3_sand_casting_background.20090812.4a8382013195d1.05354221

3_sand_casting_background.20090812.4a8382013195d1.05354221...

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ME350 – Sand Casting Background Information 1 Sand Casting 1.1 Background In this lab, you will cast an aluminum piece utilizing the sand casting method. A mold will be constructed of oiled sand packed tightly into a flask; the oil causes the sand to stick together and hold its shape (similar to using damp sand to construct a sand castle). Molten metal will then flow by gravity into the mold cavity and solidify in the shape of the cavity. The natural porosity of the sand permits air and gases to escape through the walls of the cavity. 1.2 Overview of Procedure The part you created in the rapid prototyping lab will be used as the pattern for the sand casting. You will glue the pattern to a board and pack sand tightly around the pattern. You will then cut into the cope a downsprue to control the velocity and turbulence of the metal flow, a pouring cup to reduce splashing and turbulence when pouring the aluminum, and a runner to connect the downsprue with the mold cavity. You will then pack the drag with sand, place the
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This note was uploaded on 01/15/2010 for the course ME 350 taught by Professor Staff during the Spring '08 term at University of Illinois, Urbana Champaign.

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