Application of System Analysis for Technological Processes Investigation

2020 ◽  
Vol 834 ◽  
pp. 24-31
Author(s):  
Marina Polyakova ◽  
Elena Shiriaeva ◽  
Milyausha Iansaitova
Keyword(s):  
Technological Process ◽  
Hot Rolling ◽  
System Analysis ◽  
Rolling Process ◽  
Geometrical Parameters ◽  
Coating Process ◽  
Technological Parameters ◽  
Rolling Operation ◽  
Technological Processes ◽  
Input And Output

System analysis is used as the effective way for design and modification of different kinds of technical systems. Application of system analysis to any technological process allows to present the links between input and output parameters which makes it possible to analyze its effectiveness and effect on the process for manufacturing of the object with necessary level of quality. The paper presents results of system analysis application for multioperational technological processes. The main aim of hot rolling process is manufacturing the hot rolled metal sheet with definite geometrical parameters which are necessary for further cold rolling process. The scheme of hot rolling operation with its input and output links is presented. The obtained results can be used for mathematical modeling of hot rolling operation. It is shown the application of system analysis for technological process of coating on the example of vacuum ion-plasma coating process. Because of existence of operated, noncontrolled, and indignant parameters of the coating process application of system analysis is the effective way for structural analysis of this technical system. It is proposed to supplement system analysis with function-oriented analysis. This approach can state the links between properties of the object which are sufficient for its application and technological parameters of the manufacturing technological process.

Design of Pipe Steel Hot Rolling Technological Process Based on System Analysis

2021 ◽  
Vol 316 ◽  
pp. 449-454
Author(s):  
Elena Shiriaeva ◽  
Marina Polyakova
Keyword(s):  
Technological Process ◽  
Hot Rolling ◽  
Steel Sheet ◽  
System Analysis ◽  
Pipe Steel ◽  
Rolling Process ◽  
Technological Operation ◽  
Hot Rolling Process ◽  
Wide Range ◽  
Material Energy

Pipe steel sheet is manufactured by hot rolling technological process. Technological regimes of every technological operation can vary in a wide range affecting pipe steel sheet properties. It is shown that system analysis provides the effective way for searching out the basics for mathematical modeling of multi-variant technological processes. The detailed scheme of steel sheet hot rolling process is presented, determining its input and output parameters. Flows of material, energy, and information are presented for each technological operation. Metallurgical concept of pipe steel manufacturing is shown as the basics for competitive product manufacturing. It is proposed to analyze the hot rolling process as a set of target functions, which will make it possible to achieve the pipe steel sheet with the desired level of mechanical properties. The proposed approach based on system analysis allows to find tendencies for further development of hot rolling.

scholarly journals Determination of system connections of hot rolled steel sheet manufacturing process

2019 ◽  
Vol 298 ◽  
pp. 00142
Author(s):  
Elena Shiriaeva ◽  
Marina Polyakova
Keyword(s):  
Technological Process ◽  
Hot Rolling ◽  
Steel Sheet ◽  
System Analysis ◽  
Rolling Process ◽  
Metal Sheet ◽  
Technical System ◽  
Analysis Application ◽  
Material Energy ◽  
Hot Rolled

System analysis is used to state links between input and output parameters of any technical system taking into consideration flows of material, energy, and information. This approach makes it possible to find effective ways for improvement of technical system parameters. The paper presents results of system analysis application for multioperational technological process steel sheet of hot rolling. Structural scheme of metal sheet hot rolling process is presented based on principles of system analysis. Hot rolling technological operations such as workpiece heating, hot rolling, cooling, and coiling are presented as subsystems. Due to the obtained schemes metal sheet parameters are stated which have to be controlled during each technological operation of hot rolling technological process. The obtained results can be used as the basics for mathematical modeling of steel sheet hot rolling operation in order to get the final product with the required set of properties.

System Analysis of the State of Automation of Technological Processes for Cleaning Used Oils

2018 ◽  
Vol 22 (5) ◽  
pp. 54-58
Author(s):  
O.M. Gorbacheva ◽  
A.S. Borovsky
Keyword(s):  
Technological Process ◽  
System Analysis ◽  
Technical System ◽  
Waste Oil ◽  
Technological Processes ◽  
Used Oil ◽  
Functional Models ◽  
Oil Purification ◽  
Technical Systems ◽  
Degree Of Purification

Based on the system analysis using IDF0 diagrams, functional models of existing technical systems for cleaning used oil have been constructed. The influence of the parameters of the technological process on the time of its flow and the degree of purification of the used oil are described. After studying the influence of the parameters of the technological process of cleaning used oil and analyzing the existing automated technical oil purification systems, the necessity of developing a new automated technical system for cleaning the waste oil is substantiated, in which the parameters of the process that have not been considered previously will be monitored.

Aluminum Hot Finishing Rolling Process Parameters on the Effect of Temperature Field Distribution

2011 ◽  
Vol 103 ◽  
pp. 442-446
Author(s):  
Zhuo Fu ◽  
Yi Lun Liu ◽  
Xue Liu
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Field Distribution ◽  
Process Parameters ◽  
Hot Rolling ◽  
Rolling Process ◽  
Effect Of Temperature ◽  
Technological Parameters ◽  
Temperature Field Distribution ◽  
Actual Structure

According to actual structure parameters and the technological parameters in an aluminum hot rolling production line, consider the rolling of metal plastic deformation heat, the contact surface heat conductivity, friction heat effect on the rolled piece and the roller heat transfer, use finite element analysis software MSC.Marc to build thermo-mechanical coupled finite element simulation model about aluminum hot rolling frame F2. Analyzing different rolling process parameters on the influence of the temperature field distribution regularity, and by adjusting the rolled-piece technology parameters to control temperature distribution, so as to achieve the purpose of improving product quality, and to provide theoretical basis for production of aluminum strip.

scholarly journals Study of rollers box passes influence on formation of thermocyclic fractures under conditions of 3270/150 wire rod hot mill of “Belorussky steel-works – managing company of “BMK” holding

2019 ◽  
Vol 75 (1) ◽  
pp. 80-85 ◽  
Author(s):  
A. V. Strel’chenko ◽  
I. A. Zuev ◽  
I. V. Astapenko
Keyword(s):  
Service Life ◽  
Contact Pressure ◽  
Technological Process ◽  
Thermal Stresses ◽  
Side Surface ◽  
Rolling Process ◽  
Surface Heating ◽  
Technological Parameters ◽  
Temperature Expansion ◽  
Simulation Results

Rollers with box passes are widely used in long products manufacturing, that can be explained by better gripping ability and a high drawing out coefficient. However, along with the stated advantages there are considerable drawbacks – formation of an erosion net at a pass bottom and side fractures at side outlets. Study of main technological parameters of rolling process influence on wear, its value and character of distribution along a pass perimeter. Possibilities shown to decrease or redistribute the wear aimed at an increase of rollers service life. Results of reasons study of thermocyclic fractures formation at side outlets of box passes presented. By application of simulation three digital experiments were made: a base one – according to parameters of existing technological process and two being proposed, in which a pass outlet geometry was varied, estimated its influence on the side surface heating, contact pressure and contact with strip. Based on the experiments simulation results analysis the following was determined: formation of side fractures takes place as a result of uneven temperature expansion of side surface and pass bottom; considerably longer contact of box pass outlets results in critical expanding thermal stresses at its surface. Besides, it was determined, that by a pass outlet geometry changing it is possible to control the dynamic of thermal expanding of a pass surface and considerably decrease it.

scholarly journals Model of simulation of the process of formation of functional surfaces of micro-opto-electro-mechanical systems’ components

2020 ◽  
pp. 73-82
Author(s):  
І.Ш. Невлюдов ◽  
О.О. Чала ◽  
О.І. Филипенко ◽  
І.В. Боцман
Keyword(s):  
Mathematical Model ◽  
Technological Process ◽  
Mechanical Systems ◽  
Experiment Planning ◽  
Practical Implementation ◽  
Technological Parameters ◽  
Forming Process ◽  
Technological Processes ◽  
Functional Surfaces ◽  
Functional Components

The subject of the article is to establish the relationships between the parameters of formation the functional surfaces of the substrates of micro-opto-electro-mechanical systems’ (MOEMS) components and their physical and technological parameters. Objectives: to increase the reliability and reproducibility of the received information, reduce the complexity of the technological process of forming, by modeling the dependences of the ratios of physical and technological parameters of forming the functional surfaces of the substrates of MOEMS components for the forming process. The methods are used: methods of experiment planning and computer processing of experimental data, mathematical models, digital computer modeling of technological processes. The following results were obtained: a mathematical model was proposed, which was used to model the influence of physical and technological parameters of the functional surfaces of the substrates of MOEMS components on their formation, with the receipt of prototypes. The results can be used in the development of technological processes of production, as substrates of functional components of MOEMS, and other functional elements for various technological purposes. A mathematical model is obtained, which allows predicting the degree of influence of physical and technological parameters of the technological process on the parameters of formation of functional surfaces of substrates of MOEMS components. Conclusions. The scientific novelty of the results is as follows: a mathematical model that has found practical implementation for computer digital modeling in the development of technological processes for the production of functional surfaces of substrates of MOEMS components is proposed, in which, unlike the existing ones, it is possible to predict the degree of influence of physical substrates of MOEMS components, which allows to plan the process of formation, increase the reproducibility of results and reduce the complexity of the technological process.

scholarly journals Design of production of the range of construction materials on the basis of methods of the system analysis

2018 ◽  
Vol 80 (2) ◽  
pp. 130-137
Author(s):  
D. N. Krivogina
Keyword(s):  
Real Estate ◽  
Technological Process ◽  
System Analysis ◽  
Construction Materials ◽  
Large Degree ◽  
Modern Approach ◽  
Technological Processes ◽  
Normative Requirements ◽  
Service Conditions ◽  
Functional Purpose

The analysis of the modern approach to the choice of technological processes of production of heavy concrete products and its weaknesses were shown. It is proved that the technological process as an object is a weekly structured system due to the large degree of uncertainty associated with the human factor. It is established that development of new assortment approach to the choice of technological process of the production of construction materials differing in alleged accounting of functional purpose and service conditions of building constructions in a real estate object can be one version of the solution of this problem. The concept of the choice of optimum technological processes of production of construction materials distinctive in alleged accounting of functional purpose and service conditions of building constructions of real estate objects is developed. The technologies of mathematical statement and the solution of problems of optimization of technological processes of production of the range of construction materials differing in increase in degree of structure of system liaisons with external subsystems on the basis of standard mechanisms of the subject focused accounting of functional purpose and service conditions of building constructions and also standard algorithms of search of optimal solutions for defined the range are developed. Assessment of efficiency of assortment approach to a problem of optimization of technological processes of production of the range of construction materials including comparison of the characteristics of material received as a result of use of modern approach, assortment approach in the set parameters of management and assortment approach with expansion of a set of essential alternatives of technological process of production of the range of construction materials is executed. This assessment has shown that more perspective alternatives on qualitative content of characteristics of material are outside area of normative requirements and need justification.

scholarly journals Creation of automated workplaces based on a formalized methodology for designing technological processes of machine-building enterprises

2020 ◽  
pp. 214-223
Author(s):  
Г.С. Жетесова ◽  
Т.Ю. Никонова ◽  
В.В. Юрченко ◽  
А.К. Матешов ◽  
Н.А. Савельева
Keyword(s):  
Technological Process ◽  
Machine Building ◽  
Practical Significance ◽  
Technological Parameters ◽  
Special Equipment ◽  
Technological Processes ◽  
Process Formation ◽  
Technical Specifications ◽  
Current Transition ◽  
Building Enterprises

В статье рассматривается проблема создания автоматизированных систем, удовлетворяющих требованиям современного производства (универсальность, многофункциональность и комплексность), прежде всего, должны быть созданы специальные методология и теория, раскрывающие процессы проектирования, представляемые в математическом, формализованном и программном виде. Авторами предлагается формализация процесса проектирования и технологии, на основе которой создана система автоматизации проектирования, что позволит проектировать технологические процессы (ТП) для разнообразных изделий, в том числе ранее не производившихся. Разработка математических моделей ТП механической обработки деталей обеспечит объективное принятие технологических решений и будет отражать динамику качественного и количественного преобразования заготовок в процессе производства. Практической значимостью работы является создание и апробация ПО «Система автоматизированных рабочих мест машиностроительных предприятий», в которой разработаны АРМ технологических служб и подразделений, а именно АРМ отдела технолога. Для реализации цели, разработанный АРМ обеспечивает выполнение двух основных направлений деятельности. Во-первых, обеспечивает возможность разработки и внедрения ТП, средств автоматизации и механизации, оптимизации режимов работы универсального оборудования, и оборудования с числовым программным управлением. Во-вторых, реализует своевременную разработку технических заданий для обеспечения структурных подразделений (цехов, участков) специальной оснасткой, инструментом и приспособлениями, предусмотренными технологией, нестандартным оборудованием средствами автоматизации и механизации. В результате проведенных исследований, получены: 1. Методика проектирования основных этапов ТП изготовления деталей, основанная на объективных критериях выбора технологических параметров, что обеспечит исключение ошибок на начальном этапе. Разработан общий алгоритм решения технологической задачи. 2. Методика назначения переходов и составления планов обработки, в основу которой положен принцип выполнимости определенным методом текущего перехода, а именно, выполнение характеристик. 3. Методика оснащения ТП позволяет учитывать геометрические и точностные параметры, дополнительные требования к поверхности на конкретных стадиях с учетом текущей производственной ситуации. The problem of development special software for the automation for design of technological processes that meets the requirements of modern production – universality, multifunctionality and complexity are considered. The authors propose – CAD is developed, which will make it possible to design technological processes for a wide variety of products, including new ones that have not previously entered production. The practical significance of the work is the creation and testing of the software «System of automated workstations of machine-building enterprises», in AWP of the technologist's department, were developed. The first direction provides the possibility of developing and implementing processes. The second the timely development of technical specifications for the provision of structural units (workshops and sections) with special equipment, tools and devices provided for by technology. As a result of the research, the methods of designing technological processes for machining parts were obtained: 1. Methodology for designing the main stages based on objective criteria for the selection of technological parameters, which ensures the elimination of errors at the initial stage of the technological process formation 2. The method of assigning transitions and drawing up processing plans, based on the principle of the feasibility of the current transition by a certain method, namely, the fulfillment of the characteristics that need to be obtained at the current transition. 3. The technique of equipping the technological process allows taking into account the geometric and precision parameters, additional requirements for the surface at specific stages based on the current production situation.

scholarly journals Study of rollers thermal state at hot rolling of long products profiles at 370/150 mill of OJSC “Belorussky steel-works – UKKh “Belorusskaya metallurgical company”

2019 ◽  
Vol 75 (8) ◽  
pp. 962-970
Author(s):  
A. V. Strel’chenko ◽  
I. V. Astapenko
Keyword(s):  
Hot Rolling ◽  
Thermal State ◽  
Rolling Process ◽  
Technological Parameters ◽  
Surface Layers ◽  
Cooling Mode ◽  
Continuous Section ◽  
Cyclic Stresses ◽  
Subsurface Layers ◽  
Steel Works

In the rolling production, rolls with box passes are widely used, which is explained by the best gripping ability and high draw ratio. However, along with these advantages, there are significant drawbacks - the formation of an erosion net along the bottom of the pass and side cracks on the side outlets, since hot rolling of metals and alloys is accompanied by intense wear of the working rollers and welding fixtures, which happens due to exposure to high temperatures and stresses. Therefore, the task of elaboration of rational temperature regime to provide not only stable mill operation, but also high rollers endurance, is rather actual and requires its solution. It is very important to follow the today’s trend to increase continuous mills rolling speed, which will result in still heavier temperature conditions of rollers operation. Results of the study of the rolling process main technological parameters influence on the formation of erosion net across the bottom of the pass presented, as well as magnitude and nature of the distribution of thermal cyclic stresses along the surface layers of the bottom of pass. Study of the thermal state of roughing stands rollers of OJSC “Belorussky steel-works” 370/150 continuous wire-rod mill show, that comparing with intermediate and finished stands rollers they subject more to thermo-cyclic destruction of passes surface, but not to mechanical one. As a result of the computer simulation new data obtained on the character and peculiarities of dynamics of surface thermal state of rollers passes. The possibilities to reduce thermal cyclic stresses by improving the cooling regime of the rolls shown. Using the simulation by the finite elements method, the study of the dynamics of heating and stress state of the surface and subsurface layers of the pass bottom was accomplished. Based on the analysis results of numerical experiments and analytical calculations, isotherms of the surface layers of the bottom of the pass were compiled to select the optimal cooling mode. The data obtained can be used to control the cooling systems of roughing stands rollers of continuous section and pipe hot rolling mills.

scholarly journals Development of an automated control system for the reactor of motor oil production

2019 ◽  
Vol 80 (4) ◽  
pp. 90-95
Author(s):  
A. A. Kuzichkin ◽  
Yu. O. Saveleva ◽  
L. S. Kuzovenkov
Keyword(s):  
Control System ◽  
Embedded System ◽  
Technological Process ◽  
System Analysis ◽  
Motor Oil ◽  
Technological Parameters ◽  
Preparation Time ◽  
Automated Control ◽  
Base Oil ◽  
Automated Control System

Background: Compliance to modern requirements to quality of motor oil to depends largely on level of automation of industrial process of their preparation. Existing and really functioning refinery processing units provide constancy of the target numerical index of the viscosity of oil only when the mix formulation of production is strictly observed. In mix formulation, the flow parameters of the base oil and additives are determined, the temperature in the reactor and the preparation time also exerts impact the technological process. Refinery processing units of production of motor oil of the type in question don't provide possible changes of flowrate of components in the reactor, which leads to a viscosity factor deviation from the desired one. Stringent control of technological process of production of motor oil provides: high stability of a product, good torque properties at low temperatures, necessary viscosity within working temperatures. Materials and methods: The system analysis of the technological process is carried out on the basis of the experimental data of operation of the unit for obtaining motor oil. The optimal control system is developed on the basis of the mathematical model of the research object in the software package of the SCADA-system Trace Mode. Results: Automated control system for the production of motor oil is developed based on Trace Mode which includes: a screen for setting technological parameters, a mnemonic diagram of the process, a control program. The realized program exercises control of process of giving in the reactor of base oil and additives, alarm on flow rate, control of the temperature of the mixture of base oil and additives in the reactor, carries out turning on of the engine of the mixing device, and also realizes the timer of preparation time of oil. Conclusions: Employment of the motor oil received by means of the embedded system will help to avoid: impurities of engines, corrosive wear when using high-sulphur fuel, breakdown.

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