A strip mill e1 vertical roll

Abstract

The invention relates to an E1 vertical roll of a plate and strip rolling mill. The bottom of the slot hole of the vertical roll includes a groove and an inclined surface, and the groove includes an upper inclined surface and a lower inclined surface of the groove. A smooth transition between the inclined surface and the lower inclined surface of the groove, a smooth transition between the inclined surface and the lower inclined surface of the groove, the length of the central axis of the vertical roller corresponding to the inclined surface is L1, and the length of the L1 greater than h, said h is the thickness of the slab when it passes through the second pass of the first rough rolling flat roll stand, and said L1+L2 <h，h为板坯在立辊侧压一道次前的热状态厚度，所述l1+l2+l3>H. The present invention changes the metal flow and the temperature at the sharp corners of the strip by changing the vertical roll pass, and avoids the formation of "thin lines" or "warped skin" defects.< / h，h为板坯在立辊侧压一道次前的热状态厚度，所述l1+l2+l3>

Description

technical field [0001] The invention relates to the technical field of strip rolling, in particular to an E1 vertical roll of a strip rolling mill. Background technique [0002] At present, the pass of the vertical roll of the rough rolling E1 of the strip production line adopts the flat roll shape, and the pass of the E1 vertical roll is as follows figure 1 shown. When the slab passes through the E1 vertical roll for side pressure and width reduction, according to the characteristics of the metal flow change at the edge during the rolling process, the sharp corners on the upper surface and side of the slab remain in their original positions (the temperature of the sharp corners is lower than other positions. low), and after being rolled by the horizontal rolls of the first rough rolling flat roll stand, the metal at the sharp corners of the slab is turned over to the upper surface, and at the same time, the iron oxide scales on the sharp corners are also pressed into the s...

AI Technical Summary

Problems solved by technology

[0003] In order to solve such defects, some domestic iron and steel enterprises have adopted the method of increasing the temperature of the slab out of the furnace to solve the defects of "thin lines" and "warped skin", but the effect is not obvious. Surface oxide scale defects, more increase the quality of the strip

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