KR101869430B1 - Strip tilt correction device of continuous annealing furnace - Google Patents

Strip tilt correction device of continuous annealing furnace Download PDF

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Publication number
KR101869430B1
KR101869430B1 KR1020160174308A KR20160174308A KR101869430B1 KR 101869430 B1 KR101869430 B1 KR 101869430B1 KR 1020160174308 A KR1020160174308 A KR 1020160174308A KR 20160174308 A KR20160174308 A KR 20160174308A KR 101869430 B1 KR101869430 B1 KR 101869430B1
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South Korea
Prior art keywords
strip
roll
tilt
calibrating
calibrating roll
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KR1020160174308A
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Korean (ko)
Inventor
박석달
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주식회사 포스코
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5735—Details
    • C21D9/5737—Rolls; Drums; Roll arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/142—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving along a vertical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/40—Arrangements of controlling or monitoring devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F27D5/005—Supports specially adapted for holding elongated articles in an upright position, e.g. sparking plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • F27B2009/124—Cooling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

Disclosed is a strip tilt correction device of a continuous annealing furnace. The strip tilt correction device of a continuous annealing furnace according to an embodiment of the present invention comprises: a correction roll arranged in a lower portion of a transferred strip; and an inclination adjusting device supporting the correction roll and adjusting the height of at least one side between both ends of the correction roll so as to adjust an inclination of the correction roll.

Description

TECHNICAL FIELD [0001] The present invention relates to a stripping correction apparatus for continuously annealing a strip,

The present invention relates to a strip tilt correcting apparatus for a continuous annealing furnace capable of correcting a deviation of a strip moving inside a continuous annealing furnace.

Cold-rolled strips (such as stainless steel plates) are not cured in the rolling process and therefore are not suitable for making products requiring processability. Therefore, the rolled strip is required to be improved in workability by lowering its hardness through annealing heat treatment.

The continuous annealing furnace is a device for annealing the strip while continuously passing the heating portion and the cooling portion filled with hydrogen. Using this, heat treatment can be performed in a reducing atmosphere, so oxidation of the surface of the strip can be prevented and gloss can be maintained during the heat treatment.

A typical continuous annealing furnace is provided with an inlet portion where the strip enters, a heating portion which heats the vertically rising strip after entering the inlet portion, a cooling portion which cools the strip roughed by the heating portion, a rising duct portion provided on the cooling portion, A return duct portion extending vertically downward from the upper duct portion for lowering the strip, and an outlet portion provided below the return duct portion for discharging the heat-treated strip, do.

In this continuous annealing furnace, the strip that has entered the inlet portion vertically rises by about 50 m while passing through the heating portion, the cooling portion, and the rising duct portion, and there may be local defective or deformed strips. It is possible to cause a phenomenon of being tilted to one side in the course of changing the direction. If the strip is sagged, the strip edge may be damaged or the strip may be broken, resulting in production disruption.

An embodiment of the present invention is to provide an apparatus for correcting strike-through of a continuous annealing furnace capable of correcting a strike of a strip moving in a continuous annealing furnace.

According to one aspect of the present invention, a calibrating roll disposed at the bottom of a strip to be conveyed; And a tilt adjustment device for supporting the calibration roll and adjusting the height of at least one of both ends of the calibration roll to adjust the tilt of the calibration roll.

 The caliper roll may have a curved outer surface whose outer diameter gradually decreases from the intermediate portion between both ends toward both ends, and the outer surface of the caliper roll may have a convex curved surface.

The calibrating roll may include a cover member coupled to cover the outer surface thereof to protect the surface of the strip.

The cover member may be provided with a plurality of fluffs on the outer surface thereof and a zipper may be installed on at least one side of the caliper roll in the longitudinal direction so as to be replaceable.

Wherein the strip tilt correction device comprises: a moving member that supports the tilt adjustment device and is supported movably in a feeding direction of the strip; A transfer device for supporting the movable member and transferring the movable member in a lateral direction; A supporting member for supporting a lower portion of the conveying device; A lifting device for lifting the support member; A plurality of leaning sensors for detecting leaning of the conveyed strip; And a control unit for controlling operations of the conveyance device, the tilt adjustment device, and the lift device based on detection information of the plurality of tilt detection sensors.

The inclination adjusting device may further include: a rotation supporting part for rotatably supporting one end of the calibrating roll in a vertical direction; A tilt adjusting unit for adjusting the tilt of the calibrating roll by elevating the other end of the calibrating roll; And an inclination sensor for sensing the inclination of the calibrating roll.

The conveying device includes a plurality of sliding frames installed parallel to each other on an upper portion of the supporting member and extending long in a strip conveying direction and slidably supporting the moving member; A driven sprocket provided at both ends of the sliding frame; A transfer chain coupled to the shifting member in a state of being engaged with the driven sprocket on both sides of the sliding frame; A drive motor that rotates at least one of the driven sprockets to move the movable member; And a position sensing sensor for sensing a moving position of the moving member.

The support member may be provided in the form of a flat plate, and the lifting lug may include a plurality of hydraulic cylinders installed at a lower portion of the support member to lift the support member.

The plurality of leaning sensors include a pair of first leaning sensors for detecting a widthwise movement of both edge portions of the strip at a position before the strip enters the upper duct portion of the continuous annealing furnace; And a pair of second sensors for sensing the widthwise movement of both edge portions of the strip at a position after the strip passes the upper duct portion of the continuous annealing furnace.

The apparatus for correcting a strike point in a continuous annealing furnace according to an embodiment of the present invention can adjust the position and the inclination of the calibrating roll toward the side where the position and direction of the strip are detected by the leaning sensor, The strike of the strip can be quickly corrected.

1 is a perspective view showing the overall structure of a continuous annealing furnace to which the present invention is applied.
2 is a perspective view of a strip annealing apparatus for continuous annealing furnace according to an embodiment of the present invention.
3 is a perspective view showing a configuration of a calibrating roll in an apparatus for calibrating a strip in a continuous annealing furnace according to an embodiment of the present invention.
FIG. 4 is a side view of a continuous strip annealing strip calibrating apparatus according to an embodiment of the present invention, in which the calibrating roll is separated from the strip at an initial position.
FIG. 5 is a side view of a continuous strip annealing apparatus according to an embodiment of the present invention, showing a state in which a calibrating roll is moved toward a return duct portion and is in contact with a strip.
6 is a side view of a continuous strip annealing strip calibrating apparatus according to an embodiment of the present invention, in which the calibrating roll is moved toward the steering roll and is in contact with the strip.
7 is a control block diagram of a continuous annealing furnace strip tilting apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided to fully convey the spirit of the present invention to a person having ordinary skill in the art to which the present invention belongs, and the present invention is not limited thereto, but may be embodied in other forms. In order to clarify the present invention, it is possible to omit the parts of the drawings that are not related to the description, and the size of the components may be slightly exaggerated to facilitate understanding.

1 is a perspective view showing the overall structure of a continuous annealing furnace according to an embodiment of the present invention.

1, the continuous annealing furnace includes an inlet 10 into which the strip 1 enters, a heating portion 20 heating the strip 1 vertically rising after entering the inlet 10, A cooling duct 30 for cooling the strip 1 passing through the rising duct portion 20 and a rising duct portion 40 provided on the cooling portion 30 and a rising duct portion 40 for switching the moving direction of the strip 1, A return duct portion 60 extending downward from the upper end duct portion 50 for vertically lowering the strip 1 and provided vertically, a heat-treated strip 1 And an outlet portion 70 provided below the return duct portion 60 for discharging the exhaust gas.

The heating unit 20, the cooling unit 30, the rising duct unit 40, the upper duct unit 50 and the return duct unit 60 are connected in a tunnel shape so that the strip 1 can pass continuously. The inside of the continuous annealing furnace is filled with hydrogen (H2) forming a reducing heat treatment atmosphere, and the inlet portion 10 and the outlet portion 70 are sealed to prevent leakage of hydrogen and to prevent inflow of outside air.

The inlet section 10 includes a pair of inlet sealing rolls 11 for sealing the inlet while guiding the entry of the strip 1 and a strip 1 entering the inlet duct 12 through the inlet sealing roll 11. The inlet 1, And an inlet tension regulating roll 13 for regulating the tension of the strip 1 while converting the progress of the strip 1 in the upward direction.

The heating unit 20 is vertically installed on the upper side of the inlet unit 10 so that the heating unit 20 can be heated in a state where the strip 1 rising through the inlet unit 10 is housed therein. The heating unit 20 includes a cylindrical muffle 21 and a muffle 21 through which the strip 1 is passed in the inside of the muffle 21, (Not shown) such as a burner provided on the furnace body 22 for heating the heating space, and an external cylindrical furnace 22 for forming a heating space 23 on the furnace body 22.

The lower part of the muffle 21 is hermetically connected to the inlet duct 12 and the upper part of the muffle 21 is hermetically connected to the duct 31 of the cooling part 30 and filled with hydrogen to create a reducing atmosphere therein. That is, the inner space of the muffle 21 communicates with the inner space of the inlet portion 10 and the cooling portion 30, and is completely separated from the outer heating space 23 for blocking hydrogen leakage.

The heating section 20 can heat the inside of the muffle 21 through which the strip 1 passes by heating the heating section 20 to the heating temperature for annealing and the inner space of the muffle 21 filled with hydrogen is heated (23), the strip (1) rising in the reducing atmosphere can be heated.

The cooling section 30 may be provided in the form of a duct that continuously connects the heating section 20 and the rising duct section 40 and may include a plurality of cooling devices 32 for cooling the atmosphere gas therein have. Each of the cooling devices 32 may include a circulating fan for circulating the internal gas, a cooling heat exchanger for cooling the gas circulated by the circulating fan, and a cooling liquid supply means for supplying the cooling liquid to the cooling heat exchanger. The strip 1 heated to about 1000 캜 or more in the heating section 20 can be cooled to about 80 to 100 캜 while passing through the cooling section 30.

The upper duct portion 50 connects the upper end of the riser duct portion 40 and the upper end of the return duct portion 60. A steering roller 51 is provided on the inner side of the portion where the rising duct portion 40 and the upper duct portion 50 meet to support the strip 1 while changing the moving direction of the strip 1 transversely, An upper support roll 52 for supporting the strip 1 may be installed on the inner side of the portion where the return duct portion 50 and the return duct portion 60 meet, while the moving direction of the strip 1 is downward.

The outlet unit 70 includes a pair of outlet closing rolls 71 for sealing the outlet while guiding the discharge of the strip 1 to the outlet at the lower end of the return duct unit 60 and an outlet closing roll 71, And an outlet tension regulating roll 72 for regulating the tension of the strip 1 while shifting the progress of the moving strip 1 in the transverse direction.

A strip tilt correcting apparatus 100 is installed in the upper duct portion 50 of the continuous annealing furnace to detect the tipping of the strip 1 to be fed and correct the tipping of the strip 1. [ This is because the strip 1 to be fed may deviate to one side while changing the feeding direction through the steering roll 51 and the upper supporting roll 52 in the upper duct portion 50.

2 and 4, the strip tilt correcting apparatus 100 includes a calibrating roll 110 disposed at a lower portion of a strip 1 transversely conveyed in an upper duct portion 50, a calibrating roll 110, (120) for adjusting the height of at least one of both ends of the calibrating roll (110) to adjust the inclination of the calibrating roll (110) A conveying device 140 for supporting the moving member 130 and conveying the moving member 130 in the lateral direction, a supporting member 140 for supporting the lower part of the conveying device 140, A lifting device 160 for lifting and lowering the supporting member 150 and a plurality of leaning sensors 170 and 180 for detecting the leaning of the strip 1 to be transported.

As shown in Figs. 2 and 3, the calibrating roll 110 may be formed in a curved surface shape whose outer diameter gradually decreases from the intermediate portion between both ends toward the both ends, and whose outer surface is convex. It is like a long rugby ball. In addition, the calibration roll 110 includes a cover member 111 provided in a shape corresponding to the outer surface thereof and coupled to cover the outer surface.

The cover member 111 is provided with a plurality of fluffs on its outer surface to prevent damage to the surface of the strip 1 when it comes into contact with the surface of the strip 1. [ In addition, the cover member 111 has a predetermined frictional force, so that it is possible to realize smooth correction of the strip 1 when it is tilted through contact with the strip 1. One side of the cover member 111 is provided with a zipper 112 which can be separated in the longitudinal direction of the calibrating roll 110 so as to be replaceable.

 2, the inclination adjusting device 120 includes a rotation support portion 121 (see FIG. 2) provided on one side of the moving member 130 in the form of a flat plate and supporting one end of the calibrating roll 110 so as to be rotatable in the vertical direction, A slope adjusting unit 122 installed on the other side of the moving member 130 on the opposite side of the rotation supporting unit 121 and elevating the other end of the adjusting roll 110 to adjust the inclination of the adjusting roll 110, And a tilt sensor 123 for detecting the tilt of the calibrating roll 110 by measuring the height of the end of the calibrating roll 110 on which the calibrating unit 122 is installed.

The rotation support portion 121 includes a support shaft 121a spaced apart from the movable member 130 and a bearing 121b for rotatably supporting one end of the calibration roll 110 in a state of being coupled to the support shaft 121a ). Therefore, one end of the calibrating roll 110 can rotate up and down about the support shaft 121a without changing the height.

The inclination adjusting portion 122 includes a bearing 122a for rotatably supporting an end of the calibrating roll 110 and a bearing 122a for supporting the bearing 122a while the lower portion thereof is fixed on the moving member 130, And a hydraulic cylinder 122b for moving the position of the hydraulic cylinder 122b up and down.

The inclination adjusting unit 122 can adjust the inclination of the calibrating roll 110 in such a manner that one end of the calibrating roll 110 is raised or lowered higher or lower than the rotation supporting unit 121. This is due to the nature of the strip 1 moving up the calibrating roll 110 due to the shape of the calibrating roll 110 when the calibrating roll 110 rotates in contact with the strip 1, So that it is possible to correct the deviation in the width direction. For example, when the strip 1 is to be moved toward the slope adjusting portion 122, the slope of the slope adjusting portion 122 is adjusted so that the slope of the slope adjusting portion 122 is higher, The inclination of the calibrating roll 110 can be adjusted so that the height of the side of the inclination adjusting part 122 is lower than the side of the rotation supporting part 121. [

The support member 150 may be provided in a wide flat plate shape to support the transfer device 140 on the upper portion thereof and the elevating device 160 for adjusting the height of the support member 150 may be provided on the lower portion of the support member 150 And a plurality of hydraulic cylinders installed in the hydraulic cylinders. The lower portion of the plurality of hydraulic cylinders can be fixed to the lower inner surface of the riser duct portion 50.

As shown in FIG. 4, the elevating device 160 can lower the supporting member 150 so that the calibrating roll 110 is separated from the lower surface of the strip 1, and as shown in FIGS. 5 and 6, , The support member 150 can be raised so that the calibration roll 110 maintains contact with the lower surface of the strip 1 in a state in which the strip 1 is slightly pushed up.

2 and 4, a transfer device 140 for moving the movable member 130 in the transverse direction (strip transport direction) is installed parallel to the upper side of the support member 150, A plurality of driven sprockets 142 and 143 respectively provided on both ends of the two sliding frames 141 and a sliding frame 141 The two transfer chains 145 and the driven sprockets 142 and 143 coupled to the movable member 130 are rotated to move the movable member 130 while being held by the two driven sprockets 142 and 143 at both ends, And a driving motor 146.

The two driven sprockets 142 located on the upper support roll 52 side can be connected to the drive motor 146 with the shaft 147 being connected by the shaft 147 to rotate together. The two driven brackets 143 located on the steering roll 51 side can also be connected by the shaft 148 to rotate together.

The conveying device 140 moves the moving member 130 connected through the conveying chain 145 to the upper support roll 52 as shown in FIG. 5 by rotating the driven sprockets 142 and 143 by the operation of the driving motor 146 As shown in Fig. 6, or in a direction close to the steering roll 51 as shown in Fig.

The transfer device 140 may include a plurality of position sensors 149a, 149b, and 149c that sense the movement position of the movable member 130. [ A plurality of position sensing sensors 149a, 149b and 149c arranged to be spaced apart from each other in the moving direction can sense the moving position of the moving member 130 by sensing the sensing portion 132 of the moving member 130. [ Here, an example of the position detection sensor is shown, but the shape of the position detection sensor is not limited thereto. The position detection sensor may be a laser sensor or an infrared sensor that detects a distance through a reflection signal after sending a signal to a fixture positioned in the movement direction.

2 and 4, the plurality of leaning sensors 170 and 180 detecting the leaning of the strip 1 are disposed at a position before the strip 1 enters the upper duct portion 50 A pair of first detection sensors 170 for detecting the widthwise movement of both edge portions of the strip 1 at a predetermined position after the strip 1 has passed through the upper duct portion 50, And a pair of second detection sensors 180 sensing the widthwise movement of both edge portions of the strip 1 at a position where the strip 1 is positioned after the second detection sensor 52. Each of the sensors 170 and 180 can detect the widthwise displacement of the edge of the strip 1 by arranging a plurality of light emitting units and a plurality of light receiving units so that the edge of the strip is positioned therebetween.

7 is a block diagram for controlling the operation of the strip tilting apparatus according to the present embodiment. As shown in the figure, the control unit 190 receives the signals of the plurality of leaning sensors 170 and 180 to determine whether the strip 1 is leaning or leaning. Based on the information, The control device 120, and the elevation device 160. [0035] The control unit 190 can control the transfer device 140 by operating the drive motor 146 while determining the position of the movable member 130 based on the detection of the position sensing sensors 149a, 149b, and 149c. The controller 190 may control the inclination adjusting device 120 while determining the inclination of the calibrating roll 110 based on the detection of the inclination detecting sensor 123.

The operation of the strip tilt correcting apparatus will now be described with reference to Figs.

4, when the first and second leaning sensors 170 and 180 do not detect the strike of the strip 1, the control unit 190 determines that the calibration roll 110 is in contact with the strip 1, The slope adjusting device 120 and the elevating device 160 so as to be positioned at an initial position spaced apart from the conveying device 1. [ That is, when there is no deviation of the strip 1, the tilt correcting apparatus 100 does not operate.

5, when the strike of the strip 1 occurs at the upper side of the redundant duct portion 60 (the lower side of the upper support roll 52), the second leaning sensor 180 detects the strike of the strip 1 The control unit 190 controls the conveying unit 140 to move toward the upper support roll 52 and lifts the elevating unit 160 so that the calibrating roll 110 rises to move the strip 1, Support the lower surface. The control unit 190 determines whether the strip 1 is deviated in the width direction based on the sensing information of the pair of second detection sensors 180 and controls the inclination adjusting unit 120 to control the calibration roll 110 ). The inclination of the calibration roll 110 is adjusted so that the side to which the strip 1 is to be moved is relatively higher. Once the position and tilt of the calibration roll 110 are adjusted, the tipping of the strip 1 can be quickly corrected.

6, when the strike of the strip 1 occurs at the upper side (lower side of the steering roll 51) of the riser duct portion 40, the first leaning sensor 170 detects the leaning of the strip 1 The control unit 190 controls the conveying unit 140 to move toward the steering roll 51 and lifts the elevating unit 160 so that the calibrating roll 110 is lifted to lower the strip 1 . The control unit 190 determines whether the strip 1 is deviated in the width direction based on the detection information of the pair of first detection sensors 170 and controls the inclination adjusting unit 120 ). At this time, the inclination of the calibration roll 110 is adjusted so that the side to which the strip 1 is to be moved is relatively higher. Once the position and inclination of the calibration roll 110 are adjusted, the strike of the strip 1 can be quickly corrected.

As described above, in the strip tilt correction apparatus 100 according to the present embodiment, when the tilt position and direction of the strip 1 are detected by the tilt sensors 170 and 180, the position of the tilt roll 110 And the inclination can be adjusted, so that the deviation of the strip 1 can be quickly corrected.

10: inlet portion, 20: heating portion,
30: cooling section, 40: rising duct section,
50: upper duct portion, 60: return duct portion,
70: outlet portion, 100: strip tilt correcting device,
110: calibration roll, 120: tilt adjustment device,
130: moving member, 140: transfer device,
150: support member, 160: lifting device,
170: first tilt detection sensor, 180: second tilt detection sensor,
190: Control section.

Claims (9)

A calibrating roll disposed at the bottom of the conveyed strip; And
And a tilt adjusting device for supporting the calibrating roll and adjusting the height of at least one of both ends of the calibrating roll to adjust the inclination of the calibrating roll,
Wherein the calibrating roll is provided with a curved surface whose outer surface is convex, the outer diameter gradually decreasing from the intermediate portion between both ends toward both ends, and the strip calibrating apparatus of the continuous annealing furnace. delete The method according to claim 1,
Wherein the calibrating roll includes a cover member coupled to cover the outer surface thereof to protect the surface of the strip. The method of claim 3,
Wherein the cover member is provided with a plurality of fluffs on the outer surface thereof and is provided with a zipper that can be separated in the longitudinal direction of the calibrating roll at least on one side so as to be replaceable. 5. The method of claim 4,
A moving member which supports the tilt adjusting device and is movably supported in a feeding direction of the strip;
A transfer device for supporting the movable member and transferring the movable member in a lateral direction;
A supporting member for supporting a lower portion of the conveying device;
A lifting device for lifting the support member;
A plurality of leaning sensors for detecting leaning of the conveyed strip; And
And a control unit for controlling operations of the conveyance device, the tilt adjustment device, and the lift device based on detection information of the plurality of tilt detection sensors. 6. The method of claim 5,
The inclination adjusting device comprises:
A rotation support portion for rotatably supporting one end of the calibrating roll in a vertical direction;
A tilt adjusting unit for adjusting the tilt of the calibrating roll by elevating the other end of the calibrating roll; And
And a tilt sensor for detecting a tilt of the calibrating roll. 6. The method of claim 5,
The transfer device
A plurality of sliding frames provided parallel to each other on an upper portion of the supporting member and elongated in a strip feeding direction and slidably supporting the moving member;
A driven sprocket provided at both ends of the sliding frame;
A transfer chain coupled to the shifting member in a state of being engaged with the driven sprocket on both sides of the sliding frame;
A drive motor that rotates at least one of the driven sprockets to move the movable member; And
And a position sensor for sensing a moving position of the moving member. 6. The method of claim 5,
Wherein the support member is provided in a flat plate shape,
Wherein the lift device includes a plurality of hydraulic cylinders installed at a lower portion of the support member to elevate the support member. 6. The method of claim 5,
Wherein the plurality of lean detection sensors comprise:
A pair of first sensors for sensing the widthwise movement of the edge portions of the strip at a position before the strip enters the upper duct portion of the continuous annealing furnace; And
And a pair of second sensors for detecting the widthwise movement of both edge portions of the strip at a position after the strip passes the upper duct portion of the continuous annealing furnace.
KR1020160174308A 2016-12-20 2016-12-20 Strip tilt correction device of continuous annealing furnace KR101869430B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200201122Y1 (en) * 2000-05-31 2000-11-01 포항종합제철주식회사 Device for rolling dance roll of bright annealing furnace
KR100544670B1 (en) * 2001-07-16 2006-01-23 주식회사 포스코 Device for revising the position of strip into the furnace
KR100923469B1 (en) * 2002-07-11 2009-10-27 주식회사 포스코 Device for passing strip in bright annealing furnace
KR100962975B1 (en) * 2007-12-20 2010-06-11 주식회사 포스코 Strip correction system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200201122Y1 (en) * 2000-05-31 2000-11-01 포항종합제철주식회사 Device for rolling dance roll of bright annealing furnace
KR100544670B1 (en) * 2001-07-16 2006-01-23 주식회사 포스코 Device for revising the position of strip into the furnace
KR100923469B1 (en) * 2002-07-11 2009-10-27 주식회사 포스코 Device for passing strip in bright annealing furnace
KR100962975B1 (en) * 2007-12-20 2010-06-11 주식회사 포스코 Strip correction system

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