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Proceedings Paper

Electroforming of optical tooling in high-strength Ni-Co alloy
Author(s): Berl Stein
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Paper Abstract

Plastic optics are often mass produced by injection, compression or injection-compression molding. Optical quality molds can be directly machined in appropriate materials (tool steels, electroless nickel, aluminum, etc.), but much greater cost efficiency can be achieved with electroformed mold inserts. Traditionally, electroforming of optical quality mold inserts has been carried out in nickel, a material much softer than tool steels which, when hardened to 45-50 HRc usually exhibit high wear resistance and long service life (hundreds of thousands of impressions per mold). Because of their low hardness (<20 FIRc), nickel molds can produce only tens of thousands of parts before they are scrapped due to wear or accidental damage. This drawback prevented their wider usage in general plastic and optical mold making.

Paper Details

Date Published: 19 May 2003
PDF: 2 pages
Proc. SPIE 10314, Optifab 2003: Technical Digest, 103140L (19 May 2003); doi: 10.1117/12.2284010
Show Author Affiliations
Berl Stein, NiCoForm, Inc. (United States)

Published in SPIE Proceedings Vol. 10314:
Optifab 2003: Technical Digest
Walter C. Czajkowski; Toshihide Dohi; Hans Lauth; Harvey M. Pollicove, Editor(s)

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