International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Features of modeling multilayer metal cord structures are shown. Data on the parameters of the numerical model of metal cord twisting and stretching are given. The dependences of the magnitude of stresses during the destruction of metal cord on the diameter of wires for various metal cord structures are determined. It is shown that symmetrical steel cord structures are less susceptible to a decrease in aggregate strength. The difference between the breaking forces of a multilayer symmetric metal cord with a core is about 10%. It is shown that with an increase in the wire diameter, there is no significant increase in the fracture stresses.

A method has been developed for performing electrolyte-plasma treatment (EPT) of internal surfaces. The method is based on the use of an electrode device that moves along the inner surface of the tubular workpiece and provides the necessary electrical and hydrodynamic conditions. The design of the electrode device combines a counter-electrode and a nozzle for supplying polarized electrolyte to the treated surface. The study presents the results of investigations into the electrical and hydrodynamic conditions during EPT of internal surfaces, as well as the influence of hydrodynamic characteristics on current parameters, metal removal rate, and the quality of the resulting surface.