As the name implies, automotive stamping parts are metal stamping parts that constitute automotive parts. In automotive stamping parts, one part becomes automotive parts directly after stamping, and the other part can only become automotive parts after stamping through welding, mechanical processing, or painting process.

Auto sheet metal processing is the technology to process sheet metal. It includes not only the traditional cutting, blanking, bending and forming methods and process parameters, but also the structure and process parameters of various cold stamping dies, working principles and operation methods of various equipment, as well as some new stamping technology and process. More and more sheet metal processing enterprises realize that proper surface treatment can play a very good role in decoration and protection of the product surface, improve the product's "face value", and then improve market competitiveness.

在各种定制橱柜底盘，空调钣金零件中加工汽车钣金零件时，需要对它们进行表面处理，例如喷涂，电镀，阳极，电泳等。由于某些钣金材料不具有防锈，防腐蚀的功能，因此需要进行表面处理以达到防锈，防腐蚀的效果。另外，表面处理还可以达到美化产品外观的效果。

Spray painting of automobile sheet metal parts is an operation with professional skills. In operation, attention should be paid to the uniformity of the spray paint, the smoothness of the paint surface, and whether the color of the spray paint is consistent with the color of the car body. Therefore, when our car bumps into the need for spray painting, we should first understand that spray painting of automobile sheet metal should pay attention to one. Some things, in order to do services will not be pitted, then what matters need attention?

众所周知，汽车车身上有数百个零件，而自动冲压零件占车身的很大一部分。汽车零件的硬件冲压是利用常规或专用冲压设备的力量，对具有一定形状，尺寸和性能的产品零件进行生产的技术，使钣金件直接在模具中受到变形力和变形的作用。为了获得好的冲压产品，有必要做好冲压前的设计。

In our life, we often rust our daily necessities for some reasons, but there are the same problems in my sheet metal processing console. Because of the storage problem, when we put the sheet metal processing console in the basement, its humidity will be relatively high. After being damp, we should timely carry out moisture-proof and moisture-absorbing work on it.

Residual medicines and additives are vomited from the inside of precision stamping parts, and the tin layer attached to the plating is easily corroded by these substances. It causes surface oxidation and yellowing of the coating. Inadequate treatment and no drying of the workpiece can also lead to yellowing of the coating. Adhesion of tetravalent tin, excessive additives, zinc impurity pollution in bath (less likely), insufficient thickness of coating, iron impurity pollution (phenomenon is not easy to find in the process of plating) and storage environment. These are the reasons that lead to yellowing of precision metal stamping parts.

如今，五金冲压件在中国非常普遍，并且大小制造商众多。五金冲压件在冲压过程中，如果不注意表面很容易损坏，那该如何解决这个问题呢？

Precision stamping die can be classified into three categories as follows: engineering die, also known as "single process die", refers to the die that can only complete one stamping process in one stroke of stamping. After the completion of this project, it is necessary to take the product out of the mould manually or with a manipulator, and then put it into the mould of the next station to continue production, until the latter process of the mould is completed, the whole product is not completed. Mould maintenance is simple, but the production is time-consuming and laborious, which requires more labor and time costs, and the rejection rate of products is high.

Stamping process can be roughly divided into separation process and forming process (also divided into bending, deep drawing, forming) two categories. Separation process is to separate stamping parts and blanks along a certain contour line in the stamping process, and the quality of the separated section of stamping parts must meet certain requirements. Forming process is to make the stamping blanks plastic deformation without destroying and transform into the required finished product shape, and also to meet the requirements of the size of the common. Poor and other requirements.

In the production process of automobile sheet metal parts, there are certain requirements for stamping technology and stamping die. In high-speed stamping equipment and multi-function stamping die, only "high-speed" and "multi-function" can not meet the production requirements, only to achieve continuous conveying of sheet metal to stamping machine and stamping die, and stamped sheet metal workpiece can be removed from the stamping die and conveyed to the next stamping worker in a very short time.

Metal plastic forming is a process in which metal materials are processed by means of their plastic properties to give them the desired shape. After forming, the structure and properties of metal materials are improved and improved.

The anti-collision beam of automotive parts is by no means the fundamental factor to ensure the safety of the personnel in the car, but it is meaningful to the safety. Its function is reflected in the low-speed collision, while in the high-speed accident, the anti-collision beam of automotive parts is powerless.

It is obvious that the necking of automobile stamping parts is difficult to detect. First of all, the mechanism of material deformation is understood. The process of material stretching and plastic deformation is mainly composed of three stages: uniform elongation stage, local elongation stage and cracking stage.

洛氏硬度计用于金属冲压件的硬度测试。形状复杂的小型冲压零件可用于测试平面是否很小，无法在普通台式洛氏硬度计上进行测试。

Generally speaking, the working rhythm of stamping machine determines the production rhythm of stamping production line. The working time of the feeding and unloading mechanism and the workpiece conveying mechanism of the stamping production line should coincide with the stamping time of the stamping machine tool. In order to reduce or eliminate the assistant time of punching machine and die as much as possible, the loading and unloading device of sheet metal and the transport mechanism of workpiece must be able to complete the tasks of loading and unloading and conveying of workpiece as soon as possible so as to reduce the downtime of punching production line.

车身安装在底盘的框架上，由驾驶员和乘客携带或装载。公共汽车主体通常是整体结构，而卡车主体通常由驾驶室和集装箱组成。

许多车主认为，喷涂钣金零件后需要使用相同颜色的汽车漆，因此在选择钣金零件时会忽略钣金零件的喷涂过程，认为这并不重要，但是这种想法是不正确的。为了防止氧化和生锈，钣金零件在出厂前需要进行喷涂。确实，更换钣金零件后的喷涂连接件不仅可以色调其颜色，而且还可以保护并防止氧化。

​Body straightening refers to the process of repairing parts damaged by accident or fatigue to the "state" of the technical standard when the vehicle leaves the factory through a certain external force.