What is the process of automobile production

The process of automobile manufacturing industry mainly has stamping process, welding process, painting process, assembly process, that is, people commonly known as the automobile "four major processes". Here is what I organize the process of automotive production, for your reference, I hope to help friends in need.

1, stamping process:

Stamping is the first step of all processes. First of all, the steel plate in the cutting machine to cut out the right size, this time is usually only punching, edge cutting and other actions, and then enter the real stamping molding process. Each workpiece has a mold, as long as a variety of 'molds installed on the press bed can be punched out a variety of workpieces, the role of the mold is very large, the quality of the mold directly determines the quality of the workpiece.

2, welding process:

Stamping good body plate local heating or simultaneous heating, pressurization and join together to form a body assembly. The most widely used in automotive body manufacturing is spot welding, welding directly affects the strength of the body. So many manufacturers in their own body structure will emphasize their own special "laser welding". Most domestic manufacturers are still manual welding, which is of course to save costs.

3, painting process:

Painting has two important roles, the first car corrosion prevention, the second to increase the beauty. Painting process is more complex, the technical requirements are relatively high. There are mainly the following processes: pre-paint pretreatment and primer, paint spraying process, drying process, etc., the whole process requires a large number of chemical reagents and fine control of process parameters, the paint materials and the requirements of the processing equipment are very high, so the coating process is generally the company's technical secrets.

4, assembly process:

Assembly is the body, engine, transmission, instrument panel, lights, seats and other parts installed together. The level of assembly process directly affects the performance of the car, we will see some cars wrenching seams are more uniform, while some cars wrenching seams are not uniform, which are more related to the assembly process.