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公开(公告)号：EP3354361B1
公开(公告)日：2020-10-07
申请号：EP16848420.2
申请日：2016-08-12
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公开(公告)号：EP3498388B1
公开(公告)日：2020-08-26
申请号：EP17839001.9
申请日：2017-05-10
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公开(公告)号：EP3498388A1
公开(公告)日：2019-06-19
申请号：EP17839001.9
申请日：2017-05-10
IPC分类号： B21B25/00 , B23K9/04 , B23K10/02 , B23K35/30 , C21D1/18 , C21D1/42 , C21D9/00 , C22C19/05 , C22C27/04 , C22C38/00 , C22C38/04 , C22C38/54 , C23C4/06 , C23C4/18 , B21B19/04 , C22C38/02 , C22C38/42 , C22C38/44
摘要： A piercer plug having good base-material deformation resistance is provided. A method of manufacturing a piercer plug (10) includes the steps of: preparing a plug body (1) including a tip portion (11) and a cylindrical portion (12) having a hole (121) usable to attach a bar and located rearward of the tip portion (11); forming a build-up layer (2) on the surface of the tip portion (11); and heating the plug body (1) such that the temperature of the tip portion (11) with the build-up layer (2) formed thereon is not lower than the austenite transformation temperature and the temperature of the cylindrical portion (12) is lower than the austenite transformation temperature.
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公开(公告)号：EP3767002A1
公开(公告)日：2021-01-20
申请号：EP19767149.8
申请日：2019-01-18
IPC分类号： C23C4/06 , B21B25/00 , C23C4/11 , G01N23/223 , C22C38/00 , C22C38/12 , B21B19/04 , C23C4/123 , C23C4/129 , C23C4/131 , C23C30/00
摘要： A piercer plug with increased wear resistance is provided. A piercer plug (10) includes: a plug body (11); and a sprayed coating (12) formed on the surface of the plug body (11). The sprayed coating (12) contains an iron-based alloy and oxides thereof. The chromium concentration determined by analyzing the sprayed coating (12) with X-ray fluorescence analysis is 3 to 20 mass %.
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公开(公告)号：EP3257596B1
公开(公告)日：2019-10-02
申请号：EP15881895.5
申请日：2015-11-18
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