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Title:
ELECTRIC RESISTANCE WELDED STEEL PIPE MANUFACTURING DEVICE AND ELECTRIC RESISTANCE WELDED STEEL PIPE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/142359
Kind Code:
A1
Abstract:
An electric resistance welded steel pipe manufacturing device, which performs welding while supplying a plasma flow to a pair of abutting end surfaces to shield the same while forming a band shaped steel plate into a pipe shape, is provided with a mandrel and a plasma flow supply device provided on the mandrel for supplying the plasma flow.

Inventors:
WATANABE Kotaro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
HAMATANI Hideki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
WATANABE Fuminori (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
TANAKA Kimiharu (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
TAKEDA Yusuke (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
TOMONAGA Yuya (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
HASHIMOTO Yoshihiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
HAYASHI Masahide (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
Application Number:
JP2018/001788
Publication Date:
July 25, 2019
Filing Date:
January 22, 2018
Export Citation:
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Assignee:
NIPPON STEEL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
International Classes:
B23K13/06; B21C37/08; B23K13/00
Attorney, Agent or Firm:
TANAI Sumio et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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