Work roller combining edge drop control and convexity control of strip steel

Abstract

The invention provides a work roller combining the edge drop control and the convexity control of a strip steel. The work roller mainly comprises three sections of roller forms: a first convexity control section, a second edge drop control section and a third linear section, wherein the two ends of the edge drop control section are respectively tangent with the convexity control section and the linear section so as to realize the curvy smooth transition of the work roller; effective control over the central convexity is enhanced by the convexity control section through the adoption of a sinusoidal curve function form; the taper angle of the edge drop control section is increased along with the increase of the length of a taper section through the adoption of an arc curve by the edge drop control section, the edge drop control section is approximately in linear regular variation, and effective control over edge drop is easy to realize; the edge drop control section is tangent with the linear section, the grinding quantity of the work roller can be reduced, and the grinding processing of the roller forms is facilitated; when edge drop and the central convexity are controlled, as the convexity control section of the work roller adopts the sinusoidal curve function form, the central convexity slightly fluctuates in the axial roller shift process of the work roller, and the control over the convexity during actual production is facilitated.

Description

technical field [0001] The invention relates to a roll used for strip shape control in strip rolling production, in particular to a roll for strip edge drop control and crown control in a cold tandem mill. Background technique [0002] In order to improve the control level of strip cross-section shape and edge thickness, and further increase the yield of rolling mills, various types of rolling mills have emerged as the times require. At present, there are mainly the following control methods in the field of strip shape control, especially strip edge drop control: K-WRS technology, edge control roll (EDC roll) technology, work roll enhanced cooling (EDC cooling) technology, T-WRS&C mill technology Wait. in: [0003] (1) Document 1 (Suganuma N, et al. Application of K-WRS mill to cold rolling. Proceedings of the 1985 Japanese Spring Conference for Technology of Plasticity, 1985: 41-44) reported that K-WRS technology is the UCMW rolling mill using K -WRS roll, that is, the w...

AI Technical Summary

Problems solved by technology

SMS company's work roll enhanced cooling (EDC cooling) technology adds cooling spray rods on the basis of the original work roll segmental cooling system, and arranges them on the exit side of the work rolls. The enhanced cooling area forms a large drop temperature field and avoids thermal convexity in the edge area. If the excess is too large, the strip will drop sideways, and the side drop control effect is obvious, but the construction and maintenance costs are relatively high

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