Cold-rolling strip mill

Abstract

The invention discloses a cold-rolling strip mill which comprises a rack (1), and an upper back-up roll (3), an upper working roll (5), a lower working roll (18) and a lower back-up roll (16) are sequentially arranged in the rack (1) from top to bottom. The two ends of the upper working roll (5) and the two ends of the lower working roll (18) are provided with upper working roll bearing seats (6) and lower working roll bearing seats (17) respectively, and a bending roll block seat (8) can push the upper working roll bearing seats (6) and the lower working roll bearing seats (17) to move in the horizontal direction vertical to the axis of the upper working roll (17). A horizontal moving cylinder (11) driving the bending roll block seat (8) to move is fixedly connected to the rack (1). The cold-rolling strip mill can horizontally move the upper working roll and the lower working roll in the horizontal direction according to rolling parameters and structure parameters of the strip mill, and therefore the working rollers are stressed to the minimum in the horizontal direction under the condition that the working rollers stably perform rolling.

Description

technical field [0001] The invention relates to the field of metal strip rolling equipment, in particular to a cold strip rolling mill for rolling steel strips, nonferrous metals and alloy strips. Background technique [0002] In the field of cold-rolled steel strip, cold-rolled non-ferrous metal and alloy strip, four-high and six-high rolling mills are widely used to roll wide strips with a width greater than 1000mm. This rolling mill has a complete thickness control and shape control system and corresponding Mechanical structure. However, the existing four-high and six-high rolling mills have large diameters of work rolls due to structural limitations, making it difficult to roll thinner strips, especially difficult-to-deform materials. In order to roll thinner strips and hard-to-deform materials, small-diameter work rolls can be used for rolling; however, during the rolling process of the work rolls, the strip steel exerts a horizontal force on the work roll surface, cau...

AI Technical Summary

Problems solved by technology

However, due to the structural limitations of the existing four-high and six-high rolling mills, the diameter of the work rolls is large, and it is difficult to roll thinner strips, especially hard-to-deform materials

In order to roll thinner strips and hard-to-deform materials, small-diameter work rolls can be used for rolling; however, during the rolling process of the work rolls, the strip steel exerts a horizontal force on the work roll surface, causing the work rolls to produce horizontal bending ; If the diameter of the work roll is reduced, the horizontal force will cause the work roll to bend and deform too much, which will not only affect the strip shape, but also cause the work roll to break

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