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Working roll technique for controlling edge drop of cold-rolled steel

A technology for working rolls and cold-rolled steel, which is applied in the direction of rolls, manufacturing tools, and contour control. It can solve the problems of the working rolls’ inability to move axially and edge drop control, and improve the state of contact pressure between rolls. The effect is obvious. The effect of preventing localized pressure spikes

Inactive Publication Date: 2009-02-18
UNIV OF SCI & TECH BEIJING
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0014] Through the development of special high-order curve work roll shape technology, solve the defect of weak edge drop control ability when the work roll cannot move axially when rolling electrical steel

Method used

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  • Working roll technique for controlling edge drop of cold-rolled steel
  • Working roll technique for controlling edge drop of cold-rolled steel
  • Working roll technique for controlling edge drop of cold-rolled steel

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Experimental program
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Effect test

Embodiment Construction

[0041] The roll shape of the work roll is designed according to the electrical steel of the rolled width specification. The upper and lower working rolls adopt the same roll curve equation, used in pairs, and adopt the same roll curve, the curve form is as follows Figure 5 shown. No additional modifications to other equipment or control models are required after use. The roll shape parameters ensure that the roll shape of the strip body is approximately straight, and the edge drop is controlled by increasing the roll gap opening at the edge of the strip. The processing of the work rolls is realized by a CNC grinding machine capable of grinding high-order curves.

[0042] After the implementation of the hexagonal curve work roll technology, the edge drop control ability of the rolling mill has been greatly improved, and the edge drop of cold-rolled electrical steel products has been reduced from the original 15 μm to less than 10 μm.

[0043] In order to better understand t...

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Abstract

The invention relates to a working roll technology for controlling the edge drop of cold rolled steel. With the special high-order curve working roll forming technology, the technology solves the disadvantages that a rolling machine with a working roll which can not axially move has weak capacity of controlling the edge drop when electric steel is rolled. The technology can control the edge drop of the electric steel below 10 mu m, simultaneously improve the control performance of the plate shape of the rolling machine, increase the transverse rigidity for bearing roll gap, improve the state of contact pressure between rolls and prevent the roll from shelling off caused by local pressure peak. The technology is suitable for the cold rolling machine with the working roll which can not axially move, in particular for the rolling machine which infrequently changes the rolling width and the rolling specification.

Description

technical field [0001] The invention belongs to metallurgical machinery, automation and rolling technology. Specifically, it refers to a work roll shape technology that can reduce the edge drop of cold-rolled steel. Background technique [0002] Cold-rolled electrical steel, as a high-efficiency, energy-saving, and large-volume excellent soft magnetic functional material that is prioritized by the country, is the top priority in the adjustment of the variety structure of my country's iron and steel industry. Plate shape and plate thickness are two major indicators that determine the geometric accuracy of electrical steel sheets. Due to the continuous improvement and use of the AGC system, the longitudinal thickness difference of electrical steel sheets can be controlled within a few microns, which can basically meet the needs of users. In contrast, its shape accuracy is still difficult to meet the increasingly stringent requirements of the market. Plate shape includes two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/30B21B27/02
Inventor 何安瑞邵健杨荃
Owner UNIV OF SCI & TECH BEIJING
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