Abstract
The article presents the results of studying the process of electrolytic-plasma hardening of 0.34Cr-1Ni-Mo-Fe steel by surface hardening, as well as the results of the current-voltage characteristics of the cathodic electrolytic-plasma process depending on the composition of the electrolyte. Temperature-time and special modes of electrolytic-plasma hardening of steel 0.34Cr-1Ni-Mo-Fe were determined. The optimal composition of the electrolyte for electrolytic-plasma hardening has been determined, providing a relatively high heating rate and high hardness of the steel surface. It has been determined that after the electrolytic-plasma hardening, the microhardness of 34KhN1M steel increases 2.9 times due to the formation of fine martensite. In this case, the basis of the material does not change, it consists of a ferrite-pearlite structure.
Highlights
Development of new methods of influencing the surface to give it the necessary operational properties is one of the urgent tasks of modern science and technology
The article presents the results of studying the process of electrolytic-plasma hardening of 0.34Cr-1NiMo-Fe steel by surface hardening, as well as the results of the current-voltage characteristics of the cathodic electrolytic-plasma process depending on the composition of the electrolyte
The basis of the material does not change, it consists of a ferrite-pearlite structure
Summary
Development of new methods of influencing the surface to give it the necessary operational properties is one of the urgent tasks of modern science and technology. This can be achieved by using various methods of surface hardening. One of such methods is the electrolytic-plasma treatment of metals [1,2,3]. Electrolytic-plasma processing method is largely devoid of the disadvantages inherent in traditional methods of metal surface processing, and allows to save material resources. The packing density of gas bubbles in the near-electrode gas-liquid layer increases, and the total cross-sectional area of electrolyte bridges between them decreases. A complex of physicochemical processes takes place in the vapor-gas shell: film boiling in an electric field; heat transfer; vapor ionization; movement of electric charges [1,2,3,4,5]
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