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Valery Marinov, Manufacturing Technology
Definitions Casting is a process in which molten metal flows into a mold where it solidifies in the shape of the mold cavity. The part produced is also called casting. Complex shapes Net-shape ability Very large parts Variety of metals Mass production. Poor accuracy Poor surface Disadvantages Internal defects Mechanical properties Environmental impact Casting technology involves the next steps: Mold preparation. Casting nomenclature The figure in the right shows the nomenclature of mold and castings in sand casting. The pouring cup, downsprue, runners, etc. Heat to raise the temperature to the melting point Heat of fusion Heat to raise the molten metal temperature to the temperature of pouring.
The part produced is also called casting. It defnes to the great extend the quality of casting. The riser must remain molten until after the casting solidifes. The Chvorinovs Rule is used to cal- culate the risers dimensions. One major requirement is that patterns and therefore the mold cavity must be oversized i to account for shrinkage in cooling and solidifcation, and ii to provide enough metal for the subsequence machining operation s. Types of patterns used in sand casting: a solid pattern, b split pattern, c match-plate pattern, and d cope-and-drag pattern Solid pattern for a pinion gear Split pattern showing the two sections together and separated.
Metal Casting 2 Valery Marinov, Manufacturing Technology readers should refer to more specialized books for a detailed coverage of this problem. BulgarianAmerican Stephane Valery marinov manufacturing technology wrote the celebrated book. HJ Technologh Jaw Crusher. Recommended articles Citing articles valery marinov manufacturing technology. Download full text in PDF Download. Metal Casting 2 Valery Marinov, Manufacturing Valery marinov manufacturing technology readers should refer to more specialized books for a detailed coverage of this problem. Valery Marinov, Manufacturing Technology.