EP4422811B1 - Système de refroidissement rapide de substrat - Google Patents

Système de refroidissement rapide de substrat

Info

Publication number
EP4422811B1
EP4422811B1 EP22812899.7A EP22812899A EP4422811B1 EP 4422811 B1 EP4422811 B1 EP 4422811B1 EP 22812899 A EP22812899 A EP 22812899A EP 4422811 B1 EP4422811 B1 EP 4422811B1
Authority
EP
European Patent Office
Prior art keywords
cooling
metal substrate
header
coolant
removal device
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
EP22812899.7A
Other languages
German (de)
English (en)
Other versions
EP4422811A1 (fr
Inventor
Frank Su
Renato Rufino Xavier
David Anthony Gaensbauer
Timothy Francis STANISTREET
Louis Mitchell Nazro
David Edward Gantzer
Carlos EBOLI
Curtis Eddie
David Skingley Wright
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.)
Novelis Inc Canada
Novelis Inc
Original Assignee
Novelis Inc Canada
Novelis Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Novelis Inc Canada, Novelis Inc filed Critical Novelis Inc Canada
Publication of EP4422811A1 publication Critical patent/EP4422811A1/fr
Application granted granted Critical
Publication of EP4422811B1 publication Critical patent/EP4422811B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
    • 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
    • B21B45/0206—Coolants
    • 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
    • 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
    • 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
    • B21B2045/0212—Cooling devices, e.g. using gaseous coolants using gaseous coolants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B21B2261/21—Temperature profile
    • 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

Definitions

  • FIG. 1 illustrates an example of a metal processing system 100 that includes at least one work stand 102 of a rolling mill 103 and a cooling system 104 according to various embodiments.
  • the rolling mill 103 is a cold rolling mill, although in other examples, the rolling mill 103 may be a warm rolling mill and/or a hot rolling mill as desired. While a single work stand 102 is illustrated, it will be appreciated that in other examples the rolling mill 103 may include a plurality of work stands 102, such as two work stands 102, three work stands 102, four work stands 102, or any other desired number of work stand 102.
  • the work stand 102 includes a pair of vertically aligned work rolls 108A-B. In the example of FIG.
  • the work stand 102 also includes backup rolls 106A-B that support the work rolls 108A-B.
  • the work stand 102 may also include intermediate rolls.
  • a roll gap 105 is defined between the work rolls 108A-B, and metal substrate 110 such as an aluminum or aluminum alloy sheet is passed through the roll gap 105 along a passline in a processing direction (represented by arrow 107).
  • the work stand 102 is the last or exit stand of the rolling mill 103, and the metal substrate 110 exiting the work stand 102 is passed to the cooling system 104 before it is coiled as a coil 112 with a rewinder.
  • FIG. 1 illustrates the metal substrate 110 being coiled into the coil 112 in an over-wind configuration, but it will be appreciated that in other examples, the metal substrate 110 may be coiled in an under-wind configuration (see FIG. 2 ).
  • the cooling header 114 may optionally include one or more nozzles that collectively extend across a width (or a portion of a width) of the metal substrate 110.
  • the nozzles are configured to dispense the coolant as micronized droplets or a super fine mist and may be various suitable types of nozzles for dispensing the coolant as micronized droplets or the super fine mist.
  • the micronized droplets increase the heat transfer efficiency (and thus cooling rate) of the coolant, provide a more uniform coolant distribution on the metal substrate 110, and reduce the Leidenfrost effect, which may occur when material having a temperature higher than the boiling temperature of the coolant is immersed or contacted with the coolant.
  • the micronized droplets may provide improved heat transfer at a line speed less than about 1800 m/min.
  • Such cooling features may include, but are not limited to, controlling a coolant droplet size, providing an electrical charge of the coolant and/or the metal substrate, and/or providing a predetermined surface geometry of the metal substrate.
  • the cooling feature may modify the Leidenfrost point to reduce and/or prevent the formation of a vapor layer while the metal substrate is at the aforementioned temperatures and/or being cooled from a first temperature to a second temperature that is less than the first temperature.
  • the metal processing system 100 may use non-neutral electrical charges when applying the coolant.
  • the metal processing system 100 may induce an electrical charge on the surface of the metal substrate 110 prior to applying coolant to the metal substrate 110 using the cooling system 304, and the coolant applied to the metal substrate 110 may have an electrical charge that is opposite the electrical charge on the surface of the metal substrate 110.
  • FIG. 8 illustrates an example of the metal substrate 110 when the cooling feature includes a non-neutral electric charge 803 of the coolant 801 and an opposite non-neutral electric charge 805 of the surface of the metal substrate 110.
  • the electric charge 803 of the coolant 801 is negative and the electric charge 805 of the surface of the metal substrate 110 is positive, although embodiments exist where the charge profile is reversed.
  • the attractive forces that form between coolant electric charge 803 and metal substrate electric charge 805 modify the Leidenfrost point of the coolant 801, changing the temperature at which a trapped vapor layer forms.
  • the metal processing system 100 may use a surface geometry of the metal substrate 110 to modify the Leidenfrost point of the coolant.
  • the surface geometry of the metal substrate 110 e.g., a roughness, surface profile, flatness distribution, etc.
  • FIG. 9 illustrates an example of the metal substrate 110 when the cooling feature includes surface texture 907 on the metal substrate 110.
  • the surface texture 907 provides a roughness profile of metal substrate 110 that may lend itself to breaking up a vapor layer that may form when metal substrate 110 is above a Leidenfrost point of the coolant 901 and without surface modifications.
  • the surface of metal substrate 110 may be modified at any point prior to cooling using various means or techniques, including but not limited to textured rolls, imparting abrasions, or other means not limited by this disclosure. The modifications may occur at a point upstream of the cooling system 104.
  • altered surface properties or geometries that help alleviate the Leidenfrost effect include, but are not limited to, a roughness, a distribution of micro-valleys, and/or other surface-area altering modifications.
  • modifying the surface geometry may mitigate the effects of the Leidenfrost effect by creating greater amounts of surface area for the coolant 901 to interface with the metal substrate 110.
  • the surface profile allows downward surface tension to overcome some of the effects of an upwards vapor layer, resulting in the desired nucleate boiling, and thus, rapid cooling.
  • cooling system 104 need not necessarily use any of the aforementioned techniques to dispense coolant on the metal substrate 110.
  • each of the nozzles of the cooling header 114 may be independently controlled by the controller 130 to provide a desired cooling profile.
  • the exhaust system 118 is positioned downstream from the cooling header 114.
  • the exhaust system 118 is a predetermined distance downstream from the cooling header 114 that corresponds to a desired cooling rate and/or cooling duration at a predetermined line speed.
  • the exhaust system 118 may be positioned at various distances relative to the cooling header 114 as desired.
  • the removal device 120 may be at least a 3500 CFM vacuum, such as a 4000 CFM vacuum, although in other embodiments, the air flowing through vacuum system may be other rates as desired. In some non-limiting examples, the vacuum may further assist with cooling of the metal substrate 110. In other cases, other suitable removal devices 120 may be utilized.
  • the coolant is water
  • the removal device 120 is configured to remove the heated coolant in the form of steam.
  • the removal device 120 may be dimensioned to extend across the width (or a portion of the width) of the metal substrate 110 such that the heated coolant may be removed across the width (or a portion of the width) of the metal substrate 110.
  • the cooling system 204 is substantially similar to the cooling system 104 except that the cooling system 204 includes the cooling header 114 below the passline of the metal substrate 110 and on the same side of the passline as the removal device 120. Compared to the cooling system 104, the cooling system 204 also includes a temperature sensor 232 that is substantially similar to the temperature sensor 128 but is upstream from the cooling header 114. In various cases, the controller 130 may be communicatively coupled to the temperature sensor 232 and may control the cooling header 114 based at least partially on a detected temperature profile from the temperature sensor 232. As one non-limiting example, the temperature sensor 232 may detect a temperature profile across the width of the metal substrate 110 after it exits the work stand 102 and prior to cooling with the cooling system 204.
  • the cooling system 304 is substantially similar to the cooling system 204 and includes a cooling header 314, an exhaust system 318 with the removal device 320 and the removal device 322, and a temperature sensor 328 downstream from the cooling header 314. As represented by the triangle 334, the temperature sensor 328 may detect a temperature profile of the metal substrate 310 across the width of the metal substrate 310. Although not illustrated in FIGS. 3 and 4 , the cooling system 304 also includes a controller that is communicatively coupled with the cooling header 314 and the temperature sensor 328. Compared to the cooling system 204, the cooling system 304 does not include a temperature sensor upstream from the cooling header 314.
  • the cooling system 304 includes a recirculation system 338 that is in fluid communication with the exhaust system 318 and the cooling header 314.
  • coolant that is collected by the exhaust system 318 may be treated or otherwise prepared for subsequent cooling by the recirculation system 338, and the recirculation system 338 may recirculate the treated coolant back to the cooling header 314.
  • FIGS. 5 and 6 illustrate a metal processing system 500 with the rolling mill 303 and a cooling system 504 according to various embodiments.
  • the cooling system 504 is substantially similar to the cooling system 304 and includes a cooling header 514, an exhaust system 518 with a removal device 520, and the temperature sensor 328 downstream from the cooling header 514. Similar to the cooling system 304, the cooling system 504 may include a controller that is communicatively coupled with the cooling header 514 and the temperature sensor 328.
  • the cooling header 514 may include a plurality of nozzles 536, and the cooling header 514 is dimensioned to extend across the width of the metal substrate 310.
  • the number, type, and arrangement of nozzles 536 should not be considered limiting.
  • the nozzles 536 may are a different style and/or type compared to the nozzles 336, although they need not be in other embodiments.
  • the controller of the cooling system 504 may control the nozzles 536 as desired, including independently from one another or nozzles may be controlled in conjunction.
  • the removal device 520 is a vacuum nozzle that optionally may extend across the width of the metal substrate 310.
  • the removal device 520 includes a receiving portion 521 that is elongated in the direction of travel of the metal substrate 310 and optionally proximate to the cooling header 514 to increase coolant collection, which may be in the form of steam.
  • the cooling system 504 may avoid and/or minimize cooling at the edges of the metal substrate 310 to minimize or reduce the possibility that tight edges are created in the metal substrate 310, which may lead to strip break.
  • a method of controlling the temperature of a metal substrate with a cooling system is also provided. While reference will be made to the cooling system 104, it will be appreciated that the following description is applicable to any of the cooling systems described herein, as well as other cooling systems within this disclosure.
  • the method of controlling the temperature of the metal substrate 110 includes receiving the metal substrate 110 at the cooling system 204 and with the metal substrate 110 moving at a predetermined line speed.
  • the predetermined line speed may be about 1800 m/min, although it need not be in other examples.
  • the method may include detecting a temperature profile of the metal substrate 110 across the width of the metal substrate 110.
  • the method may include comparing the detected temperature profile with a predetermined or desired temperature profile.
  • the predetermined desired temperature profile is a temperature profile that is less than or equal to the critical softening temperature of the metal substrate 110 and/or a desired coiling temperature of the metal substrate, although it need not be in other examples.
  • the method may include determining a cooling profile for the cooling header 114 based on a difference between the detected temperature profile and the predetermined or desired temperature profile.
  • the method may include controlling the cooling header 114 such that the cooling header 114 provides coolant pursuant to the cooling profile and such that the coolant cools the metal substrate 110 to have the predetermined or desired temperature profile at the predetermined line speed.
  • controlling the cooling header 114 may include controlling one or more of a spray pattern of coolant from one or more nozzles individually, a spray pattern of the coolant being dispensed across the width of the metal substrate 110, a flow rate of coolant from one or more nozzles, a duration at which the coolant is dispensed from one or more nozzles, how many of the one or more nozzles are turned on, or other suitable characteristics or controls as desired.
  • Illustration 1 A cooling system for a metal processing system, the cooling system comprising: a cooling header configured to selectively dispense a coolant onto a metal substrate; an exhaust system downstream from the cooling header, wherein the exhaust system comprises a removal device that is configured to remove coolant dispensed by the cooling header; a temperature sensor downstream from the cooling header, wherein the temperature sensor is configured to detect a temperature profile of the metal substrate across a width of the metal substrate; and a controller communicatively coupled to the cooling header and the temperature sensor, wherein the controller is configured to control the cooling header based at least on a detected temperature profile.
  • Illustration 2 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the cooling header and the removal device of the exhaust system are positioned relative to a passline of a metal substrate through the cooling system, and wherein the cooling header and the removal device of the exhaust system are on opposing sides of the passline.
  • Illustration 3 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the cooling header and the removal device of the exhaust system are positioned relative to a passline of a metal substrate through the cooling system, and wherein the cooling header and the removal device of the exhaust system are on a same side of the passline.
  • Illustration 4 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the cooling header and the removal device of the exhaust system are below the passline.
  • Illustration 5 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the removal device of the exhaust system is configured to generate a vacuum force.
  • Illustration 6 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the removal device of the exhaust system is a first removal device, and wherein the exhaust system further comprises a second removal device downstream from the cooling header.
  • Illustration 7 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the first removal device is a vacuum device, and wherein the second removal device is a blower.
  • Illustration 8 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the cooling header, the first removal device, and the second removal device are positioned relative to a passline of a metal substrate through the cooling system, wherein the cooling header and the first removal device are on a first side of the passline, and wherein the second removal device is on a second side of the passline opposite from the first side.
  • Illustration 9 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the cooling header and the first removal device are below the passline, and wherein the second removal device is above the passline.
  • Illustration 10 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the second removal device is vertically aligned with the first removal device.
  • Illustration 11 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the cooling header comprises a plurality of nozzles, and wherein each nozzle of the plurality of nozzles is independently controlled by the controller.
  • Illustration 12 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the temperature sensor is a first temperature sensor, and wherein the cooling system further comprises a second temperature sensor upstream from the cooling header.
  • Illustration 13 The cooling system of any preceding or subsequent illustrations or combination of illustrations, further comprising a flatness sensor configured to detect a flatness profile of the metal substrate across a width of the metal substrate, wherein the controller is communicatively coupled to the flatness sensor and is configured to control the cooling header based at least on a detected flatness profile.
  • Illustration 14 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the controller is further configured to: determine a desired exit temperature profile of metal substrate; receive the detected temperature profile from the temperature sensor; determine a cooling profile for the coolant at a predetermined line speed based on the desired exit temperature profile and the detected temperature profile; and control the cooling header such that the cooling header dispenses the coolant pursuant to the cooling profile.
  • Illustration 15 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the desired exit temperature profile is a coiling temperature of the metal substrate.
  • Illustration 17 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the desired exit temperature profile is predetermined.
  • Illustration 18 The cooling system of any preceding or subsequent illustrations or combination of illustrations, wherein the controller is configured to determine the desired exit temperature profile based at least partially on a material composition of the metal substrate.
  • Illustration 21 The metal processing system of any preceding or subsequent illustrations or combination of illustrations, wherein the cooling header is positioned proximate to the exit stand.
  • Illustration 22 The metal processing system of any preceding or subsequent illustrations or combination of illustrations, wherein the exhaust system is a predetermined distance downstream from the cooling header, and wherein the predetermined distance is based on a desired cooling rate of the metal substrate at a predetermined line speed of the metal substrate exiting the exit stand.
  • Illustration 23 The metal processing system of any preceding or subsequent illustrations or combination of illustrations, wherein the controller is further configured to: determine a desired exit temperature profile of metal substrate prior to coiling; receive the detected temperature profile from the temperature sensor; determine a cooling profile for the coolant at a predetermined line speed based on the desired exit temperature profile and the detected temperature profile; and control the cooling header such that the cooling header dispenses the coolant pursuant to the cooling profile.
  • Illustration 24 The metal processing system of any preceding or subsequent illustrations or combination of illustrations, wherein the predetermined line speed is about 1800 m/min.
  • Illustration 25 The metal processing system of any preceding or subsequent illustrations or combination of illustrations, wherein the rolling mill is a cold rolling mill.
  • Illustration 26 A method of cooling a metal substrate using the cooling system of any preceding or subsequent illustrations or combination of illustrations, the method comprising: receiving the detected temperature profile from the temperature sensor; determining a cooling profile for the coolant at a predetermined line speed based on a desired exit temperature profile of the metal substrate before coiling and the detected temperature profile; and controlling the cooling header such that the cooling header dispenses the coolant pursuant to the cooling profile.
  • Illustration 27 A cold rolling mill comprising: an exit stand; and a cooling system downstream from the exit stand, the cooling system comprising a cooling header configured to selectively dispense a coolant onto a metal substrate exiting the exit stand.
  • Illustration 28 The cold rolling mill of any preceding or subsequent illustrations or combination of illustrations, further comprising a rewind coiler, wherein the cooling system is between the exit stand and the rewind coiler.
  • Illustration 29 The cold rolling mill of any preceding or subsequent illustrations or combination of illustrations, further comprising an exhaust system downstream from the cooling header, wherein the exhaust system comprises a removal device that is configured to remove coolant dispensed by the cooling header.
  • Illustration 30 The cold rolling mill of any preceding or subsequent illustrations or combination of illustrations, further comprising: a temperature sensor downstream from the cooling header, wherein the temperature sensor is configured to detect a temperature profile of the metal substrate across a width of the metal substrate; and a controller communicatively coupled to the cooling header and the temperature sensor, wherein the controller is configured to control the cooling header based at least on a detected temperature profile.
  • a cold rolling mill comprising: an exit stand; and a cooling system downstream from the exit stand, the cooling system comprising: a cooling header comprising a plurality of nozzles, each nozzle of the plurality of nozzles configured to selectively dispense a coolant onto a metal substrate exiting the exit stand; and a controller communicatively coupled with the cooling header and configured to individually control each nozzle of the plurality of nozzles.
  • Illustration 32 The cold rolling mill of any preceding or subsequent illustrations or combination of illustrations, further comprising: a temperature sensor configured to detect a temperature profile across a width of the metal substrate, wherein the controller is communicatively coupled with the temperature sensor is configured to control each nozzle of the plurality of nozzles based on a detected temperature profile from the temperature sensor.
  • Illustration 33 A method of cooling a metal substrate with a cooling system, the method comprising: receiving a metal substrate at a first temperature, applying a coolant to a surface of the metal substrate by directing the coolant through at least one nozzle, the at least one nozzle configured to direct the coolant as micronized droplets; and controlling a droplet size of the coolant as it is directed through the at least one nozzle to modify a Leidenfrost point of the coolant.
  • Illustration 34 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the metal substrate comprises an aluminum alloy.
  • Illustration 35 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the first temperature is 590 °C.
  • Illustration 36 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the at least one nozzle is at least one cone-shaped nozzle.
  • Illustration 37 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the coolant comprises water.
  • Illustration 38 The method of any preceding or subsequent illustrations or combination of illustrations, wherein receiving the metal substrate at the first temperature comprises receiving the metal substrate from a piece of metal processing equipment.
  • Illustration 38 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the piece of metal processing equipment comprises a work stand of a rolling mill, and wherein the rolling mill comprises at least one of a hot rolling mill, a cold rolling mill, or a warm rolling mill.
  • Illustration 41 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the coolant is selected from the group consisting of water, oil, air, a charged solution and/or other suitable liquid coolant.
  • Illustration 41 The method water, oil, air, a charged solution and/or other suitable liquid coolant, wherein applying the coolant comprises applying the coolant such that the temperature of the metal substrate decreases at a rate of at least 100 °C/s, and optionally at least 500 °C/s.
  • Illustration 42 The method 100 °C/s, wherein the at least one nozzle comprises at least one movable nozzle.
  • Illustration 43 The method 100 °C/s, further comprising moving the at least one movable nozzle to a second surface of the metal substrate that is at the first temperature.
  • Illustration 44 A method of quenching a metal substrate with a quenching system, the method comprising: receiving a metal substrate at a first temperature; inducing a non-neutral electric charge on a surface of the metal substrate; and applying a coolant to the surface of the metal substrate by directing the coolant through at least one nozzle, wherein the coolant comprises a complementary electrical charge to the electrical charge induced on the surface of the metal substrate to modify a Leidenfrost point of the coolant.
  • Illustration 45 A method of quenching a metal substrate with a quenching system, the method comprising: receiving a metal substrate at a first temperature; modifying a surface of the metal substrate such that the surface geometry modifies a Leidenfrost point of a coolant; and applying the coolant to a surface of the metal substrate by directing the coolant through at least one nozzle towards the modified surface of the metal substrate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Control Of Temperature (AREA)
  • Control Of Heat Treatment Processes (AREA)

Claims (14)

  1. Système de refroidissement (104) pour un système de traitement des métaux (100), le système de refroidissement comprenant :
    un collecteur de refroidissement (114) configuré pour distribuer de manière sélective un liquide de refroidissement (116) sur un substrat métallique (110);
    un système d'échappement (118) en aval du collecteur de refroidissement (114), dans lequel le système d'échappement (118) comprend un dispositif d'évacuation (120) configuré pour évacuer le liquide de refroidissement (116) distribué par le collecteur de refroidissement (114);
    un capteur de température (128) en aval du collecteur de refroidissement (114), dans lequel le capteur de température (128) est configuré pour détecter un profil de température du substrat métallique (110) d'un côté à l'autre de la largeur du substrat métallique (110); et
    un contrôleur (130) couplé de manière communicative au collecteur de refroidissement (114) et au capteur de température (128), dans lequel le contrôleur (130) est configuré pour commander le collecteur de refroidissement (114) sur la base d'au moins un profil de température détecté, dans lequel le contrôleur (130) est en outre configuré pour :
    déterminer un profil de température de sortie souhaité du substrat métallique (110);
    recevoir le profil de température détecté provenant du capteur de température (128);
    déterminer un profil de refroidissement pour le liquide de refroidissement (116) à une vitesse de ligne prédéterminée sur la base du profil de température de sortie souhaité et du profil de température détecté; et
    commander le collecteur de refroidissement (114) de telle sorte que le collecteur de refroidissement distribue le liquide de refroidissement conformément au profil de refroidissement.
  2. Le système de refroidissement (104) selon la revendication 1, dans lequel le collecteur de refroidissement (114) est un collecteur de pulvérisation atomisée.
  3. Le système de refroidissement (104) selon la revendication 1, dans lequel le collecteur de refroidissement (114) et le dispositif d'évacuation (120) du système d'échappement (118) sont positionnés par rapport à une ligne de passage d'un substrat métallique (110) à travers le système de refroidissement, et dans lequel le collecteur de refroidissement (114) et le dispositif d'évacuation (120) du système d'échappement (118) se trouvent du même côté de la ligne de passage,
    dans lequel, en option, le collecteur de refroidissement (114) et le dispositif d'évacuation (120) du système d'échappement (118) se trouvent en dessous de la ligne de passage.
  4. Le système de refroidissement (104) selon la revendication 1, dans lequel le dispositif d'évacuation (120) du système d'échappement (118) est un premier dispositif d'évacuation, et dans lequel le système d'échappement (118) comprend en outre un deuxième dispositif d'évacuation en aval du collecteur de refroidissement (114),
    dans lequel, en option, le premier dispositif d'évacuation est un dispositif à vide et le deuxième dispositif d'évacuation est un ventilateur, et/ou
    dans lequel, en option, le collecteur de refroidissement (114), le premier dispositif d'évacuation et le deuxième dispositif d'évacuation sont positionnés par rapport à une ligne de passage d'un substrat métallique (110) à travers le système de refroidissement (104), dans lequel le collecteur de refroidissement (114) et le premier dispositif d'évacuation se trouvent sur un premier côté de la ligne de passage, et dans lequel le deuxième dispositif d'évacuation se trouve sur un deuxième côté de la ligne de passage opposé au premier côté, et dans lequel, en option, le collecteur de refroidissement et le premier dispositif d'évacuation sont situés en dessous de la ligne de passage et le deuxième dispositif d'évacuation est situé au-dessus de la ligne de passage.
  5. Système de refroidissement (104) selon la revendication 1, dans lequel le collecteur de refroidissement (114) comprend une pluralité de buses (336), et dans lequel chaque buse de la pluralité de buses (336) est commandée indépendamment par le contrôleur (130).
  6. Système de refroidissement (104) selon la revendication 1, dans lequel le capteur de température (128) est un premier capteur de température, et dans lequel le système de refroidissement comprend en outre un deuxième capteur de température en amont du collecteur de refroidissement (114).
  7. Système de refroidissement (104) selon la revendication 1, dans lequel commander le collecteur de refroidissement (114) comprend commander au moins un parmi un motif de pulvérisation sur la largeur du substrat métallique (110) ou un débit du liquide de refroidissement provenant du collecteur de refroidissement.
  8. Système de refroidissement (104) selon la revendication 1, dans lequel le collecteur de refroidissement (114) et le dispositif d'évacuation (120) du système d'échappement (118) sont positionnés par rapport à une ligne de passage d'un substrat métallique (110) à travers le système de refroidissement (104), et dans lequel le collecteur de refroidissement (114) et le dispositif d'évacuation (120) du système d'échappement (118) se trouvent sur les côtés opposés de la ligne de passage.
  9. Système de traitement des métaux (100) comprenant :
    un poste de sortie (102) d'un laminoir (103), dans lequel le laminoir est un laminoir à froid ; et
    le système de refroidissement (104) de la revendication 1, dans lequel le système de refroidissement est en aval du poste de sortie (102),
    dans lequel le contrôleur (130) en option est en outre configuré de manière pour:
    déterminer un profil de température de sortie souhaité du substrat métallique avant enroulement ;
    recevoir le profil de température détecté provenant du capteur de température (128) ;
    déterminer un profil de refroidissement pour le liquide de refroidissement à une vitesse de ligne prédéterminée sur la base du profil de température de sortie souhaité et du profil de température détecté; et
    commander le collecteur de refroidissement (114) de telle sorte que le collecteur de refroidissement distribue le liquide de refroidissement (116) conformément au profil de refroidissement.
  10. Laminoir à froid (103) comprenant :
    un poste de sortie (102); et
    le système de refroidissement (104) selon la revendication 1 en aval du poste de sortie, dans lequel le collecteur de refroidissement (114) du système de refroidissement est configuré pour distribuer de manière sélective le liquide de refroidissement sur le substrat métallique sortant du poste de sortie.
  11. Laminoir à froid (103) selon la revendication 10, comprenant en outre :
    un enrouleur de rembobinage, dans lequel le système de refroidissement (104) est situé entre le poste de sortie (102) et l'enrouleur de rembobinage; et
    un système d'échappement (118) en aval du collecteur de refroidissement (114), dans lequel le système d'échappement (118) comprend un dispositif d'évacuation (120) qui est configuré pour évacuer le liquide de refroidissement distribué par le collecteur de refroidissement (114).
  12. Laminoir à froid (103) selon la revendication 10, comprenant en outre :
    un capteur de température en aval du collecteur de refroidissement (114), dans lequel le capteur de température est configuré pour détecter un profil de température du substrat métallique (110) d'un côté à l'autre de la largeur du substrat métallique (110); et
    un contrôleur (130) couplé de manière communicative au collecteur de refroidissement (114) et au capteur de température (128), dans lequel le contrôleur (130) est configuré pour commander le collecteur de refroidissement (114) sur la base d'au moins un profil de température détecté.
  13. Laminoir à froid (103), comprenant:
    un poste de sortie (102); et
    le système de refroidissement (104) de la revendication 1 en aval du banc de sortie (102), dans lequel le collecteur de refroidissement (114) du système de refroidissement (104) comprend une pluralité de buses (336), chaque buse de la pluralité de buses (336) étant configurée pour distribuer de manière sélective le liquide de refroidissement sur le substrat métallique (110) sortant du banc de sortie (102), et dans lequel le contrôleur (130) du système de refroidissement (104) est configuré pour contrôler individuellement chaque buse de la pluralité de buses (336).
  14. Le laminoir à froid (103) selon la revendication 13, comprenant en outre :
    un capteur de température (128) configuré pour détecter un profil de température d'un côté à l'autre de la largeur du substrat métallique (110),
    dans lequel le contrôleur (130) est couplé de manière communicative avec le capteur de température et est configuré pour commander chaque buse de la pluralité de buses sur la base d'un profil de température détecté par le capteur de température.
EP22812899.7A 2021-10-27 2022-10-21 Système de refroidissement rapide de substrat Active EP4422811B1 (fr)

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JPS63241112A (ja) * 1987-03-27 1988-10-06 Kawasaki Steel Corp 局部冷却装置
DE3909016A1 (de) * 1989-03-18 1990-09-20 Wieland Werke Ag Verfahren zum entfernen von fluessigkeitsresten von metall-baendern mittels ultraschall
JPH05228525A (ja) * 1992-02-19 1993-09-07 Sumitomo Metal Ind Ltd 熱間圧延鋼帯の幅方向温度制御方法および装置
WO2012043210A1 (fr) * 2010-09-28 2012-04-05 住友金属工業株式会社 Appareil de production de tôle d'acier laminée à chaud
ES3002688T3 (en) * 2018-06-13 2025-03-07 Novelis Inc Systems and methods for quenching a metal strip after rolling
CN112703067B (zh) * 2018-09-19 2022-09-16 日本制铁株式会社 热轧钢板的冷却装置及热轧钢板的冷却方法

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JP2024540713A (ja) 2024-11-01
CN118139702A (zh) 2024-06-04
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DE212022000315U1 (de) 2024-07-19

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