Inner-source driven comprehensive shape and thickness regulation mill

Abstract

The invention discloses an inner-source driven comprehensive shape and thickness regulation mill, which comprises a frame, a roll system with electric heating expansion rods, a sliding ring, a temperature measuring sensor and an electric heating signal output feedback control system. The roll system provided with electric heating expansion rod regulation roll profiles is assembled in a mill frame according to the type of the mill, and rolling reduction is adjusted by a hydraulic cylinder. Roll profile curves capable of realizing various-order compound wave shape control can be constructed by means of regulating temperature control of the electric heating expansion rods with the roll profiles. By the aid of the inner-source driven comprehensive shape and thickness regulation mill, high-order roll profile curves for optionally controlling complicated wave shapes can be constructed, and shape control modes of a two-roll mill, a common four-roll mill and a multi-roll mill can be simplified. The inner-source driven comprehensive shape and thickness regulation mill similarly has the regulation effects of traversing, bending and sectioned water spray cooling of a traditional roll, the structure of a shape regulation mechanism of the mill is greatly simplified, the wave shapes with biquadratic curves can be adjusted, and various high-order wave shapes and local wave shapes can be effectively controlled, so that shape regulation capacity is enhanced. The inner-source driven comprehensive shape and thickness regulation mill is not only applicable to cold rolling of strips, but also applicable to hot rolling of the strips.

Description

technical field [0001] The invention relates to the technical field of plate and strip rolling mills, in particular to an endogenously driven rolling mill for comprehensive control of plate shape and thickness. Background technique [0002] In the industrial production of plate and strip, rolls are installed as tools for plate and strip processing in two-high mills, four-high mills, six-high HC (High Crown, high-performance roll crown) mills, HCW (work roll mobile HC ) rolling mills and multi-roll mills. In order to make the rolling mill have the shape adjustment function, various roll shape adjustment methods such as hydraulic roll bending, string roll, water spray, CVC (Continuous Variable Crown, continuous variable crown) roll shape are usually used to change the shape of the bearing roll gap, To achieve the purpose of plate shape control. In addition, the United States, Britain, Japan, etc. have also successively proposed the concept of placing electric heaters as heat...

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Problems solved by technology

[0003] However, when the inventors carried out the present invention, they found that both of the above-mentioned methods have the following defects: due to the fact that the different heating areas of the inner hole cannot conduct heat in the radial direction, the radial temperature of each section of the roller body is homogenized along the axial direction, and each section The temperature coupling relationship between them is difficult to solve, there is no temperature sensor at the heat source, and quantitative temperature adjustment cannot be performed

Without the internal driving force formed by the high-speed thermal deformation of the electric thermal expansion rod, it is difficult to realize the rapid response of the roll shape adjustment

The rolling mill thus assembled cannot realize the high-speed online control of the out-of-tolerance defects of the plate shape and the plate crown

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