- 专利标题: High-strength stainless steel pipe
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申请号: US14916265申请日: 2014-08-04
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公开(公告)号: US10151012B2公开(公告)日: 2018-12-11
- 发明人: Kenichiro Eguchi , Yasuhide Ishiguro , Takeshi Suzuki , Hideo Sato , Tetsu Nakahashi
- 申请人: JFE STEEL CORPORATION
- 申请人地址: JP Tokyo
- 专利权人: JFE Steel Corporation
- 当前专利权人: JFE Steel Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: RatnerPrestia
- 优先权: JP2013-183036 20130904
- 国际申请: PCT/JP2014/004056 WO 20140804
- 国际公布: WO2015/033518 WO 20150312
- 主分类号: C22C38/44
- IPC分类号: C22C38/44 ; C22C38/46 ; C22C38/48 ; C22C38/50 ; C21D9/08 ; C22C38/00 ; C22C38/58 ; C21D6/00 ; C21D9/14 ; C21D8/10 ; C22C38/40 ; C22C38/42 ; C22C38/54 ; B21B19/04 ; B21C23/00 ; B22D11/00 ; C21D1/18 ; C21D1/613 ; C22C38/02 ; C22C38/04 ; C22C38/06
摘要:
A method of manufacturing a high-strength stainless steel pipe includes forming a steel pipe having a predetermined size, the steel having a composition comprising by mass % 0.005 to 0.05% C, 0.05 to 1.0% Si, 0.2 to 1.8% Mn, 0.03% or less P, 0.005% or less S, 14 to 20% Cr, 1.5 to 10% Ni, 1 to 5% Mo, 0.5% or less V, 0.15% or less N, 0.01% or less O, 0.002 to 0.1% Al, and Fe and unavoidable impurities as a balance; applying a quenching treatment two times or more to the steel pipe where the steel pipe is quenched by reheating to a temperature of 750° C. or above and cooling to a temperature of 100° C. or below at a cooling rate equal to or higher than an air-cooling rate; and applying a tempering treatment where the steel pipe is tempered at a temperature of 700° C. or below.
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