Abstract
Аt present, there is a steady tendency to increase volume of i dustrial and civil construction in Russia and abroad. This in turn makes it necessary to enhance production of structural sections and in particular – reinforcing bar. One of the promising ways to increase production of reinforcing bar at existing rolling mills is development of rollingseparation technology. This technology provides growth in productivity of existing small-grade mills and reduces energy costs without large capital expenditures. However, despite its apparent simplicity, introduction of rolling-separation technology at existing enterprises causes difficulties associated with insufficient coverage of this experience in literature. The article presents experience of introduction of the rolling-separation technology on operating continuous small-grade mill. The research was carried out on equipment available in the workshop and used to monitor load of the main engines. Features of energy costs distribution on stands were studied at classical rolling and with the use of technology of rolling-separation of reinforcing bar No. 10, No. 14 made of 35GS and 3PS steel. Experimental graphs of the main engines of the rolling mill load show redistribution of energy consumption in stands for roughing, intermediate and finishing groups when using rolling-separation technology. Data on application of the main engine power and distribution of the specific load on the stands in classical rolling method and using rolling-separation technology are presented in graphic form. Analysis of the received data allowed us to reveal features of energy consumption at development of rolling-separation technology during operation. It is shown that use of this technology leads to additional load on stands of finishing groups. Energy savings during introduction of rolling-separation technology were quantified, and it was found that with a decrease of the rebar number, efficiency increases. Reduction of energy consumption during development of this technology in current production is associated with a decrease in machine time.
Highlights
Data on application of the main engine power and distribution of the specific load on the stands in classical rolling method and using rolling-separation technology are presented in graphic form
Reduction of energy consumption during development of this technology in current production is associated with a decrease in machine time
Совершенствование технологии производства арматурных профилей на непрерывных мелкосортных станах // Изв
Summary
Никитин А.Г.1, д.т.н., профессор кафедры «Механика и машиностроение» Беляев С.В.2, д.т.н., профессор, заведующий кафедрой «Литейное производство». Одним из перспективных путей увеличения производства арматуры на действующих прокатных станах является освоение технологии прокаткиразделения. Изучены особенности распределения энергозатрат по клетям при классической прокатке и с использованием технологии прокатки-разделения арматуры No 10, No 14 из стали марок 35ГС и 3ПС. На экспериментальных графиках загрузки главных двигателей прокатного стана показано перераспределение энергозатрат по клетям черновой, промежуточной и чистовой групп при использовании технологии прокатки-разделения. Уменьшение энергозатрат при освоении технологии прокатки-разделения на действующем производстве связано с уменьшением машинного времени. Одним из перспективных путей повышения производительности мелкосортных станов является освоение технологии прокатки-разделения, которая в последнее время активно внедряется на действующих прокатных станах [7 – 16]. Однако при кажущейся простоте этот процесс растягивается на большой период, что связано с недостаточной его изученностью и малым объемом информации об опыте внедрения рассматриваемой технологии на действующем производстве в технической литературе
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