METHOD OF PRODUCING LARGE-SIZE THIN-WALLED CASTINGS BY INVESTMENT PATTERNS

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 ways u043fu043eu043bu0443u0447u0435u043du0438u00a0 large thin-walled castings for u0432u044bu043fu043bu0430u0432u043bu00a0u0435u043cu044bu043c u043cu043eu0434u0435u043bu00a0u043c. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 - to improve the geometric accuracy of castings. this u0434u043eu0441u0442u0438u0433u0430u0435u0442u0441u00a0, constructed model with the subsidiary u0444u043eu0440u043cu043eu0441u043eu0445u0440u0430u043du00a0u044eu0449u0438u043cu0438 elements of u0432u043eu0434u043eu0440u0430u0441u0442u0432u043eu0440u0438u043cu043eu0439 salts accumulate in the blocks and u0440u0430u0441u0442u0432u043eu0440u00a0u044eu0442 support in water further supportive u0444u043eu0440u043cu043eu0441u043eu0445u0440u0430u043du00a0u044eu0449u0438u0435 elements.u043eu0431u043eu043bu043eu0447u043au043eu0432u0443u044e form are u043fu043eu0441u043bu043eu0439u043du044bu043c and u043fu043eu043au0440u044bu0442u0438u00a0 after drying which form u0432u044bu043fu043bu0430u0432u043bu00a0u044eu0442 model composition. after u043fu0440u043eu043au0430u043bu0438u0432u0430u043du0438u00a0 form in the metal. the transition from u043fu0438u0442u0430u0442u0435u043bu00a0 to making is carried out by the radius u0433u0430u043bu0442u0435u043bu044cu044e and manifold without radius, which results in the cooling of castings and the emergence of u043cu0438u043au0440u043eu043du0430u0434u0440u044bu0432u043eu0432 in been asking just place a supply and the reservoir.after the heat treatment u043eu0442u0434u0435u043bu00a0u044eu0442 castings foundries blocks from them. 2 z. s - lu u0438u043b., 9, 1, table 2).