Effect of the thermal cycle of welding on impact toughness components of different zones of welded joints in 10G2SB and 10G2SFB steels

Analysis of the existing trends in development of technologies for production of welding and surfacing fluxes showed that one of the actively developing areas is the production of fluxes using man-made waste (including metallurgical one) as components of the initial charge. This is due to the fact that the slag waste of metallurgical production contains a large amount of manganese and silicon, which in turn are the basis in welding fluxes. Within the framework of this direction development, the article describes principal possibility and efficiency of using materials based on ladle electric steelmaking slag from JSC “EVRAZ United West Siberian Metallurgical Combine” and slag produced by silicomanganese from LLC “West Siberian Electrometallurgical Plant” in the charge for production of fluxes used in the surfacing of rolling rolls. All the laboratory tests were made using the equipment of the scientific and production center “Welding Processes and Technologies”. For surfacing steel samples, the authors used a flux additive obtained by mixing ladle electric steelmaking slag of a fraction less than 0.2 mm with liquid sodium glass in a ratio of 62 and 38 %. The resulting flux additive was mixed with slag from the production of silicomanganese of a fraction of 0.45 - 2.50 mm in various ratios. Studies of the chemical composition (by the spectral method) and metallographic studies of the deposited layer revealed a tendency to an increase in sulfur content and in contamination with non-metallic inclusions in it with an increase in content of the flux additive in the charge of more than 20 %. According to the results of visual quality control of the deposited layer macrostructure, the absence of defects was established with a flux additive content of up to 30 %.

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On possibility of using silicomanganese slag and ladle electric steelmaking slag in manufacture of welding fluxes

Козырев

Михно

Усольцев

et al. 2021

Izv. vysš. učebn. zaved., Čern. metall.

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The Possibility of Using Silicomanganese Slag and Ladle Electric Steelmaking Slag in Manufacture of Welding Fluxes

et al. 2021

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Аннотация. Анализ существующих тенденций развития технологий производства сварочных и наплавочных флюсов показал, что одним из активно развиваемых направлений является производство флюсов с использованием техногенных отходов (в том числе металлургичес ких) в качестве компонентов исходной шихты. Это связанно с тем, что в шлаковых отходах металлургического производства содержится большое количество марганца и кремния, которые в свою очередь являются основой в сварочных флюсах. При проведении лабораторных исследований с использованием оборудования научнопроизводственного цент ра «Сварочные процессы и технологии» по наплавке стальных образцов использовали флюсдобавку, полученную путем смешивания ковшевого электросталеплавильного шлака фракции менее 0,2 мм с жидким натриевым стеклом в количестве 62 и 38 %. Полученную флюсдобавку смешивали со шлаком производства силикомарганца фракции 0,45 -2,50 мм в различных соотношениях. Исследования химического состава наплавленного слоя металла, проведенные спектральным методом, и металлографические исследования наплавленного слоя позволили выявить тенденцию к увеличению содержания серы и повышение загрязненности неметаллическими включениями в наплавленном слое при увеличении количества флюсдобавки в шихте более 20 %. По результатам визуального контроля качества макро структуры наплавленного слоя установлено отсутствие дефектов при содержании флюсдобавки до 30 %.

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Effect of the thermal cycle of welding on impact toughness components of different zones of welded joints in 10G2SB and 10G2SFB steels

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On possibility of using silicomanganese slag and ladle electric steelmaking slag in manufacture of welding fluxes

On possibility of using silicomanganese slag and ladle electric steelmaking slag in manufacture of welding fluxes

The Possibility of Using Silicomanganese Slag and Ladle Electric Steelmaking Slag in Manufacture of Welding Fluxes

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