发明名称 |
WELDED STRUCTURAL MEMBER AND WELDING METHOD |
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. |
申请公布号 |
EP2460613(A1) |
申请公布日期 |
2012.06.06 |
申请号 |
EP20100804539 |
申请日期 |
2010.07.30 |
申请人 |
NETUREN CO., LTD.;NISSAN MOTOR CO., LTD.;NATIONAL INSTITUTE FOR MATERIALS SCIENCE |
发明人 |
KANAI TAKAHIKO;HATTA MUNEHISA;IKUTA FUMIAKI;KAWASAKI KAZUHIRO;NAKANISHI EIZABUROU;MIYAKE MASAYUKI;NAGAI KOTOBU;HAYAKAWA MASAO;ITAGAKI TAKEHIKO |
分类号 |
B23K11/11;B23K11/24;C22C38/00 |
主分类号 |
B23K11/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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