KR101370505B1 - Apparatus for adjusting position of slab extracted from heating furnace - Google Patents

Abstract

The present invention is a device for correcting the position of the slab extracted from the heating furnace, installed on the exit side of the heating furnace, the extraction unit for extracting the slab heated in the heating furnace to be seated on the transfer roll; A detection unit positioned between the heating furnace and the extraction unit and configured to detect a defective position of the slab extracted by the extraction unit; And a control unit for determining whether the slab is in a poor position by receiving the signal detected by the detection unit, and controlling the extraction unit so that the slab is seated at the correct position of the feed roll when it is determined that the slab is in poor position. Disclosed is a position correction apparatus for a furnace extraction slab, characterized in that it comprises a. The position correction device of the heating extraction slab as described above can correct the position of the abnormal extraction slab extracted from the heating furnace to prevent the abnormal extraction slab from colliding with the facility when transferred to the post-process.

Description

Placement correction device of furnace extraction slab {APPARATUS FOR ADJUSTING POSITION OF SLAB EXTRACTED FROM HEATING FURNACE}

The present invention relates to a position correction device for a slab, and more particularly to a position correction device for a furnace extraction slab for correcting the abnormal slab extracted from the heating furnace in place.

In general, the hot rolling process proceeds in the order of heating → rolling → cooling → correction of the slab to produce a hot rolled steel sheet. Slab, which is a material used in hot rolling, belongs to a relatively heavy material having a thickness of 120 to 300 mm, a width of 1200 to 2000 mm, and a length of 1480 to 3000 mm, and is heated to a high temperature necessary for rolling in a heating furnace before rolling. Lose. The heating temperature of the slab in the furnace is set to obtain the mechanical properties required in the cooling process as well as to reduce the load in the rolling, the usual heating temperature is about 1200 ~ 1330 ℃. In addition, the heating furnace used for heating the slab is divided into three stages: preheating zone, heating zone, and cracking zone. Each zone continuously supplies a certain amount of fuel to maintain the required temperature.

The slab charged in the furnace is moved to the extraction point by the operation of a pusher, etc., and is heated to have a sufficient temperature by the time of reaching the extraction point. An extractor for extracting the slab that has been heated is installed at the exit side of the heating furnace, and a transfer roll for transferring the slab extracted from the heating furnace to the destination is installed between the heating furnace and the extractor. Therefore, the slabs heated to a temperature suitable for rolling in the furnace are extracted one at a time by an extractor installed at the exit side of the furnace, and the extracted slabs are seated on the feed roll by the extractor and then transferred to the destination rolling mill. do.

However, due to the slip of the working beam or the stroke of the extractor, the extracted slab may not be seated in the upper proper position of the feed roll. The abnormally extracted slab is in a twisted state in which its longitudinal direction is not parallel to the normal moving path by the feed roll. When the abnormally extracted slab is transferred to the rolling mill, components that make up the facility, for example, a side guide and It collides with a scale peeler, etc., and causes a problem of damaging a facility. In addition, the process has to be stopped in order to calibrate the abnormal extraction slab, there was also a problem of lowering the operation rate of the equipment.

The present invention has been made in order to solve the above problems, the heating furnace extraction that can prevent the collision with the facility when the abnormal extraction slab is transferred to the post-process by correcting the position of the abnormal extraction slab extracted from the heating furnace It is intended to provide a device for positioning a slab.

The present invention is a device for correcting the position of the slab extracted from the heating furnace, installed on the exit side of the heating furnace, the extraction unit for extracting the slab heated in the heating furnace to be seated on the transfer roll; A detection unit positioned between the heating furnace and the extraction unit and configured to detect a defective position of the slab extracted by the extraction unit; And a control unit for determining whether the slab is in a poor position by receiving the signal detected by the detection unit, and controlling the extraction unit so that the slab is seated at the correct position of the feed roll when it is determined that the slab is in poor position. Disclosed is a position correction apparatus for a furnace extraction slab, characterized in that it comprises a.

In addition, the detection unit, located between the extraction door of the heating furnace and the feed roll, when the slab extracted by the extraction unit is abnormally seated on the upper end of the feed roll to correct the correct position of the slab A first sensor for sensing; And a second sensor located between the extraction door of the heating furnace and the transfer roll, the second sensor detecting a release of the defective position of the slab.

In addition, the sensing unit is located between the transfer roll and the extraction unit, the third detecting the defective position of the slab when the slab extracted by the extraction unit is abnormally seated on the lower end of the transfer roll Disclosed is a position calibration device for a furnace extraction slab, further comprising a sensor.

The controller may be configured to move the extractor forward by moving the extractor upward when the first sensor is detected when the extractor is down, and to retract the extractor. When the detection unit is detected by down the extraction unit to position the slab in the correct position of the feed roll to start the position correction apparatus of the furnace extraction slab.

In addition, the control unit, when the slab extracted by the extraction unit is detected by the third sensor immediately down the extraction unit to seat the slab in the correct position of the feed roll of the heating furnace extraction slab, characterized in that A position calibration device is disclosed.

The position correction apparatus of the heating extraction slab according to the present invention, by detecting the extracted position of the slab extracted from the heating furnace to automatically correct the position of the abnormal extraction slab, it is possible to prevent the twist of the extracted slab. Therefore, when the abnormal extraction slab is transferred to the post-process, the collision with the facility can be prevented in advance, and the operation stop can be prevented to increase the operation rate of the facility.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view schematically showing a position correcting apparatus for a furnace extraction slab according to a preferred embodiment of the present invention.
2 and 3 are views showing the operation of the position correction device of the furnace extraction slab according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view schematically showing a position correcting apparatus for a furnace extraction slab according to a preferred embodiment of the present invention.

As shown in FIG. 1, the apparatus 100 for correcting the position of the furnace extraction slab according to the preferred embodiment of the present invention includes an extraction unit 110, a detection unit 120, and a control unit 130.

The extraction unit 110 is installed at the extraction door 11 exit side of the heating furnace 10, and is configured to extract the slab 1 from which the heating is completed in the heating furnace 10. Here, since the extraction unit 110 can be understood by a known technique, detailed description thereof will be omitted. The heating furnace 10 used for heating the slab 1 is divided into three stages of a preheating zone, a heating zone, and a cracking zone. In each zone, a predetermined amount of fuel is continuously supplied to maintain a required temperature. The slab 1 charged in the heating furnace 10 is moved to the extraction point by operation of a pusher, etc., and is heated to have a sufficient temperature by the time of reaching the extraction point. The slab 1 extracted from the heating furnace 10 by the extraction unit 110 is seated on a feed roll 20 installed between the heating furnace 10 and the extraction unit 110 and then transferred to the subsequent process.

The detection unit 120 is positioned between the heating furnace 10 and the extraction unit 110, and is configured to detect a defective position of the slab 1 extracted by the extraction unit 110.

The detector 120 includes a first sensor 121, a second sensor 122, and a third sensor 123.

The first sensor 121 is a sensor that detects a poor position of the slab 1 when the slab 1 extracted by the extraction unit 110 is abnormally seated on the upper end of the feed roll 20. The first sensor 121 is located between the extraction door 11 of the heating furnace 10 and the feed roll 20, preferably located on the upper end side of the feed roll 20.

The second sensor 122 is a sensor positioned between the extraction door 11 of the heating furnace 10 and the feed roll 20 to detect the correct release of the slab 1. The second sensor 122 is preferably located at the upper end side of the feed roll 20 in parallel with the first sensor 121.

The third sensor 123 is a sensor that detects a defective position of the slab 1 when the slab 1 extracted by the extraction unit 110 is abnormally seated at the lower end of the feed roll 20. The third sensor 123 is located between the feed roll 20 and the extraction unit 110, preferably located on the lower end of the feed roll 20.

The first sensor 121, the second sensor 122, and the third sensor 123 are optical sensors, which include a light emitting device (not shown) for generating light, and a light receiving device (not shown) for detecting light generated from the light emitting device. And a light emitting element and a light receiving element are disposed to face each other before and after the conveying direction of the conveying roll 20. Here, since the structure and function of the optical sensor can be understood by known techniques, detailed description thereof will be omitted.

The controller 130 receives the signal detected by the detector 120 to determine whether the slab 1 is in a poor position, and when it is determined that the slab 1 is in poor position, the slab 1 is transferred to the feed roll 20. ) Is configured to control the extraction unit 110 to be seated at the correct position.

The controller 130 stops the feed roll 20 when the first sensor 121 is detected when the extraction unit 110 is down, and advances the extraction unit 110 to raise the slab 1. After the extraction unit 110 is reversed, and the second sensor 122 is detected when the extraction unit 110 moves backward, the extraction unit 110 is down to move the slab 1 to the correct position of the feed roll 20. Settle on In addition, if the slab 1 extracted by the extractor 110 is detected by the third sensor 123, the controller 130 immediately down the extractor 110 to move the slab 1 of the feed roll 20. Place it in place.

2 and 3 are views showing the operation of the position correction device of the furnace extraction slab according to a preferred embodiment of the present invention.

In the hot rolling process, the slabs 1 heated at a temperature suitable for rolling in the heating furnace 10 are extracted one at a time by the extraction unit 110 installed at the exit side of the heating furnace 10, and thus the slabs are extracted. (1) is seated on the transfer roll 20 by the extraction unit 110 and then transferred to a rolling mill (not shown).

At this time, as shown in Figure 2, when the extraction slab 1 is less out of the heating furnace 10, that is, when the slab 1 is located between the extraction door 11 and the transfer roll 20, The controller 130 receives the signals detected by the first and second sensors 121 and 122 to determine whether the slab 1 is inaccurately positioned, and determines that the slab 1 is inaccurate. ) Controls the extraction unit 110 to be seated in the correct position of the feed roll (20). For example, the controller 130 stops the feed roll 20 when the first sensor 121 is detected (ON) when the extraction unit 110 is down, as shown in FIG. 2 (a). As shown in b), the extraction unit 110 is advanced 200mm in one step to raise the slab 1, and as shown in FIG. 2 (c), the extraction unit 110 is reversed in two steps, and extraction is performed. When the second sensor 122 is detected at the time of reversal of the unit 110 (ON drawing), the extraction unit 110 is down, and the slab 1 is seated at the proper position of the feed roll 20, and then the feed roll 20 is rotated. Drive.

On the other hand, as shown in Figure 3, when the extraction slab (1) is more to come out of the heating furnace 10, that is, when the slab (1) further to come out to the lower end of the feed roll 20, the control unit If the slab 1 extracted by the extraction unit 110 is detected by the third sensor 123, the extraction unit 110 ignores the stroke that the extraction unit 110 has and the third sensor 123. By first applying the signal from the extraction unit 110 is immediately down to prevent the slab (1) from coming out by placing the slab 1 in the correct position of the transfer roll (20).

Therefore, the position calibration device 100 of the furnace extraction slab according to the present invention automatically detects the extracted position of the slab 1 extracted from the furnace 10 and automatically corrects the position of the abnormal extraction slab 1. By twisting, twisting of the extracted slab 1 can be prevented. Therefore, the abnormal extraction slab 1 can be prevented from colliding with the facility when it is transferred to the post-process, and the operation rate of the facility can be increased by preventing the operation interruption.

While the present invention has been described in connection with certain exemplary embodiments, it will be understood by those skilled in the art that various changes may be made without departing from the scope of the present invention. In addition, the description in parentheses in the description of the claims is intended to prevent obscuration of the description, and the scope of the claims of the claims should be construed to include all the items in parentheses.

1: slabs
10: heating furnace
11: extraction door
20: Feed roll
100: position correction device of the heating slab extraction slab
110:
120: detector
121: first sensor
122: second sensor
123: third sensor
130:

Claims (5)

In the device for correcting the position of the slab extracted from the furnace,
An extraction unit installed at an exit side of the heating furnace and extracting the slab heated in the heating furnace and seating the transfer slab;
A detection unit positioned between the heating furnace and the extraction unit and configured to detect a defective position of the slab extracted by the extraction unit; And
The control unit receives the signal detected by the detection unit to determine whether or not the correct position of the slab, and if it is determined that the correct position of the slab includes a control unit for controlling the extraction unit to be seated in the correct position of the feed roll. But
The sensing unit includes:
A first sensor positioned between the extraction door of the heating furnace and the conveying roll and detecting a defective position of the slab when the slab extracted by the extracting unit is abnormally seated on the upper end of the conveying roll; And
Located between the extraction door of the heating furnace and the conveying roll, and includes a second sensor for detecting the release of the correct position of the slab,
Wherein,
When the first sensor is detected when the extraction unit is down, the extraction unit is advanced to move up the slab and then the extraction unit is reversed, and when the second sensor is detected when the extraction unit is backward, the extraction unit is detected. Positioning apparatus of the heating slab extraction slab characterized in that the slab is seated on the fixed position of the feed roll by down.
delete The method of claim 1, wherein the detection unit,
Located between the transfer roll and the extraction unit, and further comprising a third sensor for detecting the incorrect position of the slab when the slab extracted by the extraction unit is abnormally seated on the lower end of the transfer roll Positioning device of the furnace extraction slab characterized in that.
delete The apparatus of claim 1,
The slab extracted by the extraction unit is detected by the third sensor immediately down the extraction unit to position the slab in the correct position of the feed roll, characterized in that for heating the slab extraction slab.

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