To gain fine mechanical property and bead strength to raise welding efficiency and quality, only applicative welding parameters and shielding gas rate could attach to the target.

• 摘要就焊接的目的而言，正确的焊接参数组合及适当的遮护气体比例才能使母材获得良好的机械性质及焊道强度，提高焊接效率与品质。