| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electric welding device capable of performing high- quality welding work under the optimum welding conditions by performing the accurate temperature management without providing any temperature sensor and any pressure sensor. SOLUTION: The welding completion temperature data previously stored in a bar code 9 described on a joint 8 and the resistance temperature characteristic data of a heating coil 8a are read by a scanner 2, the welding completion current data is calculated from these data by a CPU 3, the current data is obtained by measuring current of the heating coil 8a in electrification by a measuring unit 4, whether the current data satisfies the welding completion current data is judged by the CPU 3, when the current data satisfies the welding completion current data, an electrification stopping signal is output to a welding power source unit 7 to stop the electrification, and therefore, optimum welding can be performed.</p> |
