die casting process

The die-casting process is the process of unifying pressure, speed and time by using three major elements: machine, mold and alloy. For metal hot processing, the existence of pressure is the main feature of the die-casting process that distinguishes it from other casting methods. Die casting is a kind of special casting method with less cutting and no cutting which has developed rapidly in modern metal processing technology. It is a process in which molten metal is filled into a mold under high pressure and high speed, and crystallized and solidified under high pressure to form a casting. High pressure and high speed are the main characteristics of die casting. The commonly used pressure is tens of megapascals, the filling speed (inner gate speed) is about 16 to 80 meters per second, and the time for molten metal to fill the mold cavity is extremely short, about 0.01 to 0.2 seconds.



The die-casting process is a process in which the three elements of die-casting machine, die-casting mold and alloy are combined organically and used comprehensively. The process of filling the cavity with metal during die casting is a process of unifying process factors such as pressure, speed, temperature, and time. At the same time, these process factors influence each other, restrict each other, and complement each other. Only by correctly selecting and adjusting these factors and making them harmonized can the expected results be obtained. Therefore, in the die-casting process, not only the manufacturability of the casting structure, the advanced nature of the die-casting mold, the performance and structure of the die-casting machine, the adaptability of the die-casting alloy selection and the standardization of the smelting process should be paid more attention to; pressure, temperature and time should be paid more attention. And other process parameters play an important role in the quality of castings. In the die-casting process, attention should be paid to effective control of these parameters.