How to solve the problem of laser weld indentation

Reasons for laser weld indentation problem
During the laser welding process, the welding area is subjected to high temperatures, which can cause deformation due to thermal expansion and contraction, resulting in a concave weld seam. In addition, the selection of welding materials and welding parameters can also affect the occurrence of weld indentation.

Method for solving the problem of laser weld indentation
1. Adjust welding parameters
By adjusting parameters such as laser power, welding speed, and welding tracking method, thermal deformation during the welding process can be reduced, thereby reducing the risk of weld indentation.
2. Change the welding method
Changing the welding method is also an effective way to solve the problem of weld indentation. Common methods include increasing support, using auxiliary heating, or using multi pass welding.
3. Choose appropriate welding materials
Choosing the appropriate welding material is also the key to reducing weld indentation. Generally speaking, welding materials should have good thermal conductivity and coefficient of thermal expansion, and should be similar to the material being welded.
4. Strengthen post weld treatment
Post weld treatment is also one of the effective methods to solve weld indentation. For example, mechanical processing or heat treatment can be performed on the weld seam to improve its morphology.
5. Use adaptive control system
The adaptive control system can monitor the deformation during the welding process in real time and adjust the welding parameters in a timely manner, thereby reducing the risk of weld indentation.

Summary
Laser welding is an efficient method of metal connection, but the problem of weld indentation often occurs. By adjusting welding parameters, changing welding methods, selecting appropriate welding materials, strengthening post weld treatment, and using adaptive control systems, the problem of laser weld indentation can be effectively solved, and welding quality and production efficiency can be improved.