The innovative method of increasing durability of machine parts by chemical-thermal treatment
DOI:
https://doi.org/10.15587/2312-8372.2014.21580Keywords:
boriding, steel, diffusion layers, microhardness, layer depthAbstract
The purpose of the paper was to study the influence of technological parameters of boriding in nanopowder on the properties of different classes of steels. Finding the optimum treatment temperature and time was the method to solve this problem, and studying the boriding time influence on the hardened layer depth and hardness was used to estimate the parameters, characteristic of diffusion layers. Different classes of steels were research materials. A mixture with the content of nanodispersed boron-containing substances was used in boriding of pastes. Based on the studies, to simplify the technological process it is proposed to combine boriding with hardening for all except high-speed steels. For them, it is advisable to conduct boriding at 1000C. Boriding duration is selected according to the requirements for parts. New boriding method, allowing to carry out treatment with obtaining sufficient diffusion layers was proposed. The practical significance of this paper lies in the fact that the application of the developed easy-to-use and effective nanotechnology of parts boriding from steels reduces chemical-thermal treatment duration by 2-3 times with obtaining high-quality boride layers, which significantly increase wear resistance of machine partsReferences
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