Is it better to weld automotive sheet metal or electrically, and what is the method of automotive sh

Foshan Dezhan Sheet Metal Co., Ltd. covers an area of 90,000 square meters, with a construction area of 70,000 square meters, fixed assets of more than 300 million yuan, and an annual output value of more than 500 million yuan; There are more than 1,700 employees, including more than 100 engineering and technical personnel and more than 100 quality technicians; The company has a beautiful environment and is a high-level garden-style modern factory. The company has more than 600 sets of the world's most advanced high-precision machinery and equipment: including laser cutting machines and high-precision CNC punches from TRUMPF in Germany; LGMAZAK CNC machine; Japan AMADA precision CNC punching and bending machine; Large pneumatic punching press, multiple automatic stamping production lines; CNC lathes, grinding machines, milling machines and other hardware processing equipment have formed a strong production capacity for sheet metal, stamping and machining.

It is recommended that you learn automotive sheet metal. In the future, car repair has a great future, and sheet metal is one of the most important maintenance skills. In the process of car maintenance, electrical welding is not very useful.

Some cars don't require electrical welding at all. In addition, electrical welding is a highly specialized skill, and it is by no means possible to become proficient in three or two months. The main use of electrical welding is in the machinery manufacturing industry, not in the maintenance industry.

The electric welding you are talking about should be manual arc welding. Commonly known as electrode welding. The operation method is a bit welding, drag welding.

According to the different spatial position of the weld, it can be divided into flat welding, vertical welding, horizontal welding, and vertical welding. Different operation methods of welding rods are also different, so I will not go into detail here. When welding electrical vehicles for car maintenance, pay attention to fire prevention, especially near the fuel system.

Then pay attention to turn off the circuit to prevent overcurrent from burning out the circuit. There will be a lot of toxic gases in the process of electrical welding work, it is not recommended that you learn this, you are still young.

Both of these jobs are very easy, as long as they are for others, the money earned is about the same every month, and it is better to open a small shop by yourself. The time of car sheet metal learning is longer, there is no electrical welding fast, and you have to be an apprentice to others, or there is a good car is not to let a new manual, the car does not learn sheet metal alone, it is all learned together with painting. If you are not married, I personally do not recommend studying this major, and if you want to earn money after two years and quit two years ago, you can also do it.

Because the work in electrical welding is always squatting, the heat generated during welding is not good for the reproductive system, the smoke of electric welding is not good for breathing, not to mention the sheet metal spray paint, not to mention the bad breathing, the quality of the paint used in some stores is not good, the impact is greater, dry every day, dry for two or three years, some people's bodies can not withstand it, earn some money and do something else.

Welding technology is faster to learn, and the results are also very fast, you can get a high salary after graduation, sheet metal technology is relatively difficult, and the results are not so fast, and the salary will be lower when you first enter the industry.

Auto sheet metal is not easy to learn, but it is easy to find a job, 4S shops, repair shops are everywhere, and it is relatively easy to find a job. However, sheet metal work is also more tiring!

I feel that electric welding is better.

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.

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.

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.

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.).

It's all very good, car beauty mainly includes paint treatment, film, interior maintenance, electrical modification, body beautification, etc., sheet metal painting is mainly welding treatment, plastic repair, as well as body positioning, paint debugging process, topcoat spraying, tire maintenance, etc., the future is very good, depending on your personal interest and want to learn it!

If mine is helpful to you, remember to light it up, thank you!

That's a good question, I hope it helps, hopefully, thank you! The automotive industry is now quite popular, with good employment prospects, large employment needs, and a wide market. Electromechanical is the older the more popular, the more popular the sheet metal spray beauty is fast, the salary is high, now every household has a car, car maintenance is a trend!

Hope it helps, hope, thank you!