发明授权
- 专利标题： Process for melting down and degassing lumpy material
- 专利标题（中）： 熔化和脱泡块状材料的方法
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申请号： US896935申请日： 1986-08-15
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公开(公告)号： US4773079A公开(公告)日： 1988-09-20
- 发明人: Gerhard Bruckmann , Johann Kemmer , Felix Muller , Detley Schlebusch , Ulrich Hensgen
- 申请人： Gerhard Bruckmann , Johann Kemmer , Felix Muller , Detley Schlebusch , Ulrich Hensgen
- 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： DEX3617303 19860523
- 主分类号： B22D1/00
- IPC分类号： B22D1/00 ; C21C7/072 ; C22B9/00 ; C22B9/04 ; C22B9/05 ; F27D7/00
摘要：
Process for melting down and degassing lumpy material by means of inductive heating and under subatmospheric pressure in a melting crucible. For the purpose of shortening the duration of the process, scavenging gas and/or reaction gas is introduced into the bottom region of the melting crucible during at least 50% of the duration of the process until the material is melted down completely.
公开/授权文献
- US2069868A Microphone amplifier 公开/授权日：1937-02-09
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