The result of tests shows that molten pool is stable during welding, high quality penetration in root easily obtains and both sides of weld melts well to form good weld.

• 试验结果表明，焊接过程熔池稳定，易在根部产生高质量熔深，焊逢两侧熔合良好，可形成高质量的焊缝。