Invention Application
- Patent Title: Screw compressor and method of manufacturing rotor for the same
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Application No.: US10978470Application Date: 2004-11-02
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Publication No.: US20050063852A1Publication Date: 2005-03-24
- Inventor: Takeshi Hida , Masayuki Urashin , Shigekazu Nozawa , Hiroki Ohsumimoto , Hirotaka Kameya , Atsushi Watanabe
- Applicant: Takeshi Hida , Masayuki Urashin , Shigekazu Nozawa , Hiroki Ohsumimoto , Hirotaka Kameya , Atsushi Watanabe
- Priority: JP2001-378010 20011212
- Main IPC: F04C18/16
- IPC: F04C18/16 ; C21D1/20 ; C21D5/00 ; C23C8/26 ; C23C8/28 ; F04C18/08 ; F04C29/00 ; F01C21/00
Abstract:
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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