EP0794022A2 - Procédé, dispositif et agent pour le refroidissement de profilés - Google Patents

Procédé, dispositif et agent pour le refroidissement de profilés Download PDF

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Publication number
EP0794022A2
EP0794022A2 EP97102738A EP97102738A EP0794022A2 EP 0794022 A2 EP0794022 A2 EP 0794022A2 EP 97102738 A EP97102738 A EP 97102738A EP 97102738 A EP97102738 A EP 97102738A EP 0794022 A2 EP0794022 A2 EP 0794022A2
Authority
EP
European Patent Office
Prior art keywords
profile
cooling
aerosol
air
liquid
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.)
Granted
Application number
EP97102738A
Other languages
German (de)
English (en)
Other versions
EP0794022B1 (fr
EP0794022A3 (fr
Inventor
Dieter Waase
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0794022A2 publication Critical patent/EP0794022A2/fr
Publication of EP0794022A3 publication Critical patent/EP0794022A3/fr
Application granted granted Critical
Publication of EP0794022B1 publication Critical patent/EP0794022B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0425—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid without any source of compressed gas, e.g. the air being sucked by the pressurised liquid
    • 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
    • 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

Definitions

  • the invention relates to a method and an apparatus and a cooling medium for cooling warm-rolled profiles by means of a cooling medium.
  • Slow cooling of rolling stock from the rolling heat is known, for example on a cooling bed with still air.
  • moving air in the form of a high-energy flow from fans is used.
  • a gradient of the temperature decrease in the rolling stock to be cooled that is up to a factor of 3 compared to cooling in still air results in some cases.
  • the invention is based on the object of specifying a method, a device suitable for carrying it out, and a cooling medium by which the aforementioned difficulties and disadvantages are at least largely overcome and the economic data of a cooling device are substantially improved.
  • the object is achieved in a method for cooling warm-rolled profiles with the invention in that air is used as the cooling medium, to which a liquid wetting the profile is added and homogeneously dispersed therein as an aerosol.
  • a device for performing the method is characterized in that it has at least one organ for generating an energy-rich aerosol flow, which preferably connects to a compressed air source has pressure-adjustable acceleration nozzle and a connection to a liquid supply device.
  • the organ is preferably designed with a connection for intake air as a self-priming injector for liquid and air and has means for proportionally setting a predetermined ratio of air and liquid dispersible therein. Further configurations of the devices are provided according to the subclaims.
  • a cooling medium for a hot-rolled roll profile which predominantly contains air, is characterized according to the invention in that the air contains portions of liquid in homogeneous dispersion with the formation of a cooling aerosol.
  • Figure 1 shows an organ (10) for generating an energy-rich aerosol flow (26). It has an acceleration nozzle (12) which can be connected to a compressed air source (11) and at least one connection (13) for sucking in liquid from a liquid supply device (14). Upstream of the acceleration nozzle (12) there is a throttle valve (2) for setting the amount of compressed air fed in. Furthermore, there is a connection (15) for intake air on the organ (10). Both in the connection (15) and in the liquid supply device (14) there are means (16, 17), for example in the form of pivotable throttle disks, for proportionally setting a predetermined air / liquid ratio.
  • the organ (10) with the acceleration nozzle (12) and the housing (3) is designed as a self-priming injector for liquid and air.
  • the housing (3) is narrowed in the cross-sectional area of connection (13) in the manner of a Venturi tube and then continuously expanded to the free end. This results in a vacuum zone in the area of the narrowest cross-section and upstream of it, which enables the organ (10) to automatically suck in liquid and air and to homogeneously disperse the two media into an intensive aerosol flow (26).
  • FIG. 2 An exemplary arrangement is shown in FIG. 2, in which a plurality of aerosol-generating organs (10), one behind the other in the direction of movement (4) of the profile (1) the profile (1) vertically intersecting plane are each arranged on a common holder (18), concentrically directed against the profile (1), with the formation of a cooling system.
  • an arrangement can be provided in which a plurality of cooling systems provided in the transport direction (4) of the profile (1) are arranged in series to form a cooling section (19).
  • the aerosol streams (26) formed by the aerosol-producing organs (10) envelop the profile (1) with dense aerosol clouds from directed high-energy flows which are blown against the profile (1) and in this way for rapid cooling to care.
  • FIG. 4 shows comparative curves of the cooling times of the same type of rolling profile as a function of different cooling media.
  • the top curve I represents the cooling process of a rolling profile from initially 900 ° C to 90 ° C within 70 minutes in still, dry air.
  • the middle curve II shows the cooling behavior of a rolling profile with accelerated air flow from an initial 900 ° C to 90 ° C within 26 minutes.
  • the lower curve III using an accelerated aerosol flow, a rolling profile is rapidly cooled from 900 ° C. to 90 ° C. in 7.5 minutes. It has thus been proven that cooling with a water / air aerosol as the cooling medium brings about a significant improvement in the cooling behavior in the case of goods that are hot from the roll.
  • devices for producing aerosol of the water / air type can be used different ways known to those skilled in the art are generated.
  • liquid and air can be forcibly conveyed, metered volumetrically and atomized.
  • the arrangement or design of cooling systems or cooling sections is also left to the experience of the specialist, depending on the operational situation.
  • the invention is uncomplicated and effective and, in addition to the economical use of the carrier medium air, enables a reduction in the system parts required for cooling hot-rolled profiles and in their energy requirements. In this respect, the invention optimally fulfills the task set out above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Nozzles (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
EP97102738A 1996-03-08 1997-02-20 Procédé, dispositif et agent pour le refroidissement de profilés Expired - Lifetime EP0794022B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19608965 1996-03-08
DE19608965A DE19608965A1 (de) 1996-03-08 1996-03-08 Verfahren und Vorrichtung sowie Kühlmedium zum Kühlen von walzwarmen Profilen

Publications (3)

Publication Number Publication Date
EP0794022A2 true EP0794022A2 (fr) 1997-09-10
EP0794022A3 EP0794022A3 (fr) 1998-02-04
EP0794022B1 EP0794022B1 (fr) 2001-10-17

Family

ID=7787593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102738A Expired - Lifetime EP0794022B1 (fr) 1996-03-08 1997-02-20 Procédé, dispositif et agent pour le refroidissement de profilés

Country Status (5)

Country Link
US (1) US5775122A (fr)
EP (1) EP0794022B1 (fr)
JP (1) JPH105844A (fr)
AT (1) ATE206964T1 (fr)
DE (2) DE19608965A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0925855A3 (fr) * 1997-12-23 2000-08-02 SMS Demag AG Dispositif pour le refroidissement contrôlé de profilés laminés à chaud, en particulier de poutres, directement à partir de la température de laminage
CN105268569A (zh) * 2015-11-11 2016-01-27 西安交通大学 一种气液两相环状流射流与主流气体的掺混装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE514171C2 (sv) * 1998-02-03 2001-01-15 Ericsson Telefon Ab L M Anordning och förfarande för luftkylning av en elektrisk anordning
FR2800643B1 (fr) * 1999-11-05 2002-08-30 Rhodia Chimie Sa Dispositif de pulverisation et son application a un tunnel de traitement bactericide
US6328226B1 (en) 1999-12-22 2001-12-11 Visteon Global Technologies, Inc. Nozzle assembly
DE10124166B8 (de) * 2001-05-15 2006-12-14 Schott Ag Verfahren zum Kühlen von Anlagenkomponenten, die von fließfähigen Medien beaufschlagt werden
DE112008002167B4 (de) * 2007-04-26 2014-02-06 Panasonic Corporation Kühlschrank und elektrische Vorrichtung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB623674A (en) * 1947-05-09 1949-05-20 Electric Furnace Co Improvements relating to heat treatment including quenching
GB1323757A (en) * 1969-12-01 1973-07-18 Nippon Kokan Kk Method and apparatus for cooling hot metals
GB1336490A (en) * 1970-12-28 1973-11-07 Nippon Kokan Kk Method and apparatus for quenching metal stocks
US3997376A (en) * 1974-06-19 1976-12-14 Midland-Ross Corporation Spray mist cooling method
BE837884A (fr) * 1976-01-23 1976-05-14 Centre Rech Metallurgique Perfectionnements aux dispositifs de refroidissement des profiles metalliques
DE2751013C3 (de) * 1977-11-15 1981-07-09 Kleinewefers Gmbh, 4150 Krefeld Kühleinrichtung
US4273744A (en) * 1978-11-27 1981-06-16 Borg-Warner Corporation Device for automatic addition of a corrosion inhibitor to a coolant system
FR2444514A1 (fr) * 1978-12-22 1980-07-18 Heurtey Metallurgie Procede et dispositif de refroidissement pour le traitement des metaux
FR2455255A1 (fr) * 1979-04-23 1980-11-21 Centre Rech Metallurgique Perfectionnements aux dispositifs de refroidissement de ronds metalliques ou analogues
BE896219A (fr) * 1983-03-18 1983-09-19 Centre Rech Metallurgique Perfectionnement au procede de refroidissement des profiles
FR2675718A1 (fr) * 1991-04-29 1992-10-30 Bertin & Cie Procede et dispositif de refroidissement d'un profile en cours de laminage.
DE4430856C2 (de) * 1994-08-31 1996-11-07 Kloeckner Stahl Gmbh Verfahren zur Reduzierung und Steuerung der Oberflächenverzunderung beim Warmwalzen von Flachprodukten, insbesondere Warmbändern

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0925855A3 (fr) * 1997-12-23 2000-08-02 SMS Demag AG Dispositif pour le refroidissement contrôlé de profilés laminés à chaud, en particulier de poutres, directement à partir de la température de laminage
CN105268569A (zh) * 2015-11-11 2016-01-27 西安交通大学 一种气液两相环状流射流与主流气体的掺混装置
CN105268569B (zh) * 2015-11-11 2017-06-27 西安交通大学 一种气液两相环状流射流与主流气体的掺混装置

Also Published As

Publication number Publication date
US5775122A (en) 1998-07-07
DE59704914D1 (de) 2001-11-22
EP0794022B1 (fr) 2001-10-17
EP0794022A3 (fr) 1998-02-04
ATE206964T1 (de) 2001-11-15
JPH105844A (ja) 1998-01-13
DE19608965A1 (de) 1997-09-11

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