How to Easily Reduce Welding Distortion and Welding Stress
When welding long cracks and surfacing layer, it is necessary to weld from one end to the other end. During welding, the weld and surfacing layer are in hot state, which can reduce the shrinkage of the weld and reduce the internal stress. When knocking, the effect is better when the welding metal temperature is 800 ℃. If the temperature drops, the knocking force will also be reduced. If the temperature is too low, it is not allowed to knock around 300 ℃ to avoid cracks, The principle of forging method is basically the same as above, but the difference is that the weldment should be heated before hammering.