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Title:
転がり摺動部材およびその製造方法
Document Type and Number:
Japanese Patent JP5392099
Kind Code:
B2
Abstract:

To provide a rolling sliding member and a method of manufacturing the same, capable of securing the service life equal to or more than a conventional rolling sliding member made of bearing steel, by using an inexpensive material.

After heating a raw section 13 provided from a steel material including carbon of 0.1-0.5 mass%, silicon of 0.1-0.4 mass%, a manganese of 0 mass%-0.9 mass% and chrome of 0 mass%-0.2 mass% and having a residual part of iron and an unavoidable impurity at 880-920°C in a carbonitriding atmosphere of a residual ammonia quantity of 1-1.4 vol% in a carbon potential of 0.9-1.3, the raw section 13 is heated and tempered at 800-840°C, and polishing processing and shot peening processing are applied to a provided intermediate raw material. Thus, a residual austenite quantity in a depth position of 10 μm from a surface of a raceway surface 11a is set to 25-35%, and residual compressive stress in a depth position of at least 100 μm from the surface of the raceway surface 11a is set to 600 MPa or more.

COPYRIGHT: (C)2011,JPO&INPIT


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Inventors:
Hisato Nishisaka
Application Number:
JP2010002216A
Publication Date:
January 22, 2014
Filing Date:
January 07, 2010
Export Citation:
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Assignee:
JTEKT Corporation
International Classes:
F16C33/64; B24C1/10; C21D1/06; C21D7/06; C21D9/40; C22C38/00; C22C38/18; F16C33/62
Domestic Patent References:
JP2007284723A
JP2009236146A
JP2006200627A
JP2007100126A
JP2009228828A
JP2005226714A
JP2003013959A
Attorney, Agent or Firm:
Patent Business Corporation Suncrest International Patent Office



 
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