WO2013012060A1 - 冷却装置、熱延鋼板の製造装置、及び熱延鋼板の製造方法 - Google Patents
冷却装置、熱延鋼板の製造装置、及び熱延鋼板の製造方法 Download PDFInfo
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- WO2013012060A1 WO2013012060A1 PCT/JP2012/068438 JP2012068438W WO2013012060A1 WO 2013012060 A1 WO2013012060 A1 WO 2013012060A1 JP 2012068438 W JP2012068438 W JP 2012068438W WO 2013012060 A1 WO2013012060 A1 WO 2013012060A1
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- WIPO (PCT)
- Prior art keywords
- cooling
- hot
- steel sheet
- pass line
- surface guide
- Prior art date
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Classifications
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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
- 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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
- B21B37/76—Cooling control on the run-out table
-
- 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
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
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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
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
Definitions
- the present invention relates to a cooling device, a hot-rolled steel plate manufacturing apparatus, and a manufacturing method, and more specifically, a cooling device that is excellent in drainage of cooling water and can ensure a high cooling capacity, a hot-rolled steel plate manufacturing device, and a heat
- the present invention relates to a method for producing a rolled steel sheet.
- Steel materials used for automobiles and structural materials are required to have excellent mechanical properties such as strength, workability, and toughness.
- the structure of the steel material is refined. It is effective. Therefore, many methods for obtaining a steel material having a fine structure have been sought.
- miniaturization of a structure even if it reduces the addition amount of an alloy element, it becomes possible to manufacture the high intensity
- the austenite grains are refined by performing high-pressure rolling in the latter stage of hot finish rolling (one of the downstream steel plates when a plurality of rolling mills are arranged in parallel). At the same time, it is known to accumulate rolling strain in the steel sheet and to refine the ferrite grains obtained after rolling. Furthermore, from the viewpoint of promoting ferrite transformation by suppressing recrystallization and recovery of austenite, it is effective to cool the steel sheet to 600 ° C. to 750 ° C. within the shortest possible time after rolling. That is, following the hot finish rolling, it is preferable to install a cooling device capable of cooling earlier than before and rapidly cool the rolled steel sheet.
- cooling water amount density the amount of cooling water injected per unit area on the steel plate, that is, the amount of cooling water. It is effective to increase the size.
- the problem is that the high cooling capacity cannot be exhibited due to such a problem, and there is a case where it is impossible to effectively increase the water density of the cooling water sprayed onto the steel sheet.
- Patent Documents 1 and 2 For drainage on the upper surface side of the steel sheet, techniques such as Patent Documents 1 and 2 are disclosed.
- a hole is provided in the upper surface guide, and cooling water is supplied through the hole, and the hole also functions as a hole that overflows the accumulated water. Yes.
- a hole for supplying cooling water to the upper surface guide and a slit for overflow are separately provided to smooth the drainage of stagnant water and reduce cooling capacity. Can be suppressed.
- the upper surface guide is placed at a high position, the possibility of overflow can be reduced, but the upper surface guide is positioned lower than the injection nozzle of the cooling nozzle to avoid damage to the cooling nozzle due to contact between the steel plate and the cooling nozzle. It is necessary to provide in.
- the cooling nozzle is desirably provided at a position (low) as close to the steel plate as possible in order to suppress a decrease in cooling capacity. Therefore, it is preferable that the upper surface guide is also arranged at a position as low as possible.
- the present invention provides a steel sheet cooling device that can appropriately drain water in response to an increase in the density of cooling water, thereby ensuring a high cooling capacity. Let it be an issue. Moreover, the manufacturing apparatus of a hot-rolled steel plate using this and the manufacturing method of a hot-rolled steel plate are provided.
- the invention according to claim 1 is arranged on the downstream side of the hot finish rolling mill row, can supply cooling water from above the pass line toward the pass line, and has a plurality of cooling devices arranged in parallel in the direction of the pass line.
- a cooling device comprising a nozzle and an upper surface guide disposed between the pass line and the cooling nozzle, wherein the cooling nozzle has a cooling water density of 0.16 (m 3 / (m 2 ⁇ sec)) or more.
- Cooling water can be injected, the cooling water volume density to be injected is q m (m 3 / (m 2 ⁇ sec)), the cooling nozzle pass line direction pitch is L (m), the lower surface of the upper surface guide and the pass line H p (m), uniform cooling width W u (m), and virtual flow channel cross-sectional area of drainage flowing in the steel plate width direction per pitch in the pass line direction of the cooling nozzle, S (m 2 )
- the upper surface guide has a form in which the distance between the pass line and the top guide changes in the pass line direction, instead of h p, the upper surface The equivalent height hp ′ of the guide is applied.
- the invention according to claim 3 is characterized in that in the cooling device according to claim 1 or 2, at least one of the upper surface guide and the cooling nozzle is movable in the vertical direction.
- the invention according to claim 4 includes the hot finish rolling mill row and the cooling device according to any one of claims 1 to 3 arranged downstream of the hot finish rolling mill train,
- the upstream end is an apparatus for producing a hot-rolled steel sheet, which is arranged inside a final stand of a hot finish rolling mill row.
- the invention according to claim 5 includes a step of cooling the steel plate by supplying cooling water to at least the upper surface of the steel plate after finish rolling by a cooling device disposed downstream of the hot finish rolling mill row.
- Q a (m 3 / (m 2 ⁇ sec), wherein the cooling water density from the cooling nozzle provided in the cooling device is 0.16 (m 3 / (m 2 ⁇ sec)) or more.
- the pitch of the cooling nozzle in the plate direction is L (m)
- the distance between the lower surface of the upper surface guide disposed in the cooling device and the upper surface of the steel plate to be passed is h a (m)
- the plate width is W a (m)
- the virtual channel cross-sectional area of the drainage flowing in the steel plate width direction per pitch in the plate direction of the cooling nozzle is S a (m 2 )
- the invention according to claim 7 is the method for producing a hot-rolled steel sheet according to claim 5 or 6, wherein at least one of the upper surface guide and the cooling nozzle is movable in the vertical direction. .
- the cooling device in the method for producing a hot-rolled steel sheet according to any one of the fifth to seventh aspects, includes an end on the upstream side of the hot finish rolling mill at the upstream end of the cooling device. It is arrange
- the present invention it is possible to increase the water density of cooling water and to cool it using a large amount of cooling water, to produce a hot-rolled steel sheet that is smoothly drained and whose structure is refined. Is possible. That is, as a result of smooth drainage, the upper surface of the staying water can be prevented from reaching the upper surface guide, and the steel sheet can be effectively cooled. Moreover, such smooth drainage suppresses uneven cooling in the sheet width direction of the steel sheet, and enables more uniform cooling.
- FIG. 2A is an enlarged view of FIG. 1 to include the entire cooling device at a portion where the cooling device is disposed.
- FIG. 2B is a diagram focusing on the upstream side in FIG. It is the figure seen from the arrow III of Fig.2 (a). It is a figure for demonstrating a cooling nozzle. It is another figure for demonstrating a cooling nozzle. It is a figure for demonstrating Formula (1). It is a figure explaining the site
- FIG. 1 is a diagram schematically showing a part of a hot-rolled steel sheet manufacturing apparatus 10 including a steel sheet cooling apparatus 20 (hereinafter, sometimes referred to as “cooling apparatus 20”) according to one embodiment. It is.
- the steel sheet 1 is conveyed from the left side (upstream side, upper process side) to the right side (downstream side, lower process side) of the paper surface, and the top and bottom of the paper surface is the vertical direction.
- the upstream side (upper process side) / downstream side (lower process side) direction may be described as the passing plate direction, and the direction of the plate width of the steel plate to be passed is the direction perpendicular to this direction. May be described.
- repeated reference numerals may be omitted.
- a line through which a steady rolling portion (a portion other than the front end portion and the rear end portion) of the steel plate 1 passes is represented as a pass line P. Therefore, the steady rolling portion of the steel sheet passes through the pass line P.
- a hot rolled steel sheet manufacturing apparatus 10 includes a hot finish rolling mill row 11, a cooling device 20, transport rolls 12, 12,..., A pinch roll 13. Although illustration and explanation are omitted, a heating furnace, a rough rolling mill row, and the like are arranged upstream from the hot finish rolling mill row 11 to adjust the conditions of the steel sheet for entering the hot finish rolling mill row 11. ing. On the other hand, another cooling device and a winder are provided on the downstream side of the pinch roll 13, and various facilities for shipping as a steel plate coil are arranged.
- Hot-rolled steel sheets are generally manufactured as follows. That is, the rough bar extracted from the heating furnace and rolled to a predetermined thickness by the rough rolling mill is continuously rolled to the predetermined thickness by the hot finish rolling mill row 11 while the temperature is controlled. Thereafter, it is rapidly cooled in the cooling device 20.
- the cooling device 20 has the rolling rolls 11gw and 11gw (see FIG. 2) of the final stand 11g inside the housing 11gh that supports the rolling roll (work roll). ) As close as possible. And it passes through the pinch roll 13, is cooled to a predetermined winding temperature by another cooling device, and is wound up in a coil shape by a winder.
- FIG. 2 is an enlarged view of a portion of FIG. 1 where the cooling device 20 is provided.
- FIG. 2A is an enlarged view so that the entire cooling device 20 appears, and
- FIG. 2B is a view paying attention to the vicinity of the final stand 11g.
- FIG. 3 is a schematic view of the manufacturing apparatus 10 viewed from the downstream side of the final stand 11g, and is a view of the manufacturing apparatus 10 viewed from the direction indicated by the arrow III in FIG. Accordingly, in FIG. 3, the upper and lower sides of the drawing are the vertical direction of the manufacturing apparatus 10, the left and right sides of the drawing are the steel plate width direction, and the back / front direction of the drawing is the sheet passing direction.
- each of the stands 11a, 11b,..., 11g is equipped with a rolling mill included in each stand, and can satisfy conditions such as thickness, mechanical properties, surface quality, and the like required for the final product.
- rolling conditions such as a rolling reduction are set.
- the reduction ratio of each of the stands 11a, 11b,..., 11g is set so as to satisfy the performance that the steel sheet to be manufactured should have. It is preferable that the rolling reduction is large in the final stand 11g from the viewpoint of refining the ferrite grains obtained after rolling.
- Each of the stands 11a,..., 11f, 11g has a pair of work rolls 11aw, 11aw,..., 11fw, 11fw, 11gw, 11gw, and the work rolls 11aw, 11aw,.
- a pair of backup rolls 11ab, 11ab,..., 11fb, 11fb, 11gb, and 11gb arranged so that the outer circumferences are in contact with 11fw, 11fw, 11gw, and 11gw.
- the rolling mill includes work rolls 11aw, 11aw, ..., 11fw, 11fw, 11gw, 11gw and backup rolls 11ab, 11ab, ..., 11fb, 11fb, 11gb, 11gb on the inside, and stands 11a, ..., 11f, 11g , 11fw, 11fw, 11gw, 11gw and backup rolls 11ab, 11ab,..., 11fb, 11fb, 11gb, 11gb, and housings 11ah,. ing.
- the housings 11ah,..., 11fh, 11gh have standing portions (for example, the standing portions 11gr, 11gr shown in FIG. 3 in the final stand 11g) that face each other.
- the standing part of the housing is erected so as to sandwich the steel plate 1 (pass line P) in the steel plate width direction, as can be seen from FIG. Further, the standing portions 11gr and 11gr of the final stand 11g are erected so as to sandwich a part of the cooling device 20 and the steel plate 1 (pass line P) in the steel plate width direction.
- the distance between the shaft center of the work roll 11gw and the downstream end surface of the housing standing portions 11gr, 11gr, which is indicated by L1 in FIG. 2A, is larger than the radius r1 of the work roll 11gw.
- a part of the cooling device 20 can be disposed at a portion corresponding to L1-r1 as described later. That is, it is possible to install a part of the cooling device 20 so as to be inserted inside the housing 11gh.
- the housing standing portions 11gr and 11gr are provided on both sides of the cooling device 20 in the steel plate width direction. It exists as a side wall.
- a predetermined gap is formed between the end portion of the cooling device 20 in the width direction of the steel plate and the housing standing portions 11gr, 11gr.
- the cooling device 20 includes upper surface water supply means 21, 21, ..., lower surface water supply means 22, 22, ..., upper surface guides 30, 30, ..., and lower surface guides 35, 35, ....
- the upper surface water supply means 21, 21,... Are means for supplying cooling water to the upper surface side of the steel sheet 1, that is, from above to the pass line P, and to the cooling headers 21 a, 21 a,. , And cooling nozzles 21c, 21c,... Attached to the tips of the conduits 21b, 21b,.
- the cooling header 21a is a pipe extending in the steel plate width direction, and such cooling headers 21a, 21a,.
- the conduit 21b is a plurality of thin pipes branched from the respective cooling headers 21a, and the opening ends thereof are directed to the upper surface side (pass line P) of the steel plate 1.
- a plurality of conduits 21b, 21b,... Are provided in a comb-teeth shape along the tube length direction of the cooling header 21a, that is, in the steel plate width direction.
- a cooling nozzle 21c, 21c,... Is attached to the tip of each conduit 21b, 21b,.
- the cooling nozzles 21c, 21c,... Of the present embodiment are flat type spray nozzles capable of forming a fan-shaped cooling water jet (for example, a thickness of about 5 mm to 30 mm).
- 4 and 5 are schematic views of a cooling water jet formed on the steel plate surface by the cooling nozzles 21c, 21c,...
- FIG. 4 is a perspective view.
- FIG. 5 is a diagram schematically showing a collision mode when the jet collides with the steel plate surface.
- white circles represent the positions immediately below the cooling nozzles 21 c, 21 c,...
- Thick lines represent the collision positions of the cooling water jets on the steel plate 1 and the outline.
- one nozzle row (for example, nozzle row A, nozzle row B, nozzle row C) is formed by the cooling nozzles 21c, 21c,... Arranged in a certain cooling header 21a.
- the positions of the steel plate width direction are shifted in the adjacent nozzle rows (for example, nozzle row A and nozzle row B, nozzle row B and nozzle row C).
- the adjacent nozzle rows (for example, nozzle row A and nozzle row C) are arranged in a so-called staggered arrangement so that the positions in the width direction of the steel plate are the same.
- the cooling nozzle is arranged so that the cooling water jet can pass at least twice over all positions in the steel plate width direction on the surface of the steel plate 1.
- a point ST of the steel plate 1 to be passed moves along a straight arrow in FIG.
- C jets from the cooling nozzles 21c, 21c,... Belonging to the nozzle rows A, B, C collide twice.
- the collision width L f of the cooling water jet, and the torsion angle ⁇ , L f 2P W / cos ⁇
- the cooling nozzles 21c, 21c,... are arranged so that the above relationship is established.
- the collision occurs twice, but the present invention is not limited to this, and the collision may be performed three or more times.
- the cooling nozzles 21c, 21c,... Were twisted in directions opposite to each other in the nozzle rows adjacent in the sheet passing direction.
- the “uniform cooling width” for cooling is determined by the arrangement of the cooling nozzles. This means the size in the plate width direction of the steel plate 1 that can uniformly cool the conveyed steel plate due to the properties of the plurality of cooling nozzles arranged. Specifically, it often coincides with the maximum width of the steel sheet that can be manufactured in the steel sheet manufacturing apparatus. Specifically, for example, the size is indicated by W u in FIG.
- the present invention in the adjacent nozzle rows A, B, and C as described above, the configuration in which the cooling nozzles are twisted in the opposite directions to each other has been described.
- the present invention is not necessarily limited thereto. All may be twisted in the same direction.
- the twist angle ( ⁇ above) is not particularly limited, and can be appropriately determined from the viewpoint of required cooling capacity, accommodation of equipment arrangement, and the like.
- the cooling nozzles are arranged in a staggered arrangement in the nozzle rows A, B, and C adjacent to each other in the sheet passing direction from the viewpoint of the above advantages, but the present invention is not limited to this. May be arranged in a straight line in the plate passing direction.
- the position in the sheet passing direction (direction of the pass line P) of the steel sheet is not particularly limited, but is preferably configured as follows. That is, immediately after the final stand 11g in the hot finish rolling mill row 11, a part of the cooling device 20 is arranged as close as possible to the work roll 11gw of the final stand 11g from the inside of the housing 11gh of the final stand 11g. . As a result, the steel plate 1 immediately after rolling by the hot finish rolling mill 11 can be rapidly cooled, and the tip of the steel plate 1 can be stably guided to the cooling device 20.
- the height position of the upper surface water supply means 21 is assumed to be along the upper surface guide 30 arranged so as to satisfy the formula (1) described later.
- the height of the upper surface water supply means 21 is within the housing 11gh of the final stand 11g.
- part it is provided so that it may approach the pass line P (steel plate 1), ie, it may become low.
- the injection direction of the cooling water injected from the cooling water injection ports of the respective cooling nozzles 21c, 21c,... Is based on the vertical direction, while the injection of the cooling water from the cooling nozzle closest to the work roll 11gw of the final stand 11g is performed.
- the lower surface water supply means 22, 22,... are means for supplying cooling water to the lower surface side of the steel plate 1, that is, supplying cooling water from below the pass line P.
- the lower surface water supply means 22, 22,... Are provided opposite to the upper surface water supply means 21, 21,..., And are substantially the same as the upper surface water supply means 21, 21,. The description is omitted here.
- the upper surface guides 30, 30, ... are arranged between the upper surface water supply means 21 and the pass line P (steel plate 1), and when passing the front end of the steel plate 1, the front end of the steel plate 1 is connected to the conduits 21 b, 21 b,. It is a plate-like member provided so as not to be caught by the cooling nozzles 21c, 21c. Also, the upper surface guides 30, 30,... Are provided with inflow holes through which the jet flow from the upper surface water supply means 21 passes. Thereby, the jet flow from the upper surface water supply means 21 passes through the upper surface guides 30, 30,..., Reaches the upper surface of the steel plate 1, and can be appropriately cooled.
- the shape of the upper surface guide 30 used here is not particularly limited, and a known upper surface guide can be used.
- the upper surface guides 30, 30,... are arranged as shown in FIG. In the present embodiment, three upper surface guides 30, 30, 30 are used and are arranged in the line direction of the pass line P. All of the upper surface guides 30, 30, 30 are arranged so as to correspond to the height direction positions of the cooling nozzles 21c, 21c,.
- the height positions of the upper surface guides 30, 30,... are arranged so as to satisfy the expression (1) described later, but as can be seen from FIGS. 2 (a) and 2 (b), the housing 11gh of the final stand 11g. About the inside part, it inclines so that it may approach the pass line P (steel plate 1) according to the height position of the nozzles 21c, 21c,.
- the lower surface guides 35, 35,... are plate-like members arranged between the lower surface water supply means 22 and the pass line P (steel plate 1). Thereby, especially when letting the steel plate 1 pass through the manufacturing apparatus 10, it is possible to prevent the leading edge of the steel plate 1 from being caught by the lower surface water supply means 22, 22,. Further, the lower surface guides 35, 35,... Are provided with inflow holes through which the jets from the lower surface water supply means 22, 22,. Thereby, the jet flow from the lower surface water supply means 22, 22,... Passes through the lower surface guide 35 and reaches the lower surface of the steel plate 1, so that the steel plate 1 can be appropriately cooled.
- the shape of the lower surface guide 35 used here is not particularly limited, and a known lower surface guide can be used.
- lower surface guides 35, 35,... are arranged as shown in FIG. In this embodiment, four lower surface guides 35, 35,... Are used, and are arranged between the work roll 11gw, the pinch roller 13, and the transport rolls 12, 12, 12. All of the lower surface guides 35, 35,... Are arranged at a height that is not so low with respect to the upper ends of the transport rolls 12, 12,.
- the lower surface guide is not necessarily provided.
- the transport rolls 12, 12,... Of the manufacturing apparatus 10 are rolls for transporting the steel sheet 1 to the downstream side, and are arranged at predetermined intervals in the line direction of the pass line P.
- the pinch roller 13 also serves as a drainer and is provided on the downstream side of the cooling device 20. Thereby, it is possible to prevent the cooling water injected in the cooling device 20 from flowing out to the downstream side. Furthermore, the waviness of the steel plate 1 in the cooling device 20 can be suppressed, and in particular, the plate-through property of the steel plate 1 before the tip of the steel plate 1 is bitten by the winding device can be improved.
- the upper roll 13a is movable up and down as shown in FIG.
- the above-described hot-rolled steel sheet manufacturing apparatus 10 manufactures a steel sheet as follows. That is, the injection of the cooling water in the cooling device 20 is stopped during the non-rolling time until the steel plate 1 is taken up by the winder and rolling of the next steel plate 1 is started. And the pinch roller 13 arranged on the downstream side of the cooling device 20 moves the upper roll 13a to a position higher than the upper surface guide 30 of the cooling device 20 during the non-rolling time. Rolling is started. When the leading end of the next steel plate 1 reaches the pinch roller 13, cooling by injection of cooling water is started. Moreover, immediately after the front-end
- the length of the unsteady cooling part at the front end of the steel plate 1 can be shortened, and the injection is performed. It becomes possible to stabilize the plate-passability of the steel plate 1 by the cooling water. That is, when the steel plate 1 floats and approaches the upper surface guide 30, the collision force that the steel plate 1 receives from the cooling water jets injected from the cooling nozzles 21 c, 21 c,. Force acts. Therefore, even when the steel plate 1 collides with the upper surface guide 30, the impact force is mitigated by the collision force received from the cooling water jet, and the frictional heat between the steel plate 1 and the upper surface guide 30 is reduced.
- a hot-rolled steel sheet is manufactured by the hot-rolled steel sheet manufacturing apparatus 10 provided with the cooling device 20 operated in this way on the downstream side of the hot finish rolling mill row 11, a high cooling water density and a large amount of cooling water can be obtained. Can be used and cooled. That is, by manufacturing a hot-rolled steel sheet by such a manufacturing method, it becomes possible to manufacture a hot-rolled steel sheet having a refined structure.
- the plate passing speed in the hot finish rolling mill row may be constant except for the plate start portion. Thereby, the steel plate with which mechanical strength was raised over the steel plate full length can be manufactured.
- the cooling device 20 of the present embodiment further has the following characteristics. This will be described with reference to the diagram shown in FIG. FIG. FIG. 6 is a diagram schematically showing an enlarged part of the cooling device 20, and shows the positional relationship between the upper surface water supply means 21, 21,..., The upper surface guide 30, and the pass line P.
- the left side of the drawing is the upstream side
- the right side of the drawing is the downstream side
- the vertical direction of the drawing is the vertical direction of the manufacturing apparatus 10. Accordingly, the back / front direction of the paper is the steel plate width direction.
- the pitch between the upper surface water supply means 21, 21 adjacent to each other in the line direction of the pass line P is L (m)
- the amount of cooling water sprayed from the nozzle 21c is q m (m 3 / m 2 ⁇ sec)
- Uniform cooling width W u (m) (see FIG. 5)
- S (m 2 ) the cross-sectional area of the virtual flow path from which water jetted from one upper surface water supply means 21 shown by oblique lines in FIG.
- the cross-sectional area S (m 2 ) of the virtual flow path can be obtained as follows.
- the cross-sectional area S all in which the cooling water sprayed on the upper surface of the steel plate 1 may be drained in the width direction of the steel plate is expressed by the following equation (2) per one upper surface water supply means 21.
- the said S all includes a portion where the cooling water injected traverses the portion crossing substantially the it is necessary to exclude from the flow path cross-sectional area for drainage. Therefore, if the excluded area is S j (m 2 ), this can be expressed by the following equation (3).
- L j1 is the length (m) of the cross-sectional direction of the cross section of the jet flow in the jet direction cross section at a portion passing through the upper surface guide 30.
- L j2 is the same length (m) on the pass line P. Therefore, the virtual channel cross-sectional area S can be calculated from the following equation (4).
- Expression (4) and Expression (1) obtained by substituting this can be applied to any type of nozzle.
- the nozzle is a flat nozzle and the spread angle in the plate passing direction is ⁇ n .
- the above-mentioned L j1 and L j2 can be expressed as in the equations (5) and (6).
- h n (m) means the distance between the tip of the nozzle and the pass line P.
- the water flow density q m is 0.16 m 3 / (m 2 ⁇ sec). (10 m 3 / (m 2 ⁇ min)) or more.
- the amount of high cooling water is high. It was found that the water can be cooled using a large amount of density and cooling water, and the drainage can be performed smoothly. That is, it is possible to manufacture a hot-rolled steel sheet having a refined structure by manufacturing the hot-rolled steel sheet using such a hot-rolled steel sheet manufacturing apparatus. Specifically, as a result of smooth drainage, it is possible to prevent the upper surface of the staying water from reaching the upper surface guide 30 and to effectively cool the steel plate 1. Further, such smooth drainage prevents uneven cooling in the width direction of the steel sheet 1 and enables more uniform cooling.
- FIG. 7 shows a diagram corresponding to FIG.
- the equivalent height hp ′ is obtained from the following equation (7).
- hp1 is the distance from the pass line P on the upper process side to the lower surface of the upper surface guide 30 among the parts constituting S a11 as can be seen from FIG.
- hp2 is the distance from the pass line P on the lower process side to the lower surface of the upper surface guide 30 among the parts constituting S a11 .
- the expression (1) is obtained from the flow rate of the cooling water flowing between the pass line P (steel plate 1) and the upper surface guide 30 and the virtual flow path cross-sectional area through which the cooling water flows. Since the distance to the upper surface guide 30 is determined, the concept can be applied even when the upper surface guide 30 is not arranged in parallel to the pass line P (steel plate 1).
- the rapid cooling of the portion shown in FIG. 2B is important for the refinement of ferrite grains, but it does not simply increase the water volume density of the cooling water, but expresses the upper limit of the water volume density of the cooling water. Since the overflow of stagnant water can be suppressed by limiting to the range of (1), it is effective for effective cooling.
- FIG. 8 shows an example in which the upper surface guide 30 ′ is applied.
- FIG. 8 is a diagram corresponding to FIGS. 6 and 7.
- S 1 of the formula (8) ' is a virtual flow path cross-sectional area at the site of the height h p as indicated by hatching in FIG. 8 is similar to S in formula (1).
- S 2 ′ in the equation (8) is a virtual flow path cross-sectional area at a portion having a height h ′ as represented by light ink in FIG. Therefore, in the case of the upper surface guide 30 ′, the changed virtual channel cross-sectional area S ′ obtained by the equation (8) is substituted for the virtual channel cross-sectional area S in the equation (1).
- Equation (9) is an equation for calculating the 'height equivalent h p' in top guide 30.
- r is the area expansion ratio of the virtual channel cross-sectional area, and is calculated as S ′ / S 1 ′ in this embodiment.
- the cross-sectional area for draining the cooling water is enlarged, and the drainage performance can be further improved.
- FIG. 9 also shows an example of a top guide having irregularities.
- FIG. 9 shows an example in which the upper surface guide 30 ′′ is applied and corresponds to FIGS.
- S 1 of the formula (10) is a virtual flow path cross-sectional area at the site of the height h p as indicated by hatching in FIG. 9 is similar to S in formula (1).
- the formula S 2 ′′ in (10) is a virtual flow path cross-sectional area at a height h ′′ as represented by light ink in FIG. 9. Therefore, in the case of the upper surface guide 30 ′′, the virtual equation is expressed in Equation (1). Instead of the channel cross-sectional area S, the changed virtual channel cross-sectional area S ′ obtained by the equation (10) is substituted.
- Expression (11) is an expression for calculating the equivalent height hp ′ of the upper surface guide 30 ′′.
- r is the area expansion ratio of the virtual channel cross-sectional area, and in this embodiment, S ′ / S 1 ′′. Is calculated by Therefore, it is possible to apply the formula (1) by using the equivalent height hp ′ even in the upper surface guide 30 ′′.
- S a (m 2) shows the above-mentioned equations (2) to (7), based on the distance h a and the steel sheet 1 in place of the distance h p of the top guide 30 and pass line P You can ask for it to change.
- Figure 7 As shown in to 9, even when the distance between the pass line P and the upper surface guide changes in sheet passing direction (pass line direction), S a corresponding to the changed virtual channel cross-sectional area S '
- the equivalent height h a ′ corresponding to the above-described equivalent height h p ′ may be used.
- the amount of cooling water quantity q a is 0.16 m 3 / (m 2 ⁇ sec). (10 m 3 / (m 2 ⁇ min)) or more.
- the manufacturing conditions for satisfying the above formula (12) and / or the injection of cooling water while complying with the relationship with other parts of the manufacturing apparatus and the constraints of the surrounding environment it becomes possible to give conditions and the like.
- the manufacturing device 10 including the same, and the method for manufacturing a hot-rolled steel sheet, for example, the cooling water density, the width of the steel sheet, and the pitch of the cooling nozzles for obtaining the required cooling capacity are determined.
- the position of the upper surface guide can be set so as to satisfy the expressions (1) and (12).
- the cooling water density and the pitch of the cooling nozzle can be changed so as to satisfy the expressions (1) and (12), and it is possible to know in advance how much to do so.
- the upper limit of the height position of the upper surface guide 30 is preferably 1 m from the viewpoint of sheet passability.
- the height position of at least one of the upper surface guide and the cooling nozzle of the cooling device may be configured to be movable.
- the equation (1), h p in equation (12), the h a can be changed according to circumstances, to ensure additional adequate drainage, be to utilize the high cooling capacity It becomes possible.
- the lower surface of the upper surface guide is assumed not to be higher than the lower end of the cooling nozzle of the upper surface water supply means. This is because the plate is affected.
- the means for moving the upper surface guide in the vertical direction is not particularly limited.
- an arm that retracts the upper surface guide when replacing the work roll, a cylinder at the connecting portion between the rail and the upper surface guide, or the arm or rail itself This can be done by moving up and down.
- Tables 1 to 5 show the conditions and results.
- Tables 1 to 3 show examples in which the upper surface guide has a flat plate shape, and the distance between the pass line P and the upper surface guide is constant in the plate passing direction (pass line direction).
- Table 1 shows the case where the steel plate width is 1.0 m
- Table 2 shows the case where the steel plate width is 1.6 m
- Table 3 shows the case where the steel plate width is 2.0 m.
- Tables 4 and 5 are examples in which the upper surface guide has irregularities as shown in FIG.
- the width of each steel plate was 2.0 m.
- the drainage evaluation was performed as follows. That is, the case where the tip of the cooling nozzle was submerged by the backflow drainage from the hole provided in the upper surface guide through which the cooling water jet passes was marked as ⁇ , and the case where it was not marked as ⁇ . This is because when the tip of the cooling nozzle is submerged, the jet form of the cooling water changes from an air-liquid jet (jet that passes through the air) to a liquid-liquid jet (jet that passes through the water), and the jet is attenuated. This is because the impact force on the hot-rolled steel sheet is greatly reduced.
- Tables 4 and 5 are examples in which the upper surface guide is uneven as described above. Therefore, the virtual flow path cross-sectional area S a ′ changed using Expression (8) and Expression (9) is used. (S ′) and the equivalent height h a ′ (h p ′) were calculated, and based on this, the left side of the equation (12) was calculated.
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Abstract
Description
(2)滞留水の排出に際し、上面ガイドとの接触による流動抵抗が生じるので排水性が低下する。
(3)オーバーフローした水は制御し難いため、他の部位へ流れ込む等して予期せぬ弊害を招く虞がある。
また、特許文献2に記載の鋼板の冷却装置では、上面ガイドに冷却水を供給するための孔とオーバーフローのためのスリットを別個に設け、滞留水の排水の円滑を図り、冷却能力の低下を抑制することができる。
が成立することを特徴とする冷却装置である。
が成立することを特徴とする熱延鋼板の製造方法である。
各スタンド11a、…、11f、11gの圧延機は、実際に鋼板を挟んで圧下する一対のワークロール11aw、11aw、…、11fw、11fw、11gw、11gwと、該ワークロール11aw、11aw、…、11fw、11fw、11gw、11gwに外周同士を接するように配置された一対のバックアップロール11ab、11ab、…、11fb、11fb、11gb、11gbとを有している。また、圧延機はワークロール11aw、11aw、…、11fw、11fw、11gw、11gw及びバックアップロール11ab、11ab、…、11fb、11fb、11gb、11gbを内側に含み、スタンド11a、…、11f、11gの外殻を形成し、ワークロール11aw、11aw、…、11fw、11fw、11gw、11gw及びバックアップロール11ab、11ab、…、11fb、11fb、11gb、11gbを支持するハウジング11ah、…、11fh、11ghを備えている。該ハウジング11ah、…、11fh、11ghは対向して立設された立設部(例えば最終スタンド11gにおいては図3に表れている立設部11gr、11gr)を有している。すなわち、ハウジングの立設部は、図3からわかるように、鋼板1(パスラインP)を鋼板板幅方向に挟むように立設されている。また最終スタンド11gの立設部11gr、11grは、冷却装置20の一部及び鋼板1(パスラインP)を鋼板板幅方向に挟むように立設されている。
また、図3に示すように、冷却装置20がハウジング立設部11gr、11grの間に挿入された部位において、冷却装置20の鋼板板幅方向の両側部にはハウジング立設部11gr、11grが側壁として存在する。そして冷却装置20の鋼板板幅方向端部とハウジング立設部11gr、11grとの間には所定の間隙が形成されている。
本実施形態では、図2、図3からわかるように冷却ヘッダ21aは鋼板板幅方向に延在する配管であり、このような冷却ヘッダ21a、21a、…が通板方向に配列されている。
導管21bは各冷却ヘッダ21aから分岐する複数の細い配管であり、その開口端部が鋼板1の上面側(パスラインP)に向けられている。導管21b、21b、…は、冷却ヘッダ21aの管長方向に沿って、すなわち鋼板板幅方向に複数、櫛歯状に設けられている。
また、図4、図5からわかるように本実施形態では、隣り合うノズル列(例えばノズル列Aとノズル列B、ノズル列Bとノズル列C)では、鋼板板幅方向の位置をずらすように配置し、さらにその隣のノズル列(例えばノズル列Aとノズル列C)とは鋼板板幅方向位置が同じとなるように、いわゆる千鳥状配列としている。
Lf=2PW/cosβ
の関係が成り立つように、冷却ノズル21c、21c、…を配置した。ここでは2回衝突するとしたが、これに限定されることはなく、3回以上衝突するように構成してもよい。なお、鋼板板幅方向における冷却能の均一化を図るという観点から、通板方向で隣り合うノズル列では、互いに逆の方向に冷却ノズル21c、21c、…を捻った。
また、本実施形態では、上記利点の観点から通板方向に隣り合うノズル列A、B、Cで冷却ノズルを千鳥状配列とする形態としたが、これに限定されるものではなく、冷却ノズルが通板方向に直線上に配列される形態であってもよい。
上面給水手段21の高さ位置については、後述する式(1)を満たすように配置された上面ガイド30に沿ったものとされるが、図2からわかるように最終スタンド11gのハウジング11gh内の部位についてはパスラインP(鋼板1)に近づくように、すなわち低くなるように設けられている。
上面ガイド30、30、…の高さ位置については、後述する式(1)を満たすように配置されるが、図2(a)、図2(b)からわかるように最終スタンド11gのハウジング11gh内の部位については、ノズル21c、21c、…の高さ位置に合わせてパスラインP(鋼板1)に近づくように傾斜して設けられている。
当該次の鋼板1の先端がピンチローラ13に到達したときに冷却水の噴射による冷却を開始する。また、鋼板1の先端がピンチローラ13を通過した直後に上側ロール13aを下降させ、鋼板1のピンチを開始する。このとき鋼板1の上面側に供給された冷却水は、鋼板1の冷却に供された後、図3にD、Dで示したように、鋼板1の鋼板板幅方向両端から排水される。
従って、このように操業される冷却装置20を熱間仕上げ圧延機列11の下流側に備える熱延鋼板の製造装置10により熱延鋼板を製造すれば、高い冷却水量密度、大量の冷却水を用いて冷却することが可能になる。すなわち、かかる製造方法により熱延鋼板を製造することで、組織が微細化された熱延鋼板を製造することが可能になる。
鋼板1の上面に噴射された冷却水が鋼板板幅方向へ排水される可能性のある断面積Sallは1つの上面給水手段21当たり、次式(2)で表わされる。
例としてノズルをフラットノズルとし、その通板方向の広がり角をθnとすれば、上記Lj1、及びLj2は式(5)、式(6)のように表わすことができる。
このような上面ガイド30’が適用された場合にも、基本的には式(1)~式(7)と同様の考え方を適用することができる。ただし、上面ガイド30’を適用したことによる排水のための仮想流路断面積の増加を考慮し、式(1)のS、hpに代えて、変更された仮想流路断面積S’、及び相当高さhp’を適用する。本形態では、S’は式(8)、hp’は式(9)からそれぞれ求めることができる。
このような上面ガイド30”が適用された場合にも、基本的には式(1)~式(7)と同様の考え方を適用することができる。ただし、上面ガイド30”を適用したことによる排水のための仮想流路断面積の増加を考慮し、式(1)のS、hpに代えて、変更された仮想流路断面積S’、及び相当高さhp’を適用する。本形態では、S’は式(10)、hp’は式(11)からそれぞれ求めることができる。
図7~図9で示したように、パスラインPと上面ガイドとの距離が通板方向(パスライン方向)で変化するときも、変更された仮想流路断面積S’に対応するSa’を用い、上記した相当高さhp’に対応する相当高さha’を用いればよい。
また、冷却装置20のように、その上流側で上面ガイド30をパスラインPに近付ける必要がある場合、すなわち式(1)におけるhp、式(12)におけるhaが決まっているときがある。かかる場合には、式(1)、式(12)を満たすように冷却水量密度、冷却ノズルのピッチを変更することができ、それをどの程度行えば良いかについて予め知ることが可能である。
ただし、このときには、上面ガイドの下面が上面給水手段の冷却ノズルの下端よりも高くならないものとする。通板に影響を及ぼすからである。
表1~表3は上面ガイドが平板状であり、パスラインPと上面ガイドとの距離が通板方向(パスライン方向)で一定の例である。表1は鋼板の幅が1.0m、表2は鋼板の幅が1.6m、および表3は鋼板の幅が2.0mの場合である。
表4、表5は、図8に示したように上面ガイドが凹凸を有している例であり、パスラインPと上面ガイドとの距離が通板方向(パスライン方向)で変化する例である。表4が図8のh’=0.1mの例、表5が図8のh’=0.2mの例である。鋼板の幅はいずれも2.0mとした。
また、表4、表5の結果を表3の結果と比較すると、仮想流路断面積の拡大により排水性が向上していることもわかる。
10 製造装置
11 圧延機列
11g 最終スタンド
11gh ハウジング
11gr (ハウジング)立設部(側壁)
12 搬送ロール
13 ピンチロール
20 冷却装置
21 上面給水手段
21a 冷却ヘッダ
21b 導管
21c 冷却ノズル
22 下面給水手段
22a 冷却ヘッダ
22b 導管
22c 冷却ノズル
30 上面ガイド
35 下面ガイド
P パスライン
Claims (8)
- 熱間仕上げ圧延機列より下流側に配置され、パスラインの上方からパスラインに向けて冷却水を供給可能で、前記パスラインの方向に並列された複数の冷却ノズル、及び、前記パスラインと前記冷却ノズルとの間に配置される上面ガイド、を備える冷却装置であって、
前記冷却ノズルは、冷却水量密度0.16(m3/(m2・秒))以上で冷却水を噴射可能であるとともに、噴射する冷却水量密度をqm(m3/(m2・秒))、前記冷却ノズルのパスライン方向ピッチをL(m)、前記上面ガイドの下面と前記パスラインとの距離をhp(m)、均一冷却幅をWu(m)、前記冷却ノズルの前記パスライン方向1ピッチあたりの、鋼板幅方向に流れる排水の仮想流路断面積をS(m2)、としたとき、
が成立することを特徴とする冷却装置。 - 前記上面ガイドが、前記パスラインと前記上面ガイドとの距離が前記パスライン方向で変化する形態を有し、
前記hpの代わりに、前記上面ガイドの相当高さhp’が適用される請求項1に記載の冷却装置。 - 前記上面ガイド及び前記冷却ノズルの少なくとも一方が、上下方向に移動可能とされていることを特徴とする請求項1又は2に記載の冷却装置。
- 熱間仕上げ圧延機列、及び該熱間仕上げ圧延機列の下流側に配置される請求項1~3のいずれかに記載の冷却装置を備え、
前記冷却装置の上流側端部は前記熱間仕上げ圧延機列の最終スタンドの内側に配置されていることを特徴とする熱延鋼板の製造装置。 - 熱間仕上げ圧延機列より下流側に配置された冷却装置により、仕上げ圧延後に鋼板の少なくとも上面に冷却水を供給し、前記鋼板を冷却する工程を含む熱延鋼板の製造方法であって、
前記冷却装置に設けられる冷却ノズルからの冷却水量密度を、0.16(m3/(m2・秒))以上であるqa(m3/(m2・秒))とし、前記冷却ノズルの通板方向ピッチをL(m)、前記冷却装置に配置された上面ガイドの下面と通板される鋼板の上面との距離をha(m)、通板される前記鋼板の板幅をWa(m)、前記冷却ノズルの通板方向1ピッチあたりの、鋼板幅方向に流れる排水の仮想流路断面積をSa(m2)、としたとき、
が成立することを特徴とする熱延鋼板の製造方法。 - 前記上面ガイドが、前記鋼板と前記上面ガイドとの距離が前記通板方向で変化する形態を有するときには、前記haの代わりに、前記上面ガイドの相当高さha’を適用する請求項5に記載の熱延鋼板の製造方法。
- 前記上面ガイド、及び前記冷却ノズルの少なくとも一方が、上下方向に移動可能とされていることを特徴とする請求項5又は6に記載の熱延鋼板の製造方法。
- 前記冷却装置は、該冷却装置の上流側端部が前記熱間仕上げ圧延機列の最終スタンドの内側に配置されることを特徴とする請求項5~7のいずれかに記載の熱延鋼板の製造方法。
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CN105772518B (zh) * | 2014-12-19 | 2018-01-19 | 上海梅山钢铁股份有限公司 | 一种热轧高强钢应力减量化的两段稀疏层流冷却方法 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004066308A (ja) * | 2002-08-08 | 2004-03-04 | Jfe Steel Kk | 熱延鋼帯の冷却装置および熱延鋼帯の製造方法ならびに熱延鋼帯製造ライン |
JP4029871B2 (ja) | 2004-07-22 | 2008-01-09 | 住友金属工業株式会社 | 鋼板の冷却装置、熱延鋼板の製造装置及び製造方法 |
JP2011011217A (ja) * | 2009-06-30 | 2011-01-20 | Sumitomo Metal Ind Ltd | 鋼板の冷却装置、熱延鋼板の製造装置及び製造方法 |
JP2011020146A (ja) * | 2009-07-15 | 2011-02-03 | Sumitomo Metal Ind Ltd | 熱延鋼板の製造装置、及び鋼板の製造方法 |
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---|---|---|---|---|
JP4355278B2 (ja) * | 2004-11-22 | 2009-10-28 | 新日本製鐵株式会社 | 冷間圧延における潤滑油供給方法 |
JP4876781B2 (ja) * | 2005-08-30 | 2012-02-15 | Jfeスチール株式会社 | 鋼板の冷却設備および冷却方法 |
JP4853224B2 (ja) * | 2006-10-19 | 2012-01-11 | Jfeスチール株式会社 | 鋼板の冷却設備および冷却方法 |
JP4888124B2 (ja) * | 2007-01-11 | 2012-02-29 | Jfeスチール株式会社 | 鋼材の冷却装置および冷却方法 |
KR101337714B1 (ko) * | 2009-06-30 | 2013-12-06 | 신닛테츠스미킨 카부시키카이샤 | 강판의 냉각 장치, 열연 강판의 제조 장치 및 제조 방법 |
JP5573837B2 (ja) * | 2009-06-30 | 2014-08-20 | 新日鐵住金株式会社 | 熱延鋼板の冷却装置、冷却方法、製造装置、及び、製造方法 |
JP4674646B2 (ja) * | 2009-06-30 | 2011-04-20 | 住友金属工業株式会社 | 鋼板の冷却装置、熱延鋼板の製造装置、及び鋼板の製造方法 |
EP2959984B1 (en) * | 2009-11-24 | 2018-05-02 | Nippon Steel & Sumitomo Metal Corporation | Manufacturing method of hot-rolled steel sheet |
GB2484917A (en) * | 2010-10-25 | 2012-05-02 | Siemens Vai Metals Tech Ltd | Method of cooling a longitudinally profiled plate |
CN102228910A (zh) * | 2011-07-19 | 2011-11-02 | 东北大学 | 一种用于热轧带钢生产线的轧后超快速冷却系统 |
CN103635267B (zh) * | 2011-07-21 | 2015-08-05 | 新日铁住金株式会社 | 冷却装置、热轧钢板的制造装置及热轧钢板的制造方法 |
EP2969279B2 (en) * | 2013-03-11 | 2024-04-03 | Novelis Inc. | Improving the flatness of a rolled strip |
JP2016512174A (ja) * | 2013-03-15 | 2016-04-25 | ノベリス・インコーポレイテッドNovelis Inc. | 熱間金属圧延における指向性潤滑のための製造方法および装置 |
US9180506B2 (en) * | 2013-03-15 | 2015-11-10 | Novelis Inc. | Manufacturing methods and apparatus for targeted cooling in hot metal rolling |
-
2012
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004066308A (ja) * | 2002-08-08 | 2004-03-04 | Jfe Steel Kk | 熱延鋼帯の冷却装置および熱延鋼帯の製造方法ならびに熱延鋼帯製造ライン |
JP3770216B2 (ja) | 2002-08-08 | 2006-04-26 | Jfeスチール株式会社 | 熱延鋼帯の冷却装置および熱延鋼帯の製造方法ならびに熱延鋼帯製造ライン |
JP4029871B2 (ja) | 2004-07-22 | 2008-01-09 | 住友金属工業株式会社 | 鋼板の冷却装置、熱延鋼板の製造装置及び製造方法 |
JP2011011217A (ja) * | 2009-06-30 | 2011-01-20 | Sumitomo Metal Ind Ltd | 鋼板の冷却装置、熱延鋼板の製造装置及び製造方法 |
JP2011020146A (ja) * | 2009-07-15 | 2011-02-03 | Sumitomo Metal Ind Ltd | 熱延鋼板の製造装置、及び鋼板の製造方法 |
Non-Patent Citations (1)
Title |
---|
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Also Published As
Publication number | Publication date |
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EP2735383B1 (en) | 2016-05-25 |
US20140138054A1 (en) | 2014-05-22 |
JPWO2013012060A1 (ja) | 2015-02-23 |
CN103635267A (zh) | 2014-03-12 |
KR101514932B1 (ko) | 2015-04-23 |
EP2735383A4 (en) | 2015-04-15 |
EP2735383A1 (en) | 2014-05-28 |
BR112014000684A2 (pt) | 2017-02-14 |
KR20140016429A (ko) | 2014-02-07 |
JP5181137B2 (ja) | 2013-04-10 |
IN2014DN00104A (ja) | 2015-05-15 |
CN103635267B (zh) | 2015-08-05 |
US9486847B2 (en) | 2016-11-08 |
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