发明授权
- 专利标题: Process for heating steel powder compacts
- 专利标题(中): 钢粉末压块加工工艺
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申请号: US825470申请日: 1977-08-17
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公开(公告)号: US4153485A公开(公告)日: 1979-05-08
- 发明人: Kazuo Ogata , Seiya Furuta
- 申请人: Kazuo Ogata , Seiya Furuta
- 申请人地址: JPX Kobe
- 专利权人: Kobe Steel, Ltd.
- 当前专利权人: Kobe Steel, Ltd.
- 当前专利权人地址: JPX Kobe
- 优先权: JPX49/3942 19741228
- 主分类号: B22F1/00
- IPC分类号: B22F1/00 ; B22F3/02 ; B22F3/10 ; B22F3/17 ; C21D1/76 ; C21D3/00 ; C21D3/02 ; C21D3/04 ; C22C33/02 ; C21D1/00
摘要:
A process is provided for heating steel powder compacts in a controlled atmosphere consisting of a primary gas containing at least 80% by volume of an inert gas, and a secondary gas comprising 0.1 to 5% by volume, based on the volume of said primary gas, of a paraffinic hydrocarbon. The process makes it possible to reduce the residual oxygen concentration in the steel powder compacts, while maintaining accurate control of the carbon content.