Hot Chamber Die Casting

Hot chamber die casting is a technique that utilizes alloys with low melting temperatures like zinc and magnesium to manufacture high-precision die cast products. The hot chamber process cannot accommodate alloys with high melting temperatures, as it will result in damage to the gooseneck, nozzle, and other components of the casting machine. 

The Hot Chamber Die Casting Process

Unlike the cold chamber machine, the hot chamber machine contains the alloy melting pot as part of the machine itself. As the injection cylinder plunger rises, a port in the injection cylinder opens, allowing the molten metal to fill the chamber. The plunger then travels towards the cover die and a pressure ranging from 700psi to 5000psi is exerted to hold the casting in place. After the metal has solidified in the die cavity, the plunger retracts and the casting is ejected. 

Hot chamber die casting is a streamlined and cost-saving production means – ideal for manufacturing consumer, commercial and industrial products such as toys, gears, sink faucets and more. Contact our team to find out more about how you can leverage hot chamber die casting today!

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    Frequently Asked Questions About Hot Chamber Die Casting

    Hot chamber die casting process offers plenty of advantages. These include: 

    • Reduced porosity
    • Faster cycling production
    • Longer life of the machinery as it only handles metals with low melting points
    • More efficient process
    • Lesser metal wastage

    It all boils down to the material you are working with. Cold chamber die casting works well for metals with high melting points such as aluminum and copper. On the other hand, hot chamber die casting only works for metals with lower melting points such as magnesium, zinc, tin, and lead. 

    The process of producing parts with hot chamber die casting machines is relatively fast and uncomplicated due to easy automation. On average, there are 15 cycles per minute – and the molten will be formed into its final shape in as little as 15 to 20 minutes.