SU1237268A1 - Working stand for rolling mill - Google Patents

Description

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The invention relates to rolling production and can be used in ferrous and non-ferrous metallurgy enterprises, as well as in the hardware industry.

The aim of the invention is to increase the efficiency of adjusting the transverse profile of the strip.

The invention is illustrated in the drawings, where in FIG. 1 shows a working stand of a rolling mill with a device for adjusting the transverse profile of the strip; in fig. 2 is a view A of FIG. 1, intermediate rollers with common and additional pillows and a wedge in FIG. 3 - the same, in working condition.

The working stand of the rolling mill contains two support rolls 1, one of which is in contact with one work roll 2 and the other in direct contact with two intermediate rolls 3 located in a plane perpendicular to the plane of the axes of the work rolls and simultaneously in contact with the other a work roll 2. Common pillows 4 are put on the necks of the intermediate rolls; in the wedge-shaped grooves of which there are additional

soft pillows 5, located between two wedges mi - internal 6

and external 7. I

The working stand of the rolling mill works in the same way.

During the operation of the mill, when rolling the upper support barrel in; 1, the intermediate rolls 3 and the working rolls 2, which are in contact with each other, are clamped by the rolling pressure; And do not change their position. The drums of the intermediate rolls 3 are parallel to each other and do not bend in a horizontal plane, and the wedges 6 and 7 are located in the upper part of the grooves of the common pads in an idle state (Fig. 2).

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When rolling a strip with a concave cross-sectional profile, the inner wedge 6 is lowered, and the outer wedge 7 is raised along the guides of the common cushion. Moreover, the additional pillows 5 with the necks of the intermediate rolls 3 are moved in the horizontal plane in opposite directions. Since the roll barrels are clamped under the effect of rolling pressure, the intermediate rolls bend towards each other (Fig. 3). In this case, the middle of the barrel of the work roll 2, which is in contact with the intermediate rollers, is lowered, and the cross-sectional profile of the blade gap and the rolled strip becomes concave.

If the outer wedges 7 are lowered, and the inner wedges 6 are raised, then the additional pillows 5 with the necks of the intermediate rolls 3 arranged in them move towards each other.

Since the middle of the roll barrels does not change their position, the intermediate rolls bend in opposite directions. In this case, the middle of the barrel of the work roll 2, which is in contact with the intermediate rolls 3, is lowered and the cross roll gap of the work rolls and strip changes from concave to convex. The strip at the same time has a lenticular transverse profile.

The effectiveness of adjusting the transverse profile of the strip lies in the fact that the intermediate rolls bend with wedges, and the following pattern is absent: tearing and crushing of the roll barrels in the form of elastic and plastic deformation arising from the contact of the roll barrels with the rollers. In addition, in the described device, both necks of the intermediate roll are bent simultaneously, i.e. bending intermediate va.pkov is faster compared to the prototype.

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Editor I.Rybchenko

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Compiled by G.Rostov

Tehred L. Serdyukova Proofreader M. Maksimishinets

Order 3223/9 Circulation 518 Subscription

VNIIPI USSR State Committee for Inventions and Discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Production and printing company, Uzhgorod, Project St., G

Claims (1)

A WORKING CELL OF A ROLLING MACHINE, comprising two work rolls and two backup rolls located in a plane passing through the axis of the work rolls, and two intermediate rolls located in a plane perpendicular to the axis of the work roll axes and installed in common cushions, one of of the backup rolls is in contact with one work roll, and the other backup roll is in direct contact with two intermediate rolls at the same time in contact with another work roll, characterized in that, in order to increase effectively minute regulation of the transverse profile strips, each intermediate roller is provided with additional pads mounted in the wedge grooves formed in the common cushions q and installation equipped with wedges cooperating with additional cushions intermediate rolls. SU „, 1237268 fia!