the authors present a method for calculating the energy balance of the process of obtaining graphite powder by electrolysis. Energy balance data are important for assessing the energy efficiency of an electrochemical device and identifying reserves for reducing the specific energy consumption. The regularities of energy distribution inside the electrolyzer system are determine

The design of nesting pattern and its layer-by-layer assembly for the production of large-dimensioned metal products is viewed. The analysis of the use of molding compounds and technologies for creating large size building constructions in additive manufacturing is given. The choice of au-tomatically-controlled drives for transfer mechanisms in the technological complex of layer-by-layer synthesis in building con-structions is studied

The article analyzes the requirements for various functional coatings. The integration of ultrasonic technologies into the processes for obtaining functional coatings in order to improve their quality has been viewed.

For determination of the surface roughness function after face milling a complete factorial experiment has been fea-tured. An adequate mathematical model of roughness and significant variables are calculated. Hypersurfaces and function level lines are projected, optimal and maximum cutting modes are found in a graphical-analytic way.

The modular hardware platform architecture for the development of industrial IoT devices is presented as an example of information harvesting and its analysis. Variants of modules implementing typical functions of such devices are given: data acquisition from a distributed array of sensors; preprocessing, aggregation and data transmission; data mining; storage of primary data and analysis results.

Studies have been carried out when grinding alloys based on titanium, vanadium, chromium, iron, cobalt and nickel. According to the condition of the neat surface, the alloys are divided into groups. The regularities of changes in the roughness parameters of Ra and Rsm are investigated. The parameter of the average density of the peaks of the grains forming the elements of the surface roughness profile has been introduced, the relationship of the introduced parameter with Ra is shown. It is established that when grinding all alloys, the treated surface is impregnated by the wear products of the abrasive tool. Electronic photographs of objects are given. The possible sizes of embedded crystals are determined.

On the basis of metallographic analysis and test results of samples of welded junctions of aluminum alloys AMg6 and D16T, made by friction stir welding, for static stretching, it is shown that destruction occurs in the zone of thermo-mechanical action for the AMg6 alloy and in the zone of thermal influence for the D16T alloy. At the same time, the dependence of the temporary resistance value of the welded junction on the state of the seam weld face has not been revealed. Tests for low-cycle fatigue have shown that the endurance limit is clearly dependent on the amount of seam weld face roughness. The value of the roughness of the seam weld face for the studied alloys has been determined, in which the nature of the fracture during the low-cycle fatigue test changes from multi-stage to single-stage.