发明授权
- 专利标题: Preventing an increase of the nitrogen content in molten steel
- 专利标题(中): 防止钢水中氮含量的增加
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申请号: US582439申请日: 1984-02-22
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公开(公告)号: US4539042A公开(公告)日: 1985-09-03
- 发明人: Hans Gruner , Arnold Pfeiffer , Heinrich-Wilhelm Rommerswinkel , Rolf Vest
- 申请人: Hans Gruner , Arnold Pfeiffer , Heinrich-Wilhelm Rommerswinkel , Rolf Vest
- 申请人地址: DEX Duesseldorf
- 专利权人: Mannesmann AG
- 当前专利权人: Mannesmann AG
- 当前专利权人地址: DEX Duesseldorf
- 优先权: DEX3306782 19830223
- 主分类号: C21C7/04
- IPC分类号: C21C7/04 ; C21C5/46 ; C21C7/00
摘要:
Following the discharge of steel from a steel producing converter, the adding and inclusion of nitrogen is impeded by surrounding the stream of pouring steel with a layer of limestone at a grain size not exceeding 5 mm. Practice has shown that the nitrogen content can well remain below a content of 0.005%.
公开/授权文献
- US5662357A Car height control apparatus 公开/授权日:1997-09-02
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