There is obviously too much filler material in the weld during filling welding, and the weld seam is too high. Cause: The welding wire feeding speed is too fast or welding speed is too slow during welding. Solution: Increase the welding speed or decrease the welding wire feed speed, or reduce the laser power.
Cause: The weld surface is not cleaned, or due to the evaporation of zinc vapor from galvanized sheets. Solution: Clean the weld surface and improve the volatilization of zinc when subjected to heat.
After laser welding is completed, many metal particles appear on the surface of the material or workpiece. Cause: The surface of the material or workpiece is not cleaned, there are oil stains or pollutants, or it may be due to the volatilization of the galvanized layer. Solution: Clean the material or workpiece before laser welding.
Laser welding seams have a sunken metal surface. Cause: The position of the center of the laser welding spot is not good. The center of the spot is close to the lower plate and deviates from the center of the weld, causing partial melting of the base material. Solution: Adjust the light and welding wire… Continue reading Why is there a problem with laser weld denting?
During the welding process, the surface slag inclusions that can be seen from the outside mainly appear between layers. Cause: A. During multi-layer multi-pass welding, the interlayer coating is not clean; or the surface of the previous layer of weld is not smooth or the surface of the weldment does not meet the requirements. B.… Continue reading Why is there a problem of slag inclusion on the surface during laser welding?
Laser welding has an undercut problem: The combination of the weld and the base metal is not good, there is a groove, the depth is greater than 0.5mm, and the total length is greater than 10% of the weld length, or greater than the length required by the acceptance standard. Causes: A. The welding speed… Continue reading Why is there an undercut problem in laser welding? How to solve it?
When brazing, the welding seam is interrupted or the thickness is uneven due to no wire feeding. Causes: Unstable wire feeding, or discontinuous light output, etc. Solution: Adjust the stability of the equipment.
With the development and advancement of electronics, new requirements for PCB substrate materials have been put forward, thus driving the continuous development of copper-clad laminate standards. In a complete circuit board manufacturing process, welding is an essential process. Generally speaking, the substrate is the copper-clad board. It is used as the base material for manufacturing PCB because… Continue reading How to solve the problem of burning the substrate when laser welding PCB?
Cause: The laser resonator film or focusing lens may be contaminated or damaged. The laser from the main optical path may deviate. The laser may not be output from the center of the copper nozzle under the focusing head. The cooling water may be contaminated. Solution: Regularly check and replace the laser resonator film or… Continue reading Why does the flame weaken during laser welding?