A new structure of fourteen-high steel plate cold rolling mill

Abstract

The invention provides a novel partial fourteen-roller steel plate cold rolling mill structure. A roller system is arranged in a J form; the structure comprises a set of working rollers, three sets of support rollers, three sets of back lining bearing rollers and a set of pressing devices symmetrically arranged up and down along a roller center line; the working rollers are deviated from the roller center lien by a certain distance, are supported by middle support rollers in the vertical direction, and are supported by transition support rollers and side support rollers in the side direction; the three sets of back lining bearing rollers are arranged on the peripheral surfaces, far from one sides of the working rollers, of the support rollers in sequence; multiple back lining bearings are respectively arranged in axial directions of three back lining bearing rollers; the bearings are arranged in a staggered manner; indentations cannot be generated among the rollers; and the pressing devices are clamped on shafts among bearings of the back lining bearing rollers. The roller system in rolling work is stable in structure, excellent in rigidity and capable of adjusting the convexity of the working rollers at any time to finish the plate shape adjustment; the rolling force and the deformation resistance of rolled steel are both directly acted in a roller surface range of the rollers; and the support rollers are not suffered from the bending moment, and generate no bending deformation, so that the plate rolling precision is higher.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and relates to a steel plate cold rolling mill, in particular to a structure of a novel partial fourteen-high steel plate cold rolling mill. Background technique [0002] Existing partial eight-high steel plate cold rolling mill, such as figure 1 As shown, it is modified on the basis of the traditional four-high rolling mill. It is to reduce the diameter of the work rolls to meet the requirements of rolling harder and thinner steel plates (strips). Due to the reduction of the diameter of the work roll, the decrease of its stiffness will affect the quality of the rolled product, so it is considered to deviate the work roll from the center line of the roll by a distance, and add a transition support roll, a backing bearing roll and a support roll to ensure the stability of the work roll. stiffness. There are problems: [0003] 1. The adjustment of the steel plate shape depends on the upward p...

AI Technical Summary

Problems solved by technology

Although the depressing device system is relatively simple, the arrangement of the force system in this device is seriously unreasonable

The rolling force P generated by the oil cylinder acts on both ends of the support roll, while the resistance force F generated by the rolled steel plate acts on the middle of the support roll, and a bending moment is generated on the support roll, causing the support roll to bend Therefore, compensation measures such as bending rolls, drawing rolls, and roll surface pre-grinding crowns are used, but none of them can control and adjust the defects at any point on the surface of the rolled plate. Therefore, traditional rolling mills continue to use this type of rolling system. The force distribution is very unreasonable, which greatly hinders the improvement of the quality of rolled products

[0005] Due to the above two main shortcomings of the partial eight-high steel plate cold rolling mill, the development of this type of rolling mill is greatly restricted

Images