Note: the thickness of putty should generally not exceed 0.2mm, otherwise it will crack and fall off later.
Vehicle collision deformation, need sheet metal repair. It is necessary to repair the concave-convex damage caused by impact, and the concave-convex damage of sheet metal parts can be repaired by hammering or jacking. The method of repairing the warpage and skew deformation of the car body can be mechanical method or flame heating knocking method.
Automotive sheet metal repair is a technical means of automobile repair, which refers to the repair that should be carried out after the collision of the automobile body, that is, all the work except anti-corrosion and decorative painting of the automobile body, such as body damage analysis, body measurement, shaping, stretching correction, stress relief welding and assembly adjustment of the automobile body accessories.
Usually, if there is too much putty to be coated on the coated surface or it is uneven by putty, it is necessary to sheet metal first, and when the coated part is deformed, it is also necessary to sheet metal first. For the repair method of damaged or perforated sheet metal parts, for the surface of damaged and perforated sheet metal parts due to impact, smear method can be used to repair them. At present, the main adhesives used are epoxy resin adhesive, phenolic resin adhesive and copper oxide adhesive.