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Shell mold (shell mold casting), with a shell mold castings production methods. Shell mold casting is a German J. Cronin invented in 1943, in 1944 the first application in Germany in 1947 after other countries began to adopt.

Covered heated to 180 to 28 in a case of thermosetting sand (phenolic resin-coated sand)

Shell mold casting

Shell mold casting

0 ? of the metal template to harden the shell (shell thickness is generally 6 to 12 mm), plus temperature curing shell, so that sufficient strength and stiffness, so the bottom two shell jig card after tightening or resin cement, sand box can not constitute a mold, pouring the casting metal template heating temperature is generally about 300 ?, sand resin sand used is that phenolic resin as a binder resin sand. The same can also be made of the above methods core shell core shell mold manufacturing method commonly dump. Manufacture shell core common blowing method.