Six repair methods of automobile sheet metal parts.

Automotive sheet metal maintenance tips: 1. Pull-ring method for sheet metal repair Pull-ring traction repair method is a sheet metal repair method introduced in recent years. The so-called pull ring traction repair method is to weld a certain number of flat pad pull rings according to the size of the damaged parts of sheet metal parts. The flat washer tab is called the traction medium. Insert the steel wire rope into the medium, and then pull the steel wire manually or mechanically. The damaged part of the sheet metal part is pulled outward by the medium to restore it to its original position and shape. In particular, it is more convenient to repair sheet metal parts with double-layer structure, parts that are not easy to close, corner transition, door posts and so on. 2. Thermal shrinkage method Local thermal shrinkage method is a common method for sheet metal repair. The damage deformation of sheet metal parts is mainly the tensile deformation of related parts, and the original shape can be restored by eliminating the tensile stress by thermal shrinkage. 3. Hammer top iron repair method The hammer top iron repair method is a traditional sheet metal repair method. The sheet metal worker holds a hammer in one hand and a top iron or other tools in the other to tap and reshape the sheet metal. The manual operation of sheet metal requires the skills and experience of sheet metal workers, and good sheet metal repair technology cannot be obtained overnight. Sheet metal repair mainly includes deformation surface shaping and contour line correction.