Mechanical Engineering Commons^™

Evaluation Of The Thickness Of Vacuum Metal And Semiconductor Coatings Using Computer Programs, Bahrom Igamov, Ilkhom Bekpulatov, Aleksey Kamardin, Tulkun Kamilov, Ilhom Turapov, D Igamova

Technical science and innovation

Comparative studies of the thickness of coatings of such metals as Cu, Ag, Cr, Co, and also Mn4 Si7 on polished substrates made of Si, Si O2 / Si structure, ST - 50 glass ceramic, mica were carried out. The coatings were deposited in vacuum using thermal evaporation and magnetron sputtering. The thickness and uniformity of deposited coatings on rotating substrates are estimated by optical measurements and computer simulation. Mathematical models for the formation of coatings on flat substrates have been developed. The possibility of the optimal position of the substrate for the formation of functional coatings uniform in thickness …

Study Of The Thermodynamic Properties Absorbation Sulfur Storage Gas Of Zinc And Copper Industry, Berdiyarov Tilovkabulovich Berdiyarov Dr., Sh. T. Khojiev, S. T. Matkarimov, Sh. Munosibov

Technical science and innovation

The article considers the problems of utilization of industrial gases formed in the production of copper and ore containing sulfur anhydrides. Currently, the composition of process gases entering the gas purification department is approximately 6-7% SO₂, 0.2-0.3% SO₃ and other gases, until sulfuric acid is obtained from these gases, the sulfate is treated in a counter-scheme with 8% sulfate acid. The aim is to first reduce the temperature of the exhaust gases and second to avoid flying components such as as As, F, Se. As a result of the studies, the amount of SO₂ in the …

Protection Of Transport Structures From Natural Emergencies, Shavkat Х. Abduazimov, Ravshan S. Razikov, Gani A. Kurbanov

Technical science and innovation

In the mountainous and foothill areas of the republic in spring and late autumn, heavy rains and floods cause landslides on the slopes, landslides as a result of coagulation of most of the land. At the same time, careless grazing of livestock on the slopes, felling of trees in the foothills, as a result of strong floods, the water flow on the slopes flows downhill, washing away all the debris, rocks and sand, endangering the movement of passenger and freight trains. . This article aims to protect against the above-mentioned situations, to ensure the safety of transport facilities. At the …

Economic Test Results Of Experimental Spring Device, Husniddin D. Irisov, Alexander P. Kartoshkin

Technical science and innovation

The article conducts economic research on the development of resource-saving technologies in the artificial shedding of cotton leaves and new scientific and technical solutions for the formation of high-dispersion droplets of spraying equipment, including the technological operation of high-dispersion droplet-forming spraying devices for small-volume fan sprayers.The experimental spraying unit, equipped with advanced cultivators, was tested in the field under typical field conditions and optimal agro-technical terms for the agro-technical evaluation test area. During the study, test schemes were adopted to determine the performance of sprayers in the field, soil type, relief and microrelief, soil moisture and hardness were determined in …

Combined Devices Of Facts Technology, Bahrom Ravshanovich Normuratov Associate Lecturer, Misrikhan Misrikhanov, Shukhrat Khamidov

Technical science and innovation

FACTS - Flexible Alternative Current Transmission System technology is a family of devices, each of which can be used individually and in concert with other devices to control the interrelated parameters of the electrical power system. The mission of FACTS technology is to improve the control of power flows in both steady-state and transient modes of EPS. Flexibility of Electric Power Transmission, applied as "The ability to adapt to changes in transmission system or operating conditions while maintaining sufficient operating limits in steady-state and transient modes". Controlled Flexible AC Transmission Lines - Flexibility from Electric Power Transmission means "AC Power …

Main Factors That Influence The Thermal Stress State Of Piston Engine Parts, J F. Ismatov, A I. Yangibayev, N V. Vadulina, A A. Jalilov

Technical science and innovation

The development of a holistic, effective, and scalable structure of economic management, as well as the introduction of a program to improve the technical level and efficiency of machinery, are two of the most important concepts for the deep reconstruction of the Republic of Uzbekistan's economic process. Vehicles with diesel engines are gradually being introduced to our country's car fleet. Modern diesel engines are being developed by boosting them: increasing the average effective pressure and speed. Therefore, high reliability and service life, fuel efficiency and environmental performance are the main criteria for their quality. Forcing diesels leads to an increase …

Experimental Study Of Drying Yacon Tubers, U K. Khujakulov, Sh A. Sultanova, J E. Safarov

Technical science and innovation

This study discusses the method and experimental drying unit for drying yacon tubers at different temperatures. And also the scheme of experimental drying unit is given, which controls temperature, speed of warm air and shows the mass of dried material. The cross-sectional area of the flow in the tunnel is 20×20 cm, the thermal air passed horizontally through a chute with holes and a surface area of 12×12 cm. The exhaust gas did not circulate in this experiment. The accuracy of the temperature control system was 0.1 °C, the weight control system 0.1 g. The variation of moisture ratio depending …

Electric Vehicle Internal Support System, M A. Xudoyberdiyev, L V. Kravchenko, J E. Safarov, B B. Tuychiboyev

Technical science and innovation

At present, it remains relevant to protect the environment around the world, to prevent the deterioration of ecology, to ensure the health of people, to reduce the amount of exhaust gases emitted into the atmosphere in the preservation of the animal world. Currently, in solving these pressing problems, instead of cars with internal combustion engines, which are used in the automotive industry, energy-efficient electric cars that meet the modern demand, produce less exhaust gases to the environment, work without noise, have a high level of manageability, traction and braking dynamics, stability, safety and comfortability. During the use of these electric …

Causes Of Rolling Stock Brake Equipment Failures, O T. Kasimov, Sh I. Mamaev, A V. Grishenko

Technical science and innovation

Reliable operation of the rolling stock and devices of railway transport is the basis for ensuring the throughput and transport capacity of railways, as well as safety.The article is dedicated to the current day of the topical topic: increasing the reliability and analyzing the causes of brake equipment failures in locomotives in the conditions of JSC "Uzbekistan Temir Yollari".On the rolling stock of railways of JSC "Uzbeksiton Temir Yullari" five types of brakes are used: parking (manual), pneumatic, electro-pneumatic, electric (dynamic and reversible), magnetic-rail and are used as additional to EPT.The article presents an analysis of the …

Problem Solving Methods For Synthesis Of Physical Principles Of Mechatronic Module Operations In Intelligent Robotic Systems, Nazarov Khayriddin Nuritdinovich

Chemical Technology, Control and Management

The scientific paper investigates the methods for solving problems of synthesis of physical principles of operation of mechatronic modules of intelligent robotic systems are considered.

In addition, it deals with the specifics of the process of synthesis of the physical principles of the operation of mechatronic modules using predicate models, list models and information matrices of physical and technical effects.

It shows the interpretation of the components of the model of the system for the synthesis of the physical principles of operation of mechatronic modules of intelligent robotic systems and automatic control and the features of the synthesis algorithm for …

Developing Algorithms For Automating The Processes Of Forming The Optimal Structural Composition Of Production - Technological Modules, Alisher Mamajanov, Sarvar Botir Ugli Nabiyev

Chemical Technology, Control and Management

In this research, we developed appropriate algorithms for the formation of the optimal structural composition of production - technological modules (PTM) based on the automation of the processes of determining and ensuring the functional-parametric compatibility (FPC) of their components. These algorithms are based on the developed mathematical models on the basis of the use of analytical methods for implementing the interconnection between the main components of the PTM.

Computational Design Of Nonlinear Stress-Strain Of Isotropic Materials, Askhad M.Polatov, Akhmat M. Ikramov, Daniyarbek Razmukhamedov

Chemical Technology, Control and Management

The article deals with the problems of numerical modeling of nonlinear physical processes of the stress-strain state of structural elements. An elastoplastic medium of a homogeneous solid material is investigated. The results of computational experiments on the study of the process of physically nonlinear deformation of isotropic elements of three-dimensional structures with a system of one- and double-periodic spherical cavities under uniaxial compression are presented. The influence and mutual influence of stress concentrators in the form of spherical cavities, vertically located two cavities and a horizontally located system of two cavities on the deformation of the structure are investigated. Numerical …

Special Aspects Of Fuel Saving Of Agricultural Equipment And Its Environmental Influence On Oil, Ramzjon Hamroyev Assistant, Amirku Irgashev Dr. Professor, Yuriy Kuznetsov Dr. Academic

Technical science and innovation

The national economy of the country uses various machines and mechanisms, the vast majority of which are road transport, operated in various sectors of the Republic. Due to the fact that they operate in the severe operating conditions associated with off-road and high dusty environment, there is an intensive lubricant contamination of transmission units. This article studies the rates of fuel consumption when using agricultural machinery, such parameters as fuel and lubricant efficiency, flammability, motor ability of agricultural machinery, speed. In addition, the article presents the results of bench tests to determine the quantitative and qualitative indicators of abrasive particles …

Research Of The Process Of Continuous Hydrogenation Of Benzene In The Presence Of Modified Catalysts, B Kedelbaev Dr. Professor, K Lakhanova Phd, G Iztleuov, Sadritdin Turabdzhanov Dr., Professor

Technical science and innovation

The technology has been developed for the production of unsaturated alloy nickel hydrogenation catalysts. The results of the study of the phase, chemical compositions and structure of nickel alloys and catalysts showed that the ferroalloy introduction as a modifying additive affects the NiAl₃ / Ni₂Al₃ ratio. The studied alloying metals are practically insoluble in alkali and exist in the catalyst in dissolved states. All these changes favorably affect the catalytic properties of modified nickel catalysts in the benzene hydrogenation reaction. A systematic study of the stationary catalyst activity with addition of ferroalloys in the continuous catalytic …

Efficiency Of A Helio Heating Collector, Azamat Usenov, Shaxnoza Sultanova Phd, Jasur Safarov Dr., Professor, Tojiniso Rahmanova

Technical science and innovation

A study of several industrial heat demand identified several industries with favourable conditions for the use of solar energy, the most important industrial processes using heat at moderate temperatures are: sterilization, pasteurization, drying, hydrolysis, distillation and evaporation, rinsing and cleaning and polymerization. The study describes some important processes and the temperature range required for each of them.

In this paper, a model of a solar water-heated drying device for drying ginger (Zungiber) root and other medicinal plants has been developed and studied experimentally. Using the model, the useful energy and temperature coming from the solar collector were analysed. The graphs …

Research Results For The Selection Of Working Body Types For Strip Tillage Of Soil, F Alimova, B Primkulov, A Tolibaev, M Gulamov

Technical science and innovation

The article describes the results of research on the selection of working body types for strip tillage of soil. Information on the advantages of the technology of minimal soil tillage (Strip-Till) is presented. The data obtained as a result of experimental studies to determine soil moisture and hardness, as well as the quality of soil tilling by the recommended working bodies, are presented. The arrangement schemes of working bodies for the considered technology have been drawn up. The general concept of the development of a combined aggregate on energy-resource-water-saving technologies for the cultivation of crops in permanent furrows and in …