CN1290634C - Method and device for cooling steel sheet and method of manufacturing steel sheet - Google Patents
Method and device for cooling steel sheet and method of manufacturing steel sheet Download PDFInfo
- Publication number
- CN1290634C CN1290634C CNB038018128A CN03801812A CN1290634C CN 1290634 C CN1290634 C CN 1290634C CN B038018128 A CNB038018128 A CN B038018128A CN 03801812 A CN03801812 A CN 03801812A CN 1290634 C CN1290634 C CN 1290634C
- Authority
- CN
- China
- Prior art keywords
- steel plate
- cooling
- down rollers
- binding force
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/006—Pinch roll sets
-
- 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
- B21B45/0269—Cleaning
- B21B45/0275—Cleaning devices
- B21B45/0278—Cleaning devices removing liquids
- B21B45/0281—Cleaning devices removing liquids removing coolants
-
- 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
- C21D1/667—Quenching devices for spray quenching
-
- 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
- C21D1/673—Quenching devices for die quenching
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Metal Rolling (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The present invention provides a cooling method of steel plate comprising the steps of; transferring a steel plate horizontally with the steel plate surface being constrained by plural sets of upper and lower rollers; and water-cooling the steel plate being transferred from upside and downside of the steel plate surface, wherein a constraint force (t: ton) on the steel plate per one set of upper and lower rollers is not lower than P1 (=6.85x10<-7>S<3>L<0.65>) and lower then P2 (=1.2x10<-6>S<3>L<0.65>). Here, L (mm) is a distance between the sets of upper and lower rollers adjacent with each other, and S (mm) is a thickness of the steel plate. According to the invention, a hot-rolled steel plate can be cooled uniformly without camber due to inhomogeneous cooling or buckling due to constraint force.
Description
Technical field
The present invention relates to the method for cooling hot-rolled steel plate, particularly cool off light plate and do not produce warpage, buckling, evenly method, its device of cooling metal sheets and utilize its method to make the method for steel plate.
Background technology
Steel plate after the general hot rolling is the horizontal conveying of plate face of steel plate, adopts from the above-below direction spray cooling water of steel plate plate face and cools off.Generate inhomogeneous cooling this moment easily on steel plate, not only become the reason that steel plate produces residual stress and material fluctuation, and make steel plate produce warpage, causes operational fault.Because taking place, the steel plate of warpage need cause cost to increase in addition with the finishing procedure of rectifications such as forcing press.
Utilizing combination rolling and during Cooling Control is rolling, the steel plate of control cooling (TMCP) makes in recent years, to the increase in demand of the smooth steel plate that continuous manufacturing is eliminated such inhomogeneous cooling, carried out high-precision temperature control, distortion is little.Particularly in the manufacturing of steel plate, the situation of making the wide 5m of surpassing of plate is arranged, in any case will stop the cooling water flow that comes out from cooling device, realize evenly being cooled to for problem by so-called " removing water " to the steel plate part that does not need to cool off.
Remove water when cooling off, for example delivered the air nozzle that on steel plate configuration can easy on and off be moved in the clear 53-39508 communique, utilize injection air to remove the technology of water real opening about steel plate.This external reality is opened and has been delivered the method for removing water with rubber rollers clamping extruding in the clear 58-125611 communique.This external spy opens to have delivered in the clear 60-206516 communique to be provided with and removes damping roller and along the steel plate width direction (operating) water nozzle is set in its downstream one side, from the centre of steel plate plate width direction to two ends with remove the technology that the damping roller injection water is removed water.
Adopt above-mentioned which kind of method all can not remove water fully, make steel plate cooling fast, the cooling of the top and bottom of steel plate is not necessarily even, in the width and the length direction generation warpage of steel plate.
The warpage of width is wide by plate, the temperature of thickness of slab, top and bottom and decision amount of warpage of the temperature difference in the temperature-fall period and warp direction, warpage taking place, produce the gap at steel plate with except that between the damping roller, flows out a large amount of cooling waters, make removing water become difficult, increased inhomogeneous cooling.
In addition the temperature and the temperature difference in the temperature-fall period of the warpage of length direction, thickness of slab wide, top and bottom except plate, the transporting velocity of steel plate has also determined amount of warpage and warp direction, after this warpage takes place, can not stably carry steel plate, cause operational accident.Steel plate is by behind the cooling device in addition, and such warpage also happens occasionally.
Open to have delivered in the flat 10-263670 communique the spy and in cooling, hold onto steel plate plate face and cool off, make width not produce the technology of warpage.In the method, hold onto steel plate and cool off, so can remain on cooling under the smooth state with certain power more than the power.
Hold onto steel plate with certain power more than the power in the spy opens the method for flat 10-263670 communique, the own buckling of steel plate sometimes is in cooling device or by the big warpage of generation behind the cooling device, steel plate can not be carried, and causes accident.
Summary of the invention
The purpose of this invention is to provide and make hot rolled steel plate not because of method, its device of the even cooling metal sheets of inhomogeneous cooling warpage, buckling with utilize its method to make the method for steel plate.
Employing has with many group up-down rollers constraint steel plate plate faces carries the operation of steel plate in the horizontal direction and from the above-below direction of steel plate plate face the steel plate carrying is carried out the operation of water-cooled, and per 1 group of up-down rollers can reach this purpose to the binding force of steel plate for the cooling means of the steel plate below the above P2 of P1 (t) (t) that represents with following (1) and (2) formula.
P1＝6.85×10
-7S3L
0.65……(1)
P2＝1.2×10
-6S3L
0.65……(2)
Wherein, the distance between the adjacent up-down rollers group of L (mm) expression, the thickness of S (mm) expression steel plate.
The cooling means of this steel plate, can realize to the water-cooling apparatus of the steel plate carrying with for the binding force of adjusting the constraint steel plate makes the cooling device of steel plate of the device that the up-down rollers of many groups move up and down from steel plate plate face above-below direction the many groups up-down rollers by having the steel plate that is used for fettering conveying.
Description of drawings
Fig. 1 is the figure of 1 example of expression cooling device of steel plate of the present invention.
The specific embodiment
1 example of expression cooling device of steel plate of the present invention among Fig. 1.
In this cooling device, constituting by top roll 2 and lower roll 3, at interval steel plate 1 after rolling is carried in constraint between 20 groups of up-down rollers of 1m configuration.Use from the cooling water of pipe nozzle 5 ejections below the cooling water that the top utilization of steel plate at this moment sprays from gap nozzle 4, the steel plate and cool off respectively.3 top rolls 2 of expression and 2 cooling zones in Fig. 1.Each up-down rollers is spaced apart 1m in addition.
Above the steel plate 1 between up-down rollers, the top roll 2 of the one side top roll 2 of a side downstream sprays 2m along the direction of advance of steel plate 1 up and down respectively from 4 pairs of every steel plate unit ares of slit from the upstream
3The cooling water of/min.The following of steel plate 1 sprayed cooling water from pipe nozzle 5 on the other hand.
In 20 groups of up-down rollers, lower roll 3 is fixed, and the double as conveying roller is used.Top roll 2 diameters are 250mm, can oscilaltion with the interval of 0.5mm.The gap of top roll 2 and lower roll 3 is set at the thickness less than steel plate 1, and the reaction force of the extruding force of 6 pairs of top rolls 2 of words utilization opposing oil hydraulic cylinder that steel plate 1 passes through is applied to power on the steel plate 1 constraint steel plate 1.This bundle Fu Li measures with pressure sensor in addition, surpasses the aftermentioned value, adjusts the pressure of oil hydraulic cylinder 6.Adjust oil hydraulic cylinder 6 pressure, act on steel plate 1 corresponding to the binding force of this pressure, corresponding to the reaction force from steel plate 1, top roll 2 can move up and down according to steel plate 1.This position that is outside equipped with top roll 2 surpasses certain value, the mechanism that can keep out of the way upward rapidly.Be provided with again except that (operating) water nozzle 7, be used for removing from the steel plate end from the cooling water of the clearance leakage between top roll 2 and the steel plate 1.
The binding force to steel plate that per 1 group of up-down rollers is formed is that P1 (t) is above less than P2 (t), in the time of the constraint steel plate with per unit area 2m
3The top and bottom of the water yield difference cooling metal sheets that/min is above, temperature deviation is eliminated in the temperature diffusion, does not produce warpage, can remove reliably and anhydrate, and does not produce inhomogeneous cooling.Even therefore cooled steel plate does not have can obtain smooth state under the situation of constraint yet.
Use less than the binding force of P1 (t) and make the up-down rollers perk because of the warpage of width, cooling water spills, and produces inhomogeneous cooling.
The binding force that this external application P2 (t) is above, the steel plate buckling, this moment, steel plate kept smooth, but stopped camber of sheet behind the cooling water, can not carry in cooling device or extracted the residual very big distortion in back out from cooling device.
Occurred under the situation of the binding force more than the P2 (t), copied camber of sheet to move up and down when the up-down rollers of group more than making are used less than the power extruding of P2 (t), steel plate can be carried in cooling device, do not damaged device.Having for example can remaining big distortion when cold bed cools off after extracting out from cooling device again yet.Cooling becomes uneven on the other hand, and steel plate is pinned steel plate with big binding force when warpage, produces reverse warpage in cooling device, or can occur than wanting big warpage in advance in the stage that has gone out cooling device.In fact under the situation that the binding force more than the P2 (t) occurs, pressure sensor detects this reaction force, at first makes the pressure that acts on oil hydraulic cylinder 6 reduce pressure binding force less than P2 (t), its top roll lifting as a result.Do not have in the conveying of steel plate this moment under the situation of obstacle steel plate to be passed through.Reduce the pressure of oil hydraulic cylinder, even make top roll rise to for example certain height of 300mm, the reaction force of steel plate (binding force) also under the situation more than the P2 (t), opens wide top roll fast, and making binding force is zero, keeps out of the way upward.So for example following or top cooling water has not sprayed because of certain reason, or do not spray with the flow of stipulating, the cooling of steel plate is asymmetric up and down, on steel plate and below under the situation of the big temperature difference of generation, therefore,, top roll 2 is pressed upward so the reaction force of the steel plate that top roll is upwards lifted far surpasses P2 (t) because the temperature difference makes steel plate produce big warpage, top roll is kept out of the way and can resemble above-mentioned fast, can be prevented contingent equipment breakdown and device damage.
Above explanation is the situation of the binding force that forms about 1 group of up-down rollers, if also P2 (t) is above for the binding force of other up-down rollers, also can resembles and tackle above-mentioned.
Billet rolling becomes steel plate, corrects the back and cools off with steel plate cooling means of the present invention, more cooled steel plate is corrected, and can make and not produce warpage and buckling, smooth, the uniform steel plate of material in the cooling.
Embodiment
The cooling device of steel plate that uses Fig. 1 to represent changes steel plate thickness of slab S (mm), up-down rollers group distance L (mm), the binding force P (t) shown in the table 1 and carries out the steel plate cooling, has investigated the situation that produces warpage.The P1 and the P2 that obtain from above-mentioned (1), (2) formula are illustrated in the table 1 in the lump, and example satisfies P1＜P＜P2.
Steel plate with the present invention's cooling can both pass through cooling device smoothly, is cooled on this external cold bed also can keep good shape behind the normal temperature.
In example 4 and 6, binding force actual in the conveying has surpassed P2, and this moment, roller was lifted, and the above binding force of P2 disappears.Steel plate can pass through cooling device, has warpage originally on this external cold bed, eliminates but put cold temperature decline back warpage, becomes smooth.
On the other hand, use in the comparative example 1,2,5,7,9,11 that cools off less than the binding force of P1 constraint steel plate, the warpage of the width that produces in cooling device is lifted steel plate, between steel plate and roller, produce the gap, spill cooling water from here, generation local temperature inequality produces big warpage on cold bed.
In the comparative example 4,6,8,10,12 that the above binding force constraint steel plate of this external application P2 cools off, in cooling device, do not produce distortion, but on cold bed, place the warpage that cooling stage produces big length direction.Think that this is because steel plate is surrendered in cooling device, even after this flatly place cooling, along with the generation distortion that becomes uniform stage surrender part in temperature near normal temperature in the stage that has gone out cooling device.
Table 1
| Thickness of slab S Mm | Roller spacing L Mm | (1) the P1 t of formula | (2) the P2 t of formula | Actual P t | Cooled temperature inequality | Cooled distortion | Estimate | |
| Embodiment 1 | 12 | 1000 | 0.1 | 0.2 | 0.15 | ○ | ○ | ○ |
| Embodiment 2 | 12 | 2000 | 0.2 | 0.3 | 0.2 | ○ | ○ | ○ |
| Embodiment 3 | 25 | 1000 | 1.0 | 1.7 | 1.5 | ○ | ○ | ○ |
| Embodiment 4 | 25 | 2000 | 1.5 | 2.6 | 2 | ○ | ○ | ○ |
| Embodiment 5 | 40 | 1000 | 3.9 | 6.8 | 4 | ○ | ○ | ○ |
| Embodiment 6 | 40 | 2000 | 6.1 | 10.7 | 8 | ○ | ○ | ○ |
| Comparative example 1 | 12 | 1000 | 0.1 | 0.2 | 0.07 | × | × | × |
| Comparative example 2 | 12 | 1000 | 0.1 | 0.2 | 0.2 | ○ | × | × |
| Comparative example 3 | 12 | 2000 | 0.2 | 0.3 | 0.13 | × | × | × |
| Comparative example 4 | 12 | 2000 | 0.2 | 0.3 | 0.4 | ○ | × | × |
| Comparative example 5 | 25 | 1000 | 1.0 | 1.7 | 0.6 | × | × | × |
| Comparative example 6 | 25 | 1000 | 1.0 | 1.7 | 2 | ○ | × | × |
| Comparative example 7 | 25 | 2000 | 1.5 | 2.6 | 1.1 | × | × | × |
| Comparative example 8 | 25 | 2000 | 1.5 | 2.6 | 3 | ○ | × | × |
| Comparative example 9 | 40 | 1000 | 3.9 | 6.8 | 3 | × | × | × |
| Comparative example 10 | 40 | 1000 | 3.9 | 6.8 | 8 | ○ | × | × |
| Comparative example 11 | 40 | 2000 | 6.1 | 10.7 | 5 | × | × | × |
| Comparative example 12 | 40 | 2000 | 6.1 | 10.7 | 12 | ○ | × | × |
Claims (3)
1. the cooling means of a steel plate, has the operation of carrying steel plate in the horizontal direction with many group up-down rollers constraint steel plate plate faces, with the operation of the steel plate carrying being carried out water-cooled from the above-below direction of steel plate plate face, per 1 group of up-down rollers is above less than P2 (t) for the P1 (t) that represents with following (1) formula and (2) formula to the binding force of described steel plate
P1＝6.85×10
-7S
3L
0.65……(1)
P2＝1.2×10
-6S
3L
0.65……(2)
Wherein, L represents the distance between adjacent up-down rollers group, and S represents the thickness of steel plate;
Also have: to the binding force of steel plate is P2 (t) when above, the operation of copying described camber of sheet to move up and down when making many group up-down rollers use power extruding less than P2 (t); Surpass the boundaries of stipulating with the amounts of moving up and down of the group up-down rollers how, described up-down rollers is opened wide, making the binding force to steel plate is zero operation.
2. the manufacture method of a steel plate, have billet rolling become the operation of steel plate, operation that described steel plate is corrected, the steel plate after the described rectification with the operation of the described steel plate cooling means cooling of claim 1 and the operation that described cooled steel plate is corrected.
3. the manufacture method of steel plate as claimed in claim 2 in refrigerating work procedure, is used per unit area 2m respectively
3Below the top and steel plate of the water yield cooling metal sheets of/min.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002142482A JP3925789B2 (en) | 2002-05-17 | 2002-05-17 | High temperature steel sheet cooling method, high temperature steel sheet cooling device, and steel sheet manufacturing method |
| JP142482/2002 | 2002-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1610584A CN1610584A (en) | 2005-04-27 |
| CN1290634C true CN1290634C (en) | 2006-12-20 |
Family
ID=29544985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038018128A Expired - Lifetime CN1290634C (en) | 2002-05-17 | 2003-05-13 | Method and device for cooling steel sheet and method of manufacturing steel sheet |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1508388B1 (en) |
| JP (1) | JP3925789B2 (en) |
| KR (1) | KR100598006B1 (en) |
| CN (1) | CN1290634C (en) |
| DE (1) | DE60324272D1 (en) |
| TW (1) | TWI222903B (en) |
| WO (1) | WO2003097263A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007007676A (en) * | 2005-06-29 | 2007-01-18 | Jfe Steel Kk | Method for cooling material to be rolled in slab rolling line and method for rolling slab using the same |
| DE102007057278A1 (en) * | 2007-08-04 | 2009-02-05 | Sms Demag Ag | Method and apparatus for equalizing the heat transfer of a cast product during its reimbursement on the metal conveyor belt of a horizontal strip caster |
| JP5353260B2 (en) * | 2009-01-19 | 2013-11-27 | Ｊｆｅスチール株式会社 | Winding equipment and winding method for high-strength thick hot-rolled steel sheet |
| CN102676787B (en) * | 2012-06-15 | 2014-04-16 | 中冶赛迪工程技术股份有限公司 | Sheet metal quenching device |
| KR101666814B1 (en) | 2015-07-21 | 2016-10-17 | 주식회사 포스코 | Apparatus for controlling coolant |
| JP6720894B2 (en) | 2017-03-02 | 2020-07-08 | Ｊｆｅスチール株式会社 | Steel sheet cooling method, steel sheet cooling device, and steel sheet manufacturing method |
| CN107557550B (en) * | 2017-08-22 | 2019-07-16 | 大连理工大学 | A kind of intensity adjustable high-strength steel automobile part preparation method |
| EP3653312B1 (en) * | 2017-09-28 | 2022-08-17 | JFE Steel Corporation | Steel plate manufacturing equipment and steel plate manufacturing method |
| CN108515380A (en) * | 2018-03-05 | 2018-09-11 | 蚌埠市大禹机床制造有限公司 | A kind of cutting off machine of automatic sensing conveying |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3304816B2 (en) * | 1997-03-26 | 2002-07-22 | 日本鋼管株式会社 | Cooling method for hot steel sheet and cooling device for hot steel sheet |
| JP3282713B2 (en) * | 1997-06-27 | 2002-05-20 | 日本鋼管株式会社 | Cooling method for hot steel sheet |
| JP3345774B2 (en) * | 1998-04-10 | 2002-11-18 | 日本鋼管株式会社 | Method and apparatus for cooling high-temperature steel sheet |
| JP2000001719A (en) * | 1998-06-16 | 2000-01-07 | Nkk Corp | Device for cooling high temperature steel plate |
| WO2001064362A1 (en) * | 2000-03-01 | 2001-09-07 | Nkk Corporation | Device and method for cooling hot rolled steel band and method of manufacturing the hot rolled steel band |
-
2002
- 2002-05-17 JP JP2002142482A patent/JP3925789B2/en not_active Expired - Fee Related
-
2003
- 2003-05-13 WO PCT/JP2003/005933 patent/WO2003097263A1/en active Application Filing
- 2003-05-13 EP EP03728060A patent/EP1508388B1/en not_active Expired - Lifetime
- 2003-05-13 KR KR1020047009443A patent/KR100598006B1/en active IP Right Grant
- 2003-05-13 DE DE60324272T patent/DE60324272D1/en not_active Expired - Lifetime
- 2003-05-13 CN CNB038018128A patent/CN1290634C/en not_active Expired - Lifetime
- 2003-05-16 TW TW092113312A patent/TWI222903B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1508388A1 (en) | 2005-02-23 |
| KR20040062691A (en) | 2004-07-07 |
| JP2003334605A (en) | 2003-11-25 |
| WO2003097263A1 (en) | 2003-11-27 |
| CN1610584A (en) | 2005-04-27 |
| EP1508388A4 (en) | 2005-08-17 |
| TWI222903B (en) | 2004-11-01 |
| KR100598006B1 (en) | 2006-07-13 |
| JP3925789B2 (en) | 2007-06-06 |
| TW200307580A (en) | 2003-12-16 |
| EP1508388B1 (en) | 2008-10-22 |
| DE60324272D1 (en) | 2008-12-04 |
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