Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)最新文献

{"title":"Status, problems and development prospects of JSC “Uzmetkombinat”","authors":"A. I. Sultanov","doi":"10.21122/1683-6065-2023-1-79-84","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-79-84","url":null,"abstract":"JSC “Uzmetkombinat” is one of the largest metallurgical enterprises of the Republic of Uzbekistan. Along with the main products – long products from ferrous and non‑ferrous metals of various assortments, steel grinding balls, ferroalloys, the plant also produces heat‑insulating materials, consumer goods and other products. JSC “Uzmetkombinat” is a developing enterprise – year after year it increases its production capacity, opens new production facilities and increases the range of products. This article provides information about the plant, the range of products, production indicators for previous years and targets until 2026, as well as ways to achieve them.","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115972109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trends in the development of foundry production","authors":"E. I. Marukovich, M. A. Sadokha","doi":"10.21122/1683-6065-2023-1-26-31","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-26-31","url":null,"abstract":"An analysis of the state of foundry production in the world is presented, as well as an analysis of the state of foundry production in the Republic of Belarus. The dynamics of changes in production capacities, the degree of loading and the volume of production of castings for various types of alloys is shown. It is established that the structure of cast products produced both in the world and in the Republic of Belarus is in constant dynamics and there is a constant change in the ratio of production volumes from various alloys. The development of the foundry production of the Republic of Belarus as a whole is similar to the world foundry production, however, there is a certain time lag and certain differences in the ratio for different types of casting.","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122419710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of working conditions by dust factor in foundries with different production patterns","authors":"A. М. Lazarenkov, M. A. Sadokha, T. P. Kot, A. A. Novik","doi":"10.21122/1683-6065-2023-1-135-137","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-135-137","url":null,"abstract":"The results of the dust content study at workplaces of foundry parts with different production patterns are considered. It is noted that the dust content in the foundry sections working area air exceeds the maximum permissible concentrations at all workplaces, while the greatest exceedances are noted in mass production workshops. The greatest impact of dust is exposed to the cutters, cleaners and casting technicians.","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122368970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Priority areas of professional development and retraining of specialists in the direction","authors":"T. V. Ryzhova, I. N. Ushakova","doi":"10.21122/1683-6065-2023-1-143-145","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-143-145","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129043185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Technological aspects of processing steel products in powder mixtures containing hot‑dip galvanizing waste","authors":"V. Dashkevich, P. S. Myshkevich, N. M. Barankevich","doi":"10.21122/1683-6065-2023-1-124-127","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-124-127","url":null,"abstract":"The paper considers the technological features of thermodiffusion galvanizing of fasteners in a powder mixture containing the main waste of hot galvanizing it is gartzink. The advantages of preliminary fluxing over thermal diffusion zinc plating are noted. The microstructure of the obtained diffusion layers on steel 40Х was studied, the features of the saturation kinetics and the quality of the resulting layers were noted.","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121226346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"74th World Foundry Congress","authors":"Yu. A. Nikolaichik","doi":"10.21122/1683-6065-2023-1-19-25","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-19-25","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114515719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research of the liquid‑glass HTS compositions with sand of the Novinsky deposit. Message 1.","authors":"S. Tkachenko, A. V. Sokolov, M. A. Druzhevsky, O. V. Mikhailov","doi":"10.21122/1683-6065-2023-1-35-40","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-35-40","url":null,"abstract":"The article is devoted to the selection of optimal parameters of a chemically hardening mixture based on quartz sand with a liquid‑glass binder cured with liquid esters for the production of castings of heavy machinery, machine tools and shut‑off valves. The analysis of the quality of molding sands of three brands, of different origin, was carried out. The strength characteristics of mixtures of various compositions are studied. Based on the data obtained, conclusions are drawn about the optimal characteristics of sand and the amount of binder additive. The compositions of easily knocked‑out environmentally friendly liquid‑glass mixtures cured with esters for the manufacture of molds and rods in machine‑tool armature construction are recommended.","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125942875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the solubility of gases in liquid casting alloys","authors":"E. I. Marukovich, V. Stetsenko, A. Stetsenko","doi":"10.21122/1683-6065-2023-1-32-34","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-32-34","url":null,"abstract":"It has been shown that hydrogen and oxygen atoms cannot be present in the open pores of crystal lattices of base metals of casting alloys. The solubility of gases in liquid casting alloys is a nanostructured process. Hydrogen and oxygen atoms in melts are adsorbed by basic metal elemental nanocrystals. Nitrogen dissolves in liquid iron, nickel and chromium not in atomic form, but in the composition of elementary nanocrystals and nitride molecules. After deoxidation of molten casting alloys, the main gas dissolved in them is hydrogen.","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121133067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Obtaining mechanically fused modifying ligatures with a high content of alloying component for the production of chrome bronzes","authors":"F. G. Lovshenko, I. A. Lozikov","doi":"10.21122/1683-6065-2023-1-96-103","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-96-103","url":null,"abstract":"The paper presents the results of a study of the regularities of the formation of granulometric composition, structure and properties of modifying ligatures with a high content of alloying component for the production of chrome bronzes. The kinetics of changes in the physico‑mechanical properties of granular compositions depending on the temperature in the grinding chamber and the ratio of the volume of working bodies to the volume of the charge has been studied. The results of the topography of granules and their structure are presented, showing that the granules obtained according to the optimal mode of mechanical fusion are dense bodies with microinclusions of chromium, the maximum size of which does not exceed 15–20 microns.Based on the results of thermodynamic modeling, thermodynamically justified refractory compounds synthesized in the process of obtaining a ligature have been established, which should effectively perform the role of modifiers of the first kind, ensuring the production of bronzes with a sub‑/microcrystalline type of base structure.The processes of compacting mechanically fused compositions were optimized and the influence of the main technological factors – the heating temperature of cold‑pressed briquettes and the extraction coefficient during hot pressing on the physical and mechanical properties of compact materials was investigated. The results of studying the structure and properties of the most promising Cu – 20 %Cr composition are presented, which make it possible to identify its microcrystalline type, which persists after prolonged high‑temperature exposure during the processing of the granular composition into a semi‑finished product, and to conclude about the dispersed nature of its hardening, which additionally confi ms the data of thermodynamic modeling on the possibility of mechanical synthesis of nanocrystals of refractory compounds to perform the role of modifiers.According to the results of the research, a comparative analysis of the properties of the developed ligature and beryllium bronze was performed, establishing the possibility of its use as an independent material for electrical purposes.","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126679822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of gases on casting expansion processes during their hardening","authors":"E. I. Marukovich, V. Stetsenko, A. Stetsenko","doi":"10.21122/1683-6065-2023-1-47-50","DOIUrl":"https://doi.org/10.21122/1683-6065-2023-1-47-50","url":null,"abstract":"It has been experimentally shown that directional solidification of water and bismuth in glass and quartz cylindrical forms does not result in expansion of the castings perpendicular to the solidification direction. Therefore, such forms are not destroyed. This is due to the unobstructed release of gases during directional solidification of water and bismuth. Gases have a great influence on the expansion processes of castings when they solidify.","PeriodicalId":278844,"journal":{"name":"Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127547860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}