The article proposes a new approach to the method of assessing the surface defects of the raceway of instrument bearings after profile grinding. The surface defects of the bearing raceways were studied on an optical-electronic complex on the basis of calculating the parameters of the autocorrelation function obtained as a result of computer processing of the video image of the surface. The purpose of this study is improving the profile grinding technology of bearings through the construction of an optical-electronic information-measuring system for monitoring the defects of raceways.

The article proposes a new approach to the method for estimating the texture parameters of the surface of the rolling tracks of instrument bearings after profile grinding. The microgeometry of the surface of the bearing raceways was studied on an optical-electronic complex on the basis of calculating the parameters of the autocorrelation function obtained as a result of computer processing of the surface video image. The purpose of this study is improving the technology of profile grinding of bearing raceways through the construction of an optical-electronic information-measuring system for monitoring the parameters of the autocorrelation function.

This article presents the results of a study of martensitic steels. Studied steels: OZH9K14N6MZD, 12X18N10TL, 07X13G28ANFL. The object of the study was the optimization of properties for use in cryogenic technology. The purpose of the study is to increase the strength and service life of products for various purposes. The destruction of steel 12X18N10TL and 07X13G28ANFL was investigated. It has been established that 07X13G28ANFL steel is more preferable for cryogenic use and is recommended by the authors.

The reducing of machine time during surface hardening by smoothening is possible by increasing in the contact length between the hardening element and part surface. We study the case: the indenter-working surface is a fragment of a cylindrical surface, which the symmetry axis is parallel to the axis of symmetry of the part hardened surface. We suggest that such a process scheme is corresponds to a 2D contact problem in which a cylindrical stamp moves in an inertial coordinate system along an elastic half-plane (circle). We tasking the boundary conditions in the contact zone, using the complex potentials developed in the works of L.N. Galin.

The paper presents the results of studies on the availability and resistance to brittle fracture of perspective austenitic chromium-nickel-manganese cryogenic steels, depending on the concentration and ratio of the nitrogen and vanadium content. The optimum content of these elements in deformed steels determined, the results of the studies and recommendations on the doping system are confirmed by the results of full-scale tests of low-temperature equipment under internal pressure in liquid nitrogen.