公开(公告)号：US20160032976A1

公开(公告)日：2016-02-04

申请号：US14776190

申请日：2014-01-15

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Herbert A. Chin ,  William P. Ogden ,  David A. Haluck ,  Ronald F. Spitzer

IPC: F16C33/62 ,  C22C38/52 ,  C22C38/48 ,  C22C38/44 ,  C22C38/02 ,  C22C38/50 ,  C22C38/58 ,  C22C38/46

CPC classification number: F16C33/62 ,  C21D6/002 ,  C21D9/36 ,  C21D9/40 ,  C22C38/00 ,  C22C38/02 ,  C22C38/22 ,  C22C38/24 ,  C22C38/30 ,  C22C38/38 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/58 ,  C23C8/22 ,  C23C8/26 ,  C23C8/32 ,  C23C8/38 ,  F16C19/02 ,  F16C33/32 ,  F16C2202/04 ,  F16C2204/72 ,  F16C2206/58 ,  F16C2240/18 ,  F16C2240/40 ,  F16C2240/48 ,  F16C2360/23

Abstract: A rolling element bearing includes a plurality of bearing components, which include one or more rolling elements, an inner ring and an outer ring. A first of the bearing components includes martensitic stainless steel configured with a core and a hardened case. The martensitic stainless steel of the core includes approximately 8% by weight or more chromium. The martensitic stainless steel of the hardened case has a grain size that is substantially equal to or finer than ASTM grain size #7. The martensitic stainless steel of the hardened case includes approximately 6% by weight or more chromium, and carbon. Molecules that include the carbon are substantially uniformly dispersed within the hardened case.

Abstract translation: 滚动体轴承包括多个轴承部件，其包括一个或多个滚动元件，内圈和外圈。 第一个轴承部件包括配置有芯和硬化壳体的马氏体不锈钢。 核心的马氏体不锈钢包括约8重量％或更多的铬。 硬化壳的马氏体不锈钢的晶粒尺寸基本上等于或小于ASTM晶粒尺寸＃7。 硬化壳的马氏体不锈钢包括大约6重量％或更多的铬和碳。 包含碳的分子基本均匀地分散在硬化的壳体内。