CERAMIC SHELL MOLDS MAKING METHOD FOR PRECISE CASTING OF METALS WITH USE OF INVESTMENT PATTERNS

摘要

FIELD: foundry, possibly evaluation of quality of binder for making ceramic shell molds. ^ SUBSTANCE: method comprises steps of using hydrolyzed ethylsilicate with mean weight values of molecular masses in range 900 - 1700 g/mol for preparing binder; determining molecular-mass dispersion of olygomers of etoxysiloxan in alcohol solution of hydrolyzed ethyl silicate at separation with use of exclusive chromatography; filling high-effective chromatographic columns with highly cross-linked polymer sorbent, namely with polydivinylbenzene. ^ EFFECT: possibility for making high-quality ceramic shell molds due to controlling olygomer composition of hydrolyzed ethyl silicate. ^ 2 cl, 2 tbl, 1 ex