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Six-roller mill and strip steel plate shape control method

A six-high rolling mill and rolling mill technology, applied in the field of steel rolling, can solve problems such as low rolling speed, difficult use and maintenance, large horizontal deflection of work rolls, etc., and achieve the effect of improving strip shape, fast response speed, and eliminating horizontal deflection

Pending Publication Date: 2022-04-12
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of industry, the demand for high value-added steel such as stainless steel and high-strength steel is increasing. These special steel materials have high yield strength and large cold work hardening. In order to obtain a certain compression ratio, it is necessary to use a small roll diameter. Due to the limitation of the diameter of the work rolls, it is impossible to use a coupling to connect the work rolls for direct transmission, but a coupling must be used to connect the intermediate rolls for transmission. Due to the requirement of rolling torque transmission between the rolls, the intermediate rolls and There is a large horizontal force between the work rolls, which will cause a large horizontal deflection of the work rolls, resulting in shape problems
In order to reduce the horizontal deflection of the work rolls, 18-high rolling mills or 20-high rolling mills with lateral supports are often used for rolling, but these rolling mills with lateral supports have poor product surface quality compared with ordinary six-high rolling mills. Disadvantages such as complex structure, low rolling speed, difficult use and maintenance, and difficult realization of continuous production

Method used

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  • Six-roller mill and strip steel plate shape control method
  • Six-roller mill and strip steel plate shape control method
  • Six-roller mill and strip steel plate shape control method

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Embodiment 1

[0022] like figure 1 and figure 2 , the embodiment of the present invention provides a six-high rolling mill, including a pair of work rolls 2, each work roll 2 is equipped with a pair of work roll chocks 21, at least one of the work rolls 2 is equipped with a horizontal deflection control mechanism; the horizontal deflection The control mechanism includes two groups of horizontal roll bending units arranged on the transmission side of the rolling mill and the operating side of the rolling mill; each group of horizontal roll bending units includes two horizontal roll bending cylinders 61 arranged on the entrance side of the rolling mill and the exit side of the rolling mill. The axes of the roll cylinders 61 are all parallel to the strip running direction of the rolling mill, and the output ends of the two horizontal roll bending cylinders 61 in the same group are opposite and both abut against the work roll chocks 21 on the corresponding side.

[0023] Generally, the above-...

Embodiment 2

[0035] An embodiment of the present invention provides a method for controlling the shape of a strip steel strip. The strip steel is processed by a six-high rolling mill, including:

[0036] Apply a horizontal roll bending force to the work roll 2 of the six-high rolling mill to reduce or eliminate the horizontal deflection of the work roll 2, thereby improving the strip shape, wherein the direction of the horizontal roll bending force is parallel to the strip running of the rolling mill direction.

[0037] Further preferably, the horizontal roll bending force is applied to the work roll chocks 21, wherein, for each work roll chock 21, a horizontal roll bending cylinder 61 is respectively arranged at the entrance side of the rolling mill and at the exit side of the rolling mill and passed through two horizontal roll bending cylinders. The roll bending cylinders 61 respectively apply horizontal force to the work roll chock 21 , and the horizontal force of the two horizontal rol...

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PUM

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Abstract

The invention relates to a six-roller mill. At least one working roller is provided with a horizontal deflection control mechanism. The horizontal deflection control mechanism comprises two groups of horizontal roll bending units which are respectively arranged on the transmission side and the operation side of the rolling mill; each group of horizontal roll bending units comprises two horizontal roll bending cylinders which are respectively arranged on the inlet side and the outlet side of the rolling mill, the axis of each horizontal roll bending cylinder is parallel to the strip steel running direction of the rolling mill, and the output ends of the two horizontal roll bending cylinders in the same group are opposite and are propped against the working roll bearing seats on the corresponding sides. In addition, the invention correspondingly provides a strip steel plate shape control method. According to the six-roller rolling mill provided by the invention, the horizontal roller bending cylinders are arranged to apply horizontal force to the working roller bearing seats, so that the working rollers have a horizontal roller bending function, and the horizontal deflection of the working rollers can be reduced or eliminated, so that the strip steel plate shape is improved; a horizontal deflection compensation value is converted into horizontal roll bending force through a linear mechanical equation for control, and the response speed is high.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular relates to a six-high rolling mill and a strip shape control method. Background technique [0002] With the rapid development of industry, the demand for high value-added steel such as stainless steel and high-strength steel is increasing. These special steel materials have high yield strength and large cold work hardening. In order to obtain a certain compression ratio, it is necessary to use a small roll diameter. Due to the limitation of the diameter of the work rolls, it is impossible to use a coupling to connect the work rolls for direct transmission, but a coupling must be used to connect the intermediate rolls for transmission. Due to the requirement of rolling torque transmission between the rolls, the intermediate rolls and There is a large horizontal force between the work rolls, which will cause a large horizontal deflection of the work rolls, resulting in a sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B13/02B21B31/06B21B31/07B21B37/38
Inventor 杨柳
Owner WISDRI ENG & RES INC LTD