Vol. 3 No. 12 (2021)

This article describes innovative step-by-step technologies for the manufacture of foam models and cast steel parts of the harrow teeth with a wear-resistant hard-alloy coating by casting on gasified models. Methods of gluing gasified models, the processes of forming, rammers, pouring liquid metal and the formation of cast parts of the harrow teeth are shown. Compositions, microstructures and properties of hard-alloy coatings made of 35GL steel are given. The surface thickness of the coating on the finished harrow tine parts is shown. The hardness and microhardness of the surface and subsurface layers of the samples were determined. Optimal modes of heat treatment with double phase recrystallization for these parts have been developed. It has been proved that heat treatment with double phase recrystallization increases the wear-resistance and durability of finished steel parts by 2-3 times.

The article analyzes the effect of the vaporization temperature of gasoline on the wear of engine parts and the efficiency of fuel consumption.

Low starting temperatures and 10% distillation, especially in hot weather, the power system generates vapors, the volume of which is 150-200 times more than the volume of gasoline, which causes interruptions or engine shutdown. 

Due to poor evaporation of heavy fractions, oil films are washed out of the walls, and wear increases. Restrictions on the boiling point of 195^О С gasoline are proposed.

The level of conveyorization of mining enterprises is constantly increasing. This article determines the distribution of the forces applied to the cross-sectional surface of the belt, when rocks are transported by belt conveyors, the effect of dynamic forces on the bending of the belt and middle roller length rocks on the basis forces the roller supports.

In complex studies of geological and structural, morpho-structural analysis, mineralogical mapping of quartz formations, detailed geochemical works and analysis of geochemical fields, predictive and prospecting signs of gold ore taxon have been developed ore zone, ore field, deposit, ore body by groups: morphostructural, stratigraphic-lithological, structural-tectonic, magmatic, geophysical, metasomatic, mineralogical, geochemical and geological-genetic model of a gold-bearing ore-forming system in the zone of collapse. Favorable geological and structural conditions for the localization of gold mineralization in the Karakchatau mountains are associated with areas of manifestation of long-term tectonic-magmatic activation in metalliferous sediments of contrasting lithological composition. The confinement of the occurrences of gold mineralization to the blocks formed by transverse faults in the areas of their intersection with the Karakchatau shear zone was noted. The ore-localizing ones are mainly intrablock and non-extended interblock tectonic structures.

This publication examines the gradual introduction of digitalization in the agricultural sector, with the help of which it is aggravated by the increased concentration of the market, which becomes noticeable in digital industries. As a result, the benefits of any increase in labor productivity may go to the owners of a small number of companies, and the structure of income distribution may be distorted to an extent that is incompatible with social stability.

Gothic - Western, Central and Eastern Europe, developing in the Middle Ages, is characterized by the Gothic style of monumental architecture and buildings built in this style. The religious, socio-political factors that led to the emergence of this style are highlighted. In addition, there is historical information about the level of development of graceful ornamentation, sculpture, glass mosaics and the technique of monumental construction during this period. This article describes the Roman style of monumental architecture and the buildings built in this style, covering the north of France, Germany and northern Italy in Western Europe, where the Roman style was in decline for a long time in the XI-XII centuries. The religious socio-political factors that gave rise to this style are described. It highlights the contradictions between nations and the church in their quest for democracy, and how it is embedded in the art of architecture.

The article shows the work of flexible reinforced concrete structures in the state of complex stress under technological temperature and external loads, the formation of additional stresses and deformations relative to normal temperatures, the calculation of the temperature formed in the section of the element.

Investigation of some characteristic values of concrete in reinforced concrete elements is necessary. This survey makes it possible to assess the actual work of concrete in the design of reinforced concrete structures.

This article describes the use of CONSTRUCTIONS in the production and construction of repair-replaceable elements (prefabricated, prefabricated monoliths and monoliths) during the reconstruction of reinforced concrete structures using basic protection means, as well as restoration and reinforcement through the construction of control elements. The following information is provided.

The article deals with the effect of hydrophobizing additives on the thermophysical properties of expanded clay concrete.

The issues of application of several methods of vertical planning in solving problems related to land works arising in the process of reconstruction and reconstruction of cities are presented.

Definition of fall condensate in unnez surface of enclaneres in aerosols operation. Attendance in induslrial fuld of alrosols notablu influence on chanching of relative humaditu and fall of condensate in inner surface of enclosures and their operation, it is nessaru to take into consideration in calculation.

The article provides information on the characteristics of the design of reinforcement of flat-surface structures and welded welded rod structures in seismic areas. Recommendations with optimal solutions in problem solving are given.

In the article considered from the best path physico-chemical properties hydraulic oils. The results of laboratory analyze аt studies the hydraulic oils with molybdenum sulfide based additives and recommendations for their use.