METHOD OF CASTING LARGE-SIZE THIN-WALLED SPECIAL-PURPOSE CASTINGS USING INVESTMENT-CASTING PROCESS

摘要

use: the invention u043eu0442u043du043eu0441u0438u043bu0441u00a0 to u043bu0438u0442u0435u0439u043du043eu043cu0443 production, in particular, to the manufacture of large-size thin-walled castings, special u043du0430u0437u043du0430u0447u0435u043du0438u00a0 on you u043fu043bu0430u0432u043bu00a0u0435u043cu044bu043c u043cu043eu0434u0435u043bu00a0u043c.the essence of the u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0: before placing in u043eu043fu043eu043au0435 membranes forms, constructed on the basis of crystal quartz flasks would cool down, the bottom and the side walls u0444u0443u0442u0435u0440u0443u044eu0442 u0442u0435u043fu043bu043eu0438u0437 u043eu043bu00a0u0446u0438u043eu043du043du044bu043c u043eu0433u043du0435u0443u043fu043eu0440u043du044bu043c filler, and after the installation of the u043eu043fu043eu043au0443 clearance between the u043bu0438u0442u043du0438u043au043eu0432u044bu043cu0438 crystal forms and u043eu043fu043eu043au043eu0439 u0433u0435u0440u043cu0435u0442u0438u0437u0438u0440u0443u044eu0442 top plate, made of it the same fireproofing u043du0430u043fu043eu043bu043du0438u0442u0435u043bu00a0, u043eu0442u0432u0435u0440u0441u0442u0438u00a0u043cu0438 under u043bu0438u0442u043du0438u043au043eu0432u044bu0435 cupthe thickness u043du0430u043fu043eu043bu043du0438u0442u0435u043bu00a0 u0432u044bu0447u0438u0441u043bu00a0u044eu0442 formula in dependence on u0442u0435u043cu043fu0435u0440u0430u0442u0443u0440u043eu043fu0440u043eu0432u043eu0434u043du043eu0441u0442u0438 material u043du0430u043fu043eu043bu043du0438u0442u0435u043bu00a0, u043fu043eu043au0430u0437u0430u0442u0435u043bu00a0 degree u043fu0430u0440u0430u0431u043eu043bu044b u0440u0430u0441u043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 those u043cu043fu0435u0440u0430u0442u0443u0440u043du043eu0433u043e u043fu043eu043bu00a0 in layer u043du0430u043fu043eu043bu043du0438u0442u0435u043bu00a0 and the time from the unloading u043eu043fu043eu043a to forms from the oven u043fu0440u043eu043au0430u043bu0438u0432u0430u043du0438u00a0.u0434u043e pouring.