SU1258527A1 - Working stand of rolling mill - Google Patents

Abstract

The invention relates to the field of prokitnogo production and can be used in enterprises of ferrous and nonferrous metallurgy, as well as in hardware products in the industry. The purpose of the invention is to increase the efficiency of the adjustment of the transverse profile of the strip. The keeper is additionally equipped with a set between the upper supporting and working rolls with two intermediate supporting rolls with common main and additional cushions, inside which are placed the main and additional cushions of the upper working roll, while the hydraulic expansion struts are installed between additional cushions rolls and additional ducks of the lower support roll, and the intermediate rolls of the rolls are made ifid convex. Alternately, the operation of the hydraulic cylinders located on opposite sides of the stand allows the intermediate and lower support rolls to be bent in a horizontal plane, which causes the work rolls to be bent in a vertical plane, allowing more efficient adjustment of the strip profile. 4 il. (Lu Yu SP 00 ate

Description

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

The purpose of the invention is to increase the efficiency of the adjustment of the transverse profile of the strip.

FIG. 1 shows the rolls and their additional pillows; in fig. 2 - working stand of the rolling mill with the mechanisms of bending of the intermediate rolls and work rolls in the horizontal plane; in fig. 3 - bending of the lower support roll in the horizontal plane; in fig. four -. bending of the intermediate rolls in the horizontal plane.

The working stand of the reversing rolling mill contains supporting 1 and 2 working rolls, two intermediate 3 rolls, an additional 4 pillow of the lower support roll, an additional pillow 5 of the lower work roll, an additional pillow 6 of the upper work roll, an additional pillow of 7 intermediate rolls and four hydraulic cylinders 8.

Working stand works as follows.

The hydraulic cylinders 8 to the left of the vertical axis of the cage develop the force FI. To the right of the vertical axis, hydrocylysized 8 does not work. At the same time on the additional cushions of the lower roll 4 there is a moment M, F, 1,. The shoulder 1 is equal to the distance between the axes of the hydraulic cylinders 8 located to the left and right of the vertical axis of the mill.

Moment M bends the lower support roller 1 in the horizontal plane against the direction of rolling (Fig. 3). In this case, the middle of its barrel is moved away from the vertical axis of the stand, and the middle of the lower work roll is lowered, and the rolled strip has a lenticular profile. The moment M, also bends the intermediate rolls 3 in the horizontal plane (Fig. 4). When the intermediate rollers bend against the rolling direction of the edge of the intermediate roll, located to the left of the vertical axis of the stand, they are affected by the edge of the upper work roll. Here, the edges of the barrel of the upper work roll are lowered, and the roll of the bend

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in vertical plane. The bending of the upper work roll in a vertical plane leads to rolling a strip of a convex (lenticular) transverse profile.

If there is no reinforcement in the hydraulic cylinders, then the middle of the barrel of the upper work roll, in contact with the intermediate barrels of the intermediate rolls 3, is lowered, and the strip has a concave transverse profile.

When the hydraulic cylinders 8, located to the right of the vertical axis of the stand, operate, i.e. during reverse rolling, the time is applied to the additional pillows 7 intermediate and additional pillows 4 of the lower support rolls in the opposite direction. The bending of the intermediate rolls 3 and the lower support roll 1 in the horizontal plane also occurs in the opposite direction. The work rolls are bent in a vertical plane and the strip is obtained, as in the first case, with a convex cross-section.

Thus, the bending of the intermediate and lower support rolls in the horizontal plane leads to the bending of the work rolls in the vertical plane, which allows for more efficient adjustment of the strip profile.

Claims (1)

Invention Formula The working stand of the rolling mill, comprising a stand, two support rolls and two work rolls installed in it, and hydraulic cylinders for spreading the roll cushions, and the work roll and at least one support rolls are equipped with additional pillows, characterized in that, in order to increase the efficiency of adjusting the cross section of the strip It is equipped with two intermediate support rolls placed between the upper supporting and working rolls with common main and additional pillows, inside of which there are main and additional pillows. s podztpki upper work roll, when e is thrust cylinders are mounted between the pillows pre- polnitelnmi intermediate rolls and additional cushions lower backup roll and intermediate roll barrels vtolneny vtuklymi. . g “1d; Lag vs f.3 .X Y / Compiled by G. Rostov Editor About Golovach Tehred A. Kravchuk Proofreader. Shekmar Order 5061/10 Circulation 518 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4