A fourteen roller rolling mill

Abstract

The invention provides a fourteen roller rolling mill comprising a rack, a screw down system, a locking device and upper and lower roller systems. The screw down system consists of two sets of screw down mechanisms and is installed on the upper portion of the rack. The upper and lower roller systems are installed in the rack and are axially locked via the locking device. A balance device is installed between the upper and lower roller systems. The upper roller system consists of an upper gland, four supporting rollers, two middle rollers and one working roller, wherein the upper gland and the four supporting rollers form an upper supporting system of segmented support; the lower roller system consists of four supporting rollers, two middle rollers, one working roller and a lower pedestal, wherein the lower pedestal and the four supporting rollers form a lower supporting system. The upper supporting system and the lower supporting system formed by assembling the four supporting rollers and the upper gland and assembling the four supporting rollers and the lower pedestal can realize rolling of ultra-wide boards and can increase the rolling precision.

Description

technical field [0001] The invention relates to a metal calendering equipment, in particular to a fourteen-high hot strip rolling mill. Background technique [0002] Today's hot strip mills range from simple two-roll mills to complex multi-roll mills. In order to increase the stiffness of the rolling mill, the diameter of the rolls, especially the back-up rolls, is getting larger and larger. The purpose is to increase the stiffness of the rolling mill and reduce the deformation of the roll system. The resulting problems are: 1. The diameter of the back-up roll is too large, which causes the weight of the back-up roll to increase the consumption of the roll; 3. As the length of the roll increases, the deflection of the center of the roll increases; 4. In order to meet the standard requirements, it is necessary to use various roll types, string rolls, bending rolls and other complex control methods to achieve it together. 5. The width of the plate is increased to more than 6...

AI Technical Summary

Problems solved by technology

The resulting problems are: 1. The diameter of the back-up roll is too large, which causes the weight of the back-up roll to increase the consumption of the roll; 3. As the length of the roll increases, the deflection of the center of the roll increases; 4. In order to meet the standard requirements, it is necessary to use various roll types, string rolls, bending rolls and other complex control methods to jointly achieve

5. The width of the plate increases to more than 6000mm, and the current model of rolling mill can no longer meet the requirements

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