A method for removing alumina rods from the inner cavity castings of heat-resistant nickel-based alloys

摘要

1.method u0443u0434u0430u043bu0435u043du0438u00a0 u043au043eu0440u0443u043du0434u043eu0432u044bu0445 rods of internal cavities castings of refractory alloys based on u043du0438u043au0435u043bu00a0, u0437u0430u043au043bu044eu0447u0430u044eu0449u0438u0439u0441u00a0 inside castings in the autoclave, u0437u0430u043bu0438u0432u043a (e u0430u0432u0442u043eu043au043bu0430u0432u0430 u0433u0438u0434u0440u043eu043eu043au0441u0438u0434u0430 u043du0430u0442u0440u0438u00a0 solution, heating the solution in the autoclave and the processing of them are complete u0443u0434u0430u043bu0435u043du0438u00a0 rods, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 orderthe pour solution in the autoclave further u0432u0432u043eu0434u00a0u0442 u043du0430u0442u0440u0438u00a0 hydroxide to at least 80 g to 170 g. the rods, with the autoclave in saturated solution om u043du0430u0442u0440u0438u00a0 hydroxide education is free in solution, heating to the temperature of u043fu0440u043eu0438u0437u0432u043eu0434u00a0u0442 home, and in the processing of castings in the u043eu0442u043bu0438u0432u043a and periodically placed in the free volume of the u0430u0432u0442u043eu043au043bu0430u0432u0430.;2. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1, so that the castings are free of u0430u0432u0442u043eu043au043bu0430u0432u0430 by u0432u0440u0430u0449u0435u043du0438u00a0 u0430u0432u0442u043eu043au043bu0430u0432u0430 around its axis of symmetry.;3. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1 or 2, so that after the u0443u0434u0430u043bu0435u043du0438u00a0 cores from castings and u0441u043du0438u0436u0435u043du0438u00a0 solution in the autoclave temperature below 100 autoclave immersed in the water, under water to reveal it, remove the castings and purify them from reaction products mechanically.