Method of and device for producing mold core

Details Method of and device for producing mold core Method of and device for producing mold core

1987-06-25

1988-11-01

Godici, Nicholas P.

Metal founding

Process

Shaping a forming surface

164 37, 164186, 164187, 164195, B22C 1528

Patent

active

047812362

ABSTRACT:
A method of producing a mold core from green sand, wherein green sand is blown into a mold cavity which is sized to be greater than the size of the mold core to be obtained, so that a preformed mold body is prepared. The preformed mold body is then compacted by a compacting die having a cavity recess which is sized in conformity with the size of the mold core to be obtained, until the preformed mold body size is reduced to the final stage. In consequence, the green sand is compacted to develop uniform distributions of strength and hardness over the entire portion of the mold core as the product.

REFERENCES:
patent: 4158381 (1979-06-01), Michelson

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