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The Differences between Injection Molding and Die Casting

The Differences between Injection Molding and Die Casting

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    The Differences between Injection Molding and Die Casting



    Injection Molding Die casting



    Product applicationPlastic productsMetal products
    ProcessInjecting a heated and melted material into a mold cavity under high pressure and cooling and solidifying to obtain a molded product


    A molten alloy liquid is poured into a pressure chamber, a cavity of a steel mold is filled at high speed, and the alloy liquid is solidified under pressure to form a casting.



    Temperature  controlThe barrel temperature ,nozzle temperature and mold temperature need to control.The mold cavity temperature exceeds


    700 degrees
    Pressure control①The plasticizing pressure depends on the type of plastic used.Metal liquid fills cavity under pressure, the common pressure is 15-100MPa.

    ②The injection pressure is based on the pressure applied to the plastic by the top of the plunger or screw (converted from the oil pressure)
    Molding cycle①The filling time is about 3-5 seconds.①The metal liquid fills the cavity  usually at 10-50 m / s, and some can exceed 80 m / s.

    ②The dwell time is about 20-120 seconds ( special thick parts can be up to 5-10 minutes )② The cavity can be filled in about 0.01-0.2 seconds (depending on the size of the casting).
    Feature①Production is fast due to the flexibility in the molding process①Efficient process with a high degree of accuracy

    ②Plastic Injection molds can accommodate different plastic or polymer materials②No need secondary processing

    ③Fillers can be used in plastic molds to increase strength③Complicated designs can be easily made

    ④Efficient process with very accurate finishes③Produces higher-quality products with better tolerance that will last longer

    injection-molding-and-die-casting.jpg

    References
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