How Does Investment Casting Work?

The investment casting process involves creating a wax or 3-D printed Stereolithography pattern that’s an exact replica of the precision cast part that is being produced. Our advanced software, hardware, and materials for 3D-printed investment casting patterns enable the creation of complex casting patterns in a fraction of the time it takes to create molds using traditional tooling. By using our additive manufacturing process, you can create hollow patterns that allow for greater design complexity, reduced component weight, and lower assembly costs. The patterns are cluster-dipped into a ceramic slurry to start the mold-making process. At Barron Industries, we use a six-axis dipping robot to ensure the ceramic shell is consistent and uniform. 

The completed ceramic molds are then placed in a flash fire oven which removes the pattern materials and treats the shell. This step also helps to increase the overall strength and stability of the casted component. 

Before filling the mold with metal, it’s preheated to a specific temperature to strengthen the ceramic and enable the filling of thin sections. Once the mold reaches the desired temperature, molten metal is poured into it. After the metal is hardened, the ceramic molds are removed using a vibratory or waterjet blast method, and the final precision cast parts are revealed.

Post-treatment methods may be required depending on the type of component that’s being produced. Post-treatments may include polishing, hand grinding, or machining.

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