Negative Filmを用いた光造形法による鋳造用模型

概要

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In order to obtain patterns for foundry, liquid photopolymer is cured by the exposure of ultraviolet rays through negative film. Single-and multiayer photopolymer patterns for foundry are investigated. The curing behavior of photopolymer is investigated through the relation between the exposure of UV rays and the curing of photopolymer at various spots. Positive and negative patterns in four layers are manufactured by the exposure of UV rays through four sheets of negative film. Applied examples of this process for civil castings in Kawaguchi are shown. The advantages and disadvantages of the process are discussed. Improvement of the exposure unit of UV rays and new photopolymers which have low viscosity, high sensitivity for UV rays and little shrinhage after curing are expected for further devolopment of the process.
1992-02-25