Good material adaptability

Laser welding technology is suitable for a variety of metal materials, including different types of steel, aluminum alloy, etc. In automobile manufacturing, in order to reduce the weight of the car body and improve fuel economy, the use of lightweight materials such as aluminum alloy is becoming more and more widespread. Laser welding can well realize the welding between aluminum alloy materials and between aluminum alloy and steel, meeting the demand for material diversification in automobile manufacturing.

High efficiency and high speed

Laser welding is fast and can complete a large amount of welding work in a short time. Compared with traditional welding technology, laser welding can greatly shorten the welding time and improve production efficiency. In the automobile production line, this means that more cars can be produced per unit time to meet the market’s growing demand for cars. For example, in the welding process of the car chassis, laser welding technology can increase the welding speed several times, effectively improving the efficiency of the entire production line.

Reduce production costs

Although the initial investment of laser welding equipment is relatively high, in the long run, due to its efficient production speed, high-quality welding effect and low scrap rate, it can effectively reduce the overall cost of automobile production. High-precision welding reduces the subsequent grinding and trimming of the welding parts, saving manpower and time costs. Moreover, good welding quality reduces the product scrap rate caused by welding defects, further saving production costs.

Challenges

Due to the small laser focus spot size and narrow weld seam, laser welding has high requirements for workpiece assembly accuracy. The position of the welded parts must be very accurate, requiring that the position of the beam on the workpiece cannot have obvious offset and must be within the focusing range of the laser beam. If the workpiece assembly accuracy or beam positioning accuracy does not meet the requirements, welding defects are very likely to occur.

The laser fill welding process is more difficult to control unless using adding material with a good wire feeder. Laser fill welding is a fusion welding process, where the focused light spot is irradiated on the workpiece and the welding wire respectively. The molten pool is small, and it is very important to accurately control the relative position of the light so that the continuously fed welding wire can be melted evenly. The weld solidifies quickly and may have porosity and embrittlement defects if not done with knowledge or proper laser welding training.