EP0962538A2 - Procédé et dispositf pour le refroidissement efficace de produits - Google Patents

Procédé et dispositf pour le refroidissement efficace de produits Download PDF

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Publication number
EP0962538A2
EP0962538A2 EP99110596A EP99110596A EP0962538A2 EP 0962538 A2 EP0962538 A2 EP 0962538A2 EP 99110596 A EP99110596 A EP 99110596A EP 99110596 A EP99110596 A EP 99110596A EP 0962538 A2 EP0962538 A2 EP 0962538A2
Authority
EP
European Patent Office
Prior art keywords
cooling
gas
chamber
cooling chamber
heat treatment
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Withdrawn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
EP99110596A
Other languages
German (de)
English (en)
Other versions
EP0962538A3 (fr
Inventor
Ernst Dr. Dipl.-Ing. Wandke
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of EP0962538A2 publication Critical patent/EP0962538A2/fr
Publication of EP0962538A3 publication Critical patent/EP0962538A3/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Withdrawn legal-status Critical Current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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
    • 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • 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
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material
    • 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

Definitions

  • the invention relates to a method for effectively cooling material to be treated after heat treatment or exposure to heat in an oven using cooling gas in an independent cooling chamber.
  • a curing process is known from EP-PS 313 888 for the material to be treated in a vacuum oven after the heat phase using a cooling gas stream is quenched to a pressure of more than 10 bar, using helium as the cooling gas, Hydrogen, a helium-hydrogen mixture or a helium-hydrogen mixture can be used with up to 30% inert gas.
  • the disadvantage is that the entire furnace must also be designed as a pressure and cooling apparatus.
  • the present invention is therefore based on the task of rapid cooling treatment items according to the two-chamber principle (furnace chamber, cooling chamber) to design, the disadvantages mentioned with reasonable effort as possible largely avoided.
  • the invention has the advantage that the Treatment material is not to be moved in any way at first and thus disadvantages movement such as unwanted solder dislocations, loss of temperature control, omitted.
  • this first cooling step is only the extent covers a relatively small temperature range, namely only up to a first critical temperature threshold - solder solidification, structural stabilization, e.g. Freeze the austenite state - using comparatively simple means such as gas supply lines and gas injection devices can be implemented. It also has an effect in the upper temperature range also the fact that all surrounding furnace parts are on the same Temperature levels are still relatively little on the cooling rate.
  • cooling is carried out with a flowing pressure gas up to 80 bar, but is preferred in the range between 5 and 50 bar and with Flow speeds above 5 m / sec worked.
  • cooling gas can before all nitrogen, argon, helium, hydrogen or mixtures thereof can be used can.
  • nitrogen and / or argon Application for higher cooling speed requirements are preferably helium or mixtures with substantial proportions of helium (> 25%) with nitrogen or argon.
  • the, with safety requirements associated with a hydrogen application avoided.
  • the high-pressure gas cooling according to the invention is with everyone, with regard to Compressive strength correspondingly designed cooling chamber possible, about one those corresponding to DE-PS 195 01 873.
  • the gas feed line is also provided for the first cooling step (7) already on the cooling device, in particular arranged on the connecting flange (3), in such a way that when extended Workpiece transport the material to be treated in the outflow area of the Gas supply line to the flowing gas is arranged.
  • an advantageous variant of the cooling device according to the invention is characterized in that, in addition to the connection to a heat treatment furnace serving opening an additional opening for docking independent Has treatment goods added. Treatments can be made in this design variant So be added without the cooling device from the respective heat treatment furnace must be separated.
  • FIG. 1 shows an oven / cooling chamber combination according to the invention.
  • FIG. 1 shows an oven / cooling chamber combination according to the invention.
  • a vacuum furnace 1 is shown in the left half of the figure, while in the right half of the picture a cooling device A according to the invention with cooling chamber 6, workpiece transport 5, separating slide 4 and connecting flange 3 is shown.
  • a gas supply line 7 with a front-side nozzle assembly 8 is arranged on the end face on the front part 3b of the connecting flange 3 and oriented perpendicularly thereto, the gas flowing out there acting on the end region of the workpiece transport 5 which is in the extended state.
  • the connecting flange 3 which forms a tunnel-like access to the cooling chamber 6 and is firmly connected to it, is penetrated at its foot end by the slide 4.
  • the latter can close the cooling chamber 6 in a gas-tight and pressure-tight manner with respect to the vacuum furnace 1 when the workpiece transport 5 is retracted.
  • a cooling gas supply of the chamber consisting of a gas supply line 10 and a gas intermediate store 11 is arranged on the cooling chamber 6.
  • a circulation fan 12 is also placed centrally in the ceiling area of the cooling chamber 6.
  • a process sequence according to the invention is as follows: In a separate position from the vacuum furnace 1 and cooling device A is on the extended workpiece transport 5 applied a workpiece 2, for example a soldered one to be soldered Slat package.
  • the cooling device is brought up to the vacuum furnace 1 below and by means of connecting flange 3 and clamping elements, not shown coupled vacuum-tight.
  • the evacuation process follows using the one in the vacuum oven existing facilities, both in the furnace interior and in the Cooling chamber 6, the desired vacuum is established.
  • the workpiece begins to heat up - in the present example to the Soldering temperature of around 900 ° C.
  • the cooling process according to the invention initiate.
  • the workpiece transport 5 After reaching the solidus time, the workpiece transport 5, for example a wire mesh track running over driven rollers and in guide rails, put into operation, and the workpiece 2 without sensitive control of the transport movement transported quickly into the cooling chamber 6.
  • the transport process according to the invention only takes a few seconds, during which the flooding already takes place the cooling chamber 6 is introduced from the gas buffer store 11, the cooling chamber fan 12 starts and the separating slide 4 begins to lower. Short after reaching the workpiece end position in the cooling chamber 6 is also pressure-tight closure of the chamber made by the slide 4, and it is done then already the pressure build-up in the cooling chamber from the gas intermediate store 11 via appropriate gas control elements.
  • the gas buffer store 11 can be used be biased up to 100 bar, with 10 one designed appropriately with regard to the desired preload and final pressure Gas supply must be connected in advance (e.g. gas bottle bundle with the corresponding Gas control technology). Because of the gas buffer store 11, a faster one Pressure buildup in the cooling chamber 6 achieved and the main cooling phase within a few Seconds. With a pressure of approx. 40 bar, again nitrogen Cooling gas and a fan power, the gas speeds of approx. 10 m / sec guaranteed, the relatively voluminous plate pack to be treated is inside cooled for a period of the order of one minute.
  • Cooling gases - helium and hydrogen - can do almost all desired cooling processes for soldering as well as for various heat treatments, especially those for demanding hardenings.
  • Cooling device this is also possible in a particularly advantageous manner, as there are usually no or only minor modifications to existing heat treatment furnaces must be carried out and in particular the one required in the process Workpiece transport already through the appropriate design of the cooling device is possible.

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)
  • Furnace Details (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP99110596A 1998-06-02 1999-06-01 Procédé et dispositf pour le refroidissement efficace de produits Withdrawn EP0962538A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19824574 1998-06-02
DE1998124574 DE19824574A1 (de) 1998-06-02 1998-06-02 Verfahren und Vorrichtung zur effektiven Abkühlung von Behandlungsgut

Publications (2)

Publication Number Publication Date
EP0962538A2 true EP0962538A2 (fr) 1999-12-08
EP0962538A3 EP0962538A3 (fr) 2003-09-24

Family

ID=7869637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99110596A Withdrawn EP0962538A3 (fr) 1998-06-02 1999-06-01 Procédé et dispositf pour le refroidissement efficace de produits

Country Status (2)

Country Link
EP (1) EP0962538A3 (fr)
DE (1) DE19824574A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1233078A2 (fr) * 2001-02-20 2002-08-21 Linde Aktiengesellschaft Procédé de trempe de pièces métalliques
EP1228828A3 (fr) * 2001-02-02 2005-07-13 The Boc Group, Inc. Refroidissement accéléré de produits frittés métalliques
WO2007054398A1 (fr) * 2005-11-08 2007-05-18 Robert Bosch Gmbh Installation de conversion a sec du reseau du materiau d'un produit semi-fini

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20208536U1 (de) 2002-05-29 2002-09-05 Schmetz GmbH, 58708 Menden Wärmebehandlungsanlage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2138363B1 (de) * 1971-07-31 1973-01-18 Ludwig-Ofag-Indugas Industrieofenanlagen Gmbh, 4300 Essen Anlage zum abkuehlen von singulaerem waermegut unter schutzgas
SU601317A1 (ru) * 1976-07-08 1978-04-05 Elbert Anatolij Ya Толкательна электропечь
DE3233361A1 (de) * 1982-09-08 1984-03-15 Vsesojuznyj naučno-issledovatel'skij, proektno-konstruktorskij i technologičeskij institut elektrotermiČeskogo oborudovanija, Moskva Kontinuierlicher elektroofen zur chemisch-thermischen behandlung von stahlteilen
EP0313888A1 (fr) * 1987-10-28 1989-05-03 Leybold Durferrit GmbH Méthode pour le traitement thermique de pièces métalliques
EP0727498A1 (fr) * 1995-01-23 1996-08-21 ALD Vacuum Technologies GmbH Procédé et installation de refroidissement de pièces à usiner, en particulier pour leur durcissement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2138363B1 (de) * 1971-07-31 1973-01-18 Ludwig-Ofag-Indugas Industrieofenanlagen Gmbh, 4300 Essen Anlage zum abkuehlen von singulaerem waermegut unter schutzgas
SU601317A1 (ru) * 1976-07-08 1978-04-05 Elbert Anatolij Ya Толкательна электропечь
DE3233361A1 (de) * 1982-09-08 1984-03-15 Vsesojuznyj naučno-issledovatel'skij, proektno-konstruktorskij i technologičeskij institut elektrotermiČeskogo oborudovanija, Moskva Kontinuierlicher elektroofen zur chemisch-thermischen behandlung von stahlteilen
EP0313888A1 (fr) * 1987-10-28 1989-05-03 Leybold Durferrit GmbH Méthode pour le traitement thermique de pièces métalliques
EP0727498A1 (fr) * 1995-01-23 1996-08-21 ALD Vacuum Technologies GmbH Procédé et installation de refroidissement de pièces à usiner, en particulier pour leur durcissement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1228828A3 (fr) * 2001-02-02 2005-07-13 The Boc Group, Inc. Refroidissement accéléré de produits frittés métalliques
US7018584B2 (en) 2001-02-02 2006-03-28 The Boc Group, Inc. Method and apparatus for metal processing
EP1233078A2 (fr) * 2001-02-20 2002-08-21 Linde Aktiengesellschaft Procédé de trempe de pièces métalliques
EP1233078A3 (fr) * 2001-02-20 2003-11-26 Linde Aktiengesellschaft Procédé de trempe de pièces métalliques
WO2007054398A1 (fr) * 2005-11-08 2007-05-18 Robert Bosch Gmbh Installation de conversion a sec du reseau du materiau d'un produit semi-fini
US9303294B2 (en) 2005-11-08 2016-04-05 Robert Bosch Gmbh Installation for the dry transformation of a material microstructure of semi-finished products

Also Published As

Publication number Publication date
EP0962538A3 (fr) 2003-09-24
DE19824574A1 (de) 1999-12-09

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