EP1935521A1 - Installation de laminage à chaud d'une plaque en acier et procédé de laminage à chaud - Google Patents

Installation de laminage à chaud d'une plaque en acier et procédé de laminage à chaud Download PDF

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Publication number
EP1935521A1
EP1935521A1 EP06783166A EP06783166A EP1935521A1 EP 1935521 A1 EP1935521 A1 EP 1935521A1 EP 06783166 A EP06783166 A EP 06783166A EP 06783166 A EP06783166 A EP 06783166A EP 1935521 A1 EP1935521 A1 EP 1935521A1
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EP
European Patent Office
Prior art keywords
sheet
steel plate
cooling
rolling mill
hot rolling
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Granted
Application number
EP06783166A
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German (de)
English (en)
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EP1935521A4 (fr
EP1935521B1 (fr
Inventor
Naoki JFE STEEL CORPORATION NAKATA
Takashi JFE STEEL CORPORATION KUROKI
Akio JFE Steel Corporation FUJIBAYASHI
Shogo JFE STEEL CORPORATION TOMITA
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JFE Steel Corp
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JFE Steel Corp
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Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP1935521A1 publication Critical patent/EP1935521A1/fr
Publication of EP1935521A4 publication Critical patent/EP1935521A4/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product

Definitions

  • the present invention relates to a hot rolling mill and a method for hot rolling a steel plate or sheet.
  • a high-performance steel plate or sheet is produced by application of controlled rolling (CR), in which finish rolling in the non-recrystallization temperature range.
  • CR controlled rolling
  • Examples of techniques used to control the temperature of a rolling material include the following:
  • Japanese Unexamined Patent Application Publication No. 2002-361315 discloses a technique for cooling a steel sheet by supplying cooling water during hot finish rolling of the steel sheet.
  • a laminar water flow is supplied from a slit-shaped nozzle of a header provided between finishing stands to realize high cooling rate. It is said that this technique can be used for manufacturing a fine-grain steel plate or sheet.
  • Japanese Unexamined Patent Application Publication No. 62-260022 discloses a technique for cooling a hot steel plate or sheet by supplying cooling water. This technique uses opposing nozzle units that jet cooling water and that is liftable. It is said that a wide range of cooling rate can be ensured by using the nozzle units in combination with an additional laminar nozzle or a spray nozzle.
  • the slit-shaped nozzle units need to be brought close to a steel plate or sheet.
  • the steel plate or sheet may collide with the slit-shaped nozzle units and damage them, or may become immovable, thereby stopping the manufacturing line or lowering the yield rate.
  • the slit-shaped nozzle units may be moved upward by actuating a lifting equipment when the leading end or the trailing end passes. In that case, however, the leading end or the trailing end is not sufficiently cooled, whereby the desired quality cannot be realized.
  • the cost for installing the lifting equipment is also problematic. Further, the presence of the lifting equipment makes it difficult to install the nozzle units close to the rolling mill. Thus, this technique is not suitable for manufacturing a thin-scale steel sheet.
  • the laminar water flow 53 is jetted at a high pressure, the jet pressure becomes unbalanced, which tends to cause a split of the laminar water flow 53. If the laminar water flow 53 is not properly produced, the cooling water flows toward the upstream or the downstream of the jet area and remains on the steel plate or sheet. This partially cools the steel plate or sheet 10 and leads to a temperature deviation. Although there is a technique for removing the cooling water remaining on the top surface of the steel plate or sheet 10 by using a side spray or the like, the cooling water cannot be completely removed if there is a large amount thereof. Therefore, the temperature deviation occurs.
  • the present invention has been made in view of the above-described situations. It is an object of the invention to provide a hot rolling mill for a steel plate or sheet, which is superior in terms of equipment cost, equipment maintainability, and cooling performance and is capable of efficiently manufacturing a steel plate or sheet having good characteristics by appropriately controlling the temperature of a rolling material when performing hot rolling of the steel plate or sheet; and a method for hot rolling a steel plates or sheet.
  • the present invention has the following features:
  • the present invention provides superiority in terms of equipment cost, equipment maintainability, and cooling performance, and is capable of efficiently manufacturing a steel plate or sheet having good characteristics by appropriately controlling the temperature of a rolling material in conducting hot rolling of a steel plate or sheet.
  • FIGS. 1 and 2 shows hot rolling mills according to embodiments of the present invention.
  • FIG. 1 shows a hot rolling mill for a steel plate or a hot roughing mill for a steel sheet
  • FIG. 2 shows a hot finishing mill for a steel sheet.
  • FIG. 1 shows a reheating furnace 11 for heating a slab to a predetermined temperature, a rolling mill (herein, a reverse rolling mill) 12 for rolling the slab 10 extracted from the reheating furnace 11 into a steel plate or sheet 10 having a predetermined thickness, and cooling equipment 20 for supplying cooling water onto the top and bottom surfaces of the slab (steel plate or sheet) 10 that is being conveyed.
  • the cooling equipment 20 is provided close to the entrance side (upstream side) and the exit side (downstream side) of the rolling mill 12.
  • a table roller is denoted by reference numeral 13.
  • FIG. 2 shows a reheating furnace 11 for heating a slab to a predetermined temperature, a roughing mill (not shown) for rough rolling the slab 10 extracted from the reheating furnace 11 into a steel plate or sheet 10 having a predetermined thickness, a finishing mill (herein, a tandem mill) 12 for rolling the rough rolled steel plate or sheet 10 to a predetermined finished thickness, and a cooling equipment 20 for supplying cooling water onto the top and bottom surfaces of the steel plate or sheet 10 that is being conveyed.
  • the cooling equipment 20 is provided close to the exit side (downstream side) of the rolling mill 12.
  • a table roller is denoted by reference numeral 13.
  • the cooling equipment 20 has an upper header 21 including upper nozzles (circular tube nozzles) 22 for jetting rod-like water flows 23 against the top surface of the steel plate or sheet 10 at an angle of depression ⁇ U in the range of 30° to 60° toward work rolls 12a of the rolling mill 12.
  • the upper header 21 is positioned such that the water supplied onto the top surface of the steel plate or sheet 10, i.e., remaining water 24, is retained by the work rolls 12a of the rolling mill 12.
  • the cooling equipment 20 further has a lower header 31 including lower nozzles (circular tube nozzles) 32 for jetting rod-like water flows 33 against the bottom surface of the steel plate or sheet 10 at an angle of elevation ⁇ L in the range of 45° to 90° toward the work rolls 12a of the rolling mill 12.
  • the lower header 31 is positioned between work rolls 12a of the rolling mill 12 and a table roller 13a adjacent thereto.
  • FIG. 5 shows an exemplary arrangement of the circular tube nozzles 22 mounted on the upper header 21.
  • the circular tube nozzles 22 are arranged in a plurality of rows (herein, six rows) in the transfering direction of the steel plate or sheet 10, and are arranged in the plate or sheet width direction such that they can supply the cooling water onto the overall width of the steel plate or sheet 10 that is being conveyed.
  • the circular tube nozzles 32 mounted on the lower header 31 are arranged in a similar manner.
  • the circular tube nozzles are arranged in the plurality of rows in the transfering direction because it is difficult to retain the remaining water from the cooling water jetted against the steel plate or sheet with a single row of nozzles. Accordingly, it is preferable that the circular tube nozzles be arranged in at least three rows, more preferably, at least five rows, in the transfering direction.
  • the circular tube nozzles 22 and 32 are arranged in the plate or sheet width direction such that they can supply the cooling water onto the overall width of the steel plate or sheet 10 that is being conveyed. Although only one upper header is provided herein, two or more headers having the circular tube nozzles 22 may be provided.
  • the cooling water jetted from the upper nozzles 22 is composed of the rod-like water flows because the rod-like water flows can be produced more stably and have greater power to retain the remaining water than a laminar water flow or the like.
  • the angle of depression ⁇ U of the rod-like water flows 23 jetted from the upper nozzles 22 is set in the range of 30° to 60° because, if the angle of depression ⁇ U is smaller than 30°, the rod-like water flows 23 have a small velocity component in the vertical direction, which weakens the jetting of the rod-like water flows 23 against the steel plate or sheet 10 and degrades cooling performance; and because, if the angle of depression ⁇ U is greater than 60°, the rod-like water flows 23 have an insufficient velocity component in the transfering direction, which makes it more difficult to retain the remaining water 24, allows the remaining water 24 to flow outside of the transfering direction, and makes the cooling area unstable.
  • a more preferable angle of depression ⁇ U is 40 to 50°.
  • the angle of elevation ⁇ L of the rod-like water flows 33 jetted from the lower nozzles 32 is set in the range of 45 to 90° because, if the angle of elevation ⁇ L is smaller than 45°, the rod-like water flows have a small velocity component in the vertical direction, which weakens the jetting of the rod-like water flows against the steel plate or sheet 10 and degrades cooling performance, and the distance between the work rolls 12a and the table roller 13a must be increased; and because, if the angle of elevation ⁇ L is greater than 90°, the cooling water is splashed around the rolling mill 12, which is undesirable from the viewpoint of the operability and equipment maintainability.
  • the cooling equipment 20 supplies the cooling water from the upper header 21 onto the top surface of the steel plate or sheet 10 such that the water flow rate at the surface of the steel plate or sheet is at least 4 m 3 /m 2 /min, and supplies the cooling water from the lower header 31 onto the bottom surface of the steel plate or sheet 10 such that the water flow rate at the surface of the steel plate or sheet is at least 4 m 3 /m 2 /min.
  • the reason for setting the water flow rate to at least 4 m 3 /m 2 /min is as follows.
  • the remaining water 24 shown in FIG. 3 is produced by being retained by the rod-like water flows 23 supplied onto the top surface of the steel plate or sheet 10. At this time, if the water flow rate is low, the remaining water 24 cannot be retained. If the water flow rate is higher than a predetermined level, the amount of remaining water 24 that can be retained increases. This balances the amount of the cooling water that overflows from the ends of the steel plate or sheet in the width direction and the amount of the cooling water that is supplied onto the steel plate or sheet, whereby the amount of the remaining water 24 is maintained at a constant level.
  • a typical steel plate has a width of 2 to 5 m. If the steel plate is cooled at a water flow rate of 4 m 3 /m 2 /min or higher, the remaining water can stay at a water cooling area over the width. Accordingly, the steel plate or sheet 10 can be cooled to a desired temperature during the rolling path.
  • the water flow rate is set at 4 m 3 /m 2 /min or higher, waiting time for desired temperature drop can be reduced with various controlled rolling materials. For example, if the water flow rate is low, a reduction in waiting time can only be achieved with thin rolling materials. If the water flow rate is increased, a reduction in waiting time can be achieved with rolling materials having certain thicknesses. However, the effect of waiting time reduction achieved by increasing the amount of water becomes small as the water flow rate increases. Accordingly, it is preferable that the water flow rate be determined while taking into consideration the effect of waiting time reduction, the equipment cost, and the like. A more preferable water flow rate is 4 to 10 m 3 /m 2 /min.
  • the upper nozzles 22 jet the rod-like water flows 23 at a jet velocity of at least 8 m/s.
  • the maximum number of the rows may be appropriately determined on the basis of the size, speed of travel, target temperature, etc., of the steel plate or sheet to be cooled.
  • a jet velocity exceeding 30 m/s may result in large pressure loss and increased wear of the inner surfaces of the nozzles.
  • the capacity of a pump and the outside diameter of a pipe may be increased, which leads to excessive equipment cost. Accordingly, it is preferable that the jet velocity be 30 m/s or lower.
  • the inside diameter of the nozzles may be in the range of 3 to 8 mm to avoid clogging of the nozzles and to ensure a certain jet velocity of the cooling water.
  • the distance between adjacent nozzles aligned along an imaginary line in the plate or sheet width direction may be set within a range ten times the inside diameter of the nozzles to prevent the cooling water from flowing between the rod-like water flows.
  • the header needs to be brought close to the steel plate or sheet 10.
  • the upper header 21 may be provided at a position upwardly away from a pass line. Therefore, it is preferable that tips of the upper nozzles 22 be positioned away from the pass line to prevent upper nozzles 22a and 22b from being damaged by the warped steel plate or sheet 10 or the like.
  • the distance between the pass line and the tips of the upper nozzles 22 be set in the range of 500 mm to 1800 mm.
  • the hot rolling is performed while jetting the rod-like water flows 23 and 33 so that the remaining water 24 supplied onto the top surface of the steel plate or sheet 10 and the cooling water 34 supplied onto the bottom surface of the steel plate or sheet 10 reach the work rolls 12a of the rolling mill 12.
  • the rod-like water flows 23 are jetted against the top surface of the steel plate or sheet 10 at an angle of depression ⁇ U in the range of 30° to 60° toward the work rolls 12a so that the remaining water 24 supplied onto the top surface of the steel plate or sheet 10 reaches the work rolls 12a. Therefore, the remaining water 24 is retained between the work rolls 12a and the rod-like water flows 23, and a stable cooling area is formed. Accordingly, the problem that the remaining water 24 randomly moves over the steel plate or sheet 10 to nonuniformly cool the steel plate or sheet 10, thereby causing a temperature deviation can be eliminated, and the steel plate or sheet 10 can be uniformly cooled.
  • the cooling area refers to a area of the steel plate or sheet 10 between a position sandwiched between the work rolls and a position at which the rod-like water flows jetted from the circular tube nozzles of the upper header, which are positioned at the furthermost row (outermost row) from the work rolls, hit.
  • the distance between the roll bite of the work rolls 12a and a cooling-start position (a position from where cooling by the cooling water starts) becomes zero.
  • the tips of the upper nozzles 22 may be provided a certain distance away from the pass line, even when a steel plate or sheet whose leading end or trailing end is warped is cooled, the steel plate or sheet 10 does not collide with and damage the upper header 21 nor become immovable. Thus, a stoppage of the manufacturing line or a lowering of the yield rate can be avoided. Because a lifting system for preventing the steel plate or sheet 10 from colliding with the upper header 21 is not necessary, the equipment cost can be reduced.
  • the upper header 21 can be provided close to the rolling mill 12.
  • the hot rolling mill suitable for manufacturing a thin-scale steel sheet can be provided.
  • cooling water 24 and the cooling water 34 supplied onto the steel plate or sheet 10 contact the surfaces of the work rolls 12a and cool the work rolls 12a, an additional cooling system for cooling rolls is not necessary. Accordingly, the equipment cost can be reduced.
  • the cooling water 25 jetted thereon flows as shown in FIG. 4 .
  • the cooling water 25 jetted thereon flows as shown in FIG. 4 .
  • the cooling water 23 and the cooling water 33 may be jetted while temporarily narrowing the roll gap between the work rolls 12a to about 2 mm. This prevents the cooling water 25 from passing through the roll gap and being splashed around. Further, this enables the cooling water 25 to be supplied onto a wider area in the peripheral direction of the work rolls 12a. Needless to say, if such a cooling of the rolls in an interval between passes or the like is not necessary, the jetting of the cooling water 23 and the cooling water 33 may be stopped.
  • the present embodiment provides superiority in terms of equipment cost, equipment maintainability, and cooling performance, and is capable of efficiently manufacturing a steel plate or sheet having good characteristics by appropriately controlling the temperature of a rolling material in conducting hot rolling of a steel plate or sheet.
  • the upper headers 21 and the lower headers 31 are provided at the entrance side and the exit side, respectively, of the rolling mill 12 in FIG. 1
  • the upper headers 21 and the lower headers 31 are provided at the exit side of the rolling mill 12 in FIG. 2 .
  • the present invention is not limited thereto.
  • the upper headers 21 and the lower headers 31 may be provided at one of the entrance side and the exit side of the rolling mill 12.
  • only the upper headers 21, without lower headers 31, may be provided.
  • both the upper header 21 and the lower header 31 be provided so as to equalize cooling performance at both of the upper and lower sides.
  • Example 1 of the present invention controlled rolling of a steel plate in a hot rolling line was conducted. After a steel plate was rolled down to a thickness of 28 mm, controlled rolling was conducted in the last three passes at a predetermined rolling temperature.
  • Example 1 of the present invention the steel plate or sheet 10 was rolled through four passes while being cooled by jetting the rod-like water flows from the cooling equipment 20 provided on the entrance side and the exit side of the hot rolling mill 12 so that the temperature of the steel plate or sheet 10 became a predetermined temperature when the processing through the four passes was finished, before conducting the controlled rolling.
  • the controlled rolling is then conducted in the subsequent last three passes.
  • the angle of depression ⁇ U of the upper nozzles 22 was set at 45°, and the angle of elevation ⁇ L of the lower nozzles 32 was set at 60°.
  • the inside diameters of the upper nozzles 22 and the lower nozzles 32 were set to 6 mm, and the jet velocity of the rod-like water flows was set to 8 m/s.
  • Comparative Example 1 using a hot rolling mill having no cooling equipment for cooling a steel plate or sheet during rolling, controlled rolling was conducted.
  • a steel plate or sheet having been rolled down to a thickness of 28 mm at a relatively high temperature was cooled to a predetermined temperature by performing air-cooling for 30 seconds before conducting controlled rolling. Then, controlled rolling was conducted in the last three passes.
  • Example 2 using a hot rolling mill having cooling equipment disclosed in the above-described Japanese Unexamined Patent Application Publication No. 62-260022 instead of the cooling equipment 20 of Example 1 of the present invention, controlled rolling was conducted in the same manner as Example 1 of the present invention. That is, a steel plate or sheet was rolled while being cooled by a laminar water flow jetted from the slit-shaped nozzle during processing through the four passes before conducting controlled rolling so that the steel plate or sheet had a predetermined temperature when the processing through the four passes was finished. Then, controlled rolling was conducted in the last three passes. The header was installed such that the distance between the roll bite of the work rolls and the cooling-start position (a position from where cooling by the cooling water starts) was 4 m. Cooling was performed on the steel plate or sheet that is being conveyed.
  • Table 1 The result is shown in Table 1.
  • ⁇ denotes a case where a decline in productivity or quality occurred
  • O denotes a case where a decline in productivity or quality did not occur.
  • Example 1 of the present invention the remaining water 24 was retained between the work rolls 12a and the rod-like water flows 23, whereby a stabilized cooling area was formed. This eliminated the problem that the remaining water 24 randomly moves over the steel plate or sheet 10 to nonuniformly cool the steel plate or sheet 10, thereby causing a temperature deviation. Thus, the steel plate or sheet 10 could be uniformly cooled.
  • Example 2 of the present invention rough rolling of a steel sheet in a hot rolling line was conducted. A slab was rolled down to a thickness of 42 mm by a roughing mill.
  • Example 2 of the present invention the steel plate or sheet 10 was rolled through three passes in the rough rolling while being cooled by jetting the rod-like water flows from the cooling equipment 20 provided on the entrance side and the exit side of the rolling mill 12.
  • the angle of depression ⁇ U of the upper nozzles 22 was set at 45°
  • the angle of elevation ⁇ L of the lower nozzles 32 was set at 60°.
  • the inside diameters of the upper nozzles 22 and the lower nozzles 32 were set to 6 mm, and the jet velocity of the rod-like water flows was set to 8 m/s.
  • Comparative Example 3 using a hot rolling mill having no cooling equipment for cooling a steel plate or sheet during rolling, rough rolling was conducted.
  • the slab was heated at a relatively high temperature, the temperature thereof after the rough rolling was high. Therefore, 15-second air-cooling was performed at the entrance side of the finishing mill to suppress formation of scale defects.
  • Example 4 using a hot rolling mill having cooling equipment disclosed in the above-described Japanese Unexamined Patent Application Publication No. 62-260022 instead of the cooling equipment 20 of Example 2 of the present invention, rough rolling was conducted in the same manner as Example 2 of the present invention. That is, a steel plate or sheet was rolled through three passes in the rough rolling while being cooled by a laminar water flow jetted from the slit-shaped nozzle. The header was installed such that the distance between the roll bite of the work rolls and the cooling-start position (a position from where cooling by the cooling water starts) was 4 m. Cooling was performed on the steel plate or sheet that is being conveyed. The result is shown in Table 2.
  • Example 2 of the present invention the remaining water 24 was retained between the work rolls 12a and the rod-like water flows 23, whereby a stabilized cooling area was formed. This eliminated the problem that the remaining water 24 randomly moves over the steel plate or sheet 10 to nonuniformly cool the steel plate or sheet 10, thereby causing a temperature deviation. Thus, the steel plate or sheet 10 could be uniformly cooled. This could properly suppress formation of scale defects.
  • Example 3 of the present invention finish rolling of a steel sheet in a hot rolling line was conducted. Using a finishing mill including seven stands, namely, F1 to F7, a steel sheet was rolled down to a finished thickness of 3 mm.
  • the steel plate or sheet 10 was rolled through four stands, namely, F4 to F7, while being cooled by jetting the rod-like water flows from the cooling equipment 20 provided on the exit side of the rolling mill 12.
  • the angle of depression ⁇ U of the upper nozzles 22 was set at 45°
  • the angle of elevation ⁇ L of the lower nozzles 32 was set at 60°.
  • the inside diameters of the upper nozzles 22 and the lower nozzles 32 were set to 6 mm, and the jet velocity of the rod-like water flows was set to 8 m/s.
  • Example 5 using a hot rolling mill having cooling equipment as disclosed in the above-described Japanese Unexamined Patent Application Publication No. 2002-361315 instead of the cooling equipment 20 of Example 3 of the present invention, finish rolling was conducted in the same manner as Example 3 of the present invention. That is, a steel plate or sheet was rolled through four stands, namely, F4 to F7, while being cooled by a laminar water flow jetted from the slit-shaped nozzle. The header was installed such that the distance between the roll bite of the work rolls and the cooling-start position (a position from where cooling by the cooling water starts) was 2 m.
  • Example 6 using a hot rolling mill having cooling equipment as disclosed in the above-described Japanese Unexamined Patent Application Publication No. 62-260022 instead of the cooling equipment 20 of Example 3 of the present invention, finish rolling was conducted in the same manner as Example 3 of the present invention. That is, a steel plate or sheet was rolled through four stands, namely, F4 to F7, while being cooled by a laminar water flow jetted from the slit-shaped nozzle. The header was installed such that the distance between the roll bite of the work rolls and the cooling-start position (a position from where cooling by the cooling water starts) was 2 m.
  • Example 3 of the present invention the remaining water 24 was retained between the work rolls 12a and the rod-like water flows 23, whereby a stabilized cooling area was formed.
  • the steel plate or sheet 10 could be uniformly cooled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP06783166.9A 2005-08-30 2006-08-29 Installation de laminage à chaud d'une plaque ou d'une tôle en acier et procédés de laminage à chaud utilisant une telle installagion Not-in-force EP1935521B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005249059A JP4586682B2 (ja) 2005-08-30 2005-08-30 鋼板の熱間圧延設備および熱間圧延方法
PCT/JP2006/317394 WO2007026905A1 (fr) 2005-08-30 2006-08-29 Installation de laminage à chaud d’une plaque en acier et procédé de laminage à chaud

Publications (3)

Publication Number Publication Date
EP1935521A1 true EP1935521A1 (fr) 2008-06-25
EP1935521A4 EP1935521A4 (fr) 2011-05-11
EP1935521B1 EP1935521B1 (fr) 2015-12-23

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EP06783166.9A Not-in-force EP1935521B1 (fr) 2005-08-30 2006-08-29 Installation de laminage à chaud d'une plaque ou d'une tôle en acier et procédés de laminage à chaud utilisant une telle installagion

Country Status (5)

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EP (1) EP1935521B1 (fr)
JP (1) JP4586682B2 (fr)
KR (1) KR100973692B1 (fr)
CN (1) CN101253011B (fr)
WO (1) WO2007026905A1 (fr)

Cited By (4)

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EP2431106A1 (fr) * 2009-05-13 2012-03-21 Nippon Steel Corporation Procédé de refroidissement et dispositif de refroidissement pour tôles en acier laminé à chaud
EP2450117A1 (fr) * 2009-06-30 2012-05-09 Sumitomo Metal Industries, Ltd. Dispositif de refroidissement, procédé de refroidissement, dispositif de fabrication et procédé de fabrication de tôles d'acier laminées à chaud
EP2455167A1 (fr) * 2009-07-15 2012-05-23 Sumitomo Metal Industries, Ltd. Appareil de fabrication pour plaques d'acier laminées à chaud et procédé de fabrication de la plaque d'acier
US9833823B2 (en) 2013-05-03 2017-12-05 Sms Group Gmbh Method for producing a metal strip

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DE102007055475A1 (de) * 2007-06-27 2009-01-08 Sms Demag Ag Kühlvorrichtung zum Kühlen eines Metallbandes
JP4907587B2 (ja) * 2008-03-31 2012-03-28 新日本製鐵株式会社 鋼板冷却設備及び鋼板冷却方法
JP5750826B2 (ja) * 2010-01-21 2015-07-22 Ｊｆｅスチール株式会社 厚鋼板の製造方法および水冷パス数の決定方法
JP4874437B2 (ja) * 2010-03-15 2012-02-15 新日本製鐵株式会社 厚鋼板の製造装置
EP2554283B1 (fr) * 2010-03-31 2016-05-11 Nippon Steel & Sumitomo Metal Corporation Procédé et dispositif de production de tôle d'acier laminée à chaud
CN103736756B (zh) * 2013-12-18 2017-01-18 东北大学 一种中厚板轧后超快速冷却装置
KR101819288B1 (ko) * 2015-11-26 2018-01-17 주식회사 포스코 처리수 제거장치
CN108273857A (zh) * 2017-12-29 2018-07-13 南京钢铁股份有限公司 一种提高单机架轧机中间坯冷却穿水效率的方法
CN113102502B (zh) * 2021-02-26 2023-03-24 舞阳钢铁有限责任公司 一种热轧交货保证高表面质量钢板的生产方法
CN115945749A (zh) * 2022-12-31 2023-04-11 广州市德固制冷设备有限公司 一种金属板材加工系统及方法

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EP2431106A1 (fr) * 2009-05-13 2012-03-21 Nippon Steel Corporation Procédé de refroidissement et dispositif de refroidissement pour tôles en acier laminé à chaud
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US8414716B2 (en) 2009-05-13 2013-04-09 Nippon Steel & Sumitomo Metal Corporation Cooling method of hot-rolled steel strip
US8920708B2 (en) 2009-05-13 2014-12-30 Nippon Steel & Sumitomo Metal Corporation Cooling device of hot-rolled steel strip
EP2450117A1 (fr) * 2009-06-30 2012-05-09 Sumitomo Metal Industries, Ltd. Dispositif de refroidissement, procédé de refroidissement, dispositif de fabrication et procédé de fabrication de tôles d'acier laminées à chaud
EP2450117A4 (fr) * 2009-06-30 2014-07-30 Nippon Steel & Sumitomo Metal Corp Dispositif de refroidissement, procédé de refroidissement, dispositif de fabrication et procédé de fabrication de tôles d'acier laminées à chaud
EP2455167A1 (fr) * 2009-07-15 2012-05-23 Sumitomo Metal Industries, Ltd. Appareil de fabrication pour plaques d'acier laminées à chaud et procédé de fabrication de la plaque d'acier
EP2455167A4 (fr) * 2009-07-15 2013-05-29 Nippon Steel & Sumitomo Metal Corp Appareil de fabrication pour plaques d'acier laminées à chaud et procédé de fabrication de la plaque d'acier
US9833823B2 (en) 2013-05-03 2017-12-05 Sms Group Gmbh Method for producing a metal strip

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CN101253011A (zh) 2008-08-27
WO2007026905A1 (fr) 2007-03-08
JP2007061838A (ja) 2007-03-15
JP4586682B2 (ja) 2010-11-24
KR100973692B1 (ko) 2010-08-03
EP1935521A4 (fr) 2011-05-11
CN101253011B (zh) 2010-06-16
EP1935521B1 (fr) 2015-12-23
KR20080034966A (ko) 2008-04-22

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