PPT-METAL CASTING

OVERVIEW OF CASTING 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. 0224 ME 455655 Casting Session Overview Basic principles of metal casting processes Different type of metal casting process Sand Casting Investment Casting Die casting Process Equipment Materials Design guides Die Casting Alexander DeCarli. Kevin Shaw. Katie Gaffney. SRJC . Engr. 45. 12/08/10. Early History. The oldest known cast in existence is a copper frog from 3200 BCE in Mesopotamia.. Other early casts from around 3000BCE like weapons and cult objects were discovered in the Middle East and India.. Workshop Technology. Mansoor Ghazi, Department of Mechanical Engineering. College of E&ME, NUST Pakistan. Contents. Definition of Casting. Types of Casting. Sand Casting & Associated Terminologies. vs. Fabrication.  .  . $100,000 cumulative saving after 5 years. Tooling payback by savings 1 year production. Sand. Green Sand . Petrobond. (oil sand). Dry . Sand (chemically bonded, no-bake). Shell Molded ( Resin sand . Casting Frontier has secured its place in the entertainment industry as the number one innovator of digital casting tools. Previously, casting directors used paper size cards, Polaroids, and couriers to ship audition tapes across the city or country. DR PROMILA VERMA . DEFINITIONS. Dental wax. . A low molecular weight ester of fatty acids . derived from natural & synthetic components . such as petroleum derivatives that soften to . Pattern Allowances. PATTERN. In casting, a pattern is a replica of the object to be cast, used to prepare the cavity into which molten material will be poured during the casting process. PATTERN. Its size and shape is same with required casting.. DR PROMILA VERMA . DEFINITIONS. Dental wax. . A low molecular weight ester of fatty acids . derived from natural & synthetic components . such as petroleum derivatives that soften to . Alexander DeCarli. Kevin Shaw. Katie Gaffney. SRJC . Engr. 45. 12/08/10. Early History. The oldest known cast in existence is a copper frog from 3200 BCE in Mesopotamia.. Other early casts from around 3000BCE like weapons and cult objects were discovered in the Middle East and India.. By S K . Mondal. Shell Moulding. The sand is mixed with a thermosetting resin is allowed to come in contact with a heated metal pattern (200. 0. C).. A skin (shell) of about 3.5 mm of sand and plastic mixture adhere to the pattern..  . In . VERTICAL centrifugal casting PROCESS. a . permanent mold is rotated about its . VERTICAL axis . THE MOLD IS SPUN AT HIGH . speeds . ( USUALLY 50 TO 100 TIMES GRAVITY FORCE). . as the molten metal is . Identify and select proper manufacturing process for a specific component.. CO. METAL CASTING. History of Casting . Why Casting?. Basic casting process. Basic terms used in casting. Steps in 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. Requirements of casting alloys:. 1. . They must not tarnish or corrode in the mouth. ;. . 2. They must be sufficiently strong for intended purpose. .. . 3. They must be compatible ( nontoxic ,not allergic.