Laser Welding Technology in Material Industry

Experiments show that high-brightness fiber lasers can overcome all the known problems in copper welding applications. The high power density achieves instantaneous coupling and formation of keyholes, enabling stability and high absorptivity even at 1070 nm. With a high dynamic beam swing, the welding process is very stable, thereby reducing or avoiding stomatal and splashing phenomena, resulting in high quality welds. The process parameters set for the swing of the beam enable the weld geometry to be controlled, resulting in a very shallow weld in the deep weld process. The use of long pulse quasi-continuous fiber laser, even in a single pulse through the beam high-speed dynamic movement to complete the spot welding. In this way, high-quality welds can be created by increasing the pulse at a very low average power.

green laser pointer

Laser flight welding technology through the blue laser pointer beam incident to the scanning galvanometer X, Y axis of the two mirrors, the computer control the angle of the mirror to achieve any deflection of the laser beam. Through the linear movement of the negative lens, the focal position in the Z direction to produce a certain range of adjustment, through a certain power density of the laser to be processed in the workpiece surface to be processed at different locations to achieve welding connection. Galvanometer group of dynamic movement, so that the lens in the scanning lens laser beam quickly switch between the solder joints, focusing distance due to focusing lens, mirror small angle deflection can be achieved in the laser beam in the solder joints (seam) of the can be quickly switched, the positioning time is almost zero, which can achieve multi-point rapid welding.

Because of its use through the robot arm and laser scanner to ensure that the welding process with the workpiece zero contact, the weld position can be flexible and changeable and large parts, complex surface of the rapid multi-point welding. This will not only reduce the excessive investment in welding equipment and the use of the site occupancy, reduce the cost of a single production, and welding the overall effect of stability. Based on the above advantages, laser pointer welding technology in addition to apply to the trunk lid, door, seat plate, dashboard support, seat adjustment and seat frame and other white body on the welding, but also in the aluminum, galvanized sheet and battery, plastic and other welding on the widely used.

Around the processing technology, ultra-fast laser industry chain-related enterprises and research institutes are developing more stable performance, more cost-effective ultra-fast laser devices, beam space-time plastic transmission technology, combined with the best material processing technology and intelligent manufacturing combined with control technology. From the perspective of the extension of the industrial chain, the laser industry should look like this, by the 1 billion yuan output value of the laser, provoke 5 billion yuan output value of the green laser pointer processing system, and then provoke 50 billion yuan output value of the application area, so by 2020 ultra-fast laser industry chain scale can reach more than 70 billion US dollars in size.

If the use of traditional methods of rust removal, the project is large and complex, and rust powder is not only harmful to the health of workers, but also seriously pollute the environment. The laser in this area but show their talents, you can quickly and easily remove the metal surface or corner of the corrosion, and also to prevent further oxidation. Laser rust as a new cleaning process, in the field of rust on the surface of carbon steel has a huge development prospects.

Laser deinterleaving as an efficient cleaning method, usually used in the field of macro industries. In the laser de-lacquer process, the laser acts on the paint coating, the paint coating in the pulse time to absorb the red laser pointer energy and convert it into heat so that the temperature of the paint in a very short period of time to achieve its gasification temperature in order to achieve the paint Effect.