发明授权
US4726840A Method for the electroslag refining of metals, especially those having
alloy components with an affinity for oxygen
失效
金属电渣精炼方法,特别是那些具有对氧气具有亲和力的合金成分的方法
- 专利标题: Method for the electroslag refining of metals, especially those having alloy components with an affinity for oxygen
- 专利标题(中): 金属电渣精炼方法,特别是那些具有对氧气具有亲和力的合金成分的方法
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申请号: US896937申请日: 1986-08-15
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公开(公告)号: US4726840A公开(公告)日: 1988-02-23
- 发明人: Alok Choudhury , Felix Muller , Gerhard Bruckmann
- 申请人: Alok Choudhury , Felix Muller , Gerhard Bruckmann
- 申请人地址: DEX Cologne
- 专利权人: Leybold-Heraeus GmbH
- 当前专利权人: Leybold-Heraeus GmbH
- 当前专利权人地址: DEX Cologne
- 优先权: DEX3619293 19860607
- 主分类号: C22B9/18
- IPC分类号: C22B9/18 ; C22B9/193 ; B22D27/02
摘要:
Method for the electroslag refining of metals of which at least 50 weight-percent are in the form of at least one current-carrying consumable electrode, especially one having alloy components with an affinity for oxygen, wherein the metals are remelted to an ingot through a molten bath of slag. To achieve the object of preventing oxidation, freckling, rings and white spots and at the same time produce a degassing, the following measures are undertaken: (a) the refining process is performed at a subatmospheric pressure, (b) the slag is an at least 80 weight-percent oxidic slag of oxides whose boiling points are above 2000.degree. C., and (c) the slag is heated by means of alternating current.
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