What are the steps to repair the damaged sheet metal?

2019-11-20 11:45:45

Once the car sheet metal is damaged, the beauty of the car surface will drop in a straight line, especially when some novice friends are driving their car, there are many factors that are difficult to control, such as reversing and parking, etc. if they don't pay attention to it, it will affect their car, so what steps should be taken to repair the car sheet metal damage?

I. disassembly of sheet metal parts.

Remove the sheet metal parts of the damaged parts of the collision vehicle from the original body by cutting, etc.

2. Damage confirmation.

After cleaning the damaged parts, confirm the degree of damage, so as to establish the repair method.

3. Remove the old paint film.

Grind the original paint of the damaged part to expose the iron plate layer.

IV. flat sheet metal parts.

According to the damage degree of the sheet metal parts, use the corresponding sheet metal tools to draw the concave parts flat. The surface of sheet metal parts shall be precisely adjusted for flatness.

5. Fire collection.

The tensile and extrusion stresses produced in the process of metal recovering to its original shape and thickness are eliminated by fire collection, and the rigidity and strength of sheet metal parts are maintained.

6. Polish the feather edge.

A buffer slope surface shall be polished at the connection part between the damaged part and the surrounding paint film, so that the newly sprayed paint surface can be better connected with the original paint surface.

Apply epoxy primer.

Clean and degrease the polished damaged surface again, apply epoxy primer and dry it for rust prevention. The above operation procedures of automobile sheet metal parts are applicable to sheet metal parts with little damage. If the car body collides seriously and injures the frame, it is necessary to rectify the whole car frame on the frame straightening machine, and the operation will be more difficult.