SU1349810A1 - Rolling mill - Google Patents

Abstract

The invention relates to rolling production, namely to the construction of rolling mills with rolling movement of rolled feed, and can be used in machine-building and metallurgical plants to have the advantage for sheet rolling of difficult-to-form billets. The purpose of the invention is the expansion of technological capabilities by ensuring that the thickness of the rolled metal is controlled during the rolling process. By mixing the support roll 11 along the axis, the preload of the metal scrap between the work roll 3 and the C-shaped liner 2 changes. The support roll 11, acting on the additional rolls 10, moves the pushers 7 with the work rolls 3. Measurement and change of the metal thickness can be carried out in an automatic cut -gme, 4 Il. a & B 22

Description

one

The invention relates to rolling production, in particular, to ksnst- hands of rolling mills with wave motion of rolled metal, and can be used in machine-building 1x and metallurgical plants with advantages; It can be used for sheet rolling of hard-to-work billets.

The purpose of the invention is the expansion of technological interactions by providing adjustment of the thickness of the rolled metal during the rolling process.

FIG. 1 shows a rolling mill, longitudinal section; iui- fig, 2 - the same5 cross-section; FIG. 3 is the same general view; in fig. 4 shows a scheme for automatically adjusting only the rolling stock during the rolling process.

The rolling stack contains a stationary frame 1 with a C-shaped profiling insert 5th staging 2 in it, covering the work rolls 3, .. installed in a rotary separator 4j made in the form of a rigid collar and provided with radial guides 5 and 6, which, with the possibility of moving the legs on the movement of the legs, are placed prismatic pushers 7, the working rolls 3 are mounted on the outer ends of the KCJ-wheels, and the internal trades 9 are equipped with additional rollers 10, contactors; with a backup roll 1 "

For cleansing and technological capabilities, by adjusting the thickness of the rolled metal during the rolling process, the prismatic pushers 7 execute: s of different lengths, and an additional 10 and support rolls and rolls are made conical, the latter is installed with Qcesoro displacement and provided with a drive 12. Prismatic lengths The pushers 7 are selected in such a way that the shape of the loop and the rolled metal covering the work rolls 3 along the outer forming parts is ellipsoidal.

The workers 3 and the additional 10 Hajr are equipped with pins 13, which are inserted into the bearing shields 14 of the standard pushers 7. The screw guides 5 and 6 are full; v.vide mounted on bearings 15 and s6 disks rigidly connected to the annular sectors 17 of the rotary separator 4. Internal surfaces of the disks and

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r,;: the best sectors of 1 form rectangular holes, in which the numbers 1; rhizmatic spruce 7. Vnesh-HPie S and the inner 9 ends of the prism with lix pushers 7 sec. At the same time, they are supplied with support cushions for workers 3 and supplement with:; -: 0 rolls. The rotation of the separator 4 is carried out by means of a paragraph of 18 og of a gel of about 3, i.e., citypigate; 1 (not shown).

To rewind the hard drive, your metal has a lithium; 19 and 20 utile.

The drive 12 axial displacement of the support shaft i 1 includes: electric zigatel 21, gearbox 22 and chassis

and screw 3,

For htm it LI eNI and rl t but then th u ti t si:; rokat | An automatic regulator is provided on the strip, which acts on the pressure actuator 2, which includes a box 24, which measures the pressure of the HC rolling of the metas.t; la on the support; -: roll 1, digital-analog converter 25, supply voltage, proportional to the nominal pressure, on the summing amplifier

26and further to the summing amplifier:

27, to which a blue sensor is also supplied. 28, the voltage is properioal: -1 r of the junction of the chassis viit 23, the motor control system 29 of the motor 21, which receives a signal from the sum of the summing trigger 27, a tachogenerator 30. kinematically connected with the rotor of the h: hectrodvig a7 ate 21.

Work caliber is formed internally30

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her surface

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-shaped profiles- pviBaHHoro insert 2 and the outer surface of the work roll 3, the prismatic pusher 7 of which is located on the larger axis of the well (with 1dal T1metl | rolled metal, the remaining workers vg1lki and 3 form a roller table, I mix and metal with minimal ; ibn-, friction and complete elimination of O-C-shaped profiled

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l; - of the coated insert 2 corresponds to the broken law; at the nodal deformation of the rolled metal and can be performed: - ei, nappr, in the form of Armamedoic c; ira.pi.

E the proposed IRM can be additionally provided with means for measuring and low-inertia re 1 speed detection pro. one

rollers, front and rear tensions of rolled steel in the deformation zone and other parameters, lubricants, emulsions, etc ..

The camp works as follows.

After the task of preparation, the required tensions and rolling speed are established using one of the known methods. When this rolled metal forms inside the frame I loop ellipsoidal shape, given the choice of the appropriate lengths of prismatic pushers 7,

The main motor (not shown) through the spindle 18 rotates the rotary separator 4 in bearings 15 and 16. A traveling deformation wave propagates along the rolled metal. The rolled metal for one revolution of the rotary separator 4 travels a distance equal to the difference between the lengths of the ellipsoidal loop and the working section of the C-shaped profiled liner 2. Since this difference is relatively small, the mill has the property of a wave gearbox. The frequency of the traveling deformation waves is determined by the speed of rotation of the rotary separator / 4, and their amplitude is the difference between the semiaxes of the ellipsoidal loop.

The rolled metal is rewound by the coilers 19 and 20 and in the working caliber it is compressed by a working roll 3, the prismatic pusher 7 of which is located on the large axis of the ellipsoidal loop of the rolled metal

In the rolling process, the rolling mill provides a smooth change in the thickness of the rolled metal in one direction or another, which is achieved by changing the size of the ellipsoidal loop of the rolled metal inside the frame 1. This allows reducing the thickness of the rolled metal by using an automatic regulator mechanism 12 and stabil

thickness of the metal being rolled near the set value.

The axial movement of the support roll 1 1, which determines the size of the ellipsoidal loop of the rolled metal, is provided by rotating the spindle 23 from the electric motor 21 by means of a gearbox 22 having a large gear ratio,

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When the support block 11 is moved to the left, as a result of the interaction of the conical surfaces of the additional support rolls 10 with the conical surface of the support roll I1, the prismatic tappets 7 move outwards. The size of the elliptical loop increases, the working caliber decreases, compression decreases and the thickness of the rolled decreases. At the same time, the difference between the lengths of the ellipsoidal loop and the working section decreases, the gear ratio from the main motor increases, the developed torque also increases and is aligned with the increased compression of the rolled metal.

When the support roll 11 is moved to the right, the prismatic pushers 7, on the contrary, are pushed inward. The size of the ellipsoidal loop decreases, the working caliber increases, the reduction decreases, and the thickness of the rolled products increases. At the same time, the gear ratio from the main motor decreases, the developed torque also decreases and is adjusted to the reduced compression of the rolled metal,

Measurement of the actual thickness of the rolled metal is carried out by an indirect method according to the sum of the readings of the resolver sensor 28, which characterize the axial position of the support roll 11, and the readings of the dose 24, which characterize the pressure of the metal to the support roll 11,

The adjustment of the elements of the system for measuring the actual thickness of the rolled metal is carried out by applying a predetermined thickness value to the corresponding stepper motor, which ensures the rotation of the master selsyn.

The nominal pressure of the rolled metal in the form of a code is fed to a digital-to-analog converter 25, from the output of which voltage proportional to pressure is fed to summing amplifier 26. In summing amplifier 26, voltage is subtracted proportional to the actual pressure reduced by medose 24 , from the voltage supplied from the digital-to-analog converter 25,

51

1: external voltage, active; ioial difference of absolute pressure and actual pressure, from the output of summing force 26, through an appropriate filter, removing armature components, due to rolls 3, 10 and entering the summing force amplifier 27,

When the actual thickness of the rolled metal deviates from the specified value, the output of the treated amplifier 27 appears in sum; for example, the nVp whose amplitude is proportional to this deviation, and the polarity unambiguously determines the direction of this deviation. According to the voltage, the voltage is applied to the motor control system 2E 21 only in order to avoid an emergency if there are 11 rolls: 1: the metal is in the working gauge, i.e., the voltage is 5 causing the machining

corresponding load :: - 1st p-barely „i

The voltage from the output of the sump 27, being applied to the electric control system 29 by the puller 21, triggers the actuation of the pressing mechanism 1 2, shifting your back-up roll 11 and changing the size of the ellipsoidal loop of the rolled metal in the direction of the snow; -; - Research Institute of the magnitude of the deviation of the thickness of the rolled metal from the specified value.

The input to the input of the summing amplifier 27 of the voltage from the tachographic generator 30, proportional to the rate of change in the size of the hinge loop of the rolled metal strip, corrects the automatic thickness regulator over the speed h. And ensures timely

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E.I.E.V.V. 21 under braking-- kfi-iHt than 1–; nt .pepcryjHip Ba; - povpnast: accuracy; stabilization (the length of the rolled metal.

H1o / (iacha ia ia input / l cyMMHpyieEiiero amplifier 27 the voltage from selsyn-sensor 28 corrects the automatic adjustment of the -1-1 regulator; n1-1 but amplitude and provides an increase in speed from 1e1 times the size of the elliptical - ches1-; oh pet. gfoc. vamogog metal at ooHbuU ix deviation, e - And x thickness of the metal) metal from the nominal value. This is a boost. the speed of the automatic regulator tol-KiHHb) and c; lowers the inertia,

Provision regulator: gir (lnits | base of rolled metal in the process of wave rolling significantly increases U. and p e T tehno l i i o u s; i iiOBiniiiae quality of rolling ,

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Lokaty stan, sod (nedi-Bizh: Gu y stanunz / s C-shaped profiles- P: dash} m liner 5 covering og; bows with a setrarator and, in the radialg (), of which it is possible to return it —Posting transmissions — there are a number of practical issues: whether the workers on the outside mountaineers have workers; and the insider are equipped with additional 4Tej4bHbMH shafts that are in contact with the on-off roller. and with the fact that. with nely ru 1: wider technological; -: with the possibilities ghutsm provide

, og ovoovana thickness prokat

.;, .- metal in the rolling process, the support block (..; - abzek with the axial drive of the meme; v “Mu K and completed, as well as acting with it, I, JTOHH RCKHM, while prismatic then.; Ka: whether zippochechy different landmarks ;: to

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E.I.E.V.V. 21 under braking-- kfi-iHt than 1–; nt .pepcryjHip Ba; - povpnast: accuracy; stabilization (the length of the rolled metal.

H1o / (iacha ia ia input / l cyMMHpyieEiiero amplifier 27 the voltage from selsyn-sensor 28 corrects the automatic adjustment of the -1-1 regulator; n1-1 but amplitude and provides an increase in speed from 1e1 times the size of the elliptical - ches1-; oh pet. gfoc. vamogog metal at ooHbuU ix deviation, e - And x thickness of the metal) metal from the nominal value. This is a boost. the speed of the automatic regulator tol-KiHHb) and c; lowers the inertia,

Provision regulator: gir (lnits | base of rolled metal in the process of wave rolling significantly increases U. and p e T tehno l i i o u s; i iiOBiniiiae quality of rolling ,

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Editor A. Kozorie Order 5214/6

Tirahs 48 Subscription

VNIIPI G of the State Committee of the CCC

but inventions from; -; fish 113035; Moscow, Zh-35. Raushska nab, d, 4/5

Production and printing 1G1, g:, with shopping malls; -, Uzhgorod, ul, Project ..

Claims (1)

FORMULA AND SECTION pi. A rolling mill containing a fixed bed with a C-shaped profile "with a hollow liner _{with a} supporting roll with. a separator, in the radial guides of which with the possibility of reciprocating transport and replacement; and the internal ones are equipped with additional rollers in contact with the back-up roll. This is due to the fact that. to broaden the technological capabilities by ensuring _g. to regulate the thickness of the rolled metal during the rolling process, the supporting bend is equipped with an axial lerez-enny drive and is made., as well as the deer in contact with it, rolls are conical. FIG. 1 Fig. 3 i 249810 Co s tavitsl g. Grew up in