发明授权
- 专利标题： Screw compressor and method of manufacturing rotor for the same
- 专利标题（中）： 螺杆式压缩机及其制造方法相同
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申请号： US10299683申请日： 2002-11-20
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公开(公告)号： US06884049B2公开(公告)日： 2005-04-26
- 发明人: Takeshi Hida , Masayuki Urashin , Shigekazu Nozawa , Hiroki Ohsumimoto , Hirotaka Kameya , Atsushi Watanabe
- 申请人： Takeshi Hida , Masayuki Urashin , Shigekazu Nozawa , Hiroki Ohsumimoto , Hirotaka Kameya , Atsushi Watanabe
- 申请人地址： JP Tokyo
- 专利权人： Hitachi, Ltd.,
- 当前专利权人： Hitachi, Ltd.,
- 当前专利权人地址： JP Tokyo
- 代理机构： Antonelli, Terry, Stout & Kraus, LLP
- 优先权： JP2001-378010 20011212
- 主分类号： F04C18/16
- IPC分类号： F04C18/16 ; C21D1/20 ; C21D5/00 ; C23C8/26 ; C23C8/28 ; F04C18/08 ; F04C29/00 ; F01C21/00
摘要：
A screw compressor of which a female rotor is driven by a motor, and of which a male rotor is driven by the female rotor. The male or female rotor is composed of a member which is made of cast iron and is subjected to surface hardening treatment or heat treatment including quenching. The surface hardening treatment may include sulphonitriding or nitiriding treatment. In the case of subjecting the cast iron to the heat treatment, austemper treatment is applied.
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