Causes of deformation of the welding cover of the energy storage box

Does welding deformation affect fatigue life?

The detrimental impact of welding deformation on the fatigue life of the joint was investigated using ESS parameters. It was found that welding deformation further amplifies the stress concentration at the weld root. Considering the influence of welding deformation can help reduce the scatter of fatigue data points.

What causes distortion in a weld?

Distortion in a weld results from the expansion and contraction of the weld metal and adjacent base metal during the heating and cooling cycle of the welding process. Doing all welding on one side of a part will cause much more distortion than if the welds are alternated from one side to the other.

Does increased welding heat input cause more weld distortion?

This is consistent with the results of Bikash Kumar et al. , who found that in thin plate structures, increased welding heat input causes more weld distortion. Fig. 10. Deformation distribution of maximum deformation section: (a–h) X and Y direction deformation distribution, (i–j) X and Y direction deformation trend of the orthogonal scheme.

How to prevent or minimize weld distortion?

To prevent or minimize weld distortion, methods must be used both in design and during welding to overcome the effects of the heating and cooling cycle. Shrinkage cannot be prevented, but it can be controlled. Several ways can be used to minimize distortion caused by shrinkage: 1. Do not overweld

Does welding on one side cause distortion?

Doing all welding on one side of a part will cause much more distortion than if the welds are alternated from one side to the other. During this heating and cooling cycle, many factors affect shrinkage of the metal and lead to distortion, such as physical and mechanical properties that change as heat is applied.

Does reducing welding heat input reduce post-weld deformation?

Optimizing the welding parameters significantly reduces the total deformation and deformation along the X and Y axes of the concrete pump arm. This demonstrates that reducing the welding heat input can effectively reduce post-weld deformation if the weld's integrity is guaranteed.