The rear longitudinal beam is the mechanical part of the automobile, and the damage caused by any factor can not reach the strength of the original automobile before welding damage. In this way, there are major safety hazards in the driving process of the vehicle, and it is generally replaced when it is broken. Anti-corrosion treatment method for repairing automobile longitudinal beam: 1. For the slight deformation of the iron sheet or skeleton of the car body, the sheet metal master will repair it with a hammer and a top iron, or other cold working methods, and the cold working repair will have little damage to the original automobile iron coating;

2. If the iron sheet or the internal skeleton of the car body is seriously deformed, it will be repaired by thermal method, such as repairing the iron sheet with a repairing machine (meson machine) and repairing it by cutting and welding. Welding when repairing the iron sheet will ablate the anti-corrosion and anti-rust layer inside the car body, and cutting and welding when replacing parts will ablate the anti-corrosion and anti-rust layer inside and outside the metal, seriously damaging the original anti-corrosion and anti-rust layer of the car body. Whether it is cold repair or hot repair, it will break the original anti-corrosion and anti-rust layer of the car body and carry out anti-corrosion and anti-rust treatment again;

3. Where we can touch the outer layer of the iron sheet and the body frame, we can polish off the damaged paint surface to show the true color of the metal. Apply a layer of epoxy primer with a brush or spray gun to prevent corrosion and rust. The epoxy primer not only protects the metal, but also improves the adhesion of the outer putty, making the repaired paint surface not easy to crack.

Million car purchase subsidy