Roller with flexibly adjustable roller type curves

Abstract

The invention discloses a roller with flexibly adjustable roller type curves. A plurality of groups of electric heating temperature control expansion rods are mounted inside a through hole of a roller body by means of stationary fit, and the electric heating temperature control expansion rods generate radial expansion deformation and form internal expansion driving force by directly using inductance heat (or resistance heat), so that the roller body is driven to radially deform. A heat-insulation distance ring is mounted between each two electric heating temperature control expansion rods, so that heat flow is directionally and radially conducted, and the expansion rods drive the roller body to radially deform. When different current is supplied to the groups of electric heating temperature control expansion rods respectively, a roller profile can be segmentally adjusted. Therefore, various continuously variable high-level roller type curves can be generated to flexibly adjust strip shapes. The roller has the effects of compensating roller wear and eliminating local high shape waves.

Description

technical field [0001] The invention relates to the technical field of strip rolling mills, in particular to a roll that can flexibly adjust the roll profile curve. Background technique [0002] In the industrial production of plate and strip, rolls are installed in two-roll mills, four-roll mills, six-high HC (High Crown, high-performance roll crown) mills and multi-roll mills as tools for plate and strip processing. In order to make the rolling mill have the shape adjustment function, various roll shape adjustment methods such as hydraulic roll bending, stringing rolls, water spray, CVC (Continuous Variable Crown, continuously 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 sources in the through-holes of the rolls for segmental and local heating to adjus...

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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

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