Вплив технологічних параметрів процесу холодної штабової прокатки на продуктивність двохклітьових реверсивних станів

• Datum: 2023
• Hauptverfasser: Василев, Я.Д., Замогильний, Р.О., Гринкевич, В.О.
• Format: Artikel
• Sprache: Ukrainisch
• Veröffentlicht: Physico-technological Institute of Metals and Alloys 2023
• Schlagworte: холодна прокатка; двохклітьовий реверсивний стан; технологія; продуктивність; параметр; швидкість; маса
• Online Zugang: https://www.metalsandcasting.com/index.php/mcu/article/view/145
• Назва журналу: Metal and Casting of Ukraine

The influence of technological parameters in the production of cold-rolled steel of the main assortment on the average hourly productivity on two-stand reversing mills is investigated. It was established that when rolling tinplate and thin strips of 0.161.0 mm thick with a conditional width of 1000 mm at a speed of 10–30 m/s from rolls of a 15–35 ton bale, the average hourly productivity of these mills varies in the range from 30 to 215 tons . It is shown that during rolling of tinplate and strips of small thickness from coils of constant weight, the main influence on the level of average hourly productivity is rendered by the speed of rolling, and this effect increases with decreasing strip thickness. Increasing the mass of coils, especially when rolling tinplate and thin strips, is not one of the factors that have a decisive influence on the average hourly productivity. Since the most intensive growth of the average hourly productivity of two-stand reversible mills in the production of rolled products of their main assortment is observed in the range of rolling speeds of 20–25 m/s, the maximum design speed of 22.5 m/s of these mills is reasonable and expedient. In the production of tinplate and thin strips, the mass of coils at the level of 25–28 tons provides an acceptably high level of average hourly productivity when the process is conducted at a speed of up to 20–25 m/s and can be considered necessary and sufficient. Increasing the mass of coils to 30–36 tons seems reasonable when designing two-section reversing mills for the production of products of various sizes up to 0.9–1 million tons per year. The method for calculating the average hourly productivity on two-stand reversing mills and the materials obtained with it can be used to justify the assortment and determine the parameters of the technology and the main equipment of the two-stand cold rolling mills 1400 and 1750, the construction of which is important for Ukraine.