As we all know, the main structure in automobile manufacturing is the automobile frame, which is used to support and connect the automobile and bear various loads inside and outside the automobile. Therefore, the frame must have enough strength and stiffness to withstand the load of the car and the impact from the wheels. As the carrier of all parts, the performance of the frame is related to the service life and collision safety of the vehicle. But at the same time, if the automobile materials are not properly selected, they are also very easy to corrode and rust, which will reduce the service life of the automobile and further increase the potential safety hazards.
According to relevant data, a car will have corrosion spots within one year, and corrosion perforation will occur within three to four years, especially in harsh environments such as cold, hot and humid and salt fog. The adoption of galvanized sheet can effectively improve the anti-corrosion performance of automobile body and prolong the service life of automobile. In addition, the salt spray test also verified that the corrosion resistance time of galvanized steel sheet is 2~3 times that of ordinary cold-rolled steel sheet. In recent ten years, China’s domestic independent brands have gradually started to use galvanized steel sheet, and more and more widely used in the automobile manufacturing industry.
Previously, electric arc welding was mainly used for the welding of galvanized sheets. Now, with the development of the laser industry, laser welding is more and more used in automobile maintenance. It can make the combination precision of automobile metal body higher. While improving the rigidity and strength of the automobile shell, it can reduce the weight of the body, thus reducing potential automobile safety hazards.
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Post time: Dec-16-2022