| 摘要 |
<p>PROBLEM TO BE SOLVED: To make it possible to continue fusion bonding when fusion bonding is stopped and to avoid the increase in operation costs. SOLUTION: The supply voltage of a powder source to be supplied is detected, the fusion bonding current or fusion bonding voltage to be supplied to the heater 15 of a joint 2 is detected, When abnormality is generated in the supply voltage, the fusion bonding voltage, or the fusion current during electric fusion bonding, the progression of a fusion bonding time is interrupted, the fusion bonding amperage or the fusion bonding voltage and a fusion bonding progression time are stored, a fusion bonding stop time is measured, when the supply voltage, the fusion bonding voltage, or the fusion bonding current is restored, the stored fusion bonding progression time is reduced from a set fusion bonding time to obtain a residual fusion bonding time, the residual fusion bonding time is corrected by a correction coefficient by the fusion bonding progression time and the fusion stop time and started up to the fusion bonding amperage or the fusion bonding voltage, and the fusion bonding is continued for the corrected residual fusion bonding time. In this way, the optimum fusion bonding similar to that in the case when no interruption took place is guaranteed to continue the fusion bonding.</p> |
