304 stainless steel bar welding is not firmly what is the reason?
There are several main reasons for the welding failure:1, the choice of welding rod is wrong.2, no groove, or the current is too low, the melt depth is not enough.3, the room temperature is too low, leading to excessive cooling rate, internal stress is too large to produce cracks.
1, check whether the electrode material and the material of parent material are consistent.2, according to the thickness of the weld out the appropriate gap, the current selection to meet the welding process requirements.3, to improve the indoor temperature of welding, or to do corresponding thermal insulation measures after welding.
