転造ダイス及びその製造方法

Japanese Patent JP7116860

B2

Provided is a rolling die that increases the durability of a nitrided molded surface. The rolling die (1) includes a tool base material that is made of steel and has a molded surface (2) on which a plurality of working teeth (10) is formed. The tool base material includes a nitride layer (15) in which nitrogen is diffused. The nitride layer (15) is disposed to reach a position that is 20 to 70 µm in depth from the molded surface (2). The molded surface (2) has a surface hardness of at least 1100 HV. The rate of depth change from the depth (D1) of the nitride layer (15) at crests (11) of the working teeth (10) to the depth (D2) of the nitride layer (15) at roots (13) of the working teeth (10) is not higher than 30%.

JP7212100	rolling bearing
JPH09502485	INDUSTRIAL APPLICABILITY: A method for treating at least one member made of a soft magnetic material.
JP2013095966	SLIDING MEMBER, SURFACE TREATMENT METHOD OF THE SAME, AND BEARING APPARATUS AND COMPRESSOR USING THE SAME

Akiya Hisada

JP2022510250A

August 10, 2022

March 26, 2020

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OSG Co., Ltd.

C23C8/26; B21H3/06; B23G7/02; B23P15/24; C23C8/38; C23C8/80; C23C22/62; C23C28/00

JP2011036949A
JP2008138235A
JP2014221478A
JP2010005654A

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