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公开(公告)号:EP3556485B1
公开(公告)日:2023-10-18
申请号:EP17882130.2
申请日:2017-12-13
发明人: ZHOU, Jun , ZHANG, Yongliang , YANG, Jianming , YANG, Minjun
IPC分类号: B21H3/04
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公开(公告)号:EP3308874B1
公开(公告)日:2023-08-23
申请号:EP16806858.3
申请日:2016-06-08
发明人: ZHANG, Yongliang , YANG, Jianming , YANG, Minjun
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公开(公告)号:EP3974076B1
公开(公告)日:2023-03-08
申请号:EP21166602.9
申请日:2021-04-01
发明人: WANG, Guofei
IPC分类号: B21C37/29 , B21H3/02 , B23K26/00 , B23K26/282 , B23K26/30 , B23K26/38 , B23K28/02 , B21K21/12 , B21D26/033 , B21D26/037 , B21D41/04 , B23P15/00 , F16L41/00
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公开(公告)号:EP4094872A1
公开(公告)日:2022-11-30
申请号:EP20926385.4
申请日:2020-03-26
申请人: OSG Corporation
发明人: HISADA, Teruya
摘要: 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%.
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公开(公告)号:EP3445513B1
公开(公告)日:2022-11-30
申请号:EP17711154.9
申请日:2017-03-16
发明人: HETTICH, Ulrich , HETTICH, Stefan
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公开(公告)号:EP3763458B1
公开(公告)日:2022-09-07
申请号:EP20188622.3
申请日:2015-07-07
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公开(公告)号:EP4045740A1
公开(公告)日:2022-08-24
申请号:EP20792555.3
申请日:2020-10-06
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