If the rusty hole in the car is seriously damaged, it is best to replace it together. If the damage is light, the loose part of the corroded surface can be removed, then putty is applied, and then a layer of antirust paint is applied to avoid rust, and then painting and polishing are carried out.

You can polish the rust with sandpaper and grinding wheel. If possible, fill the hole with putty, putty, cement and foam, and then cover it with the same color spray can. It is recommended to go into the sheet metal repair shop, weld the quilt and repaint it.

We must pay attention to the anti-corrosion treatment of steel plates in the later stage, otherwise it will rust and rot after a long time. The original car body steel plates are all phosphatized, which has good anti-corrosion ability and is rarely treated during maintenance in the overhaul factory. Generally, it is repaired with ordinary steel plates, and it is best to use galvanized plates, so that corrosion protection will be better.