| 摘要 |
PURPOSE:To enable to set quickly and accurately proper welding conditions and to perform the welding of the necessary grade at the highest speed by setting the optimal high speed welding conditions with increasing gradually the welding speed and welding current in case of the arithmetic result being within a adequate range. CONSTITUTION:A welding is started by performing the initial stage setting of the welding voltage V, welding current I, wire feeding speed Ff and welding speed Fw at a step 30. The check of the current and voltage is performed at a step 31, a correction processing is performed at a step 32 in case of being not proper and in the proper case the operation of Ff/Fw is performed at a step 33. Then whether the input heat quantity and deposit quantity operated as a step 34 can satisfy the necessary welding grade is judged and in case of excess deposit quantity the welding speed Fw is gradually increased and the welding current I is gradually reduced in case of excess input heat quantity. These processes are performed as a step 35. In case of the range that the prescribed proper welding grade is obtainable it becomes an output command OUT but simultaneously the gradually increasing process of the welding speed Fw and welding current I are performed at a step 36 and the welding conditions are automatically converged and optimized to the optimal high speed welding conditions.
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