How to repair the sheet metal wire of the car? How does auto sheet metal repair work?

1.Injury confirmed. After the damaged area is cleaned, the extent of the damage is confirmed, and a repair method is established.

2.Sheet metal disassembly. The sheet metal parts of the damaged parts of the collision vehicle are removed from the original body by cutting or other means.

3.Remove the old paint film. The original paint on the damaged part is sanded until the iron plate layer is exposed.

4.Sheet metal parts are leveled. According to the degree of damage to the sheet metal parts, the corresponding sheet metal tools are used to flatten the depression parts. After the leveling operation, the surface of the sheet metal parts should be finely adjusted for flatness.

The whole car is dismantled, the body is repaired, the sheet metal parts are repaired, the sheet metal parts are repaired, the whole car is installed, the vehicle is dent repaired, there is a special repair equipment, if the depression area is relatively large, sheet metal treatment is required. If the surface of the car is dented, just go to the outside auto repair shop to do sheet metal painting.

Automobile sheet metal repair method:

1. Depression, if you want to repair, you need to use automobile sheet metal technology, sheet metal work process to explain the dismantling of the whole car in detail (it may be involved, or remove all the sheet metal parts of the painting work) car body repair (the iron plate depression, beam bending, size displacement and other injuries caused by impact or overturning are replaced, stretched, welded and repaired);

2. Repair of sheet metal parts (repair the appearance and size of all damaged sheet metal parts that should be repaired, welding, etc.) Strict repair of sheet metal parts (reset the repaired sheet metal parts such as doors and lamps and non-sheet metal parts such as displaced machinery and electrical appliances, which requires superb skills and unremitting patience to achieve accurate installation and beauty);

3. Installation of the whole car (after painting, all sheet metal parts are installed and fixed, as well as the test work of all movable sheet metal parts) I think that I should knock on the gold leveling, scrape the mud three times, wipe it with sandpaper, and then spray the primer and then spray the original paint.

First of all, the paint film on the rib line of the damaged part is polished clean, and then two points are found in the undamaged places on both sides of the rib line damage part, and then the two points are connected with a ruler, and finally the meson is pulled.

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.

1. Clean the paint surface of the damaged part of the vehicle, the paint cleaning is not only to polish the paint surface, but also to make the later painting and the original paint of the body be integrated with the paint of the more uniform and smooth edge paint transition.

2. Sheet metal restoration is the most critical link in the entire deep repair of sheet metal.

3. The paint of automobile sheet metal parts is generally sprayed three times, including the first primer, the middle primer and the top coat.

4. The first coarse infiltration avenue primer is to increase the adhesion of the primer in the middle of the rock vertical, and the primer in the middle is to provide a complete and smooth surface for the topcoat, increase the adhesion and play an isolating role, and ensure the durability of the topcoat.

The content comes from the user: that she is who Ann.

The basic steps of automotive sheet metal repair.

1.Restoration of the front hood.

The repair of the front cover is relatively simple, and it can be repaired by removing the insulation layer or scraping off the adhesion or punching holes according to the situation.

2.Restoration of the front fenders.

The front fender can be repaired by removing the headlights, the fenders on the tires, and the small side lights. It is also possible to repair the pores at the rear end of the front fenders, and in some cases it is permissible to remove the fixing screws on the upper part of the front fenders and then use triangles to support the voids for repair.

3.Restoration of the roof.

When repairing the roof, according to the dent situation, the roof interior can be removed completely or only part of the interior buckle can be removed, the principle is that the tool can be reached and unobstructed, and the disassembly can be minimized.

4.Restoration of the front doors.

In general, the front door does not have to be dismantled, but can be done by lowering the glass. If it is dented in the stiffener or on the lower edge of the door, it may be necessary to remove the door upholstery for repair, or it can be repaired through the drainage hole in the lower part of the door; If the upper stiffener is in the upper part of the stiffener, the dust strip on the outside of the glass can be removed and repaired through the natural hole in the stiffener, or if there is no natural hole, the door upholstery must be removed and repaired from the lower edge of the stiffener. Some models also need to separate the double layer on the upper part of the door for repair, and if the dent is in the front of the door, the door needs to be removed and repaired on the repair frame, which can be repaired through threading holes.

5.Restoration of the rear doors.

The rear door can be easily repaired, not only by repairing the front door, but also by threading the front end of the rear door.

1. BAI impact concave and convex damage.

Injure. The impact of the sheet metal parts is uneven

It can be repaired by hammering or topping.

Different treatment methods are used for the same condition. Of course, the process flow is not the same if the degree of concave and convex is different, and the problem of body material must also be considered!

2. Warping, skewed deformation. Sheet metal parts due to impact, friction or due to improper use will produce warping, skewed and other deformation phenomena, at this time can be eliminated by mechanical methods or by the method of flame heating and knocking. Answer.

3. Broken or perforated. The surface of the perforated sheet metal parts of the impact damaged goods can be repaired by the application method, and the adhesives used at present mainly include epoxy resin glue, phenolic tree grease glue and copper oxide binder.

Fourth, cracks or local serious damage. For these two cases, in the past, the method of welding repair or repair would be adopted in automobile repair, but at present, 4S shops usually directly adopt replacement treatment.

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.

Broken or perforated. The surface of the perforated sheet metal parts of the impact damaged goods can be repaired by applying the adhesive method, and the adhesives currently used mainly include epoxy resin glue, phenolic resin glue and copper oxide binder.

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 is a kind of automobile repair technology, which means that the processing of repairing the deformed part of the metal shell of the automobile is returned to the art. Automotive sheet metal.

A is also equivalent to automobile sheet metal 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.

Since the car is a high-precision whole. And electrical accessories and mechanical accessories should be attached to the corresponding position of the car body with high precision and low error. Even the straightness and curviness of the paint (which greatly affects the appearance of the body) are highly dependent on the error value of the body sheet metal, so the sheet metal body and repair have become a pure manual work that has no hard standards, no automatic tools, and cannot be intuitively taught in the automotive industry.

In a nutshell, automotive sheet metal is the complete repair of a faulty and damaged car body.

Professionals in the automotive sheet metal spraying industry told reporters that automotive sheet metal spray technicians are like specialists in plastic surgery, and China needs a large number of auto maintenance sheet metal spraying technicians every year, and there is a certain gap between supply and demand, therefore, in recent years, the salary of sheet metal spray paint technicians has been bullish in recent years, and the employment prospects are good.

Automotive sheet metal.

BAI data restoration is a technical means of automobile repair, mainly to repair the body after the collision, the answer is that everything except the body repeatedly and decorative spraying is called automobile sheet metal data restoration.

Automobile sheet metal data recovery includes the analysis of automobile body damage, the measurement of automobile body, the shaping of automobile body sheet metal, tensile correction and so on. Therefore, automobile sheet metal is actually a processing technology for automobile maintenance, also known as cold work, simply put, if the body shape is damaged or deformed, it needs to be processed by the process of sheet metal. The repair of a collision vehicle is not a simple beating of the car's sheet metal, and the quality of the repair is not just about the appearance or gaps of the vehicle by the naked eye.

It is necessary to restore the three-dimensional data of the key points of the body to the state when it leaves the factory.

The recovery of automobile sheet metal data includes the analysis of automobile body damage, the measurement of automobile body, the shaping of automobile body sheet metal back, and the pulling and answering.

Stretch correction and so on. Of course, automobile sheet metal I think is a production and processing technology of automobile repair, also known as cold work, simply put, if the body shape is damaged or deformed, it needs to be processed by the process of sheet metal. The repair of a crash vehicle is not simply a matter of beating the sheet metal of the car, and the quality of the repair is not necessarily just a matter of observing the appearance or gaps of the vehicle with the naked eye.

It is necessary to restore the three-dimensional data of the key points of the body to the state when it leaves the factory.

Come to the car school to inquire and understand, their teachers can give you a detailed explanation.

If you have sheet metal, you can make a single hole and a single hole in the car, and then run the garbage with a sweat cloth, and then scrape the putty and spray paint.

Just talking about the place where there is paint, it is naturally impossible to see, because the marks of knocking have been made up by putty and paint. If you have to check whether it has been repaired, you can take it apart and look at the back of the iron sheet, such as the front fender. Then there is the frame, and if the frame is damaged, it's not that you can't see it, it's just that there are a lot of things outside that block it and you can't see it.

It is necessary to be very detailed and more labor-intensive if it is almost impossible to see if it has been repaired.

The gaps and lines of the body, these have to be adjusted to be the same as the original, and they really can't be adjusted, at least they have to be seen. The superficial work that everyone can see has to be done. As for how to adjust, this appearance part is based on the frame, first of all, the position of the frame must be the same as the original, symmetry, height and height, the error of more than one centimeter, will affect the symmetry and beauty of the appearance of the piece.

Then the appearance parts are fixed with screws, and there is also a gap for adjustment, the frame is corrected, and the appearance parts are not a big problem, just adjust it a little.

In addition, you can also look at the lacquer, the lacquer surface should be the same as the original, it is very difficult to see from an insider's eye, but it is still very easy to make it impossible for a layman to see it.