Method for making sand molds

Details Method for making sand molds Method for making sand molds

1984-09-04

1986-07-08

Godici, Nicholas P.

Metal founding

Process

Shaping a forming surface

164207, B22D 1500

Patent

active

045987564

ABSTRACT:
In a method of preparing a sand mold in which mold sand within a mold frame is squeezed from an upper side opposite to a lower side of the frame at which a pattern is embedded and also from said lower side, the squeezing from the lower side is made only after the squeezing from the upper side has been completed by about or more than 95% of a total squeezing stroke. The sand mold thus prepared comes to have a desired hardness particularly at casting surfaces thereof.

REFERENCES:
patent: 3807483 (1974-04-01), Buhler

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