| 摘要 |
PURPOSE:To enable automatic welding under the same condition and to improve quanlity and yield of welding in butt welding of two pipes by working the butt part into flange shpae and welding the pipes bringing them into close contact. CONSTITUTION:End parts of pipes 2, and 3 to be welded are worked to form flanges 5, and 6, and the flanges 5, and 6 are butted at the butt face 4 and welded with an automatic welding torch 1. Since the welding torch 1 can face perpendicularly to the butt face 4 of the welded part and welding condition for left and right deflection of the torch at the time of setting automatic welding head is equalized, automatic welding with high quality and high yield is made possible at high workability. |
