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Title:
金属ベローズの製造方法
Document Type and Number:
Japanese Patent JP4311639
Kind Code:
B2
Abstract:
A metallic bellows, composed of precipitation hardening stainless steel, includes ridge portions and valley portions formed alternately and continuously, an average grain size of 10 to 15 mu m, and compressive residual stress of not less than 500 MPa provided to at least surfaces of the ridge portions and the valleys by surface working.

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Inventors:
Hideki Okada
Application Number:
JP2003378977A
Publication Date:
August 12, 2009
Filing Date:
November 07, 2003
Export Citation:
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Assignee:
Nippon Jojo Co., Ltd.
International Classes:
B24C1/10; F16J3/04; B21D51/12; C21D7/06; C21D8/10; C21D9/08; F15B1/10; C21D6/00; C21D6/02
Domestic Patent References:
JP1184225A
JP11256282A
JP2003172449A
JP2001304412A
JP7174234A
Foreign References:
US4369074
Attorney, Agent or Firm:
Suenari Mikio



 
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