What is the influence of the cooling rate after welding on the mechanical properties of the weld?
For second types of steels which are sensitive to temper embrittlement, slow cooling can lead to slow cooling embrittlement.
When the cooling rate is too high, the welding seam will have a great internal force, which will easily cause deformation and even crack in the weld.
Welding itself generates thermal stress and tissue stress. If the cooling rate is too high, it will increase the stress and cause cracking
1 eliminate the internal stress of joints and structures and reduce the tendency to list. 2 improve the microstructure and properties of the joints
