Investment Casting Process: A Detailed Step-by-Step Guide

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Investment casting process involves creating a wax pattern, assembling the pattern onto a sprue, coating with ceramic layers, de-waxing and firing, casting molten metal, knockout, finishing, testing, inspection, packing, and shipping. This detailed guide provides insights into each step of the investment casting process for creating high-quality metal castings.

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Uploaded on Aug 11, 2024 | 0 Views

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Investment Casting Process investment casting processes names

Step 1: Tooling and Pattern Making A tool is built to customer-provided specifications (A). Cold wax is then injected into the tool to create a wax pattern/prototype (B). That will hold precise dimensional requirements in final casting.

Step 2: Pattern Assembly The wax patterns are assembled onto the sprue.

Step 3: Dipping and Coating Successive layers of ceramic (A) and are applied to the sprue assembly to form a hard shell.

Step 4: De-Waxing and Firing The molds are flash-fired to remove the wax and sprue materials and then heated to 1,800 and placed on a send bed, ready for pouring.

Step 5 Casting Molten metal, up to 3,000 , is poured into the hollow mold and then cooled.

Step 6: Knockout The ceramic shell is broken off, and the individual castings are cut away.

Step 7: Finishing Excess metal is removed, surfaces are finished, and castings are heat treated.

Step 8: Testing and Inspection Casting undergo thorough testing and inspection to ensure that they meet dimensional tolerances and specifications.