Welding deformation and stress analysis of Q345R steel

In the metal structure, Q345R steel is very easy to produce welding stress and various deformations. Welding stress and deformation directly lead to welding cracks in Q345R steel, and it is very easy to cause thermal strain embrittlement. Welding stress and welding deformation will affect the shape and size of Q345R 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 Q345R steel is very necessary for the welding quality of the whole Q345R steel.

The main methods to reduce welding stress during welding Q345R 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.