Can you understand the repair skills of automobile sheet metal parts?

2019-12-30 10:26:34

To some extent, the quality of car repair affects the actual use of the car, but also related to the life safety of drivers and passengers. Therefore, the auto repair shop needs to constantly improve its own repair technology, improve repair standards, so as to ensure the safety of maintenance vehicles.

When determining the technical standards of the body, it is necessary to ensure that the body is in a correct state, that each part is in a standard position, and that each part is firmly connected. In addition, it is necessary to adjust the rear-view mirror according to the specified angle to avoid deformation of the mirror surface. At the same time, check whether the doors and windows of the car can be opened and closed normally, and check the firmness of the car door lock. If necessary, replace the door lock with high safety performance. The car seats need to use high quality products.

Repair of car sheet metal parts bent due to impact

When a car is squeezed by a rib, its sheet metal parts will be bent. The common cause of Zui is the bending of sheet metal parts caused by automobile accidents. Generally, the bending deformation of the parts suffering from impact is serious, and the impact of surrounding sheet metal parts will be much smaller.

When confirming the curvature caused by impact, professional testing tools can be used for measurement. In addition, the bending degree of the surrounding position of sheet metal can be observed to predict the damage degree of sheet metal. If the frame of the car body has different degrees of bending, it needs to be repaired by the support method. At this time, pay attention to the force generated in the deformation direction, which should be opposite to the force in the support direction.

Repair of automobile sheet metal parts damaged by tearing caused by impact of external force

When the sheet metal parts of the automobile body are impacted by the ribs, they may be torn and damaged. When repairing the sheet metal parts with less damage, the tearing position shall be leveled first, and then they shall be welded for repair. If the sheet metal parts are seriously damaged, it is necessary to observe the shape of the tear first, and then select patching welding to repair or replace the new sheet metal parts according to the actual situation.

When the repair conditions are ideal, C02 gas can be used to protect the sheet metal parts for welding repair, and observe and detect whether there is prominent ductility problem in the damaged position of sheet metal parts. If the test results are consistent with the ductility prominent damage, it needs to be repaired by professional repair methods.

Repair of auto sheet metal parts with wrinkles caused by impact

When a car is squeezed by a strong rib, its sheet metal parts will wrinkle. If the sheet metal part has extension (elastic deformation), it can be judged as light damage; if the sheet metal part has plastic deformation, it can be judged as heavy damage. In order to repair the fold damage, it is necessary to apply the force opposite to the impact force on the damaged part, so that the fold can be pulled out and turned into concave convex damage, and then the special repair method of concave convex damage is used for repair.

The so-called repair method of concave and convex damage is to repair by the method of item pulling or hammering. If there is light concave convex damage in the sheet metal part, the pad iron sheet can be placed at the lower position of Zui in the concave, and the placement direction should be kept opposite to the concave damage direction, and the pad iron part should be changed by hammering; if there is heavy concave convex damage in the sheet metal part, the pad should be placed at the opposite side of Zui in the lower position of the concave, and then the concave should be supported by the brace tool.

Folding damaged sheet metal parts can also be repaired by the support method, of course, this is allowed in the repair conditions. If the repair conditions are not allowed, the car body needs to be disassembled first and repaired under the car. The folds of the car body should be pried off from the inner side and heated, and then the protruding position of the folds should be hammered, so as to restore it to the ideal state.