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Casting Process Steps & Flow

In the realm of modern industry, casting technology plays a pivotal role in providing essential components for various sectors such as construction, automotive and machinery. The following outlines the typical product production flow at a casting company, showcasing the key process steps from mold creation to the shipment of the final products.

  • 01.


    Mold Making

    The production process begins with the creation of molds. Precise and high-quality molds are crucial to ensuring that the final products meet design specifications.

  • 02.


    Wax Injection

    A wax mold is injected into the mold to form the shell of the casting.
    The wax mold should replicate the detailed structure of the desired part.

  • 03.


    Wax Repair

    After wax injection, any necessary repairs are made to ensure the integrity of the wax mold, including filling any possible voids or defects.

  • 04.


    Wash Wax Patterns

    The wax mold is cleaned and treated to ensure that the surface is smooth and free of impurities.

  • 05.


    Tree Assembly

    Assembles multiple wax molds on a tree stand to form a set of molds that can be cast in a single pour.

  • 06.


    Shell Coating

    The wax molds are shell coated, usually with ceramic particles and a binder, to create a hard shell.

  • 07.



    The wax molds are placed in a hot environment where the wax melts and runs off, leaving the shell behind.

  • 08.


    Wax Treatment

    The dewaxed shell is treated to prepare it to receive molten metal.

  • 09.


    Shell Sintering

    The shell is placed in a high temperature oven to make it harder and more heat resistant in preparation for pouring.

  • 10.



    The molten metal is poured into the prepared shell to fill the cavities in the shell and form the final casting.

  • 11.


    Chemical Component Inspection

    The chemical composition of the casting is inspected to ensure that it meets the requirements.

  • 12.


    Shell Vibrations

    Using vibration equipment, the shell from the casting to separate for subsequent processing.

  • 13.


    Shell Cleaning

    Remove shell residue to obtain the original appearance of the casting.

  • 14.


    Sprue Cutting and Grinding

    Remove any attachments and sprues from the casting for a smooth appearance.

  • 15.


    Heat treatment

    Place the casting in a high temperature furnace for heat treatment to improve its hardness and wear resistance.

  • 16.



    Any necessary trimming of the casting to ensure that it meets specifications and dimensions.

  • 17.



    If necessary, reshape the casting after heat treatment to restore its original shape.

  • 18.


    Blank Casting Inspection

    The surface and dimensions of a casting are inspected to ensure its quality.

  • 19.



    Improvement of corrosion resistance of castings by chemical treatment of their surfaces.

  • 20.


    Machining / Polishing

    Machining or polishing to improve surface quality and accuracy.

  • 21.


    Surface Coating

    Surface coating of castings to provide additional protection or appearance.

  • 22.



    Assembling parts together to form a final product.

  • 23.


    Finished Product Inspection

    A thorough inspection of the final product to ensure that its quality and performance meets specifications.

  • 24.


    Packaging and Shipping

    Packaging the finished product and arranging transportation for delivery to the customer.

  • This comprehensive casting process flow illustrates the intricate and tightly controlled processes involved in transforming raw materials into high-quality, specification-compliant products. Each step significantly influences the final product's quality and performance, underscoring the need for meticulous execution and monitoring at every stage of the production journey.
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