In the welding process of laser welding equipment, due to improper selection of welding materials, welding environment, welding process, etc., welding defects are prone to occur. Excessive welding fumes and dust is also one of the culprits of defects. PURE-AIR, mobile welding dust removal equipment manufacturers, and Welding dust removal equipment manufacturers will resolve the two major types of problems!

1. Welding cracks:

Post-weld thermal cracking refers to the cracks produced by the welding seam and the metal in the heat-affected zone cooling to the high temperature area near the solidus line during the welding process. Usually divided into high temperature cracks and low temperature cracks. In the laser welding process, due to the small heat input of the laser, the small welding deformation, and the small stress generated by the welding, high-temperature cracks generally do not occur. However, due to improper selection of materials and process parameters, high-temperature cracks sometimes occur. In the welding process, the cracks produced by high-strength and low-alloy steels whose temperature is lower than the Ms point or lower than 300°C are called low-temperature cracks.

2. Appearance defects of welds:

In the laser welding process, the key to improving the surface quality of the joints and parts is the appearance of the weld. Therefore, in the laser welding process, the welding seam must be controlled. Common surface defects in the laser welding process include: weld accumulation, undercut, concave and sunken welds, interrupted or uneven welds, uneven weld heights, pores, weld bumps, etc. on the weld surface.

Compared with traditional welding machines, laser welding machine has the advantages of fast welding speed, small heat-affected zone, flat welding surface, etc. It is a green and energy-saving laser welding machine. However, improper use will still cause welding defects. This also reminds us that the laser welding machine must also follow the welding process and operate reasonably in order to achieve a good welding effect. Indispensable supporting equipment Mobile welding fume purifier, Welding dust removal equipment!

If you want buy fume extractor, please contact with Dongguan Pure-Air Tech Co.,ltd, E-mail: sales@pure-airtech.com.