A method and control device for on-line automatic roll shifting of work rolls of a skin pass mill

A work roll and skin pass mill technology, applied in contour control, metal rolling, etc., can solve the problems affecting the control reliability and accuracy of skin pass mill, unstable rolling zero position, time-consuming and laborious roll shifting operation, etc. Achieve the effect of avoiding precision adjustment and correction, ensuring stability and precision, and improving roller shifting efficiency

Active Publication Date: 2018-11-02
BEIJING SHOUGANG CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an online automatic roll shifting method for the working rolls of a temper mill, which solves the problem that in the prior art, the temper mill adopts an offline roll shifting method, which causes time-consuming and laborious roll shifting operations and unstable rolling zero position, which seriously affects the temper mill Control reliability and precision

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  • A method and control device for on-line automatic roll shifting of work rolls of a skin pass mill

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Embodiment Construction

[0023] The embodiment of the present application provides an online automatic roll shifting method for the work rolls of the temper mill to solve the problem that the off-line roll shifting method of the temper mill in the prior art causes time-consuming and laborious roll shifting operations and unstable rolling zero position, which seriously affects Reliability and precision of temper mill control; achieve the technical effect of improving the efficiency of roll shifting and reducing the impact of roll shifting on the stability and control accuracy of the unit.

[0024] In order to solve the above technical problems, the general idea of ​​the technical solution provided by the embodiment of the present application is as follows:

[0025] For the separate roll shifting control of the upper and lower work rolls, the upper roll area is implemented according to the conventional roll shifting method; the lower roll area is operated online according to a certain rotation speed and ...

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Abstract

The invention belongs to the technical field of steel rolling equipment, and discloses an online automatic roller scurrying method of a working roller of a planisher. The online automatic roller scurrying method comprises the following steps of lifting an upper supporting roller to an upper limit position; additionally arranging the upper supporting roller and an upper working roller in a balanced manner; moving the upper working rollers to a lifting position; driving a lower working roller and a lower supporting roller to rotate at a permanent speed; executing the scurrying operation of the upper working roller and the lower working roller; controlling the lower working roller and the lower supporting roller to stop rotating; and moving the upper working roller and the lower working roller to production preparation positions. Through the adoption of the roller scurrying method provided by the invention, the roller scurrying efficiency is improved, and influence on the stability and the accuracy of the planisher is reduced.

Description

technical field [0001] The invention relates to the technical field of steel rolling equipment, in particular to an online automatic roll shifting method and control device for work rolls of a skin pass mill. Background technique [0002] With the rapid development of the market economy, users have put forward higher requirements on the surface quality, shape effect, delivery form, mechanical properties and other aspects of hot-rolled strip steel. Therefore, as the last process of hot-rolled rolling Craftsmanship is becoming more and more important. [0003] During the normal production process of the hot rolling skin pass unit, with the extension of the roll period of the work roll, the wear of the edge of the work roll is serious compared with the middle part, and it is easy to show "W"-shaped uneven wear on the edge of the strip, resulting in the edge of the work roll Grooves appear, causing instability in strip shape control. At the same time, contact stress peaks appe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/40
CPCB21B37/40B21B2263/04B21B2269/14
Inventor 王凤美路统宪多彦玲王学强李金保周剑飞邓海雄程艳飞
Owner BEIJING SHOUGANG CO LTD
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