| 摘要 |
PURPOSE:To weld only the heat exchanger tube to be constructed by a remote control by allowing a moving frame to self-travel along the heat exchanger tube, aligning a welding torch with a welding groove part and fixing it. CONSTITUTION:First of all, by detaching a clamp device, a moving frame 11 is opened, a heat exchanger tube to be welded is inserted so as to be inserted and held through a clearance of a tube group from the axial direction of the heat exchanger tube 12, and the heat exchanger tube is fixed by clamping the clamp device. Thereafter, by rotating a driving motor 26 of a running device, a running roller is run along the heat exchanger tube 12, and moved until a welding torch reaches the part to be welded, and fixed so that the running device does not move. Subsequently, while looking at a monitor television, preparations for starting welding are executed by repeating a fine adjustment until a tungsten electrode wire comes to the center of a groove part. Thereafter, welding is executed by generating an arc from the welding torch. Only the heat exchanger tube 12 can be welded by a remote control without cutting other part than the heat exchanger tube to be subjected to welding construction. |
