friction

Structure and wear resistance of aluminium alloys coated with surface layer laser-modified by silicon carbide

Modern approaches to ensuring the necessary characteristics of surface of a material with the aim to improve economic and technological characteristics of the structures are considered in this paper. It is shown that aluminium alloys gain wide application in industry. Nevertheless, surface characteristics of materials are insufficiently good for their use in structures which operate under abrasive wearing and boundary friction.

Modified kinematics analysis supporting rotary cranes

Analysis of kinematics of sliding of butt-end surfaces of rollers’ touch with the racecourses of adjacent rollers has been conducted and its structure and principle of work are laid out. Presented analytical expressions of the sought kinematic parameters allow us to estimate the friction diminishing between the elements of support-rotating device by the realization of modification of butt ends of working rollers.