Sheet metal repair usually has the following methods: Pull-ring sheet metal repair 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 pad pull ring is called pulling medium, and then the steel wire is pulled through the medium by manpower or machinery, forcing the damaged part of the sheet metal to be pulled out through the medium to restore its original position and shape.

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. Hammer top iron repair method Hammer top iron repair method is a traditional sheet metal repair method. Sheet metal workers repair the shape of sheet metal with a hammer in one hand and a top iron or other tools in the other.

The manual operation of sheet metal requires the skills and experience of sheet metal workers, but good sheet metal repair technology can not be achieved overnight. Sheet metal repair mainly includes deformation surface shaping and contour line correction.