This article is the twelfth publication within the framework of the implementation of the program “Development of a Prototype of a Modernized Border Vehicle to Enhance the Efficiency of Operational and Combat Tasks in the Protection of the State Border of the Republic of Kazakhstan,” funded by the Committee of Science of the Ministry of Science and Higher Education of the Republic of Kazakhstan (BR218010/0223). The article outlines and justifies the necessity and concept of developing a prototype of a multifunctional border vehicle to improve the effectiveness of border protection tasks within the “Smart Border” concept and the creation of mobile and efficient response forces for the Border Service of the National Security Committee of the Republic of Kazakhstan (NSC RK). It also presents the idea of developing a second experimental model of a special border vehicle. The Border Service of the NSC of the Republic of Kazakhstan (hereinafter referred to as the BS) faces the challenge of increasing the efficiency of state border protection, capable of countering various threats and challenges in the border space on a qualitatively new level. Achieving this goal is extremely difficult without research and the application of innovative technologies. Therefore, one of the relevant aspects of improving border security is the integration of the “Smart Border” concept into the operations of border units, as well as the development of mobile and effective BS response forces. The successful implementation of this concept heavily depends on the development of a range of vehicles and mobility-enhancing tools for the BS units directly responsible for protecting the State Border.

https://doi.org/10.48081/BYID3394

2025

Issue 2

This paper presents a mathematical model of adaptive control for a hybrid crank press with feedback. The dynamic model of the press includes both mechanical and electrical components, and real-time changes in system parameters are taken into account. An adaptive control law is proposed, based on parameter identification methods and adjustment of the control action depending on the current state of the press.The stability of the system was analyzed, and the advantages of the proposed approach over classical control methods were demonstrated. The article considers methods for synthesizing control systems for solving tracking problems in multidimensional stochastic models operating under conditions of incomplete information about the object's state and parameters. The design of control systems is carried out through gradual addition and complication of the methods and algorithms used: from optimal control for deterministic models to adaptive tracking systems for stochastic models with incomplete and noisy measurements. The primary research method used is simulation modeling. The results of modeling confirm the effectiveness of the developed control system under varying loads and external disturbances. The proposed system demonstrates high stability and the ability to adapt to a wide range of operating conditions.

https://doi.org/10.48081/ZMYU5973

2025

Issue 2

Studies of the influence of working conditions on the efficiency of operation of mine dump trucks were carried out. The peculiarities of operation of mine dump trucks during ore transportation from deep quarry horizons are taken into account. As the analysis of mining and transportation operations in quarries shows, there is great potential to improve efficiency and reduce the cost of mining and transportation operations. An important opportunity to reduce the cost of mining and transportation operations in quarries is the efficient organization of a fleet of excavators and cars in terms of optimizing the total size of the fleet and the number of dump trucks that come into shift. An important potential for reducing the cost of mining operations at the quarry is the efficient organization of the excavator and automobile fleet in terms of optimizing the total number of the fleet and the number of trucks leaving for shift. Analysis and studies of the condition of freight transport show that in order to ensure the planned motor transport operations in the amount of 75 million tons per year, it is not necessary to maintain a fleet of 30 or more truck dump trucks, enough Komatsu truck dump trucks 630E subject to the relevant mining conditions at the quarry. One of the possible directions for increasing the efficiency of the mining and transport complex, which requires additional research, is the use of combined road transport in terms of "face - loading warehouse". This approach involves the use of Komatsu 630E truck dump trucks in lower horizons with overloading on a large-sized BelAZ-75135 dump truck, which is most adapted to existing conditions.

https://doi.org/10.48081/IGZX1760

2025

Issue 1

The article analyzes the formulation of a one-dimensional problem of plastic deformation of the deposited layer of the surface of parts during rolling with a cylindrical roller. The method of finishing and strengthening the surface of parts using rolling in the surface of parts with steel cylindrical rollers ensures the formation of low roughness, residual compressive stresses in the surface layers and fine-grained structure by depositing metal in thickness in the seam area to create plastic elongation deformations in the longitudinal and transverse directions. When finishing and strengthening the surface of parts using running-in, it is characteristic that the deformation of metals during processing at high temperatures is determined by the significant influence of deformation rates on stresses. This dictates the need to calculate stresses and strains based on the equation of state of rheonomic bodies. The purpose of the study is to determine the stress components and force factors of the technological process of finishing and strengthening surface treatment of parts based on the numerical solution of a one–dimensional nonlinear problem involving the calculation of the stress-strain state in the deformation focus based on the theory of creep. The article examines the process of deformation of a material under the action of an absolutely rigid cylindrical body (roller) performing a plane-parallel motion. It is established that the complete elimination of residual deformations is achieved if the plastic elongation deformations created by running-in in the layer and adjacent sections of the base metal turn out to be equal in value to the residual plastic shortening deformations in these zones. It is determined that the residual longitudinal stresses in this case may be close to zero. In the one-dimensional formulation of the problem, relatively general formulas are obtained for calculating the stress-strain state, pressure and friction forces on the contact surface, forces and moments acting on the roller.

https://doi.org/10.48081/RUMT3420

2025

Issue 1

The use of sand and resin molds in foundry has been known since the sixties of the last century. This shape makes it possible to obtain castings with high surface purity and high dimensional accuracy and casting geometry. Also, sand-resin forms have a long life, low hygroscopicity and a number of other advantages. The widespread introduction of shell forms into production was hindered by two of their drawbacks - the formation of harmful emissions when heating a thermosetting resin - ammonia, phenol and the relatively high cost of the resin. The elimination of both shortcomings was previously proposed by the team of authors of this project, possibly when used simultaneously with the thermal effect on the mixture of static pressure. The use of molds from sand-resin mixtures ensures the production of high-quality castings. Increasing the efficiency of the casting process makes it necessary to improve the technology for manufacturing casting molds. In this regard, studies aimed at improving the technological process that ensures the regulation of the properties of the form and their uniformity throughout the volume are relevant. It is possible to increase the degree of control of the parameters of the manufactured shell mold. Considering the change in the state of aggregation of the resin during the formation of the shell (solid - liquid - solid), it is advisable to change the pressure value (that is, use a variable pressure value).

https://doi.org/10.48081/FPGE1681

2025

Issue 1

It is known that reindeer antlers are recognized raw materials for obtaining medicines and the only complex of animal origin in the world with powerful preventive and health-improving effects. Scientists have extracted various biologically active compounds such as peptides, lipids, polysaccharides, proteins, nucleotides, glycoproteins, and trace elements from deer antlers. However, the nutrient composition of velvet deer antlers has received limited attention as a potential bioactive resource. The study of the bioactivity of blood and antlers is crucial for expanding their application in functional foods and nutraceuticals. Therefore, attention should be paid to in-depth scientific research of the unique compounds of domestic deer antlers to develop new high-quality and safe health products. This article presents the results of a study to determine the chemical components of deer antlers from the Borovoye area of the Akmola region. The examined antlers revealed a high content of protein (16.45%), fat (26.01%), calcium (355 mg/100 g), phosphorus (5662 mg/100 g), and B vitamins. The safety of antlers is confirmed by the absence of pesticides, radionuclides, coliform bacteria, sulfite-reducing clostridia, Staphylococcus aureus, yeasts, and pathogens.

https://doi.org/10.48081/EPCD3886

2025

Issue 1

The article is dedicated to the study of using technogenic waste, such as electric steelmaking slags and sludge materials, for the production of refractory products that meet the requirements of GOST 390-96. The foundation of the research is the application of a water-based ceramic binder suspension containing micro-silica dust activated in an alkaline medium. An important aspect of the work is the addition of self-dispersing slag, which helps to improve the thermal resistance of the materials. One of the features of the proposed technology is the absence of the firing stage, which reduces the energy consumption of production. Instead of firing, the products undergo a two-stage drying process. Waste from overburden rocks was used to improve the plasticity of the batch, which helps reduce costs and increase the environmental and economic efficiency of the process. The use of such waste also helps address the problem of technogenic waste disposal. The paper considers the effect of slag and granulometric composition on the key properties of refractory materials, such as strength, thermal resistance, and porosity. It was established that the addition of slag indeed improves thermal resistance, but when its content exceeds 20%, the strength of the material decreases, which requires careful optimization of the batch composition. Optimized molding methods are used to form the refractory products, ensuring the achievement of the required characteristics. As a result of the research, the batch compositions were identified that ensure maximum thermal resistance and strength of the products, making them suitable for use in metallurgical furnaces and other high-temperature equipment. The research results contribute to the creation of more efficient and environmentally safe technologies for the production of refractory materials using technogenic waste as raw materials, which helps reduce the negative environmental impact and optimize industrial processes.

https://doi.org/10.48081/WLJE5161

2025

Issue 1

This article discusses the reagent treatment of wastewater from oil refineries using composite coagulants from «ASCOR Production Association» LLP. The article provides the main required quality indicators of treated wastewater, briefly lists the stages of preparation of reagent treatment. The methodological and instrumental aspects of laboratory tests, their purpose, monitoring of the main indicators of wastewater treatment quality, as well as the result are presented. The program shows the chemical reagent used at the enterprise, chemical reagents for wastewater treatment offered by «ASCOR Production Association» LLP, briefly describes the methodology of laboratory research, the devices and equipment used, and the effect of selected chemical reagents; describes step-by-step processes of changes in the quality of wastewater treatment, depending on the reagents and their dosages. In the section summary results and discussion, diagrams of various reagent treatment programs for the purification of oily wastewater are proposed, depending on the effect of various powdered coagulants on the clarification of oily wastewater. The comparison of reagent treatment programs implies a comparison of the results obtained according to the criteria for evaluating the quality of purified water, the most effective use of powdered composite coagulant at an oil refinery. Based on the results of laboratory tests, graphs and diagrams were constructed that allow us to determine the effectiveness of the implementation of the reagent treatment program, reducing the content of petroleum products and suspended solids to the requirements established at the enterprise.

https://doi.org/10.48081/JDGX4489

2025

Issue 1

This article says that in most developed countries, relevant organizations and institutions analyze road accidents and identify the causes that caused them, and that in different regions of each country, the ability of the GIS system differs in roads, the environment and other conditions, but they all have certain common patterns. Drivers choose the driving mode based on the analysis of the received information. During the movement, its volume varies widely. The reliability of the driver's work and his efficiency can be maintained at the required level only if the amount of information received by him is within optimal limits. Improving the reliability of the driver's work as an operator of the driver – car - road -environment system is a priority in the field of improving traffic safety. The main factors affecting performance are: fatigue, lack of sleep, stressful situations, as well as prolonged driving. During the study, measures were considered to help restore the driver's performance (proper organization of rest, breaks, physical exercises). Technical and organizational measures to ensure road safety were also studied: road signs and markings, speed limits, control of dangerous areas. The study includes recommendations aimed at improving safety measures for drivers and maintaining their health. This helps to prevent accidents by improving the driver's performance.

https://doi.org/10.48081/NJLF4908

2025

Issue 1

In the present study, the possibility of eliminating casting defects by the method of equal-channel angular compression (ECAP) in relation to zirconium alloy E110, used as a structural material in nuclear power engineering. To simulate a large casting defect, a through hole with a diameter of 5 mm was created on the side surface of the workpiece. Two methods were used in the course of the study: computer simulation of the ECAP process in the Deform 3D program and a physical experiment with real samples. As a result of computer simulation using the finite element method, process simulations were obtained for three pressing cases with different channel junction angles: 45°, 90°, 135°. The patterns of metal flow in the matrix and the process of defect closure are studied. A real experiment was carried out for the circuit with the largest channel junction angle (135°). As a result, it was possible to achieve almost complete closure of the defect, leaving only a residual crack of 25 microns in size after two passes through the ECAP matrix. The presence of a residual crack indicates the need to optimize the technological parameters to increase the efficiency of the process. An increase in the number of passes or the use of matrices with smaller channel intersection angles can contribute to the complete closure of defects. In general, the study confirmed the effectiveness of the RCUP method for eliminating casting defects in zirconium alloy E110.

https://doi.org/10.48081/FHYS5327

2025

Issue 1