METHOD OF THERMOCHEMICAL TREATMENT OF TITANIUM AND TITANIUM ALLOY PRODUCTS

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to chemical heat treatment of titanium and its alloys and can be used in engineering u0434u043bu00a0 machining working in pract e, especially parts of precision mechanics, which is the minimum value of u0434u043bu00a0 coefficient u0442u0440u0435u043du0438u00a0 u043fu043eu043au043eu00a0.the way includes the oxidation of titanium and its alloys in air with the 650 - 850 & deg; c during 1 to 12 h, the treatment solution containing, g / l: pungent u043du0430u0442u0440 500 - 700. u0430u0437u043eu0442u043du043eu043au0438u0441u043bu044bu0439 sodium 150 - 250; u0436u0435u043bu0442u0430u00a0 u043au0440u043eu0432u00a0u043du0430u00a0 salt 3 to 8, with 135 to 143 & deg; c and subsequent passage in u0440u0430u0441u043fu043bu0430u0432u0435 carbonates of alkaline metals in the 550 - 650 & deg; c for 3 to 4 h following u0434u0443u044eu0449u0435u043c content components, mas.u043bu0438u0442u0438u00a0 33 - 37%: carbonate; carbonate u043au0430u043bu0438u00a0 43 - 47; carbonate u043du0430u0442u0440u0438u00a0 the rest. this method u043fu043eu0437u0432u043eu043bu00a0u0435u0442 increase the durability of parts. 1, table 2).