METHOD FOR MANUFACTURE OF CLOSED SHELLS OF COMPLICATED CONFIGURATION FROM LATEX FOR INVESTMENT CASTING

摘要

FIELD: working of plastic materials. SUBSTANCE: mold of the product to be cast is made not from hard material (steel, glass) but of paraffin. As the whole process of manufacture and curing of latex shells by dipping is carried out at the room temperature paraffin well holds the preset shape. Paraffin is withdrawn from the shell during the last stage of manufacture by melting paraffin inside the shell and its pouring in liquid stage through auxiliary hole. EFFECT: higher accuracy.