| 摘要 |
PURPOSE:To make an arc starting property satisfactory, by switching a wire feed speed at the time of arc starting, to a prescribed value in accordance with the kind of shielding gas to be used. CONSTITUTION:When welding is executed by making use of a consumable wire electrode, at the time of arc starting, a wire feed speed before an arc is generated is switched in accordance with the kind of shielding gas. Also, the wire feed speed in case when CO2 is used as a shielding gas is set to 120-300cm/ min. Also, the wire feed speed in case when Ar+CO2 is used as a shielding gas is set to 25-130cm/min. In this way, an arc starting property in case of DC are welding becomes satisfactory. |
