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公开(公告)号：EP4056312A1
公开(公告)日：2022-09-14
申请号：EP20885665.8
申请日：2020-11-09
发明人： WATANABE, Kotaro
IPC分类号： B23K35/368 , B23K9/16
摘要： A flux-cored wire of the present disclosure has a steel sheath and a flux filled at an inside of the steel sheath, has a total amount of moisture by ratio with respect to a total wire mass of 300 ppm or less, has flux containing fluorides, and has an amount of the fluorides by ratio with respect to the total wire mass of, by total of values converted to F, 0.11 mass% or more and 2.50 mass% or less. If using the flux-cored wire of the present disclosure for welding, a stable weld shape can be obtained and, further, the amount of diffusible hydrogen of the weld metal can be reduced. For this reason, the flux-cored wire of the present disclosure can be suitably used for welding high strength steel such as ferrite steel.
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2.发明公开
公开(公告)号：EP3744466A1
公开(公告)日：2020-12-02
申请号：EP18901019.2
申请日：2018-01-22
发明人： WATANABE, Kotaro , HAMATANI, Hideki , WATANABE, Fuminori , TANAKA, Kimiharu , TAKEDA, Yusuke , TOMONAGA, Yuya , HASHIMOTO, Yoshihiro , HAYASHI, Masahide
摘要： What is provided is an electric resistance welded steel pipe manufacturing device that is configured to perform welding while forming a strip-shaped steel sheet in a tubular shape and supplying a plasma flow to a pair of abutment end surfaces to perform shielding. The electric resistance welded steel pipe manufacturing device includes a mandrel; and a plasma flow feeder that is provided in the mandrel to supply the plasma flow.
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