Chain Technology Research Articles

Решение задач аэрологии и экологии карьеров в условиях взаимовлияния атмосферы выработанных пространств и окружающих их территорий

The article substantiates the statement that the atmosphere of quarries is inseparable from the atmosphere of the territories adjacent to them. The manifestation of this relationship is expressed in an increase in air pollution in the areas where quarries are located, and in air pollution of quarries from external sources (dumps, factories, plants, power plants, plots of land with no vegetation, etc.). Measures to reduce air pollution inside quarries simultaneously reduce the harmful impact of open-pit mining on the environment. The use of artificial ventilation without dust and gas suppression can lead to the release of the large number of hazards outside the quarry and will have a very negative impact on the characteristics of the atmosphere of the surrounding areas. Therefore, when choosing means to combat hazards, it is required to give preference to means that trap or suppress dust and neutralize gases in the places of their formation. The influence of the main factors and parameters of the development of open-pit mining on the sanitary and hygienic conditions in the quarry and adjacent territories is analyzed and substantiated. When assessing the influence of various factors on the atmosphere of quarries and the air environment of the surrounding space, it is required also to remember about external sources of pollution, which are either an integral part of the technological chain of mining operations (external dumps, roads, warehouses, etc.), or simply located near the quarries. Sometimes the influence of external sources alone leads to exceeding the maximum allowable concentration of dust in a quarry. The influence of the ventilation schemes of quarries on both the air exchange in the developed spaces and the atmosphere of the surrounding territories is also of interest. Recommendations are given that can be useful in the design of quarries, when, in particular, there are several options for technological solutions and the conditions of natural ventilation of the developed space may be decisive. The problems of open pit aerology and the protection of the air environment of the surrounding territories should be considered inextricably linked due to their close mutual influence. To reduce the level of air pollution, the necessary measures should be envisaged, involving the resources of both quarries and local governments. The study of the problems of protecting the atmosphere should not be limited to the issues of its pollution, but also cover other air-related problems of deterioration in the working and living conditions of all those living in the region.

Identification of the self-oscillating mode in metal-cutting machines in the production of agricultural machinery

The production of modern agricultural machinery includes various technological chains machining workshops, consisting mostly of turning and milling machining centers. The influence of self-oscillations on the dynamic characteristics of mechanisms for various purposes is due to the increased requirements for the quality and reliability of products of modern machines and units. Timely detection and reduction of the impact of oscillatory processes makes it possible to qualitatively optimize the design of mechanisms. A special role in the process of operation is exerted by self-oscillations on metal-cutting machines in the processing of materials. The consequence of the self-oscillatory process is a violation of the performance of a metal-cutting machine, expressed in a parametric (accuracy) failure. In this paper, the possibility of using parametric spectral analysis for the early identification of a self-oscillating process in hexapod machine tools was evaluated, for which the objective function was determined, i.e. the value of the damping coefficient of the dynamic system.

Индустриальная политика России в условиях структурной трансформации экономики в 2023 году и в среднесрочной перспективе

The subject of the study is the transition of the Russian economy to a new industrial policy based on import substitution and orientation to domestic demand. The urgency of this task is due to the formation of a new industrial policy in the context of sanctions pressure on the Russian economy from Western countries. The purpose of the work is to develop proposals for the transition to a new model of the Russian economy based on national priorities for the development of industry and ensuring technological sovereignty. The study demonstrates Russia's need to maintain the necessary level of industrial production and ensure its growth in mechanical engineering, machine tool construction, microelectronics in conditions of declining exports and inaccessibility of Western markets. The necessity of continuing the policy of import substitution of high technologies in the system–forming sectors of the economy; ensuring in 2023-2025 the priority of the national interests of Russian industry in new technological chains based on the investment model of development is shown.; formation of guaranteed demand for Russian industrial products through the creation of large infrastructure projects. It is established that the social obligations of the state should ensure an increase in the real disposable incomes of the population, which means consumer demand. It is determined that the main risk for the Russian economy will be the deterioration of the geopolitical situation in the world. Conclusions are drawn about the need to change the sectoral structure of the economy that meets national interests; reorientation of industrial relations to a closed cycle inside the country; development of industrial clusters and the involvement of small businesses in points of industrial growth and the conclusion of long-term contracts and orders with them; leadership of the defense complex in industry.

Strategic opportunities for the development of digital platforms of industrial companies

Industrial corporations are actively implementing digital technologies, which has an impact on the content of business models. The implementation of the platform approach is the main vector of strategic development of an industrial company. The platform approach changes the processes of industrial business modelling, which have an impact on competitiveness, and forms the leading positions of an industrial company in the market. Digital platforms are becoming the basis for the design of the technological chain, and business processes. The ecosystem nature of digital platforms contributes to the increase of business innovation activity. The functioning of the platforms is aimed at creating new values, implementing the concept of client-centricity, innovative development and the formation of competitive advantages. 36 technological platforms are used in Russia. The technological platform solves ecosystem tasks to ensure the functioning of the information and communication circuit of the digital ecosystem, which determines its strategic orientation.

Казахстан и Узбекистан на мировом рынке ядерного топлива

Low-emission nuclear power industry is called upon to play an important role in the development of the global energy industry and contribute to the solution of the problem of decarbonization of economic growth. For countries betting on the development of nuclear energy, a critical issue is the sustainability of nuclear fuel supplies in the medium and long term. The countries of Central Asia, primarily Kazakhstan and, to a lesser extent, Uzbekistan, have significant resource of natural uranium and are geographically close to large consumers of nuclear fuel in Europe and the Asia-Pacific region. Both countries plan to reach carbon neutrality: Kazakhstan – by 2060, Uzbekistan – by 2050, which may be achieved through the construction of nuclear power plants. The article considers the strategy for the development of the uranium complex in both countries, the core of which is the wide access of foreign investors to the development of uranium reserves in exchange for access to export markets and modern technologies. The achievements of Kazakhstan in increasing uranium production, the barriers to the development of the national state company Kazatomprom upward the technological chain, the prospects for nuclear energy in Kazakhstan and Uzbekistan are analyzed. It is concluded that the current energy crisis enhances the global interest to the development of nuclear generation, but also emphasizes the importance of an adequate assessment of the availability of uranium reserves and the prospects for diversifying its supplies to the world market.

Organization of the Clothing Supply of the Russian Army during the First World War

The article deals with an under-researched problem of the history of the supply of the Russian army during the First World War — the organization of clothing supply. The author adopts a micro-historical approach, focusing his interest on the Shuiskii district of the Vladimir province. On the basis of the analyzed archival documents, the author comes to the conclusion that during the first year of the war, supplies were provided without the creation of special organizations. The situation changed in the summer of 1915. In July — August 1915, a network of army supply committees was created in the Vladimir province. This was the result of an attempt by the state and public organizations to build a single vertical of supply. After that, a range of items supplied to the army from the Shuiskii district expanded significantly — in addition to short fur coats, it includes sledges, carts, bushings, wheels, shell boxes. However, in the real process of fulfilling these orders the administrative and technological chain for the procurement of complex items of equipment was constantly faltering. This led to the refusal to work on complex orders — from the summer of 1916, the Shuiskii Committee switched exclusively to the delivery of cloth for foot wraps and woolen gloves to the army. In general, a detailed analysis of the work of the Shuiskii Supply Committee reveals the main reasons for the inconsistency in the work of zemstvos for supplying the army in 1914–1917.

Study of the influence parameters and operating modes of equipment on the degree of grain damage in processing lines for its cleaning

Purpose. To determine the degree (magnitude) of grain damage at different stages of post-harvest grain processing and develop a rapid method for assessing grain damage using any technical means employed in the post-harvest grain processing line. Methods. The analytical research method is based on analyzing the degree of grain damage caused by technical means in the technological lines of post-harvest grain processing. Results. It has been established that the technical means used in technological lines result in different degrees of grain damage, and an analytical dependency has been obtained to determine the percentage of grain damage for each technological tool used in the technological chain of grain processing. Through experimental studies, a dependence of grain damage on the number of passes of grain material has been obtained, based on which an empirical relationship has been established in the first approximation, which expresses the dependence of grain material damage on the number of its passes. Conclusions. The proposed evaluation system allows for a quick assessment of the most significant damage caused by technical means in the grain cleaning line without excluding it from the technological process or disconnecting it from the power supply, taking into account the changing nature of the input grain damage. Keywords: grain damage, technological lines, cleaning of grain material, analytical method, noria, grain cleaning machine.

Theoretical approaches to the re-engineering of business processes at the enterprises of the food industry of ukraine in the conditions of wartime

The activity tendencies of business structures under martial law are investigated. The main essence of the studied topic is characterized, and the practical impact of economic processes on the situation in the country as a whole is outlined. The general problems and risks faced by our private business are outlined. The tendencies of ensuring social policy in the direction of the realization of business goals and consumer satisfaction of needs are investigated. The role and importance of food industry enterprises in increasing the country's food security level are determined. The classification of enterprises by types of activity is carried out, and the analysis of losses to their economic structure during the war is given. The essence and characteristics of business process reengineering at food industry enterprises are clarified. A review of researchers who have studied related issues is carried out. Of particular relevance is the reengineering of business processes by creating a single complex of technological chains of food enterprises under optimal and rational use of resources and considering the martial law in the country. The systematic effectiveness of business processes at food industry enterprises is visualized. Proposals for improving the security conditions of food industry enterprises during the war are proposed. Obviously, the business sector of any industry, including the food industry, is dependent on the military situation in our country. The state policy can currently provide some funding for the social sphere. However, the economic and technological decline of the food industry will necessarily lead to a food crisis, shortages, and hunger. In order to avoid this, food industry enterprises in the occupied territories can receive state assistance and support during the transportation of technological capacities to the western regions of Ukraine. Conditions for these enterprises to provide preferential or free transfer to places of temporary deployment should be created, temporary production facilities and qualified personnel should be offered, etc. The Verkhovna Rada of Ukraine adopted a draft law on the peculiarities of taxation and reporting during martial law, which in particular provides the possibility of reporting documentation within 90 days after the completion or termination of martial law; absence of scheduled inspections; extension of licenses for food industry enterprises; zero quotas for the export of food products, such as rye, oats, buckwheat, millet, sugar, and salt; provision of loans for agricultural activities (sowing). Keywords: small and medium-sized enterprises, economy, state, risks, activities, public authorities, the geopolitical situation, development, economic sector, policy, production, food industry, business process reengineering, system principle, food security.

Information-analytical innovations and business models of enterprise management in the modern building development system

The article is devoted to the development of methodological principles for the formation of a process-oriented enterprise management system based on a business-target approach, which provide for the transformation of a complex of business goals of an enterprise into a topology of its centers of managerial and executive responsibility in the form of a process management pyramid using the Business Model Canvas, which allows directing activities these centers to ensure the effectiveness of the processes subordinated to them and to create a framework (software environment) for business analysis. The conceptual apparatus of the theory of process management has been improved in the context of the following definitions: "business – process" as an interconnected hierarchical pair consisting of a process (object of management) and the management process of the manager (subject of management), "management business – process" as managed by the PDCA cycle of management functions (P - planning, D - organization, C - control, A - analysis and correction) hierarchy of functional operations of the head and subordinate managers of the lower management level; "technological business process" as a hierarchy of functional operations of the manager and his subordinates of the technological process managed according to the PDCA management cycle; "pyramid of process management" as a system of interconnected management and technological business processes, structured in accordance with the business tree - goals of the enterprise and aimed at their achievement. Emphasis on the management component of business processes allows to ensure the responsibility and purposeful managerial influence of process managers on their implementation, which ensures that the enterprise achieves its target settings. The process-oriented approach to value creation, which involves the formation of a system of four chains, has gained further development: the chain of creation of managerial value of the enterprise, the technological chain of creation of consumer value, the chain of creation of value of primary data (summaries, reports), the chain of creation of managerial information value for enterprise managers ; the synthesis of these four chains and their results (consumer, information and management value) enables the maximization of the economic added value of the enterprise as the resulting indicator of its activity.

Development of internet marketing in industry 4.0

The aim of the article. The purpose of the article is the development of theoretical and methodological principles regarding the influence of the fourth industrial revolution on Internet marketing. Analyses results. The article is devoted to the study of the impact of the fourth industrial revolution on Internet marketing as an adaptive marketing activity in the New Normality. The components of Internet marketing of communication nature are presented: media advertising, contextual advertising, search marketing, and SEO, promotion on social networks; internet branding, content marketing, direct marketing, etc. Possibilities of using the Internet in marketing are presented and developed. Uspensky in the areas of marketing research and marketing communications (commodity, pricing, exchange, and distribution policy). The Industry 4.0 study was conducted and described the main expected changes in the four most important technological advances - the Internet of Things, digital ecosystems, Data-Driven Decision, and artificial intelligence. The Internet is penetrating more and more into everyday life and, in combination with new technologies in Industry 4.0, is being modified to maximize the "optimization" of life and consumption. The influence of the technologies of the fourth industrial revolution on Internet marketing is considered and the theoretical modeling of the influence of innovative technologies on the communication component of Internet marketing in the context of the presented structure is carried out. It was determined that the fourth industrial revolution requires maximum personalization of content, changes in Internet communication channels, giving meaning to the concept of "social capital", which has influencers, thought leaders, and so on. At the same time, the transition from the era of goods to the era of technology defines competitiveness as the ability to become part of the technological chain and development in conditions of economic singularity. It is crucial to identify the components of marketing activities that need research and modification to enter the new market of Industry 4.0. Conclusions and directions for further research. Based on the research conducted, this article stated the impact of Industry 4.0 on Internet marketing and presented some changes that can change the impact of innovative technologies on the main structural elements of Internet marketing and use its results in the consumer and industrial market when developing a marketing strategy. The obtained results allow formulation and develop the principles of marketing activities on the Internet, considering changes in industrialization 4.0.

Assessing the impact of fusion-based additive manufacturing technologies on green supply chain management performance

PurposeThis paper aims to identify the impacts of wire and arc additive manufacturing (WAAM) technology on the green supply chain management (GSCM) performance. Also, it intends to identify the most essential WAAM capabilities.Design/methodology/approachAn exploratory case study related to a metallurgical company using WAAM technology to repair metallic components was developed. A research framework to identify WAAM production capabilities and the different GSCM performance criteria was proposed based on the current state of the art. Primary qualitative data provided evidence for developing seven propositions relating WAAM capabilities to GSCM performance.FindingsThe paper provides empirical evidence relating to how WAAM production capabilities impact the different performance criteria of the GSCM performance. The results show that “relative advantage” and “supply-side benefits” are critical capabilities developed through WAAM. Furthermore, most of the capabilities regarding “relative advantage” and “supply-side benefits” promote a higher GSCM performance.Research limitations/implicationsThis research was carried out using a single case study research design and using qualitative data. Thus, future works are encouraged to test the propositions empirically using quantitative methodologies.Practical implicationsThe case study findings support that most WAAM production capabilities promote a higher GSCM performance. Managers could use this research to understand the capabilities developed by this fusion-based additive manufacturing (AM), become aware of the implications of new technology adoption on the supply chain environmental externalities, and develop new business models based on the WAAM capabilities.Originality/valueThis research contributes to expanding the state-of-the art related to WAAM technology by evidencing the relationship between adopting this fusion-based AM technology and green supply chain practices. Also, it provides a set of seven propositions that could be used to theorise the impacts of WAAM adoption on the GSCM performance.

Evaluation of the kinetics of direct aqueous mineral carbonation of wood combustion ash using modified shrinking core models.

The direct aqueous mineral carbonation of wood combustion ash (WCA), which is a representative high-calcium waste from combustion process, was systematically investigated by varying complex operating conditions, including reaction time, liquid-to-solid ratio (L/S), CO2 concentration, and particle size. The WCA exhibited high CO2 sequestration characteristics with an optimal carbonation efficiency of 76.4%, corresponding to a CO2 sequestration capacity of 0.314g CO2/g WCA. In addition to solid carbonates, dry residues from liquid products with high potassium contents are potential feedstocks for quality potash fertilizer. Modified shrinking core models based on diffusion-controlled mechanism were proposed to evaluate the carbonation process. The theoretical framework assumes a contracting interface mechanism where active CaO reacts with CO2 to form a product layer. The effective diffusion coefficient of CO2 through the product layer decreases over time, giving deficient carbonation efficiency. The newly proposed models corresponding to different geometrical dimensions provided more perfect fit to the experimental data when compared with the most commonly used kinetic equations. The low apparent activation energy of the carbonation reaction demonstrated the diffusion-controlled mechanism. This work is useful for improving the economics and feasibility of bioenergy carbon capture and storage (CCS) technology chain.

Methodology for the selection of manufacturing technology chains based on ecologic and economic performance indicators

When manufacturing products, it becomes increasingly important to consider ecological factors in addition to conventional key performance indicators such as manufacturing costs, time or quality. The greatest leverage for creating the most sustainable form of product manufacture is in the early stages of technology planning, because emissions can be avoided in the long term through the selection of sustainable technologies. However, there are methods that allow ecological factors to be taken into account during technology planning to supplement the usual key performance indicators, but the level of detail and the applicability are not yet sufficient. In order to support decision makers in the planning and evaluation of technology chains, this paper develops a methodology that supports technology chain selection. For this purpose, an economic-ecological key performance indicator was developed which combines manufacturing costs, material flow costs and environmental impacts determined through life cycle assessment to enable a holistic view.

A method for increasing the yield of the suitable product of humic acids from raw materials using pulse-magnetic processing

The paper studied the effect of high-intensity pulsed magnetic fields (PMF) on extraction of humic acids in order to increase the yield of the suitable product. It is proposed to add to the technological chain of reactions for the precipitation of humic acids the operation of PMF processing of raw materials at the stage of the brawn coal suspension in alkali (the first experiment) or the alkaline extraction suspension (the second experiment).Pulse-magnetic processing the brawn coal suspension in alkali and the alkaline extraction suspension was carried out at magnetic field intensities H=0.09 106 A/m and H=0.82 106 A/m with the frequency of the discharge circuit f=40 kHz and the number of pulses n=1. The experiments have shown that when humic acids are obtained by water-alkaline extraction followed by their precipitation in an acid medium, for the highest yield of the product it is necessary to add the operation of pulse-magnetic processing a raw material at the magnetic field intensity of 0.82 106 A/m at the stage of the brawn coal suspension in alkali. It can be assumed that a high-intensity PMF contributes to the transfer of humic acids to a state conducive to their more efficient precipitation and extraction.

OPPORTUNITIES AND RISKS FOR KAZAKHSTAN IN THE NEW SILK ROAD ECONOMIC BELT

This article emphasizes that in addition to the opportunities and benefits that the New Silk Road Economic Belt project brings to Kazakhstan, its development generates a number of risks that need to be clearly identified and the most appropriate tools to manage them selected. According to Kazakhstan's series of national strategic plans, the Silk Road Economic Belt offers Kazakhstan the opportunity to become a key region connecting global trade, and there are good prospects for cooperation between China and Kazakhstan in many areas, such as infrastructure, industry, agriculture, tourism, energy development and building a green economy. At the same time, the article examines the processes of functioning of the territory of the Republic of Kazakhstan in the New Silk Road Economic Belt (NSREL) system. The economic consequences of NESP in the territory of Kazakhstan and Central Asian countries are insufficiently covered in the world and Kazakhstan's scientific literature. The authors' interest in this topic is dictated by the increasing role of NESP as an unprecedented transport and logistics formation in Eurasia. The methods of systemic, comparative-geographical, statistical cartographic analysis and others have been applied in the article. Only key criteria are studied, which are the dynamics of GDP growth and inflation rates in the period from 2000 to 2020 in the RK, PRC, USA and RF; trade balance between them is shown, and the value of profit from transit through the territory of the RK, which is about 5 billion U.S. dollars, is revealed. The area of application of the results of the study can be the territories of the NEPP route in need of solving regional and social problems, improving the transport and logistics system, the convergence of domestic and foreign markets, the integration of Kazakhstan into the world technological chains.

Preface to the special issue on the 10th anniversary of Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences

Industrial biotechnology offers great promises to the development of a green, low-carbon and sustainable economy. The Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, which was formally established ten years ago, is an important powerhouse in the field of industrial biotechnology. To date, the Institute has developed a scientific and technological innovation chain, covering from basic research in life sciences to industrial application of biotechnology. On the occasion of the Institute's tenth anniversary, we publish this special issue to review the progress and trends of industrial biotechnology from six aspects, namely expert perspectives, development strategy, cutting-edge research, enabling technology, core technology innovation, and industrialization promotion. This will facilitate the construction of a green and low-carbon circular economy system, and promote the high-quality development of bioeconomy.

Research on Enterprise Financial Information Management System Based on Large Data Technology and Block Chain Fusion

In recent years, the rapid development of big data and cloud computing has had a profound impact on the integration of accounting and management accounting. In the Internet era, enterprises' financial information is more transparent and open. For modern enterprises' needs of financial management system informationization, the enterprise financial management information system based on big data scenarios is designed and implemented. The system is designed based on the philosophy of software engineering, and the functions to be implemented are selected rationally by investigating the requirements of the financial management work system of the enterprise. The system is implemented based on B/S architecture, and the design of database follows the relevant specifications in software engineering. The system can enable fine management of enterprise financial data, reduce enterprise operation cost, and thus improve the comprehensive efficiency of enterprise business.

The impact of digital technologies on the modernization of management in Russian oil and gas companies in the context of global challenges

Aim. The presented study aims to outline directions for the modernization of management in Russian oil and gas companies forming under the influence of high-tech knowledge-intensive production cycles, human capital, and artificial intelligence with allowance for the global challenges of digital technologies.Tasks. The authors investigate theoretical and practical approaches to structural changes in the management of Russian oil and gas companies that lead to the continuous modernization of the life cycle of technological chains and innovative scenarios for the development of economic entities in the long term; consider management decisions from the perspective of targets and costs, since management systems are significantly corrected under the influence of global challenges in a unified digital model of regional socio-economic development.Methods. This study uses dialectical scientific methods of cognition, complex analysis of tools used in the formation of intellectual capital on the basis of integration processes of Internet mobility, cloud computing, analytical business processes of managerial influence and social media networks, synergetic effects in the modernization of management in oil and gas companies. The study also examines scenario approaches to the development of the economic segments of the real sector through the example of ten systemically important Russian companies.Results. Digital transformation of management in oil and gas companies based on blockchain tools, artificial intelligence, online banking, trade marketplaces, and targeted advertising determines the priorities of industrial development of national economic models in the context of global challenges. The conducted scientific analysis shows a significant modernization of management in the domains of information and analytical data processing, expert evaluation of the digital array of indicators, and marketing approaches of companies driving innovative development, which actively use crowdsourcing, public interfaces, cloud technologies, virtual space, artificial intelligence, and robotics in justifying scenarios for long-term development and enhancing the competitiveness of the oil and gas sector of the Russian economy.Conclusions. Priority directions for the modernization of management in oil and gas companies are based on the use of modern digital shells, IT platforms, services involving the introduction of structural resource-saving materials, and additive technologies. The transformational model of company management involves the use of modern management tools that make it possible to optimize asset management, forecasting systems, and monitoring of strategic business units aimed at optimizing budgeting in order to increase the efficiency of project activities. A comprehensive assessment of the management of economic entities in the context of global challenges is based on criteria for assessing the functioning of internal or external accelerators, business incubators, venture incentives, the availability of innovative potential for the implementation of promising projects in the Russian oil and gas complex in the context of global challenges using public-private partnership tools on the platforms of modern software products.

Investigation of the temperature factor on the formation of a strip surface micro-relief during warm rolling

Kulik T. A. Investigation of the temperature factor on the formation of a strip surface micro-relief during warm rolling
 The temperature is studied as a factor that affects the formation of the micro-relief of the strip, which was rolled with heat. Various schemes for heating the strip to the required temperature are considered. A mathematical model of the temperature distribution over the thickness of the strip and along the length of the deformation zone is obtained. The temperature distribution along the height and length of the deformation zone is not the same. Our studies have shown that the heating scheme is better when the heater is inside the roll. This is better because it gives a smaller temperature spread along the length of the deformation zone. That is, you can better use temperature as a factor. The roughness of the strip during warm rolling is influenced by several factors. If we consider the process with the final tempering, then one of the main factors is temperature. We studied how temperature affects the printability coefficient of the micro-relief from rolls to metal. Experiments were carried out to confirm the results. The experiment consisted in indentation a single indenter into a metal sample. Indenters of various shapes were used, similar to the shape of single micro-protrusions of the real relief of the work rolls. The sample was heated to different temperatures in the drying box, then the depth of its indentation was measured. Experimental studies have shown an almost linear dependence of the penetration depth on temperature, that is, the dependence of the printability coefficient on temperature. This form of dependence was observed for all forms of the indenter, although with different intensity. So, we can confidently say that the temperature factor can be used to control the parameters of the strip roughness that is needed. To do this, at the final stage of the technological chain of rolling, which is temper rolling, you can use the work rolls of the desired micro-relief, and the strip of the desired temperature.

Monitoring of grinding condition in drum mills based on resulting shaft torque

Grinding is the most energy-intensive process among all stages of raw material preparation and determines the course of subsequent ore beneficiation stages. Level of electricity consumption is determined in accordance with load characteristics forming as a result of ore destruction in the mill. Mill drum speed is one of process variables due to which it is possible to control ore destruction mechanisms when choosing speed operation mode of adjustable electric mill drive. This study on increasing energy efficiency due to using mill electric drive is based on integrated modelling of process equipment – grinding process and electromechanic equipment – electric drive of grinding process. Evaluating load torque by means of its decomposition into a spectrum, mill condition is identified by changing signs of frequency components of torque spectrum; and when studying electromagnetic torque of electric drive, grinding process is monitored. Evaluation and selection of efficient operation mode of electric drive is based on the obtained spectrum of electromagnetic torque. Research results showed that with increasing mill drum speed – increasing impact energy, load torque values are comparable for the assigned simulation parameters. From the spectra obtained, it is possible to identify mill load condition – speed and fill level. This approach allows evaluating the impact of changes in process variables of grinding process on parameters of electromechanical system. Changing speed operation mode will increase grinding productivity by reducing the time of ore grinding and will not lead to growth of energy consumption. Integration of digital models of the technological process and automated electric drive system allows forming the basis for developing integrated methods of monitoring and evaluation of energy efficiency of the entire technological chain of ore beneficiation.