KR20020091717A - Apparatus for correcting a temperature in a hot strip roll - Google Patents

Abstract

PURPOSE: A temperature correction type cooling apparatus of hot rolling rolls is provided which injects cooling water onto the hot rolling rolls and controls the cooling water injection amount of a variable injection unit so that the surface temperature of the hot rolling rolls is uniformly distributed. CONSTITUTION: The temperature correction type cooling apparatus of hot rolling rolls comprises a cooling water supply unit(5) in which a bellows pipe(5-3) is connected to one side of a connection pipe(5-2) inserted into a motor so that the bellows pipe(5-3) is connected to a supply pipe(5-4); a piling unit in which a roll piling stand(6-3) which is positioned symmetrically to the cooling water supply unit(5), and on which a chock stopper is formed is inserted into one side of the cooling water supply unit(5); a cooling water variable injection unit(7) which is positioned at the rear of the piling unit, and in which an injection pipe is connected to a solenoid valve connected to a connection pipe, and cooling water is injected by an exterior angled injection port; a roll cooling unit which is positioned at one side of the piling unit, and in which the cooling water variable injection unit(7) is inserted into thus locked to a plurality of fittings of upper and lower roll cooling pipes, and the upper and lower roll cooling pipes are inserted into upper and lower roll cooling pipe spigots of a main body respectively; and a temperature measuring and shape recording unit(9) which is positioned at the other side of the piling unit, and in which a shape recording unit assembled screw is inserted into a spigot of a main body.

Description

Temperature Compensation Cooling Device for Hot Rolling Rolls {APPARATUS FOR CORRECTING A TEMPERATURE IN A HOT STRIP ROLL}

The present invention relates to a temperature-compensated cooling device for hot rolled rolls, which must be cooled by using a coolant in a hot rolled roll drawn out from a mill stand after the hot rolling operation. The present invention relates to a temperature-compensated type uniform cooling device of a hot rolled roll, which enables cooling to be performed at a uniform temperature over.

1 is a perspective view showing a hot rolled roll cooling method according to the prior art, generally placed in the hot rolled roll (1), it is injected to the top by the injection nozzle (4) through the cooling water supply line (3) Cooling water is sprinkled on the hot rolled roll (1) in the drop type in the cooling.

However, in such a method, a temperature difference occurs between a portion where the coolant directly touches and a portion that flows down, and non-uniform cooling is performed even by the injection state of the plurality of coolant injection nozzles 4.

In particular, there is a significant temperature difference between the center of the hot rolling roll (1) through which the slab (SLAB) or strip (STRIP) is sent during hot rolling operation and the sides of the hot rolling roll (1) that are not, and thus can be corrected so far. Due to the non-uniform roll shape due to the temperature difference caused by this, it is difficult to give an accurate cylinder degree when grinding the roll, and in this way, the hot rolling operation is performed with a roll whose cylinder degree is not accurate. There is a problem that hot coils (HOT COIL) are not produced.

The present invention has been made in view of the above-mentioned problems in the prior art as described above, and solves this problem. The hot water roll is placed in the hot rolled roll, and after the rotation, a variable spraying device capable of adjusting the injection amount is applied to the hot rolling roll. By measuring the surface temperature of the cooling unit and predicting the shape and controlling the amount of cooling water sprayed by the variable injection device through the data, the surface temperature of the hot rolling roll can be uniformly formed and the state can be recognized by the shape recording device. It is an object of the present invention to provide a temperature corrected cooling apparatus for a hot rolled roll.

The above object of the present invention and the cooling water supply device is connected to the supply pipe is connected to the corrugated pipe on one side of the connection pipe inserted into the motor; A roll placement device inserted symmetrically positioned on one side of the cooling water supply device and having a choke stopper therein; A coolant variable injection device positioned at a rear side of the accumulator and connected to a connection pipe with a solenoid valve connected to an injection pipe and injected by an external injection port; A roll cooling device positioned at one side of the stacking device, wherein the coolant variable injection device is inserted into a plurality of connections of upper and lower roll cooling pipes, and the upper and lower roll cooling pipes are respectively inserted into upper and lower roll cooling pipe inserts of the main body; A screw located on the other side of the accumulator and assembled with a shape recording device is achieved by including a temperature measuring and shape recording device inserted into an insertion opening of the main body.

1 is a perspective view showing a hot rolled roll cooling method according to the prior art,

Figure 2 is a perspective view of a temperature compensation cooling device of a hot rolled roll according to the present invention,

3 is an exploded perspective view of a cooling water supply device and a roll stacking device of a temperature-compensated uniform cooling device of a hot rolled roll according to the present invention;

4 is an exploded perspective view of a coolant variable spray device and a roll cooling device of a temperature-compensated uniform cooling device of a hot rolled roll according to the present invention;

5 is an exploded perspective view of a temperature measuring and shape recording apparatus of a temperature-compensated uniform cooling device of a hot rolled roll according to the present invention;

Figure 6 is an exploded perspective view of the roll driving device and the state of cooling the hot rolled roll of the temperature compensation type uniform cooling device of the hot rolled roll according to the present invention.

Explanation of symbols on the main parts of the drawings

1: Hot Rolled Roll 2: Hot Rolled Roll Choke

5: cooling water supply 6: roll stacker

7: coolant variable injector 8: roll chiller

9: Temperature measuring and shape recording device 10: Roll drive device

Hereinafter, a preferred embodiment according to the present invention will be described in more detail on the basis of the accompanying drawings.

2 is a perspective view of a temperature correction type cooling apparatus of a hot rolled roll according to the present invention, Figure 3 is an exploded perspective view of a cooling water supply device and a roll stacking device of the temperature compensation type uniform cooling apparatus of a hot rolled roll according to the present invention, 4 is an exploded perspective view of a cooling water variable spray device and a roll cooling device of a temperature-compensated uniform cooling device of a hot rolled roll according to the present invention, and FIG. 5 is a temperature of the temperature-compensated uniform cooler of a hot rolled roll according to the present invention. 6 is an exploded perspective view of a measurement and shape recording apparatus, and FIG. 6 is an exploded perspective view of a roll driving apparatus of a temperature compensation type uniform cooling apparatus of a hot rolled roll and a state in which the hot rolled roll is cooled.

2 to 6, the cooling water supply device 5 and the roll stacking device 6, the roll cooling device 8 combined with the cooling water variable injection device 7, and the temperature measuring and shape recording device 9 and the roll The drive device 10 is comprised.

The cooling water supply device 5 inserts a pump 5-1 into the cooling water tank, and assembles a connecting pipe 5-2, a corrugated pipe 5-3, and a supply pipe 5-4.

The roll stacker 6 has symmetrical symmetry on both sides, and a roll stacker 6-3 having a choke stopper 6-4 formed therein into the cylinder 6-2. ) Assemble and insert.

The roll cooling device moving path 6-6 and the temperature measuring and shape recording device moving path 6-7 are machined on both sides of the roll stacking device, and the roll driving device moving path 6-5 is provided on the front surface.

The coolant variable injector 7 assembles a solenoid valve 7-2 to a connection pipe 7-1, and supplies a supply pipe 7-5 on which a radial pipe is processed on the front side of the solenoid valve. Assemble to 7-2).

As shown in FIG. 4 (7), the central injection pipe 7-11 and the outer injection hole 7-10 are disposed on the front surface of the cover COVER 7-9 having the flow plate 7-8 attached thereto. Assemble the machined front cover (7-12), attach the fixing plate (7-6) and the cylinder (7-7) symmetrically on both sides of the supply pipe, and then mount the threaded packing (7-3). Assemble the cover (7-4).

The roll cooling device 8 processes the upper roll cooling pipe inserting holes 8-4 and the lower roll cooling pipe inserting holes 8-5 in the main body 8-1, and provides a plurality of coolant variable spray device connecting holes 8-8. Assemble the upper roll cooling pipe (8-7) and the lower roll cooling pipe (8-6) processed, and connect it to the supply pipe (5-4) of the cooling water supply device (5) and then the body (8-1) Assemble the cylinder (8-2) to the lower connection block (8-3) and insert it into the roll cooling device moving path (6-6), and a plurality of variable cooling water injection to the cooling water variable injection device connector (8-8) Assemble the device (7).

The temperature measuring and shape recording device 9 processes the upper and lower screw insertion holes 9-12 on the main body 9-1 so as to coincide with the center of the roll 1, and transfers the nut 9-3. Assemble and insert bearing blocks (9-5) on both sides of the screw (9-6) to which the combined profile recorder (9-2) is assembled, and insert the motor (9-4). Assemble to screw.

A plurality of temperature measuring sensor insertion holes 9-9 are processed through the main body 9-1, a temperature measuring sensor 9-8 is inserted, and a motor 9-10 is connected.

The cylinder 9-11 is assembled to the connecting block 9-7 below the main body 9-1, and inserted into the temperature measuring and shape recording apparatus moving path 6-7.

The roll driving device 10 connects and assembles a coupling 10-5 having an inner diameter 10-6 having the same shape as that of the motor 10-4 and the roll end to the body 10-1. Assemble the lower connection block (10-2) and the cylinder (10-3), and then insert into the roll drive movement path (6-5). Install the operation panel 11 to operate the above components.

The present invention made up of such a configuration works as follows.

After the hot rolling operation, the hot rolling roll 1 drawn out of the mill stand is placed on the loading stand 6-3 to be fixed by the choke stopper 6-4 of the roll loading device 6, and then the roll driving device 10 ) Advances the inner roll 10-6 of the rolling roll 1 and the coupling 10-5.

Drive the motor 10-4 of the roll drive to rotate the roll, and then advance the roll cooling device 8 and the cylinders 8-2 and 9-11 of the temperature measuring and shape recording device 9 to the roll. The cooler 8 and the temperature measuring and shape recording device 9 are brought close to the roll 1, and then the solenoid is moved forward by moving the cylinder 7-7 of the coolant variable spray device and starting the coolant pump 5-1. When the valve 7-2 is opened, the coolant supplied through the supply pipe 7-5 is injected to the outer injection hole 7-10, and the coolant is expanded and sprayed widely.

The motor 9-10 of the temperature measuring sensor 9-8 is driven to contact the roll with the temperature measuring sensor to check the surface temperature of the roll.

Where the target temperature is reached, it is no longer cooled by blocking the electronic valve 7-2 of the coolant variable injection device 7 corresponding to the target temperature.

Cooling is continuously performed by opening and closing the solenoid valve until all parts of the roll are cooled to a uniform temperature. When the cooling operation is completed, the cooling water is shut off, and the surface is checked by cooling the roll while rotating the roll. If there is less part, the roll is positioned in front of the coolant variable injection device 7, the cylinder 7-7 is reversed, and the coolant is locally sprayed through the central injection pipe 7-11 to cool.

As such, the surface of the hot rolled roll can be uniformly cooled through the variable coolant variable injection device 7 capable of local cooling and extended cooling of the roll according to the data of the temperature measuring sensor. When the work is completed, the shape recording apparatus 9-2 is brought into contact with the roll, and then the motor 9-4 is driven to record the profile PROFILE of the roll.

As described above in detail, the present invention can produce a roll having a uniform temperature even if the roll is carried out under any rolling conditions and the roll is drawn, as well as preventing roll defects due to temperature deviation, roll defects It is possible to prevent the failure of the rolled material due to, and also cooling to only the required temperature provides an effect that can reduce the amount of cooling water used.

Claims (1)

A cooling water supply device 5 connected to the supply pipe 5-4 by connecting the corrugated pipe 5-3 to one side of the connection pipe 5-2 inserted into the motor 5-1; A stacking device 6 having a chock stopper 6-4 having a choke stopper 6-4 formed thereon and positioned symmetrically on one side of the cooling water supply device 5; The solenoid valve 7-2, which is located at the rear side of the accumulator 6 and connected to the connection pipe 7-1, is connected to the injection pipe 7-11, and the coolant is injected by the external injection port 7-10. An injector 7; Located on one side of the accumulator (6), the cooling water variable injection device (7) is fastened into a plurality of connections (8-8) of the upper and lower roll cooling pipe (8-6, 8-7) and the upper and lower roll cooling pipe Roll cooling devices 8 having 8-8 and 8-7 inserted into upper and lower roll cooling pipe insertion holes 8-4 and 8-5 of the main body 8-1, respectively; The temperature measuring and shape recording device 9 in which the screw 9-6, which is located at the other side of the accumulator 6 and assembled with the shape recording device, is inserted into the insertion hole 9-9 of the main body 9-1. Temperature-compensated cooling device for hot rolled rolls, characterized in that configured.