| 摘要 |
A machine for winding and welding a metal strip around a sealed exchanger tube to form a helical fin, using a welding electrode positioned in the angle between the strip and the tube surface. The tube is rotated while the strip is applied, the strip and electrode being supported on a longitudinally movable carriage. The support for the welding electrode is adjustable vertically, horizontally parallel to the axis of the tube, and also lengthwise along the axis of a sleeve pivotally attached to the support on a horizontal adjusting axis. |
