Magnetic-centrifugal drying of compressed air of pneumatic systems of machine-building enterprises

The article analyzes such basic methods of drying compressed air of pneumatic systems of machine-building enterprises as condensation, sorption, diffusion and force action and determines the advantages and disadvantages of each of these methods. It is noted that the method of force action on water particles due to the use of the centrifugal force allows you to remove only droplet moisture, and vaporous moisture remains in the compressed air. With further cooling of the compressed air, condensate reappears in it. Other methods are more efficient, but require consumables or complex devices for drying compressed air, which ultimately leads to an increase in the cost of such devices and an increase in operating costs. Based on the conducted analysis and on the fundamentals of theoretical mechanics, magnetic field theory and molecular physics, a method of magnetic-centrifugal drying of compressed air has been developed. The essence of the method is to use the Lorentz force, which acts on a water particle (a molecule, a dimer, a trimer, etc.) and coincides in the direction with the centrifugal force. When using the safe supply voltage of a 24 V solenoid that creates a magnetic field in which an electrically charged water particle moves, it is possible to increase the radial force (compared to the centrifugal force) acting on this particle by about 70 times. The authors also consider the methods of ionization of water particles that allow knocking out electrons from their outer shells. Experimental studies conducted on a mock-up sample showed a fairly high efficiency of this method, since it was possible to achieve the 3rd class of purity according to ISO 8573-1: 2001.

Turkey will address more scandalous pollution cases

Headline TURKEY: Scandals force action in some pollution cases

Load bearing capacity of road illumination pole installed on bridges

<p>Collapse and falling of columnar structures such as road illumination poles installed on a bridge have been confirmed in the past earthquakes. Therefore, it is important to evaluate the seismic resistance of columnar structures from the viewpoint of securing the function as an emergency transportation route in the event of disaster. In this study, the destruction order and destruction form of the road illumination pole in the external force action were analyzed and verified, and the model specimen was produced to carry out the static load test. As a result of the experiment, it was shown that anchor bolts and wall concretes of the base were damaged antecedently.</p>

Features of Electrostatic Fields and Their Force Action When Using Micro- and Nanosized Inter-Electrode Gaps

The present work is devoted to assessing the influence of discreteness of electric charge distribution in the double electric layer on the characteristics of the electric fields and their force action in capacitor structures with small interelectrode gaps. Due to the fact that modern technologies often use submicron-sized interelectrode gaps, it is no longer possible to consider the electrodes uniformly charged because of the discreteness of the electric charge. The corresponding development of a mathematical and physical model for the study of a non-uniform electric field is suggested. Numerical calculations are carried out, expressions, criteria, and results that are convenient for practical evaluations are obtained. The physical and mathematical model for force characteristics of a non-uniform electric field is developed. With a sufficiently small size of the interelectrode gap, the integral force effect of discretely distributed charges can be significantly higher than with a uniform distribution of the same charge. At reasonable surface charge densities, these phenomena are usually observed at interelectrode gaps less than tenths of a micrometer.

Method for studying the parameters of the surface hardening of parts with a protective coating

Поверхностные покрытия деталей получили широкое распространение в технике, в том числе для судовых энергетических установок, а также вспомогательных судовых механизмов и устройств. Для экспериментального исследования работоспособности деталей на контактные силовые воздействия используются как цельные образцы, разделяемые после силового воздействия в месте его приложения, так и составные образцы, силовое воздействие на которые производится в месте стыка отдельных элементов. В последнем случае деформирующее разделение образца и получение нежелательных дополнительных пластических деформаций в ходе разделения исключаются. При обеспечении равной точности результата этих методов второй является более надёжным, не требующим контроля побочных деформаций для анализа зоны деформации получаемой от планового силового контактного воздействия. Нанесение поверхностного слоя осложняет использование составных образцов при исследовании зон пластической деформации Процедура их получения и испытания может быть усовершенствована. Предлагаются варианты формирования образцов, а также способы их получения и использования. Делается заключение об упрощении процедуры экспериментальных исследований при использовании предлагаемых образцов и получении более достоверных результатов. Обращается внимание на возможность одновременного ведения испытания для разных материалов деталей, что предполагает сокращение расхода наносимого материала покрытия и трудоёмкости работ. Surface coatings of parts are widely used in engineering, including for ship power plants, as well as auxiliary ship mechanisms and devices. For experimental study of the performance of parts for contact force effects, both whole samples that are share separated after the force action at the place of its application, and composite samples that are subjected to force action at the junction of individual elements are used. In the latter case, deforming separation of the sample and unwanted additional plastic deformations during separation are excluded. While ensuring equal accuracy of the results of these methods, the second method is more reliable and does not require control of side deformations for analyzing the deformation zone affected by the planned force contact action. The application of a surface layer complicates the use of composite samples in the study of plastic deformation zones. Procedure for obtaining and testing them can be improved. Options for forming samples, as well as ways to obtain and use them are offered. The conclusion is made about simplification of the experimental research procedure when using the proposed samples and obtaining more reliable results. Attention is drawn to the possibility of simultaneous testing for different materials of parts, which implies a reduction in the consumption of the coating material applied and the complexity of work.

STUDY OF THE INFLUENCE OF THE CARBON CONTENT IN STEEL ON THE STRUCTURE AND MICROHARDNESS OF THE SURFACE LAYER AFTER ELECTROMECHANICAL PROCESSING WITH IMPACT

Experimental data of metallographic and x-ray diffraction studies of the surface layer of various grades of steels subjected to electro-mechanical processing (EMO) with dynamic (shock) application of the deformation force are presented. The influence of the carbon content in steel on the formation of the structure, microhardness and depth of hardening of the surface layer obtained in the field of pulsed temperature-force action is considered.

ON THE STABILITY OF PLANE MOVEMENT OF MOBILE ROBOTS

The problem of stability of the plane motion of mobile robots, including those with walking propulsion devices, is considered. Two modes of propulsion devices are compared: "pushing" and "pulling". The solution of two model problems on the plane motion of a solid body caused by kinematic and force action is presented.