Method of making metal molds and dies

Details Method of making metal molds and dies Method of making metal molds and dies

1987-10-13

1989-04-04

Lacey, David L.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156658, 1566591, 427277, 264132, 264293, C23F 102, B29C 4708

Patent

active

048183369

ABSTRACT:
A method of forming a metal mold or die from a model of the mold contours. A workpiece for the mold is coated with a material which is resistant to an acidic etchant and which has a melting temperature sufficiently elevated such that the coating is generally solid. The coated workpiece is then immersed in an etchant, and a heated template is pressed against the coated workpiece, melting any portions of the coating contacted by the template. The melted portions of the coating are displaced until the template contacts the surface of the workpiece. The template is then withdrawn to permit solidification of the coating, the etchant etches any portions of the workpiece exposed by displacement of the coating, and the process is repeated until the surface of the workpiece conforms to any contouring of the surface of the template.

REFERENCES:
patent: 3290192 (1966-12-01), Kelley
patent: 3891437 (1975-06-01), Sarka
patent: 4028455 (1977-06-01), Ueda et al.
patent: 4035226 (1977-07-01), Farber et al.
patent: 4210695 (1980-07-01), Hirono et al.
patent: 4325779 (1982-04-01), Rossetti
patent: 4579022 (1986-04-01), Kasai et al.
patent: 4594120 (1986-06-01), Bourland, Jr. et al.

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