1. Mold manufacturing: A mold with a correct and reasonable structure is a prerequisite for the smooth progress of machine production, and it plays an important role in ensuring the quality of the die and castings (the pass rate of the machine). The correct selection of the process parameters is the decisive factor for obtaining high-quality castings, and the mold is the prerequisite for the correct selection and adjustment of the process parameters. The mold design is essentially a comprehensive reflection of the various factors that may appear in the production of the product. When designing the mold, it is necessary to comprehensively analyze the structure of the die and castings, be familiar with the operation process of the machine, understand the possibility of adjusting the machine and process parameters, grasp the filling characteristics under different conditions, and consider the method of mold processing and drilling Only after the fixed form can we design a mold that is practical and meets the production requirements. Of course, the mold pattern can be finely carved according to different designs.
2. Die-casting process: Introduction to die-casting Die-casting for short is a casting method in which molten alloy liquid is poured into a press chamber, the cavity of a steel mold is filled at high speed, and the alloy liquid is solidified under pressure to form a casting. The main characteristics of die casting that distinguish it from other casting methods are high pressure and high speed. The molten metal fills the cavity under pressure, and crystallizes and solidifies under higher pressure, the common pressure is 15-100MPa. The molten metal fills the cavity at a high speed, usually 10-50 meters per second, and some can exceed 80 meters per second (the linear velocity of the cavity through the inner gate—the inner gate speed), so the molten metal is filled The molding time is extremely short, and the cavity can be filled in about 0.01-0.2 seconds (depending on the size of the casting).
3. Stamping process: The stamping process can be roughly divided into two categories: separation process and forming process (also divided into bending, drawing, and forming). The separation process is to separate the stamping part and the blank along a certain contour line during the stamping process. At the same time, the quality of the separated section of the stamping part must meet certain requirements; the forming process is to make the stamping blank undergo plastic deformation without damage. And transformed into the required finished shape, but also should meet the requirements of dimensional tolerances. According to the temperature during stamping, there are two methods: cold stamping and hot stamping. This depends on the strength, plasticity, thickness, degree of deformation, and equipment capabilities of the material, and the original heat treatment state and final use conditions of the material should be considered. Through the pressure of the machine, the upper and lower dies squeeze the plate between the dies to reach a certain pressure, and the pattern of the die is deeply imprinted on the plate.
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