Potential Difference of Metal Machine Parts Methodology for Determining the Parameters of Adhesional Properties of Materials on the SMC-2 Friction Machine

Abstract

The paper develops the idea of the capabilities of a standard machine for testing materials for friction and wear SMC-2 to determine the parameters of the adhesive properties of materials. The results of experimental studies of tribological systems of materials "40Х-steel 45", "12Х2Н4-steel 45", "45ХН2МФА-steel 45" are presented. The regularities of the change in the tangential strength of the molecular bond with increasing pressure in the contact, and the coefficients of its hardening during the interaction of the materials under consideration without lubrication are determined. It is shown that in order to reproduce the contact interaction of the operational surfaces of real friction units, it is possible to simulate their shear during deformation provided that full-size fragments placed in regular places of the SMC machine are used. In this case, the equipment of the SMC machine requires minor refinement, which allows us to simulate the shear rate of surfaces as well.

Ynamic Viscosity of the Lubricant and Its Effect on Steel Materials With Boron

“…The aim of the work is to establish the regularities of changes in the parameters of the adhesive bond in the systems of materials "steel 45 -45KhN2MFA", "steel 45 + B -45KhH2MFA", "steel 45 + VS -45KhH2MFA", "steel 45 -12Kh2H4", "steel 45 + B -12Kh2Н4 "," steel 45 + ВС -12Kh2Н4 "in the physical modeling of the shift between small-sized samples in the environment of lubricants with distinctive dynamic viscosities using additional equipment of the SMTs-2 friction machine. Based on the above, this work seems to be a continuation of the complex of studies begun in [3,4,7].…”

“…The parameters of the adhesive bond were evaluated using an SMTs-2 friction machine with additional equipment in accordance with the procedure described in [7]. In this case, movable samples -disks were made of steels 12Kh2N4, 45KhN2MFA, and fixed pads in the form of triangular-shaped segments of steel 45 with surface modification with boron and boron carbide, i.e.…”

TRIBOLOGICAL CONTACTIN MATERIALS SYSTEMS"CuCrNiZrTi-M500", "CuCrNiZrTi-5140H", "CuCrNiZrTi-3310H"

“…Taking into account the fact that the weight loss of the block samples was determined at the end of the second stage, the energy intensity of wear was presented as a generalized average. The parameters of the adhesive bond were evaluated on a friction machine SMTs-2 with additional equipment in accordance with the procedure described in [1]. To estimate the pressure in the contact zone and the tangential shear strength, we used the average values of the contour areas, which were determined from the indentations.…”

“…This work is a continuation of work [1], which shows the importance of having numerical values of the parameters of adhesion properties directly for the surfaces of metals of full-scale operational friction units of machines and mechanisms with reversible movement, ie. in which there is a shear with a certain speed of movement, when the manifestation of the molecular (adhesive) component of the friction force has time to manifest itself.…”