底切焊接
... undercut weld底切焊接 undressed weld (增加焊缝)未加工焊缝 unequal fillet weld焊脚不等的角焊缝 ...
横向焊接时由于熔化金属重力的作用,会引起熔池金属下淌,从而产生咬边以及焊瘤等焊接缺陷。
In GMAW welding process, when the welding speed reaches a certain threshold, there will be onset of weld bead undercut defects.在GMAW焊接过程中,当焊接速度达到某一临界值时会出现咬边缺陷,进一步提高焊接速度就会产生驼峰焊道。
Use alternating transverse magnetic-field to control dragged arc, overcome weld undercut, and improve the appearance of weld.所以控制电弧后拖是高速焊改善焊缝成形的关键。