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Manufacturing Processes Third Class
Metal Casting is one of the oldest materials shaping methods known. Casting means pouring molten metal into a mold with a cavity of the shape to be made, and allowing it to solidify.
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[DOC File]CASTING
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The molds are either metal or graphite and, consequently, most permanent-mold castings are restricted to lower melting point nonferrous metals and alloys. 6.6. DIE CASTING. Die casting differs from ordinary permanent-mold casting in that the molten metal is forced into the molds by pressure and held under pressure during solidification.
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[DOCX File]Ultra Bird - Home
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In sand casting, for example, the natural porosity of the sand mold permits the air and gases to escape through the walls of the cavity. In permanent metal molds, small vent holes are drilled into the mold or machined into the parting line to permit removal of air and gases.
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[DOC File]Overview of Mold and Cast Materials
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Metal casts can be made directly from certain heat resistant silicone, metal, or sand molds. They can also be made with the ancient art of "lost wax" or investment casting, in which a wax cast is used as a template for a ceramic mold, and the wax melted away during the pouring of the molten metal.
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[DOC File]Common Mold and Cast Making Compounds
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One can use a silicone mold to produce anything from ice sculptures to low-melting metal casts. It tears somewhat more easily than latex, but can be reinforced with gauze or burlap, and in general is the preferable material for long-lasting molds of important specimens.
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[DOC File]Chapter 7 Metal Casting
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Metal Casting: Solidification of molten metal poured into a mold or injected into a die. 4 Most Popular Casting Processes: Sand casting, Investment casting, Permanent mold casting, Die casting. SAND CASTING (Expendable Mold classification) – mold is produced around a pattern that is withdrawn to leave a cavity. Sand allows gasses & stem to ...
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Molds for casting metal