| 摘要 |
<p>The present invention relates to a welding machine which is capable of minimizing the whole volume thereof such that the welding machine gently move along the outer peripheral surface of a pipe having a relatively small diameter, and thus easily performing a welding operation. The welding machine of the present invention includes a body mounted and fixed on a pipe; a carriage mounted on the body in such a manner as to be able to rotate along the outer peripheral surface of the pipe; a weaving part disposed on the carriage in such a manner as to be able to move in the lengthwise direction of the pipe; and a torch part disposed on the weaving part to adjust a distance from a welding portion of the pipe, having a welding wire supplied from the top portion of a welding torch, and doubly ejecting gas emitted through a welding head toward the center of the welding portion and toward the center from the outside of the center of the welding portion. Accordingly, the welding operation for the pipe can be conveniently conducted in a small space.</p> |
