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The definition of die-casting process

The definition of die-casting process

Pressure casting is special casting method in modern metal processing technology developed rapidly in a few non-cutting. It is the process of molten metal at high speed under high pressure mold filling, solidification and formed at high pressure castings. High voltage high speed is the main characteristic pressure casting. Commonly used pressure of dozens MPa, filling speed (ingate speed) is about 16 to 80 m / sec, the molten metal filling the mold cavity a very short time, about 0.01 to 0.2 seconds.
Since this method of producing products with high production efficiency, simple process, high casting tolerance level, good surface roughness, high mechanical strength, can save a lot of machining processes and equipment, conservation of raw materials, etc., so now become in China's foundry industry is an important part.

Die-casting process is the three elements of die casting machine, die casting mold and alloy composition and be organically integrated use in the process. The die-cast metal pressing process to fill the cavity, and is the pressure, speed, temperature and time and other process factors to obtain a uniform process. At the same time, these technical factors and influence each other, mutual restraint, and complement each other. Proper selection and adjustment of these factors make it coherent, in order to obtain the desired results. Therefore, in the die-casting process not only pay attention to the process of casting structure, die-casting mold progressiveness, die-casting machine performance and excellent resistance structure, die-casting alloy smelting process chosen adaptability and normative; more should pay attention to the pressure, temperature and time and other parameters important role in casting quality. In the die-casting process should focus on effective control of these parameters.



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