Views: 62 Author: Site Editor Publish Time: 02-27-2022 Origin: Site
In recent years, laser welding machines have been widely used on silicon steel. Silicon steel sheet is a widely used electromagnetic material, but it is difficult to weld by conventional welding methods. Today Leapion Laser introduces the application of laser welding machine on silicon steel sheet.
The main problem of TIG welding of silicon steel sheet is the embrittlement of the joint, and the repeated bending times of the joint in the welding state is low or cannot be bent, so a flame annealing process has to be added after welding, which increases the complexity of the process flow.
The traditional argon arc welding is easy to burn the tungsten needle, and it is often time-consuming to replace the tungsten needle in large quantities, so it is impossible to achieve mass production.
The Q112B high silicon oriented transformer steel (thickness 0.35mm), which has the worst weldability among the silicon steel sheets, was welded with a CO2 laser welding machine, and satisfactory results were obtained. The higher the repeated bending times of the silicon steel welded joint, the better the plasticity and toughness of the joint.
The comparison of the repeated bending times of the joints of several welding methods (TIG welding, beam welding and laser welding) shows that the laser welded joint is the best, and it can meet the requirements of the production line for joint toughness without heat treatment after welding.
1. There is no gap in laser welding: the laser welding machine can precisely control the welding position, and after argon arc welding or microbeam plasma welding, there will be gaps in the two ports of the silicon steel sheet, so it is necessary to cut the lamination. go to the notch.
2. The laser welding seam is narrow: the width of the laser welding seam is only 0.2mm, which is beyond the reach of argon arc welding and plasma welding.
3. Flat laser welding seam: flat and smooth. Laser welding produces a narrow seam and a small heat-affected zone, resulting in minimal deformation.
4. The quality of laser welding is good: laser welding and workpiece non-contact processing, after welding, there is no damage to the original quality, and the toughness is strong.
5. High laser welding efficiency: high-power laser welding power supply does not require tungsten needles, which overcomes the fact that ordinary argon arc welding is easy to burn tungsten needles, and it takes a lot of time to change tungsten needles frequently, and it is impossible to achieve mass production.
6. Laser welding can also be used for the dicing of monocrystalline silicon, polycrystalline silicon and amorphous silicon solar cells, as well as the dicing and cutting of silicon, germanium, gallium arsenide and other semiconductor substrate materials.
7. Laser measurement can quickly and very accurately check whether the size of each finished part is exactly the same as the design size.
Laser welding technology has the advantages of high efficiency, no pollution, high precision, and small heat affected zone. Laser welding machines are widely used in the electronics industry. For more information and professional inquiries about laser welding machines, please contact Leapion Laser directly.
