Ask for an auto sheet metal repair case, auto sheet metal and repair

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Automobile sheet metal: It is a processing method for automobile maintenance, also known as cold work, if the appearance of the body is damaged and deformed, the process of sheet metal is needed; Automobile collision repair has been developed from the original smashing 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 automobile sheet metal, and the quality of the repair can not only rely on the naked eye to observe the appearance and gaps of the vehicle, maintenance personnel should not only understand the technical parameters and dimensions of the body, but also master the characteristics of the body material, the transmission of the characteristics of the force, the deformation trend of the body and the residual cracking force point of the state, as well as the production process of the car destruction body, such as welding process;

Automobile repair: refers to the use of all available means and technologies to restore the shape, performance, and function of the damaged vehicle, and the closing of the sail and technical behavior; The principle is to repair according to the situation, and its purpose is to restore the original use value and technical condition of the vehicle, assembly, and parts.

The trick of automobile sheet metal repair: 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 based on the size of the damaged part of the sheet metal part welded on a certain number of flat gasket pull rings, flat gasket pull rings are called traction medium, the wire rope is threaded into the medium, and then the steel wire is pulled by manpower or machinery, and the damaged parts of the sheet metal parts are pulled outward by force through the medium, so that they can be restored to their original position and shape, especially for the deformation of a large area, the sheet metal parts of the double-layer structure, the parts that are not easy to get closer, the corner transition and the door column, etc., are more convenient to repair by pulling the ring traction method; 2. Heating shrinkage methodLocal heating shrinkage method is a common method for sheet metal repair. The damage and deformation of sheet metal parts are mainly the tensile deformation of related parts, and the tensile stress can be restored by heating and shrinking method to eliminate tensile stress; 3. Hand hammer and top iron repair methodThe hand hammer and top iron repair method are 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.

As an auto mechanic, you must be proficient in the auto sheet metal repair process. Because automobile sheet metal maintenance is not only related to the appearance of the vehicle, but also directly related to the safety of the vehicle. Below, we will introduce the relevant knowledge and skills of automobile sheet metal repair in detail.

Automobile sheet metal repair is a high-tech work, which requires maintenance workers to maintain and modify the sheet metal with various tools, and to ensure that the repaired vehicle is guaranteed to be the same as the original vehicle appearance and structure as much as possible. The necessity, process, tools and precautions of automobile sheet metal repair must be mastered, and only by continuous learning and practice can we gradually improve our own maintenance level.

3.Pay attention to safety: When carrying out welding and oxidation work, safety measures must be taken to prevent accidents.

2.Dimensioning: The length, width, height, and geometry of the body parts must be measured prior to repair and dismantling to ensure that the dimensions and appearance of the repaired body are the same as before.

Automobile sheet metal repair is a high-tech work, which requires maintenance workers to maintain and modify the sheet metal with various code sales tools, and to ensure that the repaired vehicle is guaranteed to be the same as the original vehicle appearance and structure as much as possible. The necessity, process, tools and precautions of automobile sheet metal repair must be mastered, and only by continuous learning and practice can we gradually improve our own maintenance level.

4.Metal Hammer: The squire is used for hammering and adjusting during sheet metal repair.

2.Electric drill: used for drilling holes in sheet metal repair.

1.Mill: used for sheet metal grinding.

1.Bending or protruding of the repaired area: Due to unskilled or unfamiliar knowledge of the properties of the material, the repairer will over-polish the repair, resulting in the bending or protrusion of the repaired area.

Therefore, in the maintenance process, we must pay attention to the strength and avoid excessive polishing.

In the process of automobile sheet metal repair, there are many kinds of tools that need to be used, which are listed as follows:

In the face of car damage, it is necessary to determine the maintenance plan before going to the car sheet metal. What are the main issues to be considered in determining the maintenance plan, and what are the principles for determining the maintenance plan? Let's talk about it at Bian Xiao.

1) Determine the main issues that should be considered in the maintenance plan.

After the diagnosis of car damage, a scientific repair plan should be formulated and the inspection should be standardized.

Visual inspection: Visually inspect the car for damage.

Touch: Touch the damaged part of the car to check for damage.

Check the opening status of the door to determine whether the chassis parameters of the car have changed. Quiet stool.

Measure whether the physical parameters meet the standards.

The main work at this stage is like a cover-up.

According to the guidance method of maintenance parameters, determine the specific repair methods of direct damage, indirect damage and inertia effect damage. According to the application of materials in each part of the body, determine the welding process that needs to be adopted.

Consider how to use auxiliary support positioning during the correction stretching process to ensure that the repair proceeds smoothly.

When welding replacement operations, consider how to accurately locate the parts to be replaced, so as to avoid correcting the position of the replaced parts after welding.

2) Determine the principles of the car repair program.

When formulating the repair plan, in addition to reducing the maintenance cost, the overall maintenance quality should also be comprehensively considered, such as how to ensure that the surrounding parts are not affected when the local stretching is made, how to ensure that the internal structure of the metal does not change as much as possible during cutting and welding, and what kind of drilling and grinding tools will not affect the installation. All factors related to the overall remediation plan need to be considered as thoroughly as possible so that we can be prepared for the next steps.

Automobile sheet metal is a kind of 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 decoration of the body.

Automobile sheet metal is a processing method for automobile maintenance, also known as cold work, to say that directly, if the appearance of the body is damaged and deformed, the process of sheet metal is needed. 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. Sheet metal is a type of work in auto repair, mainly for the appearance of the body, the replacement, repair, orthopedics, and paint of the external car body (such as bumpers, doors) also belong to the sheet metal work area, and there is a specific division of labor within the sheet metal, and the above content of sheet metal in the broad sense is fully covered. The sheet metal in the narrow sense is only to replace the outer car body, as well as the use of welding, shelf 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 own division of labor in the interior, what we call sheet metal, generally refers to the broad sense.

Photo by Shi Lili) 2019