A lot of cold stamping processes are adopted in the production of automobile stamping parts. This process not only has high production efficiency, but also stable product quality and is very suitable for the needs of various types and mass production of the automobile industry.
In medium and heavy-duty cars, most of the covering parts such as body outer panels, and some load-bearing and supporting parts such as frame, carriage and other parts are stamped parts.
The steel used for cold stamping is mainly steel plates and steel strips, which account for 72.6% of the steel consumption of the whole vehicle. The relationship between cold stamping materials and stamping production is very close. The quality of materials not only determines the function of the product, but also directly affects stamping. The process design of the process affects the quality, cost, service life and production deployment of stamping products, so the reasonable selection of automotive stamping materials is an important and complicated task.
In automobile stamping parts, one part of the stamping parts directly becomes auto parts after stamping, and another part of the stamping parts needs to be processed by welding, machining, or painting before becoming car parts after stamping.
Therefore, the selection of stamping materials should not only meet the requirements of product application functions, but also meet the requirements of stamping process and subsequent fabrication (such as welding, machining, etc.).
Stamping is mainly classified according to the process, which can be divided into two categories: the distinguishing process and the forming process.
The distinguishing process is also called blanking, and its purpose is to distinguish the stamping parts from the sheet along a certain contour line, while ensuring the quality requirements of the distinguishing section.
The purpose of the forming process is to plastically deform the sheet without breaking the blank, and make a workpiece with the required shape and specification.
In actual production, multiple processes are often used for a workpiece.
Blanking, bending, shearing, deep drawing, bulging, spinning and correction are many important stamping processes.
Standardization of mold bases, mold bases, guides and development of simple molds (for small batch production), compound molds, multi-station progressive molds (for large production), and the development of rapid mold change installations, which can reduce stamping production The amount of preparation work and the shortening of preparation time can be practically used to reduce the amount of preparation work and preparation time for stamping production, and the advanced stamping technology applicable to mass production can be reasonably applied to small batches of various types of production.
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