What kind of technology should be used to repair car fender damage?

In the fenders of the car.

In the maintenance method of welding repair, CO2 gas shielded gas welding is used.

By judging the length of the weld at different positions, and then selecting the appropriate welding method. When the weld is short, you can start the weld from the periphery of the damage and gradually move inward; When the weld crack is long, the welding is completed by the fixation method of spot welding, and the welding is completed in sections and positions.

However, it is also necessary to pay attention to the control of the weld temperature in this process to avoid the appearance of the plate surface.

Warping deformation. When there is a large force at the weld, you can choose the method of two-sided welding and increase the strength of the weld. At the same time, if the crack is connected to the back, the thick plate on the back can be heated first, so that the weld can be welded externally to the thick plate.

In the face of the situation that there is a thick plate inside and a long weld outside, the welding work can be completed by welding the welds at both ends first, and then processing the thick plate on the back. When repairing sheet metal parts, it is also necessary to eliminate the residual stresses caused by welding.

Ensure the flatness and smoothness of the weld.

In terms of plastic repair, we mainly deal with the repair operation after the repair is completed. By hammering after welding, an anvil of the appropriate shape can be placed on the reverse side of the hammering, and the shaping and maintenance work can be completed by extending outward from the protruding position. When there is a large pit area, you can use a wooden hammer to further restore the original shape, and finally use a hand hammer to repair it.

In terms of calibration and maintenance, it is mainly aimed at the maintenance method for the bending or elongation of a certain part of the automobile fender in the case of impact damage of the car. Generally, the tension pressure is used to fix the two ends, the length of the deformed part in the center is changed and operated, and the heating operation of gas welding is combined to complete the stretching and shrinking process as soon as possible. In this process, if a larger deformation is caused, it can be treated with hammering or horning.

The use of digging and repairing is to carry out repair operations in the event of severe impact damage or corrosion damage to the vehicle. The main purpose of the repair repair method is to restore its original shape, and the main maintenance steps can be summarized as: the determination of the scope of digging and repairing, the replacement and treatment of the model, the positioning and welding of the new plate, the leveling treatment and the reinforcement operation, etc., and finally realize the effective treatment of the sheet metal parts of the automobile body.

I think it can be repaired by electric welding technology, because it can restore the damage to the fender to its original state, and it is also possible to weld the fender.

It should be repaired with advanced science and technology, and the sheet metal must be painted, so that the car can be repaired.

It should be repaired through grinding, welding, shaping, correction, painting, filling and other technologies.

In this case, I personally feel that there is no need to replace the fender, find a professional sheet metal painting shop, pull out the part that crashed into it with a sheet metal gun and polish it, and paint it.

If you are more concerned about the car, feel that the repair has a shadow. Completely replaceable. But for the later second-hand car transaction, it will also have an impact to some extent. Minor accidents like yours are almost negligible and won't be discounted too much. Please rest assured that it will be repaired and replaced.

Note: If the replacement must use the original parts, this kind of appearance accessories is not recommended to use the restore, otherwise the second-hand car will be discounted a lot in the future, which is not cost-effective.

It has a great impact, replacing the fenders, the car becomes an accident car, and the value of the used car will be greatly depreciated in the future.

Not much impact. It's nonsense at all.

Mainly look at what quality the fender is replaced, if it is the later stage of the original factory, there will be no problems, if it is the later stage of the auxiliary factory, there will be certain safety problems.

Not serious. Fenders. Sheet metal painting is not an accident car.

Accident vehicles generally refer to vehicles that have undergone serious impacts, soaking in water, fire, etc., and still have potential safety hazards even if they are repaired.

A general term for vehicles. The mechanical properties and economic value of the accident car will be reduced.

If any of the following conditions are met, the accident vehicle is an accident vehicle

1. Vehicles that have been damaged to the engine compartment and cockpit after impact.

2. Rear fenders of the body.

Impact damage to more than one-third of the vehicle.

3. The longitudinal beam has welding, cutting, shaping, and deforming vehicles.

4. The shock absorber seat has welding, cutting, shaping, and deforming vehicles.

5. ABC pillars have welding, cutting, shaping, and deformed vehicles.

6. Vehicles that cause the airbag to pop out due to impact.

7. Other non-detachable parts of the vehicle with serious welding, cutting, shaping and deformation.

8. Vehicles whose body is soaked in water for more than half of the body, or water that enters the cockpit.

9. Vehicles whose bodies have been burned by fire for more than square meters and still have potential safety hazards after repair.

The fender of the car is located under the hood of the car, the interior of the engine compartment of the car, and the left side of the car engine is next to the small water tank with antifreeze, and the specific operation steps to find the fender of the car are as follows:

1. Open the driver's door of the car.

2. Pull the hood switch on the left side of the driver's leg of the car.

3. Lift up the hood of the car's engine.

4. Use the support rod to support the engine hood of the car, and ensure that the support is firm to avoid danger during operation.

5. The fender of the car is located under the hood of the car, the interior of the engine compartment of the car, and the side of the small water tank with antifreeze on the left side of the car engine.

See the four places on the side of this seahorse carriage? The fender is the first and fourth place. It doesn't have a front bumper. I can see it more clearly piece by piece.

In the black circle, the driver's side is the left fender, and the co-pilot is the right fender.

On the top of the front wheels, on both sides of the compartment cover.

The fender of a car is the outer panel of the body that covers the wheels, and is named after the shape and position of the part that resembles a bird's wing. According to the installation position, it is divided into front fender and rear fender.

The function of the fender is to prevent the sand and mud rolled up by the wheels from splashing on the bottom of the car during the driving of the car. Therefore, the materials used are required to be resistant to weathering and have good molding processability. The front fenders of some cars are made of plastic materials with a certain elasticity.

Plastic materials are cushioning and relatively safe.

1. The front fender is installed at the front wheel, and the maximum limit space when the front wheel rotates and jumps must be ensured, so the designer will use it according to the selected tire model size"Wheel Jump**"to verify that the fender is designed and sized appropriately.

2. The rear fender is slightly arched and convex outward, which is based on aerodynamics. Some sedans have separate fenders that are easy to replace in one piece. Some fenders have become a whole with the body body, and they are produced in one go.

The fenders are the outer panels of the body that cover the wheels, and are named after the shape and position of the parts on the old car body that resemble bird wings.

According to the installation position, it is divided into front fender and rear fender, the front fender is installed at the front wheel, and it is necessary to ensure the maximum pole swimming old slip space when the front wheel rotates and runs, so the designer will use "wheel jumping" to verify whether the design size of the fender is appropriate according to the selected tire model size.