EP3555324B1 - Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques - Google Patents

Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques Download PDF

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Publication number
EP3555324B1
EP3555324B1 EP17829617.4A EP17829617A EP3555324B1 EP 3555324 B1 EP3555324 B1 EP 3555324B1 EP 17829617 A EP17829617 A EP 17829617A EP 3555324 B1 EP3555324 B1 EP 3555324B1
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EP
European Patent Office
Prior art keywords
strip
nozzles
jets
row
cooling
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.)
Active
Application number
EP17829617.4A
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German (de)
English (en)
French (fr)
Other versions
EP3555324A1 (fr
Inventor
Florent CODE
Eric MAGADOUX
Miroslav RAUDENSKI
Jaroslav HORSKI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fives Stein SA
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Fives Stein SA
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Publication date
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Publication of EP3555324A1 publication Critical patent/EP3555324A1/fr
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/06—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in annular, tubular or hollow conical form
    • 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
    • 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
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5735—Details

Definitions

  • the invention relates to continuous lines for the production of metal strips. It relates more particularly to the rapid cooling sections of lines for annealing or galvanizing a steel strip, in which the strip is cooled at a rate of between 400° C./sec and 1200° C./s.
  • the strip enters at a temperature of around 800° C. and exits at a temperature close to ambient temperature, or at an intermediate temperature.
  • This cooling step is essential to obtain the desired metallurgical and mechanical properties.
  • very rapid cooling rates are necessary, of the order of 1000° C./s. These speeds are in particular necessary at high temperature to form martensite, especially when the band is between 800 and 500°C approximately.
  • Leidenfrost phenomenon Due to the so-called Leidenfrost phenomenon, it is in this temperature range that it is particularly difficult to achieve significant cooling slopes when cooling with water.
  • the principle of the so-called Leidenfrost phenomenon is that a thin film of vapor is created on the surface of the strip, which constitutes a brake on the heat exchange between the cooling fluid and the strip.
  • the difficulty therefore lies in being able to cool relatively thick strips very quickly while ensuring great flexibility and ease of operation of the line, in order to be able to produce on the same installation other types of steel that do not require rapid cooling rates.
  • gas cooling and water cooling such as JP S61 153236 A and or JP S60 184635 A ).
  • Cooling by spraying a water mist using bi-fluid nozzles allows a wide flexibility, but is limited in performance. In fact, the maximum performances peak at around 500°C/s for a strip 2 mm thick with a usual water pressure of around 5 bars. This cooling rate is also less when the strip is above the Leidenfrost temperature.
  • the advantage of this technology is to have a very high flexibility. By adjusting the gas and water pressures, it is in fact possible to cover the entire cooling range, up to the maximum value.
  • Cooling by water spray using mono-fluid nozzles has substantially the same characteristics.
  • the cooling limit is also at 500° C./s in the usual pressure range, that is to say up to approximately 5 bars.
  • This cooling offers less flexibility, especially for low cooling rates. Indeed, for proper operation, the water pressure at the nozzles cannot fall below a certain value, of the order of 0.5 bar. At this pressure, the cooling is already beyond 100°C/s for a strip 2 mm thick. Thus, this technology is not able to offer slow cooling with speeds comparable to cooling by gas.
  • Cooling by quenching in a tank can make it possible, under certain agitation conditions, to achieve cooling performance of the order of 1000°C/s for strips 2 mm thick.
  • the main flaw of this technology is its lack of flexibility. Indeed, the strip entering a water tank, it is very difficult to control the cooling rate and the final temperature of the strip. It is possible to adjust the agitation of the tank, the water temperature, or the length of the submerged strip, but this has a moderate effect on the cooling rate of the strip. It is also not possible to adjust the cooling transversely.
  • this technology requires the use of a rather expensive submerged roller.
  • the tank must then be purged, or bypassed, which requires a fairly cumbersome process.
  • the invention makes it possible to cool a strip of 2 mm thickness in a wide range of cooling rates up to 1000°C/s in the temperature range 800 - 500°C, by making it possible to adjust transversely the cooling efficiency for good homogeneity across the bandwidth.
  • a rapid cooling section of a continuous metal strip processing line arranged to cool the strip by spraying it with a liquid, or a mixture of a gas and a liquid, by means of nozzles arranged on either side of the strip with respect to its running plane, characterized in that, in the running direction of the strip, the cooling section comprises at at least one row of flat jet nozzles, followed by at least one row of conical jet nozzles, the rows of nozzles being arranged transversely to the running plane of the strip.
  • the at least one row of flat jet nozzles can be mono-fluid.
  • the at least one row of nozzles with conical jets can be mono-fluid.
  • the rapid cooling section may further comprise at least one row of bi-fluid jet nozzles and which may follow, in the direction of scrolling of the strip, the at least one row of nozzles with conical jets.
  • the row of nozzles can be arranged transversely to the running plane of the strip.
  • Mono-fluid nozzles can be arranged to project a liquid onto the strip.
  • Bi-fluid nozzles can be arranged to project onto the strip a mist composed of a mixture of gas and liquid.
  • the cooling section according to the invention is arranged so that the strip circulates vertically from bottom to top.
  • the cooling section may comprise, upstream of the row of flat jet nozzles in the direction of travel of the strip, another row of flat jet nozzles whose flat jets are inclined longitudinally with respect to a transverse plane and perpendicular to the strip at an angle B greater than 15°.
  • the rapid cooling section may also comprise, upstream of the other flat jet nozzles, in the direction of travel of the strip, yet another row of flat jet nozzles whose flat jets are inclined longitudinally by a angle C with respect to the plane transverse and perpendicular to the strip, angle C being greater than angle B.
  • the flat jet nozzles and more precisely those of the row and/or the other row and/or the still row, can be inclined transversely with respect to a transverse plane and perpendicular to the strip so that the flat jets are inclined at an angle A relative to the plane greater than 5° and less than 15°.
  • the liquid, or the mixture of a gas and a liquid is non-oxidizing for the strip.
  • the cooling section does not include, in the running direction of the strip, nozzles with conical jets arranged upstream of nozzles with flat jets.
  • each of the conical jet nozzles of the cooling section according to the invention is arranged, in the running direction of the strip, downstream from each of the flat jet nozzles.
  • the cooling section does not include, in the running direction of the strip, flat jet nozzles arranged downstream of conical jet nozzles.
  • each of the flat jet nozzles of the cooling section according to the invention is arranged, in the running direction of the strip, upstream of each of the conical jet nozzles.
  • a method for rapidly cooling a continuous line for processing metal strips arranged to cool the strip by spraying it with a liquid, or a mixture of a gas and a liquid, by means of nozzles arranged on either side of the strip with respect to its running plane, characterized in that, in the running direction of the strip, the cooling method comprises at least one projection originating from a row of flat jet nozzles, followed, in time, by at least one projection originating from a row of conical jet nozzles, the rows of nozzles being arranged transversely to the running plane of the web .
  • a longitudinal part of the strip there is no projection coming from a row of nozzles with conical jets, prior to a projection coming from a row of nozzles with flat jets.
  • the ultra-rapid cooling of a strip 2 mm thick at more than 1000°C/s between 800 and 500°C takes place in two successive stages: First, the strip passes in front of the first rows of mono-fluid nozzles with flat jets, supplied with water at high pressure of the order of 10 bars. These flat jet nozzles allow a strong and narrow impact on the web and therefore a rapid decrease in temperature. The impact of these nozzles on the strip being narrow, that is to say on a small strip surface, this leads to the use of a high water flow to cover the targeted strip surface and therefore large energy consumption at the water pumps.
  • the cooling rate of the strip can be kept constant along the rapid cooling section according to the invention, with an identical cooling slope with the flat jet nozzles and the conical jet nozzles, or it can be different according to the nature of the steel and the mechanical properties concerned.
  • cooling to ambient temperature or to a desired intermediate temperature can then be carried out by spraying a mist of water using bi-fluid nozzles projecting a mixture of gas and water onto the strip.
  • this combination of cooling will allow total flexibility.
  • the cooling zone comprising the mono-fluid nozzles with flat jets and the mono-fluid nozzles with conical jets being short (1 to 2 meters maximum), it is quite possible to turn off this section and carry out all cooling with bi-fluid nozzles projecting a mixture of water and gas.
  • the nozzles according to the invention are point nozzles, that is to say they only cover a portion of the strip width. It is thus possible to have a fine transverse adjustment of the cooling of the band which is not possible when the cooling is carried out by means of nozzles covering the whole width of the strip, or a large strip width, for example half the strip width. For narrow swaths, the use of point nozzles can also stop those that are beyond the swath width, thus limiting the projected flow rate and the electrical consumption of the pump.
  • the nozzles are advantageously staggered transversely so as to increase the uniformity of the cooling.
  • the quincunx between the nozzles is offset on each side of the strip so as not to have two nozzles facing each other.
  • a cross section of a strip 1 can be seen schematically shown being cooled by spraying a liquid by means of nozzles 2 arranged on either side of the strip, according to an embodiment of the 'invention.
  • nozzles 2 arranged on either side of the strip, according to an embodiment of the 'invention.
  • the transverse pitch between the nozzles and the distance between the nozzles and the strip are adjusted according to the opening angle of the jets 3 so as to cover the entire surface of the strip and to obtain uniform transverse cooling.
  • we have a transverse overlap of the jets over the strip width we have a transverse overlap of the jets over the strip width. The extent of this overlap is limited to that necessary to ensure that the entire width of the strip is well covered by the jets while having homogeneous transverse cooling of the strip.
  • FIG. 2 of the accompanying drawings one can see schematically represented, a longitudinal view on one side of a portion of a strip 1 running in a cooling section by spraying a liquid according to an embodiment of the invention.
  • the tape runs from bottom to top.
  • the strip On entering the cooling section, the strip first encounters two rows 4, 5 of nozzles 9, 10 with flat jets 14, 15 of high flow velocity, the function of which is to expel the liquid present on the strip due to the of a runoff. This results from the flow along the strip of part of the liquid projected onto the strip by the nozzles situated above these two rows 4, 5 of flat jets.
  • These two rows of flat jets are inclined longitudinally in the running direction of the strip with respect to a plane transverse and perpendicular to the strip.
  • the inclination of the first row 4 of flat jets 14 is greater than that of the second row 5 so as to promote the detachment of the liquid from the strip.
  • the second row 5 of flat jets is inclined at an angle B of 15° and the first row is inclined at an angle C of 45°.
  • the band then encounters, in the running direction F of the band, four successive rows 6 of flat jets 16 .
  • These jets ensure rapid cooling of the belt. They are perpendicular to the surface of the strip and slightly inclined transversely with respect to the transverse plane and perpendicular to the strip by an angle A so as to limit the interaction between the jets while ensuring that the whole width of the strip is well covered by jets.
  • This inclination remains limited so as not to increase the number of nozzles over the strip width and not to increase the transverse distance between two rows of nozzles necessary to avoid interaction between the jets of the two rows. This inclination is between 5° and 15° and is advantageously 8°.
  • the number of successive rows 6 of nozzles 11 with flat jets 16 depends on the cooling profile of the desired strip, the characteristics of the strip, in particular its maximum thickness, the maximum running speed of the strip and the characteristics of the jets , in particular the flow rate and the velocity of the liquid.
  • the strip then encounters four successive rows 7 of conical jets 17 . These jets are perpendicular to the strip surface. Again, the number of successive rows 7 of nozzles 12 with flat jets 17 depends on the cooling profile of the desired strip, the characteristics of the strip, the maximum running speed of the strip and the characteristics of the jets.
  • the density of the jets on the surface of the strip is determined according to the cooling profile of the desired strip and the heat exchange performance of the jets.
  • the nozzle supply pressure and the coolant temperature are parameters that can be adjusted to obtain the desired cooling slope. These parameters can be kept constant along the cooling section or they can be variable, depending on the desired thermal objective.
  • the supply pressure of the nozzles 9, 10 can be higher so as to facilitate the evacuation of the runoff water.
  • the distance between the belt and the nozzles is defined by taking into account several parameters, in particular the characteristics of the jets, the floating of the belt and the accesses necessary for maintenance. This distance is for example between 150 and 300 mm. It is obviously taken into account to define the pitch between the nozzles and the supply pressure of the nozzles.
  • FIG. 3 there can be seen schematically represented a longitudinal and lateral view of the portion of a strip 1 running in the cooling section represented in figure 2 .
  • This figure shows more clearly the longitudinal inclination of the first two rows of nozzles in the running direction F of the strip, the other nozzles being perpendicular to the strip.
  • the bi-fluid nozzles are punctual and the jets obtained are conical. Since the cooling conditions are less critical for the slower cooling obtained by these bi-fluid nozzles, slotted nozzles covering the whole width of the strip, or part of it, can also be used.
  • This system of water knives is not essential for descending bands. For these, however, it is advantageous to place a system of water knives after the last row of nozzles, at the outlet of the cooling section, in order to stop the cooling in a clear way by avoiding that which would result from the runoff of the water.
  • the longitudinal distance from the first row of nozzles is taken at the level of the median axis of impact of the jet on the web.
  • the distance between the nozzles and the strip is 250 mm for all the nozzles.

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  • 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)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP17829617.4A 2016-12-14 2017-12-08 Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques Active EP3555324B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1662421A FR3060021B1 (fr) 2016-12-14 2016-12-14 Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques
PCT/EP2017/082073 WO2018108747A1 (fr) 2016-12-14 2017-12-08 Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques

Publications (2)

Publication Number Publication Date
EP3555324A1 EP3555324A1 (fr) 2019-10-23
EP3555324B1 true EP3555324B1 (fr) 2022-10-05

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ID=57909758

Family Applications (1)

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EP17829617.4A Active EP3555324B1 (fr) 2016-12-14 2017-12-08 Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques

Country Status (11)

Country Link
US (1) US11230748B2 (ja)
EP (1) EP3555324B1 (ja)
JP (1) JP7021219B2 (ja)
KR (1) KR102431023B1 (ja)
CN (1) CN110168117A (ja)
ES (1) ES2934248T3 (ja)
FI (1) FI3555324T3 (ja)
FR (1) FR3060021B1 (ja)
PL (1) PL3555324T3 (ja)
PT (1) PT3555324T (ja)
WO (1) WO2018108747A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017127470A1 (de) * 2017-11-21 2019-05-23 Sms Group Gmbh Kühlbalken und Kühlprozess mit variabler Abkühlrate für Stahlbleche
SE543963C2 (en) * 2020-02-28 2021-10-12 Baldwin Jimek Ab Spray applicator and spray unit comprising two groups of spray nozzles

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300198A (en) * 1963-12-27 1967-01-24 Olin Mathieson Apparatus for quenching metal
US3997376A (en) * 1974-06-19 1976-12-14 Midland-Ross Corporation Spray mist cooling method
US4407487A (en) * 1980-01-15 1983-10-04 Heurtey Metallurgie Device for cooling metal articles
JPS60121229A (ja) * 1983-12-01 1985-06-28 Nippon Steel Corp 高温鋼板の冷却方法
JPS60184635A (ja) * 1984-02-29 1985-09-20 Ishikawajima Harima Heavy Ind Co Ltd 金属板冷却装置
JPS61153236A (ja) * 1984-12-26 1986-07-11 Kobe Steel Ltd 厚鋼板のオンライン冷却設備
US5640872A (en) * 1994-07-20 1997-06-24 Alusuisse-Lonza Services Ltd. Process and device for cooling heated metal plates and strips
WO2004110662A1 (ja) * 2003-06-13 2004-12-23 Jfe Steel Corporation 厚鋼板の制御冷却方法、その制御冷却方法で製造された厚鋼板及びその冷却装置
AT414102B (de) * 2004-08-04 2006-09-15 Ebner Ind Ofenbau Vorrichtung zum kühlen eines blechbandes
ATE441731T1 (de) * 2005-08-01 2009-09-15 Ebner Ind Ofenbau Vorrichtung zum kühlen eines metallbandes
US8012406B2 (en) * 2006-09-12 2011-09-06 Nippon Steel Corporation Method of arranging and setting spray cooling nozzles and hot steel plate cooling apparatus
CN102548680B (zh) * 2009-06-30 2015-04-01 新日铁住金株式会社 热轧钢板的冷却装置、冷却方法、制造装置及制造方法

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CN110168117A (zh) 2019-08-23
JP2020513480A (ja) 2020-05-14
ES2934248T3 (es) 2023-02-20
KR20190094384A (ko) 2019-08-13
US11230748B2 (en) 2022-01-25
US20200071788A1 (en) 2020-03-05
FI3555324T3 (en) 2023-01-13
JP7021219B2 (ja) 2022-02-16
EP3555324A1 (fr) 2019-10-23
FR3060021A1 (fr) 2018-06-15
FR3060021B1 (fr) 2018-11-16
PT3555324T (pt) 2023-01-02
WO2018108747A1 (fr) 2018-06-21
PL3555324T3 (pl) 2023-01-23
KR102431023B1 (ko) 2022-08-11

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