The improvement measures are as follows: 1, deformation prevention; 2. Rigid fixation; 3. Choose a reasonable welding sequence; 4. Forced heat dissipation (that is, the way you want): the heat in the welding area is dissipated by forced cooling. Specifically, you can put the weldment in water, or cover the weldment with a wet towel or directly pour the weldment with cold water to achieve the purpose of heat dissipation!