Does auto sheet metal include electric welding?。?

It is including electric welding.

1. Commonly used hand tools for sheet metal maintenance.

Common hand tools for automobile sheet metal include: general tools, body repair tools, etc.

1.Universal tools.

Tools used in car sheet metal repair are some commonly used hand tools such as wrenches, screwdrivers, pliers and iron scissors.

2.Body repair tools.

1) Ball mallet. A multi-purpose tool for sheet metal work, used to correct bent structures, and generally used to work with pre-formed body parts. (2) Rubber hammer. It is used for gentle tapping of thin steel plates.

Welding method: 1. Air bubble. Air bubbles mostly occur in the weld bead**, the main reason is that hydrogen is still hidden in the form of bubbles inside the weld metal, so the measure to eliminate this defect is to first remove the rust, oil, moisture and moisture of the welding wire and weld, and secondly, the flux must be well dried to remove moisture.

In addition, it is also effective to increase the current, reduce the welding speed, and slow down the solidification rate of the molten metal.

2. Sulfur cracking (sulfur-caused cracks). Cracks caused by sulfides in the sulfur segregation zone entering the weld metal when welding plates with strong sulfur segregation zones (especially soft-boiling steels). The reason for this is the presence of hydrogen in iron sulfide and steel with low melting points in the sulfur segregation zone.

Therefore, in order to prevent this situation, the use of semi-calmed steel or calming steel with less sulfur segregation zone is also effective. Secondly, it is necessary to clean and dry the weld surface and flux.

3. Thermal cracks. In submerged arc welding, thermal cracks can occur in the weld bead, especially at the arc starting and arc extinguishing pits. To eliminate this crack, backing plates are usually installed at the starting and extinguishing of the arc, and at the end of the coil pair welding, the spiral welded pipe can be reversed and welded into the stack.

Thermal cracks are most likely to occur when the weld stress is high, or when the SI in the weld metal is high.

4. Involvement of welding slag. Caught in the slag is the residual part of the slag in the weld metal.

5. Poor welding penetration. The metal overlap of the inner and outer welds is not enough, and sometimes the weld is not penetrated. This condition is called insufficient weld penetration.

6. Undercut. A undercut is a V-shaped groove that appears at the edge of the weld along the center line of the weld. Undercut is produced when conditions such as welding speed, current, voltage, etc. are inappropriate.

Electric welding is the basis of the second welding, and the automobile sheet metal includes dismantling, repairing, changing, repairing the body and frame parts.

Automobile sheet metal is inseparable from these welding processes, mainly gas shielded welding, coating welding, electric welding, plasma cutting and even resistive suspension welding and other processes, it is a must, in fact, it is not difficult, practice makes perfect, it will not take long to master. The welding machine is even more necessary, and there is no way to splice the sheet metal parts together without a welding machine! The current right in the car sheet metal is still relatively promising, can earn a lot of money, I wish you success!

According to the different process characteristics of welding, common welding methods can be divided into three categories: fusion welding, pressure welding, and brazing. When assembling body sheet metal parts into the body of a car, various welding methods can be used flexibly.

The welding methods commonly used by automotive sheet metal workers are as follows. Fusion welding includes: oxygen-acetylene gas welding, manual arc welding, and carbon dioxide gas shielded welding.

Pressure welding is contact welding (spot welding and roll welding). Belonging to brazing are:

Tin brazing (soldering), aluminum brazing, and brazing (hard brazing). Hope, thank you!

Muon machine 1Working principle: The high-resistance heat generated when the low-voltage, high-intensity current flows through two iron plates melts the metal in contact, and fuses them together with the extrusion force of the welding torch electrodes, so as to achieve the purpose of welding.

2.Function: welding meson (medium for pulling), single-sided electric welding, electric heating and fire collection, carbon rod repair and heating, steel plate pressure leveling.

3.Features: fast welding speed, small heating range, metal is not easy to deform, easy to operate.

4.Advantages: Regardless of the body structure, different media can be welded to the recessed part and repaired by pulling. It integrates a variety of welding, heating and other functions, which brings convenience to the body shaping and repair.

Sheet metal is generally cold worked, and cold welding and other welding processes can be considered when repairing plate damages and bridging joints, but sheet metal itself generally does not include welding.

Sheet metal (metal plate), sheet metal has not yet had a relatively complete definition. According to a definition in a foreign professional journal, it can be defined as: sheet metal is a comprehensive cold working process for metal sheet (usually below 6mm), including shearing, punching, composite, 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.

Sheet metal (metal plate), sheet metal has not yet had a relatively complete definition. According to a definition in a foreign professional journal, it can be defined as: sheet metal is a comprehensive cold working process for metal sheet (usually below 6mm), including shearing, punching, composite, 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.

Automobile sheet metal is mainly welded by secondary welding.

Sheet metal repair machine will do.

Automotive sheet metal, including any problems that arise in the shell of the car, he needs to learn, then some small electric welding may also be possible. Because such a small electric welding is also a necessary thing for car repair.

Automobile sheet metal is generally learned to correct the automobile shell, scrape putty, repair paint, of course, including electric welding, sub-arc welding, oxygen welding.

Hello, the study of automobile sheet metal also includes the study of electric welding.

Automobile sheet metal generally does not learn electric welding, they learn some of the technical means used in the process of car exterior beauty.

Sheet metal safety protection 1. Safety protection specifications and protective equipment wearing requirements;

1. Requirements of operation specifications and knowledge of fire prevention.

Sheet metal basic training 1, sawing, drilling, chisel, hinging, riveting; 2. tapping and threading; 3. Bend, put the edge and close the edge.

skills such as arching, curling and biting, and making ribs; 4. Standardized use of measuring tools.

Body repair and cutting technology 1, gas cutting technology of metal parts and plastic parts;

Second, the use of cutting tools (ion gas cutting machine, etc.).

Body repair welding technology 1, body repair tools; 2. The safety of the full tool; 3. Safety of power tools; 4. The use of sheet metal hammer and file; 5. The use of shape repair machine; 6. Shrinkage of sheet metal bowls; 7. Maintenance of fenders; 8. Maintenance of plastic parts; 9. Repair of the aluminum itself.

Body deformation measurement and evaluation 1. Cognition of the basic steps of automobile collision deformation diagnosis; 2. Body structure and characteristics The impact effect of various materials in the body; 3. Analysis of the damage form and damage degree of the body panels.

Fourth, the replacement of body panels.

1. Classification of its own composition; 2. The structure of the car; 3. Disassembly and adjustment of the engine cover; 4. Disassembly and adjustment of the back cover; 5. Disassembly and adjustment of vehicles and accessories; 6. Disassembly and adjustment of front and rear safety machines; 7. Disassembly and adjustment of front and rear windshields; 8. Tools for general purpose.

Body Correction and Repair 1. Gas cutting technology for metal parts and plastic parts;

2. The use of cutting tools (ion gas cutting machine, etc.).

Generally speaking, the basic equipment includes shearing machine, CNC punching machine, laser, plasma, water jet cutting machine, bending machine, drilling 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, folding, welding, surface treatment, etc.

Sheet metal is sometimes used as a wrench, the word ** in English, generally some metal sheets are stamped by hand or die to produce plastic deformation, forming the desired shape and size, and can be further welded or a small amount of mechanical processing to form more complex parts, such as chimneys, iron furnaces, and car shells commonly used in the family are sheet metal parts.

Modern sheet metal processes include: filament power winding, laser cutting, heavy machining, metal bonding, metal drawing, plasma cutting, precision welding, roll forming, metal sheet bending forming, die forging, water jet cutting, precision jointing, etc.

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

Summary. Automotive sheet metal welding can use two methods: brazing and oxygen welding. Brazing is mainly used to repair the small area damage of the body and repair welding thin steel plate, the brazing temperature is low, the thermal impact on the sheet metal is small, and it is a good sheet metal connection method.

Oxygen welding, on the other hand, requires the use of oxygen and acetylene for high-temperature oxidation, which can weld medium and thick steel plates, and can weld steel structures in body parts. In general, depending on the specific situation, it is important to choose the right welding method according to the material of the sheet metal and the size of the damage.

Can you elaborate on that a little bit more?

Automobile sheet metal welding can use two methods: brazing and oxygen welding. Brazing is mainly used to repair the small area damage of the body and repair welding thin steel plate, the brazing temperature is low, and the thermal impact of the open and vertical on the sheet metal is small, which is a good sheet metal connection method. Oxygen welding, on the other hand, requires the use of oxygen and acetyne for high-temperature oxidation, which can weld medium and thick steel plates, and can weld steel structures in body parts.

In general, depending on the specific situation, it is important to choose the right welding method according to the material of the sheet metal and the size of the damage.

Welding as an industrial "tailor" is a very important means of processing in industrial production, the quality of welding plays a decisive role in the quality of the product, so what is the future development of welding technology.

First, the industry prospects.

With the development of production, welding is widely used in aerospace, aviation, nuclear industry, shipbuilding, construction and machinery manufacturing and other industrial sectors, in China's economic development, welding technology is an indispensable means of processing. After entering the 21st century, welding is an important part of the manufacturing industry, and the rapid development, so it has brought unprecedented development opportunities to the welding industry.

At present, China consumes 300 million tons of steel every year (about tons of welding dust and joint structure), and about 750,000 welding machines are needed, and the welding industry will continue to grow in the next 8 or 10 years, and many excellent welders in the market have a monthly salary of more than 10,000 yuan, and the salary is also very considerable.

Second, advantages. 1. This major does not have a high status in the society, but this major still has good development prospects in the future.

2. This major is very suitable for boys, and it is very unsuitable for girls, because the strength of girls cannot meet the requirements.

3. Professional prospects.

The prospect of welding is very good, and welding is widely used in industrial sectors such as aerospace, aviation, nuclear industry, shipbuilding, construction and machinery manufacturing. In the manufacturing industry of the Chinese people, welding is an indispensable means of processing, but the current number of welding talents is far from meeting the employment needs of the society, especially the extreme lack of talents in arc welding, carbon dioxide protection welding, argon arc welding, etc., which has created a large demand for welding skills, urgent demand and high salary.

Fourth, expansion, basic knowledge.

The basic form of deformation is common.

The basic forms of common welding deformation are as follows: the deformation of the length shortening (longitudinal shrinkage) and width narrowing (transverse shrinkage) caused by the butt welding of the plate groove; angular deformation after butt welding of the plate groove;

The angular deformation of the component after welding is different along the longitudinal axis of the component and the distortion deformation caused by the inconsistent longitudinal contraction of the flange and the web of the component;

After the thin plate is welded, the compressive stress area of the base metal causes the wave deformation caused by warping due to instability; Due to the asymmetry of the longitudinal and transverse contraction of the weld relative to the neutral axis of the component, the overall bending of the component is called bending deformation.

The broad market prospects of automobile sheet metal welding keys make many people willing to engage in this industry, and the employment prospects of this industry are still very good, but if you want to develop in this industry, you must have professional technology and skilled operation experience.

Automotive sheet metal[1] (metal plate; sheetmetal in english) is a technical means of automobile repair, in this regard, automobile sheet metal is equal to automobile sheet metal repair, refers to the car body to be repaired after the collision, that is, in addition to the body anti-corrosion and decoration of the spraying work. 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 say that directly, if the appearance of the body is damaged and deformed, the process of sheet metal is needed. Car collision repair has been made up of the original"Smash and pull weld repair"It has developed into a body secondary manufacturing assembly. 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.