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What is the 'free rolling' technology for packaging steel strip?
by：Hongmei
2021-03-15
What is the 'free rolling' technology for packaging steel strip?
Answer: 'Free rolling' is a new technology developed on the finishing mill in order to increase the ratio of hot delivery, hot charging and direct rolling. In order to solve the contradiction between the width of continuous casting and the width of the finished product, three methods are mainly used to form a whole in the modern production process. The three methods are: continuous slab width adjustment technology, rough rolling unit VSB or E1 vertical roll The large side pressure technology and the 'free rolling' technology of the finishing mill.
The main content of 'free rolling' is to break the law of the conventional rolling unit of the finishing mill, that is, the law of the strip width from narrow to wide to narrow, and the thickness from thick to thin to thick, changing the width The upper can be rolled irregularly, that is, from wide to narrow, and from narrow to wide, and the thickness transition is not strict, thereby relaxing the limitation of the change of plate width and plate thickness and the limitation of continuous rolling of the same width. The difference between conventional rolling and 'free rolling' is shown in Table 1-5.
Answer: 'Free rolling' is a new technology developed on the finishing mill in order to increase the ratio of hot delivery, hot charging and direct rolling. In order to solve the contradiction between the width of continuous casting and the width of the finished product, three methods are mainly used to form a whole in the modern production process. The three methods are: continuous slab width adjustment technology, rough rolling unit VSB or E1 vertical roll The large side pressure technology and the 'free rolling' technology of the finishing mill.
The main content of 'free rolling' is to break the law of the conventional rolling unit of the finishing mill, that is, the law of the strip width from narrow to wide to narrow, and the thickness from thick to thin to thick, changing the width The upper can be rolled irregularly, that is, from wide to narrow, and from narrow to wide, and the thickness transition is not strict, thereby relaxing the limitation of the change of plate width and plate thickness and the limitation of continuous rolling of the same width. The difference between conventional rolling and 'free rolling' is shown in Table 1-5.
