Method of making a mold

Details Method of making a mold Method of making a mold

1995-06-19

1996-05-14

Lavinder, Jack W.

Metal founding

Process

Shaping a forming surface

164 6, 164124, 164127, B22C 706

Patent

active

055159036

ABSTRACT:
A method is disclosed for making molds for use in injection molding wherein a cement replica is made of a pattern by curing the cement in a silicon rubber negative of the pattern, then pouring molten zinc or zinc alloy into a frame containing the cement replica. The cooling of the mold metal is controlled by the direct application of flame and frequent adjustments of clamps which firmly contact the mold to a solid surface.

REFERENCES:
patent: 898728 (1908-09-01), Cox
patent: 2821760 (1958-02-01), Kurzinski
patent: 3065511 (1962-11-01), Leitzel
patent: 3982934 (1976-09-01), Wentzell
patent: 4611371 (1986-09-01), Fujino et al.
patent: 4682643 (1987-07-01), Bernhardt et al.
patent: 4710334 (1987-12-01), Rosetti

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