EP2103695A1 - Dispositif destiné au refroidissement d'une pièce usinée - Google Patents

Dispositif destiné au refroidissement d'une pièce usinée Download PDF

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Publication number
EP2103695A1
EP2103695A1 EP09001433A EP09001433A EP2103695A1 EP 2103695 A1 EP2103695 A1 EP 2103695A1 EP 09001433 A EP09001433 A EP 09001433A EP 09001433 A EP09001433 A EP 09001433A EP 2103695 A1 EP2103695 A1 EP 2103695A1
Authority
EP
European Patent Office
Prior art keywords
cooling chamber
workpiece
cooling
flaps
tubes
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.)
Withdrawn
Application number
EP09001433A
Other languages
German (de)
English (en)
Inventor
Dieter Uschkoreit
Andreas Breloer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2103695A1 publication Critical patent/EP2103695A1/fr
Withdrawn legal-status Critical Current

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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
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
    • 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
    • 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
    • C21D1/84—Controlled slow 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Definitions

  • the invention relates to a device for cooling a heated in a continuous furnace or the like furnace workpiece, a board, a rod or profile piece of metal, especially steel, consisting of a cooling chamber with a workpiece inlet, a workpiece outlet, and a cooling section between inlet and outlet, which has arranged on the upper side in the cooling chamber, flowed through by coolant tubes.
  • the present invention seeks to provide a device of the generic type, with a slow targeted cooling of workpieces in a selected temperature range is possible.
  • the invention proposes that temperature detection devices are provided distributed over the length of the cooling chamber, by means of which the workpiece temperature is detected directly or indirectly at different positions in the cooling chamber, that are arranged between the workpiece and the flow of coolant through the valves, which are adjustable in a first position in which they form a barrier between the workpiece and the tubes, and in a second position, in which the space between the workpiece and tubes is at least partially open, wherein the butterfly valves are adjustable by means of actuators, which are actuated in dependence on the measured workpiece temperature.
  • the workpieces are transported through the cooling chamber, for example, via a roller conveyor, a chain conveyor or else via travel and / or lifting beams at a preferably constant speed.
  • a roller conveyor for example, via a roller conveyor, a chain conveyor or else via travel and / or lifting beams at a preferably constant speed.
  • the butterfly valves arranged distributed over the path of the workpiece can be opened or closed, so that a specific temperature profile can be adjusted and thus a slow cooling during the passage through the cooling chamber with a corresponding temperature gradient can be achieved.
  • the control of the butterfly valves so the movement from the first to the second position and back to the first position takes place in dependence on the measured workpiece temperature.
  • a corresponding adjustment for the setting of the valves can also be pre-programmed so that the valves open or close according to this predetermined motion profile.
  • the input temperature is 1050 ° C.
  • a temperature of approximately 700 ° C. to 800 ° C. is achieved at the output by the device according to the invention. With this temperature, the workpieces leave the cooling chamber and can continue to cool outside in the subcritical region in the air.
  • a protective gas atmosphere may exist in the cooling chamber.
  • the walls of the cooling chamber are thermally insulated.
  • the walls of the cooling chamber are cooled.
  • the pipes through which coolant flows are arranged on the inside of the upper chamber wall of the cooling chamber.
  • the height of the cooling chamber is dimensioned so that the butterfly valves are adjustable from the normally horizontal first position to the vertical second position without touching the pipes through which the coolant flows.
  • adjusting flaps forming a pair of control flaps are arranged opposite one another on the side walls of the cooling chamber, which in the closed position separate the space of the cooling chamber in which the workpiece is arranged from the tube-provided upper space of the cooling chamber, wherein the adjusting flaps are pivotable about axes parallel to the transport direction of the workpiece.
  • the width of the butterfly valves seen in the longitudinal direction of the cooling chamber is about 0.80 cm to 1.20 m.
  • each valve flap pair is associated with a temperature sensing device.
  • valves have a heat insulating layer or consist of heat-insulating material.
  • the cooling chamber has a length of about 4.5 m.
  • FIG. 1 is a schematic one Heat treatment plant shown, which consists of a continuous furnace 1 and an adjoining cooling chamber 2. A corresponding workpiece is transported in the direction of the movement arrow 3 through this system by means of suitable funding.
  • this system has a device for cooling a heated in the continuous furnace 1 workpiece made of steel.
  • This consists of a cooling chamber 2 in the form of a closed chamber rectangular cross-section. In the direction of movement of the workpiece 3 in front, this cooling chamber has an entrance lock and on the output side an exit lock.
  • pipes 4 through which coolant flows are arranged in the cooling chamber on the top side.
  • temperature sensing devices are provided, by means of which in different positions, the workpiece temperature is directly or indirectly detected.
  • the flowed through by coolant tubes 4 can contribute to the rapid cooling of the workpiece.
  • the adjusting plates 6 are adjustable by means not shown in the drawing actuators, said actuators are actuated in response to the measured workpiece temperature to achieve a desired temperature gradient over the length of the cooling chamber 2.
  • the walls 8 of the cooling chamber are thermally insulated or lined with heat-insulating material, wherein the walls 8 may also be cooled in a suitable manner.
  • the coolant flowed through the tubes 4 are arranged and fastened in a suitable manner near the upper chamber wall.
  • FIG. 2 how out FIG. 2 can be seen, in each case two adjusting flaps forming a pair of control valves 6 are arranged opposite one another pivotally on the side walls of the cooling chamber 2, which in the closed position, the space of the cooling chamber 2, in which the workpiece is arranged, provided by the flowing through the coolant pipes 8 upper space separate the cooling chamber 2. In the alternative situation, this room is open.
  • the valves 6 are pivotable about the transport direction 3 of the workpiece parallel axes. Over the length of the cooling chamber 2, a plurality of such valves 6 are arranged one behind the other in pairs, the width of the valves 6 seen in the longitudinal direction of the cooling chamber 2, about 90 cm, when the cooling chamber 2 has a length of 4.50 m. It can be arranged one behind the other five such pairs of butterfly valves.
  • Each butterfly valve pair 6 is associated with a temperature sensing device and a correspondingly controllable by this actuator so that all flaps are adjustable in pairs according to the desired temperature profile.
  • the butterfly valves 6 preferably have a heat insulation layer or consist of heat-insulating material.
  • the inventive construction and arrangement it is possible, for example from the heating furnace 1 to 1050 ° C heated workpiece slowly while maintaining a desired temperature gradient over the length of the cooling chamber 2 to cool so that the workpiece at the exit of the cooling chamber about 700 ° C to 800 ° C. After leaving the cooling chamber 2, the workpiece can then continue to cool in the air.
  • the inventive slow and targeted cooling a deformation of the workpiece, in particular bending of rods or the like is prevented by the cooling process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP09001433A 2008-02-11 2009-02-03 Dispositif destiné au refroidissement d'une pièce usinée Withdrawn EP2103695A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810008648 DE102008008648B3 (de) 2008-02-11 2008-02-11 Vorrichtung zur Abkühlung eines Werkstückes

Publications (1)

Publication Number Publication Date
EP2103695A1 true EP2103695A1 (fr) 2009-09-23

Family

ID=40688332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09001433A Withdrawn EP2103695A1 (fr) 2008-02-11 2009-02-03 Dispositif destiné au refroidissement d'une pièce usinée

Country Status (2)

Country Link
EP (1) EP2103695A1 (fr)
DE (1) DE102008008648B3 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61170520A (ja) * 1985-01-25 1986-08-01 Kobe Steel Ltd 徐冷設備
EP0315590A2 (fr) * 1987-11-03 1989-05-10 Alusuisse-Lonza Services Ag Chambre de refroidissement par convection de matériaux présentant des surfaces
DE3838458A1 (de) * 1987-12-03 1989-06-15 Feinstahlbau Bautzen Veb Einrichtung zur verhinderung von waermeverlusten und fuer den transport in tunneldurchlaufoefen
JP2001140014A (ja) * 1999-09-02 2001-05-22 Daido Steel Co Ltd 熱処理炉
DE102004060207A1 (de) * 2004-12-14 2006-06-22 Polysius Ag Verfahren und Kühler zum Kühlen von stückigem Gut
US20090031950A1 (en) * 2007-07-31 2009-02-05 Isg Technologies Inc. Furnace Configured for Use in Both the Galvannealing and Galvanizing of a Metal Strip

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980072267A (ko) * 1997-03-03 1998-11-05 토니헬샴 비조질강의 가열.냉각방법 및 그 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61170520A (ja) * 1985-01-25 1986-08-01 Kobe Steel Ltd 徐冷設備
EP0315590A2 (fr) * 1987-11-03 1989-05-10 Alusuisse-Lonza Services Ag Chambre de refroidissement par convection de matériaux présentant des surfaces
DE3838458A1 (de) * 1987-12-03 1989-06-15 Feinstahlbau Bautzen Veb Einrichtung zur verhinderung von waermeverlusten und fuer den transport in tunneldurchlaufoefen
JP2001140014A (ja) * 1999-09-02 2001-05-22 Daido Steel Co Ltd 熱処理炉
DE102004060207A1 (de) * 2004-12-14 2006-06-22 Polysius Ag Verfahren und Kühler zum Kühlen von stückigem Gut
US20090031950A1 (en) * 2007-07-31 2009-02-05 Isg Technologies Inc. Furnace Configured for Use in Both the Galvannealing and Galvanizing of a Metal Strip

Also Published As

Publication number Publication date
DE102008008648B3 (de) 2009-07-16

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