Argon Arc Welding Defects Causes

In the argon arc welding welding process often produces weld defects.
If the seam exist porosity, the reason is impure argon gas, pipe rupture, or have water, metal fume in the transition to molten bath. The solution is to replace the pure argon gas, check the gas line, grinding or exchange tungsten, clean up the weld well. If the weld cracks, the reason is that the welding temperature is too high or too low, penetrating is not good, we need make sure penetration, current and welding speed should be appropriate, change the position of crater. If the weld is irregular, this is because the speed of gun is uneven, wire feed speed is uneven.