| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a metal welded tube, which can remove a chip in a short time without using roll coolant water, and can improve the production efficiency of a metal welded tube, and to provide production equipment therefor. SOLUTION: The method for producing a metal welded tube and the equipment therefor are composed in such a manner that compressed air is stored in a pressure vessel 54, after an inner surface bead 7 formed at the weld zone of an electric-resistance-welded tube element body 5 is cut, and further, the electric-resistance-welded tube element body 5 is cut so as to be a prescribed length, a sealing valve 543 of the pressure vessel 54 is released, and the compressed air is jetted to the inside of the electric-resistance-welded tube element body 5 from a nozzle 55 connected to the pressure vessel 54, thus a chip 7a in the inner surface bead 7 left at the inside of the electric-resistance-welded tube 5 is discharged to the outside of the electric-resistance-welded tube element body 5. COPYRIGHT: (C)2011,JPO&INPIT |
