METHOD OF REMOVING DIFFUSION BORIDE LAYER OFF SURFACE OF STEEL ARTICLES

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to metallurgy, in particular to the chemical heat treatment of steel products, namely, to processes u0438u0441u043fu0440u0430u0432u043bu0435u043du0438u00a0 marriage in the chemical heat of u0431u0440u0430u0431u043eu0442u043au0435, and can be used in engineering u0434u043bu00a0 u0443u0434u0430u043bu0435u043du0438u00a0 diffusion u0431u043eu0440u0438u0434u043du043eu0433u043e u0441u043bu043eu00a0 steel products with complex shapes. the goal is to reduce the labour intensity and improve the quality of u0443u0434u0430u043bu0435u043du0438u00a0 u0441u043bu043eu00a0 surface of steel products with complex shapes.electrochemical etching method includes products in the water solution u044du043bu0435u043au0442u0440u043eu043bu0438u0442u0430 containing u0445u043bu043eu0440u0438u0441u0442u043eu0435 iron at concentrations of 300 to 400 g / l at room tempera round and the current density of 40 to 60 a / u0434u043c2. a way to reduce the number of operations on u043fu043eu0437u0432u043eu043bu00a0u0435u0442 88.5% and to ensure the quality of u0441u043bu043eu00a0 borides. 2, table 2).