SU1447447A1 - Arrangement for regulating the bending of rolling mill rolls of multiroll mill - Google Patents

Abstract

The invention relates to rolling production, and more specifically to devices that regulate the profile of the work rolls of rolling mills, and can be used on multi-roll mills to control the transverse profile and the shape of rolled strips. Purpose of the invention

Description

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reduction of flatness of rolled stripes by increasing the efficiency of the profile adjustment of the work roll. To improve the accuracy of adjusting the profile and the shape of the strips, the working fluid under pressure through pipeline 8 is supplied to a hydraulic pad 4, made in the middle part of the support bridge 3. Under the action of the working fluid, the elastic membrane 5 bends, causing the movement of the supports 6 in the middle parts of axis 2. In this case, axis 2 bends in its middle part. In order to bend the intermediate rolls 15 in the opposite direction, the pressure in the hydraulic n6-arc 4 is relieved. The rollers 12 are rotated, while the eccentrically mounted bushes, interacting with the grooves, cause the pushers to move. - By changing the position of the pushers, the bending of the axis 2 and the intermediate rolls 15, which act on the work rolls of the roller mill, is adjusted. When adjusting the profile of the barrels of the work rolls by means of the proposed device, the amplitude of the waviness on the rolled strips is reduced to mm per I p. m instead of 10-12 mm per 1 p. using a prototype device. The proposed device allows reducing scrap and sorting of cold-rolled strips on flatness by 2.2%. 5 il.

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one

The invention relates to rolling production, and more specifically to devices that regulate the profile of the work rolls of rolling mills, and can be used in multi-roll mills to control the cross section and the shape of the rolled strips.

The purpose of the invention is to reduce the flatness of rolled strips by increasing the efficiency of adjusting the profile of the work roll.

FIG. 1 is a schematic representation of the proposed device for adjusting the deflection of the work roll in the horizontal plane in FIG. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. I; FIG. 4 is a section B-B in FIG. one; Fig, 5 is a diagram of the roll system with two intermediate rollers,

The device for adjusting the deflection of the mill roll of a multi-roll mill consists of rollers 1 mounted on axis 2, a support bridge 3 with a hydraulic pad 4, which is closed on the side of rollers 1 by a membrane 5, which interacts with part of the supports 6 that carry axis 2. The central part is supporting bridge 3 on the length of the membrane 5 is separated from its end parts with 1 drilling slots 7, the smaller horizontal sections of which are facing in

five

The pipeline 8 hydropodushki. These pipelines are connected to a hydraulic system (not shown).

At the end portions of the supporting bridge, two horizontal holes 9 are made on each side of the grooves 7, which connect to vertical holes 10 that are perpendicular to them 10. In holes 9, pushers 11 are mounted, and in holes 10 there are turn rolls 12, on each pusher from the side of the twin roll, there is a groove 13, on the part of the roll facing the pusher, an sleeve 14 is placed eccentrically located in the groove 13.

The rollers 1 are in contact with the barrel intermediate roller 15, the neck 16 of which is installed in the bearings 17.

The device works in the following way.

Under the action of the working fluid coming through the pipeline 8, the membrane 5 bends in the horizontal plane and measures the supports 6 in the central part of the axis 2. In this mode of operation, the axis 2 bends in the central part relatively fixed parts. The bending of the axis is transmitted through the rollers I to the barrel of the intermediate roll 15, which is also bent in its central part. For a mill with a roll system shown in FIG. 5, the deflection of the work rolls is varied as follows.

If the two intermediate rollers 15 and the two roller sections are in the same horizontal plane, the middle of the drums of the intermediate rolls 15 converge together and the middle of the barrel of the work roll 18 descends, the transverse profile of the strip and the roll gap becomes double-curved and the strip becomes more crimped

in the middle. If during rolling the cavity is 10-12 mm per 1 linear meter, it has a shape defect in the form of a wave when adjusting the flatness of the toe along the edges, while changing the inter-according to the proposed invention, the roller gap and the strip profile crooked on two, strip gets

the amplitude of the waviness is reduced to 7-10 mm by 1 running. m

more compression in the middle and will be. have a flat shape.

In order to bend the intermediate rolls 15 in the opposite direction, the pressure in the hydraulic cushion is relieved, the gas line 8 is turned off. The rollers 12 are rotated, with the eccentrically mounted sleeves 14 interacting with the slots 13, causing the pushers 11 to move in a horizontal plane (Fig. 3). Pushers 11 through the supports 6 cause bending of the extreme parts of the axis relative to its central part.

The rollers 1 cause the bending of the roll 15 in a manner similar to the bending of the axis 2 of the roller section. If the two intermediate rollers 15 and two roller sections are in the same horizontal plane, then during the considered bending the edges of the intermediate rollers come together, and the working roll edges that are in contact with them lower the cross profile of the roll roll gap and the strip becomes convex

(lentil-shaped) and the strip receives a rolling mill roll, on both sides there is a greater compression along the edges. If the hydraulic cushion is fn-rolled on a multi-roll mill, the slots are grooved; the mirrors located in the mold have a shape defect in the form of a wave symmetrically relative to the cross section - nosti in the middle, then with a changed axis of the bridge.

It receives a greater reduction along the edges of the research institute of the profile of the megalithic gap. Such a change in the bending of the axis leads to the rolling of a flat strip. Thus, the regulation of the cross-roll profile of the roll gap leads to a change in its cross-section and the elimination of geometric defects.

When adjusting the profile of the barrel of the work roll according to the known device, the deviation of the rolled strip from the plane (amplitude wavy

t) is 10–12 mm per 1 gauge while controlling the flatness according to the invention.

the amplitude of the waviness is reduced to 7-10 mm by 1 running. m

Thus, the use of the proposed device allows reducing the scrap and sorting of cold-rolled sheets by flatness on

2.2% ..

Claims (1)

Apparatus of the Invention A device for adjusting the deflection of a multi-roll mill rolling mill, for example, an ectvino six-roll mill, containing a series of rollers mounted on an axis and in horizontal contact with a roll barrel located in the intervals between adjacent rollers and along axial ends of the axis interacting with supports axles, supporting seats, having a hydraulic feeder in the central part, and at the end parts - driving pushers, in contact with opposite supports of the axis, characterized in that, The goal is to reduce the flatness of rolled strips by increasing the efficiency of the profile adjustment Phie.E / / fig.g b b in-in Phie. Editor Y. Sereda Compiled by Yu L mov Tehred L. Serdyukova Proofreader S. Shekmar Order 6782/8 Circulation 467 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow,. Ж-35, Raushsk nab. 4/5 ffua.s Subscription