| 摘要 |
PURPOSE: A gas shield arc welding method is provided to accelerate the coagulation of molten metal and prevent bubbles from the surface of melting metal. CONSTITUTION: A gas shield arc welding method comprises the following steps. A consumable electrode is inserted into a welding pole 10mm-40mm back from a single electrode or 10mm-40mm back from the rearmost of multi electrodes, and gas shield arc welding is performed.
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