Method of producing cast-to-size tools

Details Method of producing cast-to-size tools Method of producing cast-to-size tools

1992-02-19

1993-06-29

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

2940205, 2940221, 29425, 295263, 295275, 29DIG5, 761071, 76DIG3, 164168, 164DIG15, C21D 800, B23P 1700, B22D 2500

Patent

active

052230511

ABSTRACT:
A process for producing multipiece complementary tooling castings is disclosed in which hollow internal surfaces are cast in a mold having a soft, low strength sand core piece to define such hollow portions and external surfaces are cast against hard, resin-bonded sand mold surfaces. The castings are removed from their respective molds while still warm and nested and pressed together to bring their working surfaces into conformance with each other. The result of this practice is a set of tool pieces that require little machining and display high accuracy in their as-cast condition.

REFERENCES:
patent: 1929909 (1933-10-01), Wheeler et al.
patent: 2656593 (1953-10-01), Heintz

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