发明授权
- 专利标题： Method and apparatus for controlling the atmosphere in a heat treatment furnace
- 专利标题（中）： 用于控制热处理炉中的气氛的方法和装置
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申请号： US24543申请日： 1998-02-17
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公开(公告)号： US6106636A公开(公告)日： 2000-08-22
- 发明人: Takeshi Naito , Kouichi Ogihara , Akihiro Wakatsuki , Tadanori Nakahiro , Hideki Inoue , Yoshio Nakashima
- 申请人： Takeshi Naito , Kouichi Ogihara , Akihiro Wakatsuki , Tadanori Nakahiro , Hideki Inoue , Yoshio Nakashima
- 申请人地址： JPX Tokyo
- 专利权人： Dowa Mining Co., Ltd.
- 当前专利权人： Dowa Mining Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX9-048598 19970218
- 主分类号： C21D1/76
- IPC分类号： C21D1/76 ; C23C8/20 ; C23C8/30 ; C23C8/22 ; C21D1/06
摘要：
In a method of and apparatus for controlling an atmosphere in a heat treatment furnace according to the present invention, a carburizing is carried out while supplying a hydrocarbon series gas and an oxidization gas into the furnace. The quantity of a residual CH.sub.4, a partial pressure of the oxidization gas and a partial pressure of CO are measured. The quantity of each gas to be supplied into the furnace is controlled according to either one of the values of the partial pressures.
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