Sand Casting is still the most prevalent form of casting. It is a conventional molding and metal casting process as the mold may be poured without further conditioning. The mold is formed around a pattern by ramming sand, mixed with the proper bonding agent, onto the metal or wood pattern. Then the pattern is removed, leaving a cavity in the shape of the casting to be made. Sand cores are placed if internal cavities or undercuts are required. Molten metal is poured into the mold, and after it has solidified the mold is broken and castings are removed for secondary process and final finishing.
Shell Mold Casting
  • Resin-coated sand is poured on to hot metal patterns, curing into shell like mold halves.
  • These mold halves are removed from pattern, assembled with or without cores.
  • Molten metal is poured into resultant cavities and after it has solidified the mold is broken and castings are removed for secondary process and final finishing.
Metals
 
  • Most metals can be cast successfully.
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    		Special characteristics of Sand casting
    • High production rates
    • Low pattern cost.
    • High integrity castings
    • Complex shapes can be cast
    • Long or short runs can be accommodated
    • Almost any alloy can be cast