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. |