Does it have a big impact after sheet metal touch ups? The front door and the back door are recessed

The structure of the door is relatively simple, and such scratches can be repaired by sheet metal painting. As long as the master of the paint mixing skill passes, or can use the original car paint, it is almost impossible to see in the later stage.

1. It will destroy the phosphating layer and the electrophoresis layer, which play a very important role in preventing the corrosion of metal substrates. After the breakage, the ordinary repair process cannot be repaired. So, a lot of cars that have been painted with sheet metal are prone to rust, and that's why.

2. After the metal is repaired by sheet metal, the surface will be uneven, and a filler called putty is generally used to fill the surface. This kind of putty has a different expansion coefficient from metal, and it will crack and sink after a long time, which will affect the appearance of the surface.

3. In the painting workshop of the automobile factory, the paint should be dried at a high temperature of about 200 degrees Celsius, which is very hard and very strong, while the repair shop can only do 70 80 degrees Celsius at most, so the hardness and strength of the baked paint are not as good as the original paint.

4. No matter how sophisticated the painting technology is in the later stage, there will be color difference after a long time, and the painted surface will age faster than the original paint. This is because the refinish paint is not as good as the original paint, and there is a big gap between the spraying process and the environment and the original paint.

5. After a large area of paint is touched, it will have an impact on the value retention rate of the vehicle, for example, under the same car condition, the car that has been painted is cheaper than the car with slight scratches and no paint.

Depending on the situation, the traceless depression is repaired, and there is no trace when it is repaired.

The so-called automobile dent repair technology, also known as micro sheet metal, is that there is no need to destroy the original car paint for body concave repair, the principle is actually very simple, it is based on optics, mechanics, and the principle of lever.

The pits of different depths are slowly restored to the original appearance.

1. Car dent repair** is not simply related to the situation of the dent itself, but also related to the ability of the repair master, so don't blindly pursue low-cost dent repair, the most important thing is to see the effect;

2. After all, each master has different requirements for himself, the repair effect is good and bad, and the real repair is the same as the original paint, it is not a matter of time, it is experience and understanding;

3. Therefore, when you repair, you must choose a well-known local car dent repair shop, small shop, and backpacker.

It's really unreliable, and the asking price is not low.

1.Align the traction spacer coated with hot melt adhesive to the center of the depression and gently press it with your hand. ,.. after a few minutes

2.For the location, the tool hook can't reach in from the side, so you can only remove the door and find a suitable tool to prepare to remove the door.

3.First of all, remove a few fixing screws hidden in the interior panel, and then break the interior panel evenly and forcefully, and we repair the sharkskin dent.

4.The next thing is to dismantle the wiring harness, pay attention to remember the original position of the wiring harness and the corresponding interface, don't disassemble it when you ,.. a while

5.The interior is basically dismantled, so that the hook can reach the depression, and it is generally OK to find a special iron fixing bracket to fix the door ,..

This can be repaired, and the bumper will have to be replaced. Generally, three days is enough.

First of all, sheet metal correction is a pre-shaping process for automobile sheet metal painting, and then painting, and the first primer fills the sand marks and micropores at the bottom layer of the workpiece, increasing the adhesion of the lower coating, and also has the effect of defect indication.

The primer prepares a well-lubricated working surface for the topcoat, completes the last process of all primer work, increases the adhesion of the participating layer and has a certain isolation effect, so as to ensure that the quality of the topcoat is not messy.

Paint disposal is the last process of the topcoat, after the paint surface is dry and solid, the defects on it are disposed of, and the best efforts will flow a department that is not very satisfactory, then as long as the later stage is made up, the coarse wax composed of pumice or clay components is used to stop grinding and cutting, and the sandpaper traces are disposed of.

1: Sheet metal correction.

After we determine the plan, the first step is actually correction, and our maintenance personnel will use the corresponding tools and techniques to repair the deformed parts of our car according to the deformed Chengdu of our car. There are many ways to make sheet metal, including cutting, stretching and grinding, etc., in short, they will use various methods to restore our car to the maximum extent.

2: Finalization. When our car is corrected, it will definitely be different from other parts, because the vehicle has received damage after all. At this time, the maintenance personnel need to shape the vehicle, apply putty to shape our body, and make the damaged parts as much as possible as before we were damaged. This operation is basically the same as our usual wall scraping putty, which requires patience and carefulness, which is a great test of the skills of maintenance personnel.

3: Spray paint. The third step is to spray paint, the process of painting is more troublesome, we must know that this work must be in a dust-free environment. The steps must also be in place, showing the primer, followed by priming in the spraying process, followed by primer in sanding, mixing and finally topcoating. In short, this process is very troublesome, but it should not be careless and sloppy, and in the end, we must not forget to dry the paint.

4: Paint finish.

The last step is to deal with the paint, if you want to make the car really not see the flaws, it is better to refine, as long as the problem is not very big, there will be no obvious difference, the whole process is relatively fine, this step seems simple, but it is essential. In fact, it is the finishing work, but it requires patient inspection, careful polishing, and grinding away the imperfections.

1. Sheet metal correction is the pre-shaping process for automobile sheet metal painting.

Second, scraping (molding) car body after sheet metal correction there are some defects that can not be compensated for sheet metal work, even if it is replaced with new parts, there will be unsatisfactory **, in order to achieve more perfect and refined, it is necessary to use the sculpture technology to compensate for the defects.

3. Automobile sheet metal painting: Automobile sheet metal painting is usually divided into 3 steps.

1.First primer: fills the sand marks and micropores at the bottom of the workpiece, increases the adhesion of the underlying coating, and also has the effect of defect indication. -

2.The primer prepares a well-lubricated working surface for the topcoat, completes the last process of all primer work, increases the adhesion of the participating layer and has a certain isolation effect, so as to ensure that the quality of the topcoat is not messy.

3.Topcoat: Topcoat is divided into single-layer paint and multi-layer paint, which is a color definite layer and a decorative maintenance layer.

Fourth, sheet metal spray paint paint disposal: paint disposal is the last process of the topcoat, after the paint surface is dry and solid, the defects on it are disposed of, and the best efforts will flow a department that is not very satisfactory, then as long as the later stage is made up, it is called mirror disposal. First use 1200-2000 mesh beauty sandpaper to stop leveling and grinding 2500 mesh can be used when necessary, and then use the coarse wax composed of pumice or clay components to stop grinding, dispose of sandpaper traces, five: the next step is to stop grinding with fine cutting wax without silicone, dispose of the coarse wax traces, and then use the restorer to deal with to achieve a perfect luster, and then use the mirror treatment agent to completely remove the halo and smear, sheet metal painting is a maintenance project with high technical content requirements and multiple processes.

Sheet metal is a comprehensive cold working process for metal sheets (usually below 6mm), including shearing, punching, lamination, folding, riveting, splicing, forming (such as automobile body) and so on. Its distinctive feature is that the thickness of the same part is the same.

Generally speaking, the basic equipment of sheet metal process includes shear machine, CNC punching machine, laser, plasma, water jet cutting machine, bending machine and various auxiliary equipment such as: uncoiler, leveling machine, deburring machine, spot welding machine, etc.

Generally, the four most important steps of the sheet metal process are shearing, punching, rolling, welding, surface treatment, etc.

Depending on the extent and location of the damage, try to repair it from the inside if it can be repaired from the inside of the door.

Go to the repair shop for repairs, and the sheet metal master will naturally get it done for you.

If the body is depressed and painted, it is recommended to paint sheet metal, about 300 to 500, but if there is no paint off and you are very concerned about the original paint, you can try the paint-free car dent repair technology, no need to destroy the original car paint for body concave repair, the principle is actually very simple, it is based on optics and mechanics, and the use of the lever principle to slowly restore the pits of different depths to the original appearance, look at the following picture You can see it at a glance.

The specific size of your depression can be determined, similar to the picture in the picture, generally about 300 yuan can be done.

The picture below is the repair effect of our sharkskin car dent repair direct store**, the first one**The black border area on the left is the appearance of the original painted body, and the right is the appearance of the body after repair, how can you feel the specific effect, but after all, there are so many stores in the country that the car dent repair can not be generalized, so I recommend that you still go to the regular brand store to repair, so that the technical level will be *** and**fixed, unlike small shops, which will only shout prices all over the sky.

Clutch common faults.

1: If the clutch is too high, check the gap between the guide rods of the sub-pump, the gap of the guide rods of the main pump, and whether the clutch plate is burned. Whether the model of the master cylinder is consistent with the original car.

2: The clutch is too low or the separation is not clear, check whether the guide rod gap between the main pump and the sub-pump is too large (the sub-pump is generally 3 5 mm, the main pump is 1 2 mm), whether there is air in the oil circuit, whether the fork is deformed or the fork shaft is deformed and desoldered. Separate the lever from the adjustment screw if it is deformed or broken.

Whether the model of the master cylinder is consistent with the original car. (Generally, the main pump is stepped on to the end, and the stroke of the sub-pump reaches 12 15 mm, which can basically eliminate the gap between the main pump and the sub-pump and the oil circuit problem).

Three: when high and low, this problem is more special, I will talk about the common, clutch for a long time do not step on the first foot clutch is very low, check whether the clutch pump clearance is too large, whether the return spring is intact, return normal;

If there is a kind of inspection, the pump clearance is normal, and the main pump has no clearance, so it is necessary to check whether there is air in the oil circuit or whether the master pump has been damaged. When the clutch is stepped on, it will slowly and up on its own, which is manifested as not lifting the clutch car and walking on its own without lifting the clutch when stepping on the clutch for a period of time on the gear, and the clutch master cylinder is damaged.

There is also a kind of clutch in normal use will slowly become very high, after a period of time do not step on the clutch it returns to normal, serious when the vehicle clutch slips can not walk, loosen the exhaust screw and a large amount of hydraulic oil is discharged after normal, check whether there is no gap between the guide rod of the master cylinder, check whether there is dirt inside the master cylinder, clean the master cylinder.

If it's not awesome, it's totally fine. If the deformation around the door is very severe, it is also recommended to replace it, which will affect the sealing.

It can be dented, and if you want to repair it, you need to use automotive sheet metal technology, and the sheet metal worker workflow is explained in detail.

1: Dismantling of the whole car (removing all sheet metal parts that may be involved or the parts that are painted are carried out).

2: Car body repair (replacement, stretching, welding and other repairs caused by the impact or overturning of the iron plate dentation, beam bending, dimensional displacement and other injuries).

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

4: Strict repair of sheet metal parts (the repair of the door lights and other sheet metal and displaced machinery and electrical appliances and other non-sheet metal parts, which requires superb skills and unremitting patience to achieve accurate installation and beauty).

5: Whole vehicle installation (installation and fixing of all sheet metal parts after painting, as well as testing of all movable sheet metal parts).

Automobile sheet metal is generally calculated by face**, and because the sheet metal will be painted, it will change according to your requirements, it is recommended to go directly to the store for consultation.

Automobile sheet metal (metal plate) is a technical means of automobile repair, in this regard, automobile sheet metal is equal 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 decorative spraying of the 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.

Automobile sheet metal is a processing method for automobile maintenance, also known as cold work. To put it bluntly, if the appearance of the body is damaged and deformed, the process of sheet metal is required.

Automobile collision repair has developed from the original "smashing, pulling and welding repair" to the secondary manufacturing assembly of the body. The repair of the collision accident vehicle is no longer a simple knocking on the sheet metal of the car, and the quality of the repair cannot be observed by the naked eye alone. Maintenance personnel should not only understand the technical parameters and dimensions of the body, but also master the characteristics of the body materials, the transmission of the characteristics of the force, the deformation trend and stress points of the body, and the production process of the body, such as welding process.

On the basis of mastering these knowledge, maintenance personnel should also use advanced measurement tools to judge the direct and indirect damage and deformation of the body through accurate three-dimensional measurement of the body, as well as the hidden dangers due to the deformation of the body, and formulate a complete body repair plan, and then cooperate with the correct maintenance process and accurate three-dimensional data of each key point of the body, restore the key points of the body to the original position, and restore the damaged body to the state when it left the factory.

To put it simply, if the vehicle has an accident or the sheet metal parts fail, the sheet metal repair and painting are required, which is the requirement for the appearance and structure of the vehicle to be restored to the factory.