rapid injection molding prototyping.The influence of cooling rate on the performance of aluminum alloy die-casting parts

　　Does cooling rate affect the performance of aluminum alloy die castings? The cooling rate will definitely have an impact on the quality of aluminum alloy die castings. Cooling of aluminum alloy die castings is a process of thermal expansion and contraction. If one part of the aluminum alloy die castings shrinks quickly while the other shrinks slowly, the internal effects of the aluminum alloy die castings will cause deformation and casting defects in the die castings.

　　The influence of cooling rate on the performance of aluminum alloy die castings is still very significant. Only by correctly grasping the cooling rate of aluminum alloy die castings can aluminum alloy die castings achieve the required quality in the die-casting state and improve the quality of aluminum alloy die castings.

　　In addition, the speed of cooling will have an impact on the internal crystal structure of aluminum alloy die castings. The faster the cooling speed, the lower the actual crystallization temperature and the greater the undercooling; On the contrary, the slower the cooling rate, the lower the undercooling, and the actual crystallization temperature is closer to the theoretical crystallization temperature. When the cooling rate is high, the grain size of the casting is finer.

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