| 发明名称 |
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| 摘要 |
PURPOSE:To produce efficiently a titanium pipe having excellent quality by heating the edge part of an open seam titanium pipe in an inert gaseous atmosphere and subjecting said part to press welding by squeeze rolls. CONSTITUTION:Belt-like tatanium 1a'' is formed into an open seam titanium pipe 1b'' by a forming roll stand group 2'' and the edge part thereof is heated up to the welding temp. by the eddy current induced by the high-frequency current flowing in a work coil 3''. The pipe is press-welded during the passage through the squeeze rolls 4'' and is thereby made into the electric welded titanium pipe 1c''. The part to be heated at the edge of the pipe 1b'' in this case is heated and welded in an inert gaseous atmosphere formed by the inert gas supplied from a gas sealing device 5. The welded titanium pipe having the excellent welding quality and dimensional accuracy is thus produced. |
| 申请公布号 |
JPH0479753(B2) |
申请公布日期 |
1992.12.16 |
| 申请号 |
JP19840124444 |
申请日期 |
1984.06.19 |
| 申请人 |
NIPPON STEEL CORP |
发明人 |
KIMURA TSUTOMU;SUMIMOTO DAIGO;ICHIHARA HIROHISA |
| 分类号 |
B21C37/08;B21D5/12;B23K11/18;B23K13/02;B23K13/06;B23K103/14 |
主分类号 |
B21C37/08 |
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