发明名称 |
ELECTRIC RESISTANCE WELDED TUBE MANUFACTURING DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To efficiently remove spatter generated during welding. SOLUTION: An electroseamed steel tube P is manufactured by rounding a traveling plate bar T in a tubular shape, and pressing and welding both ends thereof by a squeeze roll 8 while heating them by an induction heating coil 6. A ferrite core 21 of substantially arc-shaped section which is located immediately below the induction heating coil 6 to increase the heating efficiency is provided on an upper surface part 25 of an impeder body 24 of an impeder 22 to be inserted in the tube P. A protective layer 29 formed of a fluoro resin is provided on the upper surface part 25 of the impeder body 24 to receive spatter c during the welding. A cooling water feed pipe 27 is embedded at a tip side thereof in a recessed groove 26 of the impeder body, discharges cooling water onto the protective layer through a passage 21a between the ferrite core 21 and the upper surface part 25, and allows the cooling water to flow in the carrying direction of the tube P before spatter powder is solidified.
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申请公布号 |
JP2002346763(A) |
申请公布日期 |
2002.12.04 |
申请号 |
JP20010150663 |
申请日期 |
2001.05.21 |
申请人 |
MITSUBISHI SHINDOH CO LTD |
发明人 |
KAZAMA TAKASHI;OZAKI KAZUNORI |
分类号 |
B21C37/08;B23K13/00;B23K13/08;B23K37/08;(IPC1-7):B23K13/00 |
主分类号 |
B21C37/08 |
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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