Toirov O.Z., Sharopov U.B., Karimov M.
ELEMENTAL ANALYSIS OF THE COMPOSITION OF COPPER CONDUCTORS PRODUCED IN THE CABLE INDUSTRY *
Аннотация:
in this article, the cable manufacturing system remains one of the important factors in the development of our industry and it should be noted that it is difficult to imagine our life without cable and wire communications. Research and development of methods for the analysis of the element composition of copper wire obtained at cable industry, ensuring the rapid, high-quality and reliable operation of the power system with cables and wires will solve many economic and social problems. Cables and wires are a common element in the transit of basic electrical energy for almost all power grids. Their main task is to provide quality electricity
Ключевые слова:
cable industry, copper wire, element, composition, analysis, methods, research, development, copper step, electrical engineering
УДК 621.45.034
Toirov O.Z.
Doctor of Technical Sciences, Professor, Head of Department
"Electrical Machines" Tashkent State Technical University
(Uzbekistan, Tashkent)
Sharopov U.B.
Candidate of Technical Sciences, Senior Researcher
Physical-Technical Institute of the
Academy of Sciences of the Republic of Uzbekistan
(Uzbekistan, Tashkent)
Karimov M.
Master Student of the Department "Electrical Machines"
Tashkent State Technical University
(Uzbekistan, Tashkent)
ELEMENTAL ANALYSIS OF THE COMPOSITION
OF COPPER CONDUCTORS PRODUCED
IN THE CABLE INDUSTRY
Abstract: in this article, the cable manufacturing system remains one of the important factors in the development of our industry and it should be noted that it is difficult to imagine our life without cable and wire communications. Research and development of methods for the analysis of the element composition of copper wire obtained at cable industry, ensuring the rapid, high-quality and reliable operation of the power system with cables and wires will solve many economic and social problems. Cables and wires are a common element in the transit of basic electrical energy for almost all power grids. Their main task is to provide quality electricity.
Keywords: cable industry, copper wire, element, composition, analysis, methods, research, development, copper step, electrical engineering.
Introduction. The modern stage of development of the metallurgical industry is characterized by the combination of various changes in the production process to produce a wide range of products. The most common are combined methods of continuous casting and rolling in the production of oxygenated copper rod, providing the highest performance. The resulting rod can be used to produce a variety of electrical products.
At present, the level of development of scientific, technical and industrial potential of the country allows to increase production capacity to provide high quality products of various sectors of the economy. According to the program of the Government of the Republic of Uzbekistan, the most promising areas for the development of the domestic market are the metallurgical and electrical industries [1-5]. To meet the growing demands of consumers and increase the competitiveness of electrical products, it is necessary to improve its quality. Due to the very wide range of electrical products, the production of large quantities of copper rope is required.
Due to the continuity of the technological process, it is not possible to study the individual stages of copper leaching, and complex studies often provide an approximate picture of the processes that take place [4-7]. Research into determining the causes of defects in copper rope is of great interest. The presence of defects in the rope can lead to wire breakage with fine scratching.
The study of rope related to the formation of defects in copper cataclysms involves the complexity of interfering with a continuous technological process and the difficulties associated with the combined method of roll.
The quality of the casting is of great importance. In this regard, the identification of the causes of defects in continuous processing and the specific characteristics of their behavior in plastic processing is an important and topical task.
Problem Statement. "Theoretical and experimental study of the mechanism of physical action on the crystallization solution and protective coatings of alloys based on metals of 4 periods with special properties";
- "Complex processing technology for the production of copper-containing raw materials and high quality copper products."
In recent years, production line placement has become more compact compared to traditional ingot production technology due to their high performance, low energy costs and rolling them due to continuous injection and circular combined methods. However, sufficient information about the effect of technological parameters of the preparation of the melt used for continuous casting of copper and the quality of the molded work piece and the resulting copper rod is not a continuous two - point crystallizer.
Results. Determining the causes of defects in casting blanks of copper grade, obtained by continuous injection into the tape crystallizer and studying the behavior of tissue defects during plastic processing, helps to prevent cracks in the copper rod after twisting test, then improve the technological regulation of permanent copper rope to improve the quality of the rod.
As a result, these defects affect semi-finished products for large lengths, but because of the small thickness can be detected with great difficulty. However, they have a negative effect on metal strength, tension, plasticity.
The work considers the detection of defects during laboratory evaluation of the quality of copper rope. Copper cylinder turning tests were originally developed by rope manufacturers to evaluate roll mill settings. However, they are now widely used by manufacturers and consumers as an indicator of surface defects such as captives, folded oxides, and caliber rashes. Often they are used as a prediction of the next ability to draw a wire. In a very common test for an 8 mm turn, the roll is turned in one direction for 10 revolutions and the next 10 revolutions are in the opposite direction. The large diameter rope is wrapped with fewer turns to hold the same load on the outer fibers of the roll. The classification system commonly used for bent cages is usually based on the size of the surface imperfections when viewed with a 10-fold increase. Such a classification system includes the depth and length of cracks. After turning, internal defects and cracks are usually not visible by accident. They tend to be grouped close to places weakened by stress centers as a result of cast needle defects or defects formed during rolling. For example, oxides and cracks after bending often belong to the two upper corners of the casting part. The frequency of defect formation is also high when these angles are machined with a scalping or milling process designed to remove unwanted creases, sunscreens and scale. Additional cracks,
The fact that the addition of oxides is often not present near floods helps to identify this problem. Many cracks, voids, and oxides are centered closer to the top surface of the casting and can be caused by uneven heat dissipation during crystallization, improper use of the antiadgesion coating on the casting wheel, or moisture in the antiadgesion composition of the spill form. Vapor-associated pores formed by gas bubbles are highly oxidized and do not show the correct ligament of copper-copper due to underground oxide films, although they close during hot rolling.
The surface oxide on the rope surface cannot be removed by final explanation in alcohol or acid. The lowest level of bending tests is not related to the maximum total value of the thickness of the oxide particle layer on the surface or to the surface layer of the rod. Presumably, the presence of deep cracks on the surface of the rod after the deflection test is due to the presence of large oxide inclusions. However, no significant amount of oxides has been identified to initiate crack formation.
Conclusion. Thus, the analysis of the results of many studies and experimental data on the relationship between casting defects such as copper structure and ingot porosity does not allow to fully revealing the mechanism of its impact on the quality of semi-finished products obtained from plastic deformations. The literary analysis carried out allowed forming the purposes and tasks of the dissertation work.
Based on the results, JSC Uzkabel proposed a customized regulation for permanent copper injection into the tested tape crystallizer. Excluding the factors that contribute to the gas saturation of the solution, the quality of continuous processing has been improved by reducing the number of gas defects and reducing their average volume.
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Номер журнала Вестник науки №6 (51) том 1
Ссылка для цитирования:
Toirov O.Z., Sharopov U.B., Karimov M. ELEMENTAL ANALYSIS OF THE COMPOSITION OF COPPER CONDUCTORS PRODUCED IN THE CABLE INDUSTRY // Вестник науки №6 (51) том 1. С. 340 - 345. 2022 г. ISSN 2712-8849 // Электронный ресурс: https://www.вестник-науки.рф/article/5802 (дата обращения: 25.04.2024 г.)
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