Compared to other welding technologies, laser welding has a wider range of applications and more industries in use.
It also has advantages in welding that other technologies do not have, such as fast welding speed and more aesthetically pleasing welds. With so many advantages, does laser welding have any flaws?
Welding defects in laser welding machines:
1. Welding defect – crack
During the laser welding process, due to the small heat input of the laser and the small deformation and stress of welding, high-temperature cracking generally does not occur.
However, due to differences in materials and improper selection of process parameters, high-temperature cracking may sometimes occur.
2. Welding defect – removal and change in welding quality
When performing high-energy laser beam welding, a plasma controller must be used to remove the ionized gas around the weld pool to ensure the reappearance of the weld line.
Furthermore, when welding high reflectivity and high thermal conductivity materials such as aluminum, copper and alloys, the welding quality will be changed by the laser.
3. Welding defect – welding spatter
After laser welding, some parts or materials may have many metal particles on the surface, which affects not only the appearance but also the use.
The reason for this phenomenon is that there are electroplated spots or layers on the surface of the part or material.
4. Welding defect – welding seam
When the weld line changes significantly, it is easy to have a weld bead or irregularity at the turning point. This is because the welding line changes significantly and the teaching is irregular.
At this time, it is necessary to adjust the welding parameters and use a method to smooth the transition at the turning point.
These are the most common welding defects in laser welding.
In addition, the energy conversion efficiency of laser welding is very low, generally less than 10%, and its welding equipment is relatively expensive.
These are its flaws, but just as people are not perfect, equipment technology is not perfect either. It can only be improved through research and innovation.
