发明公开
- 专利标题： WELDED METAL WITH EXCELLENT RESISTANCE TO HYDROGEN EMBRITTLEMENT, AND SOLID WIRE FOR SUBMERGED ARC WELDING
- 专利标题（中）： WITH为氢和全线速优异的耐埋弧焊焊接的金属
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申请号： EP14738291.5申请日： 2014-01-10
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公开(公告)号： EP2944417A1公开(公告)日： 2015-11-18
- 发明人: NAKO Hidenori , KOCHI Takuya , URUSHIHARA Wataru , KAWASAKI Hiroyuki , HAN Peng , KITAGAWA Yoshihiko
- 申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- 申请人地址： 2-4, Wakinohama-Kaigandori 2-chome Chuo-ku Kobe-shi, Hyogo 651-8585 JP
- 专利权人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- 当前专利权人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- 当前专利权人地址： 2-4, Wakinohama-Kaigandori 2-chome Chuo-ku Kobe-shi, Hyogo 651-8585 JP
- 代理机构： Müller-Boré & Partner Patentanwälte PartG mbB
- 优先权： JP2013004074 20130111; JP2013226438 20131031
- 国际公布： WO2014109402 20140717
- 主分类号： B23K35/30
- IPC分类号： B23K35/30 ; C22C38/58
摘要：
The weld metal of the present invention has a given chemical composition, contains retained austenite particles in an amount of 2,500 grains/mm 2 or more, and has a volume fraction of the retained austenite particles of 4.3 vol% or more and a content ratio of Cr and Mn, [Cr]/[Mn], of 0.20 or more. The weld metal has excellent resistance to hydrogen embrittlement even when the weld metal has a high tensile strength of more than 780 MPa.
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