten electroslag layer. A refining current is passed through the slag layer to the ingot to cause surface melting at the interface between the ingot and the electroslag layer. As the ingot is surface melted at its point of contact with the slag, droplets of the unrefined metal are formed and these droplets are refined as they pass down through the slag and are collected in a body of molten refined metal beneath the slag. The refined metal is held within a cold hearth. At the bottom of the cold hearth, a cold finger orifice is provided to permit the withdrawal of refined metal from the cold hearth apparatus. The refined metal passes from the cold finger orifice as a stream and may be processed into a sound metal structure having low nitrogen content and desired grain structure.

대표청구항 ▼

Apparatus for producing refined titanium base alloy containing a low concentration of nitrogen which comprises: electroslag refining apparatus comprising a refining vessel adapted to receive and to hold a molten slag, a body of molten slag in said vessel adapted to the electroslag refining of titanium base metal, means for positioning an ingot of a titanium base alloy as an electrode in said vessel in touching contact with said molten slag, electric supply means adapted to supply refining current to said ingot electrode and through said molten slag to a body of refined metal beneath said slag to keep said refining slag molten and to melt the end of said ingot electrode which is in contact with said slag, means for maintaining a low partial pressure of nitrogen in contact with the surface of said molten slag and in contact with the portion of said ingot electrode in contact with said slag, means for advancing said ingot electrode toward and into contact with said molten slag at a rate corresponding to the rate at which the contacted surface of said ingot electrode is melted as the refining thereof proceeds, a cold hearth vessel beneath said electroslag refining apparatus, said cold hearth being adapted to receive and to hold electroslag refined molten titanium base alloy in contact with a solid skull of said refined alloy formed on the walls of said cold hearth vessel, a body of refined molten titanium base alloy in said vessel beneath said body of molten slag, a cold finger apparatus below said cold hearth adapted to receive and to dispense as a stream refined molten titanium base alloy processed through said electroslag refining process and through said cold hearth, said cold finger apparatus having a bottom pour orifice, a skull of solidified refined titanium base alloy in contact with said cold hearth and said cold finger apparatus including said bottom pour orifice, and means for converting the stream of molten metal passing from said bottom pour orifice into an article of refined titanium base alloy having a low concentration of nitrogen.

이 특허를 인용한 특허 (33)

Forbes Jones, Robin M.; Kennedy, Richard L., Apparatus and method for clean, rapidly solidified alloys.
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Forbes Jones, Robin M.; Kennedy, Richard L., Apparatus and method for clean, rapidly solidified alloys.
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Forbes Jones, Robin M.; Kennedy, Richard L., Apparatus and method for clean, rapidly solidified alloys.
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Forbes Jones, Robin M.; Kennedy, Richard L., Apparatus and method for clean, rapidly solidified alloys.
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Forbes Jones, Robin M.; Kennedy, Richard L., Apparatus and method for clean, rapidly solidified alloys.
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Forbes Jones, Robin M.; Kennedy, Richard L., Apparatus and method for clean, rapidly solidified alloys.
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Forbes Jones, Robin M.; Shaffer, Sterry A., Casting apparatus and method.
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Forbes Jones, Robin M.; Shaffer, Sterry A., Casting apparatus and method.
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Forbes Jones, Robin M.; Shaffer, Sterry A., Casting apparatus and method.
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Carter ; Jr. William Thomas ; Benz Mark Gilbert ; Zabala Robert John ; Knudsen Bruce Alan ; Thamboo Samuel Vinod, Clean melt nucleated cast article.
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Carter ; Jr. William Thomas ; Zabala Robert John ; Knudsen Bruce Alan ; Hart ; Jr. Howard Roscoe ; Benz Mark Gilbert, Electroslag apparatus and guide.
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Knudsen Bruce Alan ; Frischmann Peter George ; Zabala Robert John ; Benz Mark Gilbert ; Carter ; Jr. William Thomas, Electroslag refining hearth.
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Zabala Robert John ; Knudsen Bruce Alan ; Carter ; Jr. William Thomas ; Benz Mark Gilbert, Electroslag refining starter.
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Hawley James M., Electrostatic three dimensional printer.
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Benz, Mark Gilbert; Carter, Jr., William Thomas; Zabala, Robert John; Knudsen, Bruce Alan, In situ electroslag refining hot start.
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Forbes Jones, Robin M., Ion plasma electron emitters for a melting furnace.
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Withers, James C.; Loutfy, Raouf O., Low cost processing to produce spherical titanium and titanium alloy powder.
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Forbes Jones, Robin M.; Kennedy, Richard L., Melting furnace including wire-discharge ion plasma electron emitter.
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Forbes Jones, Robin M.; Kennedy, Richard L., Melting furnace including wire-discharge ion plasma electron emitter.
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Kusamichi Tatsuhiko,JPX ; Sakamoto Koichi,JPX ; Ishida Hitoshi,JPX ; Ninagawa Shingo,JPX ; Nagao Motohiro,JPX ; Yoshikawa Katsuyuki,JPX, Melting method using cold crucible induction melting apparatus.
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Forbes Jones, Robin M., Method and apparatus for producing large diameter superalloy ingots.
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Forbes Jones, Robin M., Method and apparatus for producing large diameter superalloy ingots.
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Carter ; Jr. William Thomas ; Benz Mark Gilbert ; Zabala Robert John ; Knudsen Bruce Alan ; Dupree Paul Leonard, Methods for controlling the superheat of the metal exiting the CIG apparatus in an electroslag refining process.
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Kennedy, Richard L.; Forbes Jones, Robin M., Processes, systems, and apparatus for forming products from atomized metals and alloys.
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Mark Gilbert Benz ; William Thomas Carter, Jr. ; Bruce Alan Knudsen ; Robert John Zabala ; Paul Leonard Dupree ; Boris Izrailevich Medovar UA; Lev Borisovich Medovar UA, Processing of electroslag refined metal.
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Shaw Lee Hugh,GBX, Production of iron or nickel-based products.
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Benz Mark Gilbert ; Zabala Robert John ; Radchenko Vladimir Nikolayevich ; Riabtsev Anatoly Danilovich,UAX ; Tarlov Oleg Vladimirovich,UAX, Reduction-melting process to form rare earth-transition metal alloys and the alloys.
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Forbes Jones,Robin M.; Kennedy,Richard L.; Minisandram,Ramesh S., Refining and casting apparatus.
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Forbes Jones, Robin M.; Kennedy, Richard L.; Minisandram, Ramesh S., Refining and casting apparatus and method.
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Forbes Jones, Robin M.; Shaffer, Sterry A., Refining and casting apparatus and method.
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Forbes Jones, Robin M.; Shaffer, Sterry A., Refining and casting apparatus and method.
상세보기
Robin M. Forbes Jones ; Richard L. Kennedy ; Ramesh S. Minisandram, Refining and casting apparatus and method.
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Carter ; Jr. William Thomas ; Benz Mark Gilbert ; Zabala Robert John ; Knudsen Bruce Alan ; Dupree Paul Leonard, Systems for controlling the superheat of the metal exiting the CIG apparatus in an electroslag refining process.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Electroslag refining or titanium to achieve low nitrogen 원문보기

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Electroslag refining or titanium to achieve low nitrogen 원문보기

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