发明申请
- 专利标题： STEEL PART AND METHOD OF MANUFACTURING THE SAME
- 专利标题（中）： 钢件及其制造方法
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申请号： US15124453申请日： 2015-03-11
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公开(公告)号： US20170016083A1公开(公告)日： 2017-01-19
- 发明人: Kenji Matsumoto
- 申请人： HONDA MOTOR CO., LTD.
- 申请人地址： JP Tokyo
- 专利权人： HONDA MOTOR CO., LTD.
- 当前专利权人： HONDA MOTOR CO., LTD.
- 当前专利权人地址： JP Tokyo
- 优先权： JP2014-047388 20140311
- 国际申请： PCT/JP2015/057131 WO 20150311
- 主分类号： C21D9/32
- IPC分类号： C21D9/32 ; C23C8/80 ; C21D1/06 ; C23C8/32 ; C21D7/06
摘要：
A surface of a steel material cut to a desired shape and carbonitrided is heated by excitation and thereafter repeatedly heated/cooled a predetermined number of times, such that an ultrafine crystal layer is formed immediately under the surface of the steel material and at least a predetermined number of cracks are formed under the formed ultrafine crystal layer, thereby enabling to increase toughness of the surface or immediately thereunder and enhance tenacity and inhibiting growth of cracks.
公开/授权文献
- US10053747B2 Steel part and method of manufacturing the same 公开/授权日：2018-08-21
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