OBTAINING OF WEAR-RESISTANT COATINGS ON DETAILS OF VEHICLES UNDER NON-STATIO-NARY TEMPERATURE CONDITIONSJournal: Collection of scholarly papers of Dniprovsk State Technical University (Technical Sciences) (Vol.1, No. 30)
Publication Date: 2017-08-29
Authors : O. O. Beygul S. I. Adamchuk D. B. Sereda A. S. Shulga;
Page : 73-76
Keywords : wear resistance; synthesis; steel; micro hardness; phase;
In this work, we consider the production of protective coatings on the details of the crank mechanism. Steel 50 was used for the research. The coating was formed for 15-60 minutes at a temperature of 900-10500С. The optimum compositions of SHS-charge containing 10% B, 7% Si, 20% Ti were obtained. It is established that with increa-sing hardness wear resistance increases. On the surface, a micro hardness of 15000-17500 MPa was obtained. Due to alloying of chromium-coating coatings with boron, silicon and titanium, obtaining an increase in wear resistance by 1.8-2.1 times than for coatings obtained under isothermal conditions and the term of chemical-thermal treatment decreased by 2.5-4 times. This allows you to reduce energy costs during the process of chemical-thermal treatment.
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