发明授权
- 专利标题: Welding structural part and welding method of the same
- 专利标题(中): 焊接结构件和焊接方法相同
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申请号: US13388239申请日: 2010-07-30
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公开(公告)号: US09498840B2公开(公告)日: 2016-11-22
- 发明人: Takahiko Kanai , Munehisa Hatta , Fumiaki Ikuta , Kazuhiro Kawasaki , Eizaburou Nakanishi , Masayuki Miyake , Kotobu Nagai , Masao Hayakawa , Takehiko Itagaki
- 申请人: Takahiko Kanai , Munehisa Hatta , Fumiaki Ikuta , Kazuhiro Kawasaki , Eizaburou Nakanishi , Masayuki Miyake , Kotobu Nagai , Masao Hayakawa , Takehiko Itagaki
- 申请人地址: JP Tokyo JP Tsukuba-shi
- 专利权人: NETUREN CO., LTD.,NATIONAL INSTITUTE FOR MATERIALS SCIENCE
- 当前专利权人: NETUREN CO., LTD.,NATIONAL INSTITUTE FOR MATERIALS SCIENCE
- 当前专利权人地址: JP Tokyo JP Tsukuba-shi
- 代理机构: Westerman, Hattori, Daniels & Adrian, LLP
- 优先权: JP2009-180134 20090731
- 国际申请: PCT/JP2010/062888 WO 20100730
- 国际公布: WO2011/013793 WO 20110203
- 主分类号: B23K9/28
- IPC分类号: B23K9/28 ; B23K11/11 ; B23K11/24 ; B23K11/26 ; B23K11/31 ; C22C38/00
摘要:
A welding structural part 1 is manufactured by overlapping the surfaces of steel sheets 2, and forming a weld zone by spot welding. The weld zone 3 includes: a weld nugget 4; and a heat affected zone 5 surrounding the weld nugget 4, wherein the hardness in the weld zone increases along an exterior region 6 of the heat affected zone 5 toward the heat affected zone 5, and then decreases along the heat affected zone 5 toward the central region of the weld nugget 4. In the boundary region between the weld nugget 4 and the heat affected zone 5, the weld nugget 4 may have a convex portion 4A bulging into the heat affected zone 5 along the overlapped portion. The steel sheets 2 contain carbon in 0.15 mass % or more.
公开/授权文献
- US20120129006A1 WELDING STRUCTURAL PART AND WELDING METHOD OF THE SAME 公开/授权日:2012-05-24