| 摘要 |
<p>An arc welding apparatus 1 welds a bracket 2 held by a welding head 6 to a pipe 3 by arc welding. A hollow tubular member 5 is provided in the bracket 2, which tubular member 5 is formed in a hollow conical shape, so that the diameter thereof increases from the bracket 2 to an open tip 10 therein. The open tip 10 of the tubular member 5 of the bracket 2 held by the welding head 6 is pulled up from a condition of being in contact with the pipe 3, an electric arc is generated between the tip of the tubular member 5 and the pipe 3 to effect melting, and the open tip 10 is pressed against the pipe 3, whereupon the bracket 2 is welded to the pipe 3.</p> |
