KR101685805B1 - Apparatus for improving mechanical property deviation of coil - Google Patents

Apparatus for improving mechanical property deviation of coil Download PDF

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Publication number
KR101685805B1
KR101685805B1 KR1020150057342A KR20150057342A KR101685805B1 KR 101685805 B1 KR101685805 B1 KR 101685805B1 KR 1020150057342 A KR1020150057342 A KR 1020150057342A KR 20150057342 A KR20150057342 A KR 20150057342A KR 101685805 B1 KR101685805 B1 KR 101685805B1
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KR
South Korea
Prior art keywords
coil
roller
support
heat generating
heating
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KR1020150057342A
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Korean (ko)
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KR20160126366A (en
Inventor
곽성열
유용현
임준석
황진동
Original Assignee
현대제철 주식회사
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Priority to KR1020150057342A priority Critical patent/KR101685805B1/en
Publication of KR20160126366A publication Critical patent/KR20160126366A/en
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Publication of KR101685805B1 publication Critical patent/KR101685805B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/28—Drums or other coil-holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product

Abstract

An invention for a coil material deviation reducing apparatus is disclosed. A coil material deviation reducing apparatus according to the present invention is characterized by comprising: a coil end tooth to which a coil is seated; a heat generating roller which is rotatably installed at a coil end tooth and generates heat at a set temperature; And a roller rotating device for rotating the roller.

Description

[0001] APPARATUS FOR IMPROVING MECHANICAL PROPERTY DEVIATION OF COIL [0002]

The present invention relates to a coil material deviation reducing apparatus, and more particularly, to a coil material deviation reducing apparatus for reducing a temperature deviation of a coil during cooling.

Typical steelmaking consists of a steelmaking process to produce molten iron, a steelmaking process to remove impurities from molten iron, a casting process to transform solid iron into solid, and a rolling process to make iron into steel or wire. The rolling process is a series of processes in which the slab is charged into a heating furnace, reheated to a temperature suitable for rolling, extracted, and subjected to a tensile rolling and a thickness rolling through a roughing mill and finally rolled into a product having a thickness desired by a customer in a finishing mill .

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Registration No. 1417314 (filed on Apr. 1, 2014, entitled "Fixed structure of winding coils for improving material deviation").

According to an embodiment of the present invention, there is provided a coil material deviation reducing apparatus capable of reducing a temperature deviation of a coil upon cooling.

An apparatus for reducing coil material deviation according to the present invention comprises: a coiled tooth to which a coil is seated; A heating roller rotatably mounted on the coiled tooth and generating heat at a set temperature; And a roller rotating device for rotating the coil mounted on the coiled tooth while rotating the heating roller.

The heating roller may include: a first heating part rotatably installed in a coil seating part of the coil stack; And a second heating unit disposed in parallel with the first heating unit and rotated by the roller rotating device at the same displacement as the first heating unit.

Further, the heat generating roller may include: a first roller in contact with one axial end portion of the coil and generating heat at a first predetermined temperature; And a second roller provided coaxially with the first roller and in contact with the other axial end of the coil to generate heat at a second predetermined temperature.

The heating roller may further include a third roller disposed between the first roller and the second roller and generating a first set temperature and a third set temperature lower than the second set temperature, .

The heat generating roller may include: a rotating body rotated by the roller rotating device; A heating element disposed around the rotating body; And a heat transfer cover coupled to cover the heat generating body and transferring the heat emitted from the heat generating body to the coil.

Further, a heater device positioned inside the inner portion of the coil; And a heater support for supporting the heater device.

The heater device may further include: a support plate having a curved surface corresponding to the inner shape of the coil; And a heating bar extending from the support plate in the axial direction of the coil.

Further, the heater support includes a base; A vertical support extending perpendicularly to the base; A horizontal support pivotally connected to the vertical support and connected to the heater device; And a support support member rotatably installed on the vertical support member and supporting the horizontal support member.

According to the coil material deviation reducing apparatus of the present invention, it is possible to cool or warm the coil at a desired temperature throughout the outer periphery while rotating the coil in a state of being placed on the coil end tooth using a heat generating roller, The cooling rate of the coil can be controlled by controlling the temperature.

According to the present invention, by controlling the temperatures of the plurality of heat generating rollers arranged in the axial direction of the coils to be different from each other, for example, when the coils are cooled naturally at room temperature, The axial temperature difference of the coil can be further reduced by applying the temperature of the heating roller in contact with the heating roller in contact with the axial middle portion of the coil.

Further, according to the present invention, by applying the heat generating roller for warming the outer coil portion of the coil and the heater device for warming the inner coil portion of the coil together, the temperature deviation between the inner and outer portions of the coil, Can be further reduced.

Further, according to the present invention, since the temperature difference between the outer and inner portions of the hot-rolled coil can be compensated by the heat-generating roller and the heater, local over cooling of the hot-rolled coil is prevented, A hot-rolled steel sheet having the above-

1 is a perspective view schematically showing a coil material deviation reducing apparatus according to an embodiment of the present invention.
2 is a front view schematically showing a coil material deviation reducing apparatus according to an embodiment of the present invention.
3 is a side view schematically showing a coil material deviation reducing apparatus according to an embodiment of the present invention.
4 is a perspective view schematically showing a coil end tooth, a heat generating roller, and a roller rotating device of a coil material deviation reducing apparatus according to an embodiment of the present invention.
5 is a perspective view schematically showing a heat generating roller of a coil material deviation reducing apparatus according to an embodiment of the present invention.
6 is a perspective view schematically showing a heater device and a heater support of a coil material deviation reducing apparatus according to an embodiment of the present invention.

Hereinafter, an embodiment of a coil material deviation reducing apparatus according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view schematically showing a coil material deviation reducing apparatus according to an embodiment of the present invention, FIG. 2 is a front view schematically showing a coil material deviation reducing apparatus according to an embodiment of the present invention, FIG. 3 Is a side view schematically showing a coil material deviation reducing apparatus according to an embodiment of the present invention.

FIG. 4 is a perspective view schematically showing a coil end tooth, a heat generating roller, and a roller rotating device of a coil material deviation reducing apparatus according to an embodiment of the present invention, FIG. 5 is a perspective view illustrating a coil material deviation reducing apparatus according to an embodiment of the present invention, FIG. 6 is a perspective view schematically showing a heater device and a heater support of a coil material deviation reducing apparatus according to an embodiment of the present invention. FIG.

1 to 3, a coil material deviation reducing apparatus 1 according to an embodiment of the present invention includes a coiled tooth 10, a heat generating roller 20, a roller rotating device 30, a heater device 40 ), And a heater support 50.

The coiled tooth 10 provides a pedestal on which the coil 2 can be seated. The heat generating roller 20 includes a heat generating element 23 and is rotatably installed in the coil end tooth 10. A plurality of heat generating rollers 20 are arranged in a plurality of rows and a plurality of rows and the coil 2 is in contact with a plurality of heat generating rollers 20 in a state in which the coils 2 are mounted on the coil teeth 10.

The roller rotating device 30 rotates the plurality of heat generating rollers 20 to the same displacement. The coil 2 mounted on the coiled tooth 10 rotates in conjunction with the rotation of the heat generating roller 20 in contact with the heat generating roller 20 when the heat generating roller 20 rotates. The coil 2 is rotated as described above so that the entire circumference thereof is brought into contact with the heat generating roller 20 uniformly and heat is uniformly transferred from the heat generating roller 20 to the entire circumference thereof.

The heater device 40 is a device for heating the inner portion of the coil 2, and is located inside the inner portion of the coil 2. The heater device 40 is disposed so as to extend in the axial direction of the coil 2 so as to realize uniform heat transfer throughout the axial direction of the coil 2, that is, in the width direction. The heater support 50 provides a support for supporting the heater device 40 in the air.

1, 2, and 4, a coiled crown 10 according to an embodiment of the present invention includes a left side tooth portion and a right side tooth portion that support both side portions of a coil 2, that is, a left side portion and a right side portion, . The left mounting portion and the right mounting portion are arranged symmetrically with respect to the coil 2 and the coil mounting portion 11 which is in contact with the coil 2 among the left mounting portion and the right mounting portion, And has a concave curved surface shape corresponding to the outer surface portion.

A plurality of heat generating rollers (20) are rotatably mounted on the coil receiving portion (11) of the coiled tooth (10). The coil 2 in a state of being placed on the coiled tooth 10 is rotatably supported by a plurality of heat generating rollers 20 substantially. The rotary drive shaft 31 and the gear assembly 33 of the roller rotating device 30 for rotating the heat generating roller 20 may be installed inside the coiled tooth 10.

The coiled cigarette 10 according to the embodiment of the present invention has a structure that supports the left and right portions of the coil 2 as described above. However, the coil 2 can be seated, But is not limited to a particular structure and shape, including well-known techniques, as long as it can provide a mounting surface.

1, 2, and 4, the heat generating roller 20 according to an embodiment of the present invention is disposed in a plurality of rows including a first row portion 20A and a second row portion 20B.

The first row portion 20A and the second row portion 20B are arranged at a predetermined interval in the circumferential direction of the coil 2 and arranged in the axial direction of the coil 2. The first row portion 20A and the second row portion 20B are rotated by the roller rotating device 30 at the same displacement. For example, while the heat generating rollers 20 constituting the first heat generating portion 20A are rotated one clockwise, the heat generating rollers 20 constituting the second heat generating portion 20B are rotated and rotated one clockwise.

Each of the plurality of rows includes a plurality of rows of rollers including a plurality of rollers including a plurality of rollers including a first roller portion 20A or a second roller portion 20B each including a first roller 21, Lt; / RTI > The first roller 21 contacts one axial end portion of the coil 2 and generates heat at a first set temperature. The second roller 25 is provided coaxially with the first roller 21 and abuts against the other axial end of the coil 2 and generates heat at a second set temperature. The third roller 26 is disposed between the first roller 21 and the second roller 25 and generates heat at a first set temperature and a third set temperature lower than the second set temperature.

The first roller 21 and the second roller 25 come into contact with both axial ends of the coil 2 and the third roller 26 comes into contact with the axial middle portion of the coil 2. [ When the coil 2 is naturally cooled at room temperature, the cooling rate at the axial end of the coil 2 is faster than the cooling rate at the middle of the coil 2, 20 by controlling the temperature of the first roller 21 and the second roller 25 to be higher than the temperature of the third roller 26 contacting the axial middle portion of the coil 2 It is possible to further reduce the temperature variation in the axial direction of the coil 2 upon cooling.

5, each of the heating rollers 20 arranged and temperature-controlled as described above, that is, each of the first roller 21, the second roller 25, and the third roller 26 includes a rotating body 22, A heat generating element 23, and a heat-transfer cover 24. The heat-

The rotating body 22 is a portion that receives the rotational power from the roller rotating device 30 and rotates. The rotating body 22 has a cylindrical shape and is positioned at the center of rotation of the heat generating roller 20 and connected to the rotary driving shaft 31 of the roller rotating device 30. [

The heat generating element 23 is installed around the rotating body 22. The heat generating element 23 is not limited to a particular structure and shape as long as the heat generating element 23 converts electrical energy into thermal energy. The heat generating element 23 may be disposed around the rotating body 22, such as a bar, a spiral, a film, can do. The electric wire for supplying electricity to each of the heating elements 23 may extend to the outside of the heat generating roller 20 through the inside of the rotary shaft 29 and may be connected to a power supply device outside the coiled tooth 10.

The heat transfer cover 24 covers the heating element 23 and is in contact with the outer periphery of the coil 2. [ The outer surface portion of the heat transfer cover 24 is formed concentrically with the rotating body 22 and the inner surface portion thereof has a structure corresponding to the shape and arrangement of the outer surface portion of the rotating body 22 and the heat emitting body 23. The rotating body 22, the heating element 23, and the heat transfer cover 24 are integrally connected and rotated together when the roller rotating device 30 is driven. The heat transfer cover 24 positioned between the heating element 23 and the coil 2 transfers the heat emitted from the heating element 23 to the coil 2.

5, the heating element 23 has a structure in which a plurality of rod-like shapes are disposed around the rotating body 22 at regular intervals. On the inner circumferential portion of the heat transfer cover 24 contacting with the rotating body 22 and the heat generating element 23, a heat generating element inserting space portion into which the heat generating element 23 can be inserted is hollowly formed to extend in the axial direction of the heat generating roller 20, The heat generating elements 23 are fitted and fixed on the plurality of insertion spaces, respectively, so as to be stably assembled and fixed at a predetermined position with mutually regular intervals.

Referring to FIG. 4, a roller rotating device 30 according to an embodiment of the present invention includes a rotating drive shaft 31, a motor 32, and a gear assembly 33.

The rotary drive shaft 31 is a part serving as a power transmitting shaft for transmitting the rotational force of the motor 32 to the heat generating roller 20 and is connected to the rotational center of each row of the heat generating roller 20 arranged coaxially . For example, a plurality of heat generating rollers 20 constituting the first row 20A are sequentially inserted into one rotary shaft 29, and the rotary driving shaft 31 is connected to the end of the rotary shaft 29 . The motor 32 generates rotational power and transmits it to the rotary drive shaft 31. [

The gear assembly 33 is an element for transmitting the rotational power generated by the motor 32 to the plurality of rotary driving shafts 31 so that the plurality of heat generating rollers 20 rows can be rotated at the same displacement. The gear assembly 33 according to an embodiment of the present invention is a gear assembly that transmits power from an odd number of rows of the plurality of heat generating rollers 20 (for example, from the upper side to the first row portion 20A, the third row portion, 1 power transmitting portion and a second power transmitting portion for transmitting power from an even row (for example, from the upper side to the second row portion 20B, the fourth row portion, etc.) are dispersed in front of and behind the heat generating roller 20 .

The first power transmission portion includes a main gear connected to the rotary shaft 29 connected to the first rotary portion 20A and a rotary drive shaft 31 connected to the rotary shaft 29 of the third rotary portion, . When the main gear coaxially positioned with the rotary shaft 29 of the first rotary part 20A rotates clockwise, the sub gear meshed with the sub gear is rotated in the counterclockwise direction, The main gear is rotated clockwise. By the above-described operation, the first columnar section 20A and the third columnar section can be rotated at the same displacement, that is, at the same speed and direction.

The gear assembly 33 according to the embodiment of the present invention simultaneously rotates the plurality of rotary shafts 29 with one motor 32 by the above structure and operation, It is not limited to a particular structure and shape as long as it can transmit the rotational power of the motor 32 to the rotary drive shaft 31 using a gear member.

The rotary drive shaft 31 and the gear assembly 33 can be installed using the internal space of the coiled tooth 10. At this time, the rotary drive shaft 31 and the gear assembly 33 are covered by the outer surface portion of the coiled tooth 10 to be protected from the external working environment and foreign matter. The motor 32 is installed so as to be exposed to the outside of the coil end tooth 10 so that it can be easily attached and detached depending on whether it is used or not.

Referring to FIG. 6, a heater device 40 according to an embodiment of the present invention includes a support plate 41, a heating bar 42, and a safety fence 43.

The support plate 41 is a member for providing a frame supporting the heat generating rod 42. The support plate 41 is formed so as to extend in the axial direction of the coil 2 and has a curved surface corresponding to the inner shape of the coil 2.

The heating rod 42 is installed on the support plate 41 so as to extend in the axial direction of the coil 2. In an embodiment of the present invention, the heat generating rods 42 have a structure in which a plurality of rods are arranged on the support plate 41 so as to be spaced apart from each other. As the support plate 41 has a curved surface corresponding to the inner winding portion of the coil 2, the gap between the heating coil 42 and the inner winding portion of the coil 2 is constant regardless of the position of the heating coil 42 on the support plate 41.

The heat generating rod 42 according to the present invention is not limited to a specific structure and shape as long as it can convert electric energy into thermal energy. The heat generating member 42 may be a coil, a spiral, a film, Or on one side facing the inner circumferential portion of the housing 2.

The safety fence 43 is provided to prevent breakage or safety accident caused by direct contact or collision of the heat generating rod 42 with the coil 2. The safety fence 43 is a curved surface facing the inner curved portion of the coil 2, It is installed on the float. The safety fence 43 can be applied to various shapes such as a sash, a wire mesh and the like, and the heating rod 42 is positioned inside the safety fence 43 and is prevented from direct contact with the coil 2. [

Referring to FIG. 6, a heater support 50 according to an embodiment of the present invention includes a base 51, a vertical support 52, a horizontal support 54, and a support support 56.

The base 51 is a portion for supporting the load of the heater device 40 and the vertical support 52, the horizontal support 54, and the support support 56. The base 51 may be fixedly mounted on the coiled tooth 10 and may include a wheel member such that the heater unit 40 can be easily moved as shown in FIG. Or may be separately formed.

The vertical support 52 is installed vertically on the upper portion of the base 51. A horizontal support 54 is connected to the upper end of the vertical support 52. The vertical support 52 is provided with a height adjuster 53 for adjusting the length of the coil 2 in accordance with the position of the inner coil. The vertical support 52 according to an embodiment of the present invention is divided into an upper support portion and a lower support portion. The height adjustment portion 53 includes a plurality of through hole portions formed on the upper support portion and the lower support portion, And a fastening member which is installed to penetrate through.

The upper supporting portion can be fixed to the lower supporting object by fastening the fastening member so as to continuously penetrate the through hole portion formed in the upper support portion and the through hole portion formed in the lower support portion, It is possible to adjust the height of the upper support by adjusting the height of the upper support.

The horizontal support 54 is vertically rotatably connected to the upper end of the vertical support 52 and connected to the heater device 40. The vertical support 52 is positioned to be spaced apart from the axial end of the coil 2 and the horizontal support 54 is pivoted vertically with the horizontal support 54 extending horizontally upwardly as shown in FIG. And is positioned closer to the coil 2 side from the support base 52.

When the heater device 40 is not used, the heater device 40 can be folded down to the base 51 side by rotating the horizontal support pedestal 54 downward toward the vertical support 52 side. At this time, the heater device 40 is stably supported in the vertical direction by the vertical support 52 and positioned closer to the base 51, so that the center of gravity of the heater device 40 and the heater support 50 is more stabilized The storage and movement of the heater device 40 can be made more stable and space-efficient.

The support support 56 supports the horizontal support 54 with respect to the vertical support 52. The support support 56 is installed on the vertical support 52 below the horizontal support 54, and is vertically rotatable. When the free end of the support pedestal 56 is turned upward, it is caught by the latching portion 55 protruding from the lower portion of the horizontal support pedestal 54 as shown in FIG. The horizontal support 54 is supported by the support support 56 so that the downward rotation thereof is restrained. When the support support 56 is separated from the engagement portion 55, the horizontal support 54 is rotated downward toward the base 51 .

The heater unit 40 is disposed on one side of the base 51 with respect to the base 51. The weight unit 57 on the opposite side of the base unit 51 can compensate for the center of gravity due to the heater unit 40. [

According to the coil material deviation reducing apparatus 1 of the present invention having the above configuration, the coil 2 mounted on the coiled tooth 10 is rotated by the heat generating roller 20, And the cooling rate of the coil 2 can be controlled by controlling the heat generation temperature of the heat generating roller 20. [

According to the present invention, by controlling the temperatures of the plurality of heat generating rollers 20 arranged in the axial direction of the coil 2 to be different from each other, for example, when the coil 2 is cooled naturally at room temperature, The temperature of the heat generating roller 20 contacting the axial end of the coil 2 is relatively higher than the temperature of the heat generating roller 20 contacting the axial middle portion of the coil 2, The axial temperature deviation can be further reduced.

According to the present invention, by applying the heat generating roller 20 for heating the outer peripheral portion of the coil 2 and the heater device 40 for heating the inner peripheral portion of the coil 2 together, The temperature deviation between the winding portion and the outer winding portion, that is, the longitudinal temperature deviation of the coil 2, can be further reduced.

According to the present invention, since the temperature difference between the outer and inner portions of the hot-rolled coil 2 can be compensated by the heat-generating roller 20 and the heater 40, the local overheating of the hot- ), It is possible to manufacture a hot-rolled steel sheet having a uniform material throughout.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

1: coil material deviation reduction device 2: coil
10: coil end tooth 11: coil seat part
20: heat generating roller 20A: first heating portion
20B: second column portion 21: first roller
22: rotating body 23: heating element
24: heat transfer cover 25: second roller
26: third roller 30: roller rotating device
31: rotating drive shaft 32: motor
33: gear assembly 40: heater device
41: support plate 42:
43: safety fence 50: heater support
51: base 52: vertical support
53: height adjuster 54: horizontal support
55: latching portion 56:
57: Weights

Claims (8)

A coiled tooth to which the coil is seated;
A heating roller rotatably mounted on the coiled tooth and generating heat at a set temperature; And
And a roller rotating device for rotating the coil placed on the coiled tooth while rotating the heating roller,
The heat generating roller includes:
A rotating body rotated by the roller rotating device;
A heating element disposed around the rotating body; And
And a heat transfer cover coupled to cover the heating element and transferring the heat emitted from the heating element to the coil.
The method according to claim 1,
The heat generating roller includes:
A first heating part rotatably installed on a coil receiving part of the coil mount; And
And a second heating unit disposed in parallel with the first heating unit and rotated by the roller rotating device at the same displacement as the first heating unit.
3. The method according to claim 1 or 2,
The heat generating roller includes:
A first roller in contact with one axial end portion of the coil and generating heat at a first set temperature; And
And a second roller provided coaxially with the first roller and in contact with the other axial end of the coil to generate heat at a second predetermined temperature.
The method of claim 3,
The heat generating roller includes:
And a third roller disposed between the first roller and the second roller and generating a first set temperature and a third set temperature lower than the second set temperature, Abatement device.
delete The method according to claim 1,
A heater disposed inside the inner portion of the coil; And
And a heater support for supporting the heater device.
The method according to claim 6,
The heater device includes:
A support plate having a curved surface corresponding to the inner shape of the coil; And
And a heating bar extending from the support plate in the axial direction of the coil.
The method according to claim 6,
The heater support includes:
Base;
A vertical support extending perpendicularly to the base;
A horizontal support pivotally connected to the vertical support and connected to the heater device; And
And a support support member rotatably installed on the vertical support member and supporting the horizontal support member.
KR1020150057342A 2015-04-23 2015-04-23 Apparatus for improving mechanical property deviation of coil KR101685805B1 (en)

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JP2780635B2 (en) * 1994-03-29 1998-07-30 住友金属工業株式会社 Scrap coil processing equipment
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