Manufacture of cast ferrous metal dies

Details Manufacture of cast ferrous metal dies Manufacture of cast ferrous metal dies

1974-06-18

1976-05-04

Shore, Ronald J.

Metal founding

Process

Shaping a forming surface

164 37, 164 45, 164 72, 164122, B22C 900

Patent

active

039541320

ABSTRACT:
A method of manufacturing a cast ferrous metal die wherein an initial die of non-ferrous metal is cast in a mould against a basic metal pattern having a melting point substantially not less than that of the non-ferrous casting metal, the basic metal pattern being preheated and coated with refractory material and the non-ferrous casting metal is cast against the preheated and coated basic pattern in a supercooled condition to minimise thermal shock and heat transference between the casting metal and basic pattern, and forming a further corresponding pattern of refractory material in the initial die, and then using the pattern of refractory material in a mould for casting a cast ferrous metal die from said refractory pattern, the cast ferrous metal die so obtained being of corresponding accuracy to the basic metal pattern.

REFERENCES:
patent: 1043809 (1912-11-01), Dickinson
patent: 1483018 (1924-02-01), Shoemaker
patent: 2396195 (1946-03-01), Pattison
patent: 3565163 (1971-02-01), Owen et al.
patent: 3669180 (1972-06-01), Moore et al.

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