Resulting in seven major points of mine screen open welding

1. Material welding performance is poor or different materials for welding materials: such as poor pig welding performance, stainless steel and general steel welding and so prone to desoldering.
2. Material thickness difference is also too likely to cause desoldering, one penetration, one is not melting.
3. Welding temperature is not enough, the general steel has the most suitable welding temperature, if the heating temperature is not enough, likely to cause false welding, desoldering. (The weather also has a certain impact)
4. Medium selection of improper or moisture, expired, different materials of steel, welding electrodes used, welding wire has different requirements. (Another, in the same weld on the same batch of welding wire)
5. Welding current is too large or too small, the current is too large, the rapid oxidation of the material surface; current is too small, can not penetrate.
6. The length of the weld is too long, the material produces deformation stress, tearing the weld caused by desoldering.
7. Welder technology, lack of experience or lack of dedication.