![]() When wax is used as a pattern material, the process also is referred to as lost wax investment casting process. ![]() (See Figure 1 for a schematic of the investment casting process.). The term investment casting is derived from the characteristic use of a mobile slurry, or investment, to form a mold with an extremely smooth surface and high dimensional tolerance. Investment casting involves using an expendable pattern made from a variety of materials, such as wax, frozen mercury, or plastic, among others. Second column: %frozenįigure 9: Injected parts using the first injection point (a), the second injection point (b and d), and the third injection point (c)įigure 10: Results for the second injection point with midplane and 3D meshesįigure 11: Results for the third injection point with fusion meshįigure 12: Interrupted filling experiment to determine the last section to be filled and comparison with MoldFlow results (a) midplane (b) fusion (c) 3Dįigure 8: Filling time and solidified material for the first injection point, with the three types of mesh. ![]() ![]() Schematic shows manufacturing of an investment casting.įigure 2: Potential porosity locations in original design.įigure 3 : Solidification plot for original design.įigure 4: Solidification plot for modified design.įigure 5: Potential porosity locations in modified design.įigure 6: CAD drawing of the stepped cylinder pattern.įigure 7: Three kind of meshes. ![]()
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