Purpose: Determination of possible ways to increase the effectiveness of interaction
between civil society institutions and public administration subjects in Ukraine through the …

The paper presents a comparative analysis of the thread profile geometrical error during
milling of internal thread and external thread applying external and planetary thread milling …

This paper investigates the friction behavior and mechanism of diamond-like carbon (DLC)
film and 26CrMo alloy steel under different loads in water-based drilling fluid environment …

The purpose of this research was to analyze the change in residual stresses in the surface
layer of steel samples taking into account the technological heredity effect on the value and …

Drilling oil and gas wells is always accompanied by the process of screwing and unscrewing
the drill-pipe connector. Its effectiveness largely depends on the accuracy and quality of the …

The directions of the research on increasing the wear resistance of drill pipe locks, threaded
joints and casing drill string have been defined: application of drill pipes from the nose …

The paper presents a method for determining the total cross-sectional area of the cut off
layer for comb-shaped thread milling cutters with screw chip grooves based on process …

Определены направления проведения исследований по повышению износостойкости
замков бурильных труб, резьбовых соединений и обсадной бурильной колонны …

The paper focuses on a combined processing method developed to control the properties of
the surface layer of parts. A regular micro-relief was obtained on the surface, with oil pockets …

In the practice of agricultural machine building and repair of machines, technological
methods of surface hardening are widely used, which significantly increase wear resistance …