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1. 发明公开

KR1020090039764A 피로 특성이 우수한 준안정 오스테나이트계 스테인리스 강대의 제조 방법 및 그 강대 无效
标题翻译：用于生产脆性奥氏体不锈钢钢带的疲劳性能和钢带的生产方法
公开(公告)号：KR1020090039764A
公开(公告)日：2009-04-22
申请号：KR1020097002877
申请日：2007-09-28
申请人： 닛코 킨조쿠 가부시키가이샤
发明人： 구로사키이쿠야
IPC分类号： C21D9/46 , C22C38/00 , H01H1/02 , H01H11/04
CPC分类号： C22C38/00 , C21D6/00 , C21D6/004 , C21D8/0236 , C21D9/46 , C21D2211/008 , H01H2201/022 , H01H2205/016 , Y02P10/212
摘要： A metastable austenitic stainless steel strip excelling in fatigue property that finds appropriate application in parts requiring repeated resilience, such as parts for use in switch portions of various electronic equipments, finding especially appropriate application in metal dome parts for switch. There is provided a process for producing a metastable austenitic stainless steel strip of 1200 MPa or greater tensile strength excelling in fatigue property, comprising performing a final cold rolling of material with an average crystal grain diameter of 5.0 mum or less so as to attain a martensite content in product thickness of 90% or below. Preferably, there is provided a process comprising sequentially performing cold rolling of material with an average crystal grain diameter of 5.0 mum or less, recrystallization-annealing aiming at an average crystal grain diameter of 5.0 mum or less and final cold rolling. Further, there are provided a metastable austenitic stainless steel strip obtained by these processes and a metal dome part for switch consisting of the stainless steel strip.
摘要翻译：一种耐疲劳性能优异的亚稳态奥氏体不锈钢带，适用于需要重复弹性的部件，例如用于各种电子设备的开关部分的部件，特别适用于金属圆顶部件用于开关。提供了一种制造1200MPa以上的亚稳奥氏体不锈钢带的方法，其具有优异的疲劳性能，包括进行平均晶粒直径为5.0μm以下的材料的最终冷轧，以获得马氏体产品含量在90％以下。优选提供一种包括依次进行平均晶粒直径为5.0μm以下的材料的冷轧，平均结晶粒径为5.0μm以下的再结晶退火和最终的冷轧的方法。此外，提供了通过这些方法获得的亚稳态奥氏体不锈钢带和由不锈钢带组成的开关用金属圆顶部。

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