| 摘要 |
PURPOSE: Provided is a method for continuously manufacturing a metal tube having a longitudinal seam welding and a corrugated shape capable of achieving a high manufacturing speed by reducing the encircling mass and thereby increasing the rotational speed of the corrugation head to thereby permit a higher rate of production to be achieved. CONSTITUTION: In a process for the continuous production of longitudinally seam-welded and corrugated metal tubes(46), a metal band drawn off from a supply reel is formed into an open-seam tube, welded at its longitudinal edges, and the welded smooth tube(45) corrugated. A withdrawal apparatus driven by an electric motor engages the smooth tube. The smooth tube(45) is corrugated by means of a corrugation plate(43) located in a corrugation head(42) which can be driven rotationally. The corrugation head(42) is driven directly by a hollow shaft motor(37, 38). |
