公开(公告)号：WO2012166851A1

公开(公告)日：2012-12-06

申请号：PCT/US2012/040095

申请日：2012-05-31

Applicant: AKTIEBOLAGET SKF ,  UES INC. ,  MIDWEST THERMAL-VAC INC. ,  TRIVEDI, Hitesh, K. ,  OTTO, Frederick, J. ,  PIAZZA, Timothy, W. ,  MCCOY, Bryan, A. ,  BHATTACHARYA, Rabi, S.

Inventor： TRIVEDI, Hitesh, K. ,  OTTO, Frederick, J. ,  PIAZZA, Timothy, W. ,  MCCOY, Bryan, A. ,  BHATTACHARYA, Rabi, S.

IPC: C23C8/00

CPC classification number: C23C8/32 ,  C21D1/06 ,  C21D1/25 ,  C21D6/005 ,  C21D6/007 ,  C21D9/40 ,  C21D2211/008 ,  C22C5/04 ,  C22C19/03 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  C23C8/58 ,  F16C33/62 ,  F16C33/64 ,  F16C2202/04 ,  F16C2204/70 ,  F16C2240/06 ,  F16C2240/60

Abstract: A method for producing a case-hardened martensitic stainless steel article includes: providing an article comprised, at least in part, of a martensitic stainless steel, carburizing the article within a temperature range of 1625° F - 1680° F (885° C - 916° C), and then carbo-nitriding the article within a temperature range of 1575° F - 1625° F (857° C - 885° C). An article, such as a bearing ring, comprising such a case-hardened martensitic stainless steel is also disclosed.

Abstract translation: 一种硬化马氏体不锈钢制品的制造方法，其特征在于，提供至少部分由马氏体系不锈钢构成的制品，在1625°F〜1680°F（885℃〜 916℃），然后在1575°F至1625°F（857℃至885℃）的温度范围内将制品碳氮化。 还公开了一种包括这种表面硬化的马氏体不锈钢的诸如轴承环的制品。