Auto Sheet Metal Repair Tips? What are the steps of automotive sheet metal repair?

Regardless of the size of the pit, the pit should be knocked up or pulled out first to make it basically the same as the original shape.

1.Repair of pits in single-layer metal sheets.

Because the metal plate is stretched, there will be a slight pit compared with the original state, at this time, you can use a wooden hammer or a plastic hammer to gently tap from the back of the pit, and at the same time choose a suitable wooden block to pad the outside of the metal plate, so as not to bend the pit around the pit by the momentum of the hammer.

2.Repair of pits in sandwich metal sheets.

The pit is sandwiched sheet metal or other reasons, and the hammer cannot work behind the pit, so it should be repaired by the following methods.

1) Drilling method.

This method is suitable for small areas of pits, which cause little damage to sheet metal and paint. Use a hand drill to drill a row of small holes in the depression or fold, and the hole diameter and hole spacing should be determined according to the deformation of the outer body panel.

2) Pull ring method.

This method is suitable for larger areas of damage and can reduce the damage to sheet metal parts caused by excessive perforations.

After leveling, the hole is welded to death with carbon dioxide gas welding. The welding method is as follows.

The welding torch is perpendicular to the plate surface and aligned with the center of the hole.

Insert the wire into the hole, briefly press the switch to activate the arc, and then release the switch.

The wire forms a molten pool in the hole, which then cools and solidifies. If the hole diameter is large, the welding torch moves slowly along the perimeter of the hole to the center of the hole, and the solder joint should be slightly higher than the plate surface, too high will bring difficulties to the grinding, otherwise, the strength will be insufficient.

1) Sheet metal repair pull ring pull ring pull ring traction repair method is the sheet metal repair method introduced in recent years, the so-called pull ring traction repair method is according to the size of the damaged part of the sheet metal part welded on a certain number of flat gasket pull ring, flat gasket pull ring is called traction medium, the wire rope is penetrated into the medium, and then the steel wire is pulled by manpower or machinery, through the medium to make the damaged part of the sheet metal part force outward traction, so that it can be restored to the original position and shape, especially for a large area of deformation, double-layer structure of sheet metal parts, not easy to get closer, Corner transitions and door pillars are more convenient to repair by pulling the ring traction method.

2) Heating shrinkage methodLocal heat shrinkage method is a common method for sheet metal repair. The damage and deformation of sheet metal parts is mainly the tensile deformation of the relevant parts, and the tensile stress can be eliminated by the heating and shrinkage method, which can restore the original shape.

3) Hand hammer and top iron repair methodThe hand hammer and top iron repair method are the traditional sheet metal repair methods. Sheet metal workers carry out sheet metal hammering and shaping repairs with a hammer in one hand and a top iron or other tool in the other. Sheet metal manual work requires the skills and experience of sheet metal workers, and good sheet metal repair technology can not be obtained overnight, sheet metal repair mainly includes deformation surface shaping and shape line correction.

Body dent repair skills: First of all, we must judge the location and size of the car's dent. If the depression area is large, the method of "pulling" can be adopted, and a special suction cup can be used with a "T-shaped device"; If the depression area is relatively small, it is generally necessary to use a special hook to slowly push the depression outward until it recovers; Finally, when the depression is restored, there will generally be some unevenness, which needs to be gently tapped with a rubber hammer until it is completely flat.

The above skills have very high experience requirements for car repairers, if the force is uneven, it is likely to cause secondary damage to the vehicle, so it is very important to find a professional body dent repair shop, which can help you save a lot of costs.

The main process of automobile sheet metal work can be roughly divided into: whole car disassembly, car body repair, sheet metal repair, sheet metal maintenance, whole car installation, and factory finish. Each of these processes can be subdivided into several processes. Automobile sheet metal is a technical means of automobile repair.

There are several methods of automotive sheet metal repair, and the one that is more reliable is data repair and dent repair.

Automobile sheet metal (metal plate) is a technical means of automobile repair, which refers to the repair of the car body after the collision, that is, all the rest of the work except for the anti-corrosion and decoration of the car body. Such as the analysis of automobile body damage, the measurement of automobile body, the shaping of automobile body sheet metal, tensile correction, stress relief welding, and the assembly and adjustment of automobile body accessories.

To put it simply, if there is an accident in the vehicle or: the sheet metal parts are faulty, the sheet metal needs to be repaired and painted, and the appearance and structure of the vehicle must be restored to the factory requirements.

To put it bluntly, if the appearance of the body is damaged and deformed, the process of sheet metal is required.

Car painting is a kind of car beauty method, which refers to the effect of protecting the car by coating the surface of the car.

0 car primer, also known as anti-rust primer, that is, the paint for the primer, which is generally directly applied to the surface of the object or coated on the surface of putty. Its function is to prevent oxidation and corrosion of the metal surface, and enhance the adhesion of the metal surface to putty or intermediate coat and topcoat.

So the simple summary is that if your body has cosmetic damage and deformation, you need automotive sheet metal. If you simply want to enhance the wear and corrosion resistance of the car, you can choose painting.

Hello, the exterior panel of the body is disassembled and assembled. Leveling repair (knocking, pulling, cutting, welding), body girder correction, except for engine electrical line speed and other things must be disassembled.

There are usually the following ways to repair sheet metal:Pull ring method 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 gasket pull rings according to the size of the damaged part of the sheet metal parts.

The flat gasket pull ring is called the traction medium, and then the steel wire is pulled through the medium by manpower or machinery to force the broken part of the sheet metal part to be pulled outward through the medium to restore it to its original position and shape.

Heat shrink methodLocal heat shrink 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 tensile stress can be restored to the original shape by eliminating the tensile stress by heating and shrinking the method. Hand hammer and top iron repair methodThe hand hammer and top iron repair method is the traditional sheet metal repair method.

A sheet metal worker holds a hammer and the other hand holds a top iron or other tool to perform sheet metal knock repairs.

Manual operation of sheet metal requires the skills and experience of sheet metal workers, but good sheet metal repair technology is not achieved overnight, sheet metal repair mainly includes deformation surface shaping and shape line correction.

Hello, car sheet metal repair is a complete repair of faulty and damaged car bodies.

One: car body assembly This is a generic accessory name, including:

The sum of the body sheet metal parts of the car glass, the whole car lamps, the whole car interior and exterior decoration parts and handles, the seats and accessories, the lock mechanism, the window sealing and lifting mechanism, the door and the front and rear sail covers. In other words, when your car has problems such as broken glass, door lock failure, damaged trim, etc., remember that you need to find the car sheet metal and not other types of work!

2: Detailed explanation of sheet metal workflow.

The whole car is dismantled, which may be involved, or all the sheet metal parts of the part where the painting work is carried out.

The car body repair will be caused by impact or overturning caused by the iron plate dentation, beam bending, dimensional displacement and other injuries to replace, stretch, weld, etc.

Sheet metal repair, all damaged sheet metal parts should be repaired for bonding, welding and other appearance and size restoration.

Sheet metal parts are strictly repaired, and the repaired sheet metal such as doors and lights and non-sheet metal parts such as displaced machinery and electrical appliances are reset, which requires superb skills and unremitting patience to achieve accurate installation and beauty.

The whole car is installed, all sheet metal parts are installed and fixed after painting, and all movable sheet metal parts are tested.

The main process of sheet metal work: The main process of sheet metal work can be roughly divided into: 1: body disassembly and assembly 2: body correction 3: body repair. Each of these processes can be subdivided into several processes.

Sheet metal is a type of work for auto repair, mainly for the appearance of the body, the replacement of the external car body (such as bumpers, doors), repair, orthopedics, and paint also belong to the sheet metal work area, there is a specific division of labor in the sheet metal, the sheet metal in the broad sense is fully covered, and the sheet metal in the narrow sense is only to replace the outer car body, as well as the use of welding, orthopedics and other general repair of the car shape work, the sheet metal in the broad sense and putty, grinding, and painting, as well as polishing, are their respective divisions of labor in the interior, what we call sheet metal, Generally refers to a broad sense.

When the automobile sheet metal is painted, it is first processed by the sheet metal worker, and then handed over to the painter to spray the paint. Sheet metal workers need to learn the use of basic equipment, such as grinding, dismantling, drawing, etc. Painters need to learn how to spray and dry masking, putty, and various paints.

The basic process of sheet metal painting is usually divided into five steps:

1. Confirm the plan: formulate the corresponding maintenance plan according to the severity of the vehicle collision. If it is a serious traffic accident, it will also involve the engine, gearbox, circuit, etc., and then it will need to be disassembled and repaired by the personnel of the machine repair department.

2. Sheet metal correction sheet metal correction needs to repair the deformed parts through corresponding maintenance equipment according to the degree of deformation of the body. Sheet metal includes cutting, grinding, stretching, receiving, oxygen regeneration, etc., the purpose of which is to restore the deformed parts to their original shape and maintain the original rigidity of the metal.

3. Scraping and shaping: There will be a lot of flaws and repair traces after the vehicle passes the sheet metal, which is an irreparable defect in the sheet metal work, even if the new parts are directly replaced, there will be imperfections, and then it is necessary to reshape the body waist line and flatness by scraping the ash. This process may seem simple, but it is actually a test of the worker's skill.

4. Spraying paint: The process of spraying paint is also relatively cumbersome, and there are also high requirements for the working environment, which needs to be carried out under dust-free conditions. Painting is mainly divided into the following steps:

Spraying the primer - spraying the primer - sanding the primer - mixing the paint - spraying the topcoat - drying the paint.

5. Paint treatment: Paint treatment is the last process in the whole sheet metal painting work. In fact, no matter how meticulous the work of the workers is, there will be some imperfections left behind, even some dust floating in the air will affect the whole effect, and then it can only be remedied by this link.

Usually the main remedy is to use very fine beauty sandpaper or sand with a polisher to achieve a "mirror" effect.

The living conditions are getting better and better, every household has bought a car, but in daily life, the car is inevitably bumped and bumped on the road, especially for the reversing technology is not good, the car is always potholes, plus the weather in recent years is also relatively large, the billboard that flew down was accidentally hit by a falling object when parking, which made the owner feel distressed, but there was no injury to the body frame, in fact, it was only slightly deformed, and it only needed to be restored through sheet metal. <>

1. What is sheet metal?

The so-called sheet metal is actually a processing technology, so far sheet metal has not given a complete definition, in some foreign journals, sheet metal will be defined as the processing technology of metal sheets, including various processing techniques, the salient feature is to let.

Finally, the sheet metal becomes uniform in thickness and shape.

2. How to repair automobile sheet metal?

The so-called automobile sheet metal is a technical means for the repair of metal plates on the surface of the car, through sheet metal repair, the car can be repaired after the collision, or the dent caused by the accident, not only can the body anti-corrosion and decoration be sprayed, but also the whole body can be shaped, stretched, corrected, stressed welding or the assembly and adjustment of body accessories. It is mainly through the force of personnel and machinery and equipment to restore the deformed position of the metal plate to its original shape.

3. What are the steps of auto sheet metal?

In the case of automobile sheet metal, first of all, the vehicle collision or accident is caused, the repair part needs to be marked, the deformation is observed, the damage is determined, the tools used in the process of sheet metal and the appearance of the vehicle are damaged, whether the repair can not be disassembled and restored, or whether the maintenance part has cracks or even signs of fracture, if there are cracks or fractures will be replaced, try not to repair, after determining the repair part, it is necessary to refer to the technical parameters and dimensions of the body. According to the characteristics of the body material, the force characteristics and the direction of the deformation force, the body is stretched and flattened and welded, and on this basis, it is not only based on advanced work experience, but also through accurate instruments to judge. After the body is restored to its original shape, the damaged paint surface is further processed, sprayed with color paint, and finally the body is restored to its original shape and appearance.

It can be seen from the above aspects that the steps of automobile sheet metal are to first determine the maintenance part, and then restore the damaged part of the dent part according to the measurement data, and then carry out color painting and adjust the paint surface after recovery.

Automobile sheet metal painting is divided into 3 steps:

1. The first primer fills the sand marks and micropores at the bottom of the workpiece, increases the adhesion of the lower coating, and also has the effect of defect indication.

2. The primer is a very important part of the coating, which prepares a complete and smooth working surface for the topcoat, completes the last process of all primer work, increases the adhesion of the intervening layer and has a certain isolation effect, so as to ensure the quality stability of the topcoat.

3. Topcoat, topcoat is divided into single-layer paint and multi-layer paint, which is the color determination layer and decorative protective layer. Multi-layer paint is divided into silver powder series paint and pearl series paint, which is divided into double-layer and multi-layer construction process to complete the paint, and silver powder paint is made of special aluminum materials.

Extended information: In the painting process, the treatment of the surface of the car body that needs to be repaired is very important, if the treatment is not good, not only the surface feels rough and uneven, but also brings repair, which directly affects the satisfaction of the car owners with the service.

As an important process in sheet metal spray maintenance, the traditional wet grinding process was used for surface treatment in the past, and the quality hazards brought by this process method are increasingly exposed.

The grinding method of pneumatic tools or electric tools used in the "dry grinding" can not only effectively absorb the dust generated in the maintenance, but also improve the maintenance efficiency and ensure the effect.