В настоящее время, согласно современной тенденции, направленной на постоянное улучшение, возникла производственная необходимость в снижении топливно-энергетических ресурсов, а также издержек и повышении прибыли от производимой продукции. В данной работе выполнен теоретический расчет минимального времени нагрева заготовок номинальным сечением 250×300 мм, длиной 3150 мм и проведены практические испытания производства продукции согласно расчетам на линии катанки стана 370/150 ОАО «БМЗ — управляющая компания холдинга «БМК». Исследована скорость перестройки поля температуры внутри рассматриваемой системы, которая прямо пропорционально зависит от размеров тела и коэффициента его температуропроводности. Проведена оценка нагрузок технологического оборудования с минимальным временем нагрева блюма перед прокаткой. Рассчитана и дана оценка производительности стана согласно фактически полученным данным. Снижены условно постоянные расходы при производстве катанки для группы с высокой производительностью. Проведена оценка возможности увеличения годовой производительности стана.

Currently, according to the modern trend aimed at constant improvement, there is a production need to reduce fuel and energy resources, as well as costs and increase the profitability of manufactured products. In this work, a theoretical calculation of the minimum heating time of billets with a nominal cross- section of 250 × 300 mm and a length of 3150 mm and practical tests of the production of products according to the calculations on the wire rod line of the 370/150 mill of OAO BMZ—the management company of the BMK holding has been carried out. The system under consideration, which is directly proportional to the body size and the coefficient of its thermal diffusivity. The assessment of the loads of the technological equipment with the minimum heating time of the bloom before rolling. Calculated and evaluated the productivity of the mill according to the data actually ob-tained. Reduced conditionally fixed costs in the production of wire rod for a group with high productivity The assessment of the possibility of increasing the annual productivity of the mill has been made.

The report proposes a variant of the use of heat exchangers with thermosyphons at thermal power plants and in boiler houses. One of the possible areas of application of heat exchangers with thermosyphons is their use as oil coolers in a gas turbine unit. At thermal power plants, in addition to thermal pollution, pollution of water, soil, and the air basin with oil and oil products
is a serious problem. In this regard, the development and research of devices for cooling oil in turbine plants is required. Such devices should provide high thermal performance and exclude pollution of the water basin with oil and oil products, as well as the ingress of water into oil. The presence of water in the oil will drastically deteriorate its characteristics and thereby create the danger of emergencies. Therefore, according to safety regulations, the oil pressure in the system must exceed the pressure of the cooling water.

Currently, thermosyphons are rarely used in industry. This phenomenon can be explained by the fact that the physics of the processes occurring in thermosyphons (jointly occurring processes of heat conduction, convection and phase transitions
in the zones of evaporation and condensation) has not yet been sufficiently studied. In addition, the accumulated knowledge in this area is, as a rule, the conclusions obtained for specific versions of thermosyphons and coolants, design schemes and
technical solutions. Analysis of the most significant results of studies of heat transfer in closed two-phase thermosyphons shows that the most significant characteristic of their work is thermal resistance.The established experimental data will further allow the development of efficient heat exchangers with two-phase heat transfer elements for their use in power engineering, refrigeration engineering, ventilation and air conditioning systems, and industry, in order to reduce energy consumption, material consumption, and improve the quality of products.

The paper considers ways to increase the antifriction properties of ceramic coatings obtained on aluminum alloys by the method of micro-arc oxidation (MAO). Two methods of reducing the rhenium coefficient of ceramic coatings have been proposed by impregnation in compositions based on mineral oils, as well as by carrying out MAO in electrolytes containing particles of dry lubricants. It has been established that impregnation with mineral oil makes it possible to reduce the friction coefficient of ceramic coatings by more than 5 times and, as a consequence, to reduce the temperature in the friction zone. Pre-treatment of the coating with surfactants further improves this performance. As a second method for increasing the anti-friction properties of ceramic coatings, the possibility of introducing solid lubricant particles-zinc oxide, colloidal graphite and molybdenum disulfide- into the coating material from electrolyte during MAO was investigated. It was found that the introduction of solid lubricant particles into the base electrolyte leads to a significant decrease in the friction coefficient, which can be explained by the direct
introduction of lubricant particles into the coating material. The studies carried out open up possibilities for further improving the antifriction properties of ceramic coatings and expanding the areas of application of aluminum alloys in friction units.