Welding deformation and stress analysis of A516Gr70 steel

In the metal structure, A516Gr70 steel is very easy to produce welding stress and various deformations. Welding stress and deformation directly lead to welding cracks in A516Gr70 steel, and it is very easy to cause thermal strain embrittlement. Welding stress and welding deformation will affect the shape and size of A516Gr70 steel, which requires a lot of rectification work to change these imperfections. The rectification work is time-consuming and laborious, and the cost is high. If it is not handled properly, new problems will arise, so controlling and avoiding the occurrence of welding stress of A516Gr70 steel is very necessary for the welding quality of the whole A516Gr70 steel.

The main methods to reduce welding stress during welding A516Gr70 steel are:
1. Avoid excessive concentration of welds, and keep enough distance between welds.
2. Try to avoid the welds with three-axis intersection, and the welds should not be arranged in the area with the highest working stress.