EP0087633A1 - Process and device for heating or cooling quenching media - Google Patents

Process and device for heating or cooling quenching media Download PDF

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Publication number
EP0087633A1
EP0087633A1 EP83101258A EP83101258A EP0087633A1 EP 0087633 A1 EP0087633 A1 EP 0087633A1 EP 83101258 A EP83101258 A EP 83101258A EP 83101258 A EP83101258 A EP 83101258A EP 0087633 A1 EP0087633 A1 EP 0087633A1
Authority
EP
European Patent Office
Prior art keywords
heating
cooling
bath
heat transfer
heat
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Withdrawn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
EP83101258A
Other languages
German (de)
French (fr)
Inventor
Wilhelm Hauke
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.)
Georg Fischer AG
Original Assignee
Georg Fischer 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 Georg Fischer AG filed Critical Georg Fischer AG
Publication of EP0087633A1 publication Critical patent/EP0087633A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0206—Heat exchangers immersed in a large body of liquid
    • F28D1/0213—Heat exchangers immersed in a large body of liquid for heating or cooling a liquid in a tank
    • 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
    • C21D1/63—Quenching devices for bath quenching

Definitions

  • the present invention relates to a method and an apparatus for heating or cooling quenching media for the heat treatment of components.
  • the quench baths are electrically heated, e.g. by means of resistance heating.
  • the cooling takes place through a water circuit.
  • Air cooling is also possible, however, too expensive, since large cooling surfaces are required.
  • the object of the present invention is to propose a method and a device for heating or cooling quenching media of the type mentioned at the outset, which is more economical and easier to handle and is less technically complex and therefore less prone to failure than the known methods.
  • the figure shows a schematic arrangement of the device for heating or cooling a quench bath.
  • a quenching bath 1 is filled with a quenching medium 2, preferably oil.
  • the quenching bath 1 is connected to a conventional heat exchanger unit 4 via a discharge and supply pipe 3.
  • the tube 3 is arranged in a spiral along the inner wall of the outer surface of the bath, so that the heating or cooling coils 3a extend from the bottom of the bath to below the bath level.
  • the heat transfer oil is cooled down until an equalization has taken place and the target temperature of the bath is reached again.
  • the cooling can take place in a known manner via a device for water cooling the heat transfer oil (not shown in the figure), in which a cooling liquid circulates in a closed circuit.

Abstract

A process and device for heating or cooling quench media for the heat treatment of components are proposed. The desired nominal temperature of the medium (1) is maintained in each case by means of a heat carrier fluid. The fluid circulates in heating or cooling coils (3), depending on the direction of the deviation of the temperature of the medium from the preset nominal temperature. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zum Heizen oder Kühlen von Abschreckmedien für die Wärmebehandlung von Bauteilen.The present invention relates to a method and an apparatus for heating or cooling quenching media for the heat treatment of components.

In bisher bekannten Verfahren werden die Abschreckbäder elektrisch beheizt, z.B. mittels Widerstandsheizung. Die Kühlung erfolgt durch einen Wasserkreislauf. Dabei besteht die Gefahr von Rohrdurchbruch infolge von Korrosion was wiederum zur Explosionsgefahr führt. Luftkühlung ist auch möglich jedoch zu aufwendig, da grosse Kühlflächen erforderlich sind.In previously known processes, the quench baths are electrically heated, e.g. by means of resistance heating. The cooling takes place through a water circuit. There is a risk of pipe breakthrough due to corrosion, which in turn leads to the risk of explosion. Air cooling is also possible, however, too expensive, since large cooling surfaces are required.

Aufgabe der vorliegenden Erfindung ist es ein Verfahren und eine Vorrichtung zum Heizen oder zum Kühlen von Abschreckmedien der eingangs genannten Art vorzuschlagen, das in der Ausführung wirtschaftlicher und einfacher zu handhaben ist sowie technisch weniger aufwendig und dadurch weniger störanfällig ist als die bekannten Verfahren.The object of the present invention is to propose a method and a device for heating or cooling quenching media of the type mentioned at the outset, which is more economical and easier to handle and is less technically complex and therefore less prone to failure than the known methods.

Erfindungsgemäss wird diese Aufgabe durch die Lehre der Ansprüche 1 und 2 gelöst.According to the invention, this object is achieved by the teaching of claims 1 and 2.

Weitere vorteilhafte Ausgestaltungen gehen aus den abhängigen Ansprüchen hervor.Further advantageous refinements emerge from the dependent claims.

Ein Ausführungsbeispiel wird nachfolgend anhand der einzigen Figur näher erläutert.An exemplary embodiment is explained in more detail below with reference to the single figure.

Die Figur zeigt eine schematische Anordnung der Vorrichtung zum Heizen oder Kühlen eines Abschreckbades.The figure shows a schematic arrangement of the device for heating or cooling a quench bath.

Ein Abschreckbad 1 ist mit einem Abschreckmedium 2, vorzugsweise Oel gefüllt. Um die Temperatur des Abschreckmediums konstant zu halten ist das Abschreckbad 1 mit einem herkömmlichen Wärmeaustauscheraggregat 4 über ein Ab- und Zuleitungsrohr 3 verbunden. Im Abschreckbad 1 wird das Rohr 3 spiralenförmig entlang der Innenwand der Mantelfläche des Bades angeordnet, so dass die Heiz- oder Kühlschlangen 3a vom Boden des Bades bis unter den Badspiegel reichen.A quenching bath 1 is filled with a quenching medium 2, preferably oil. In order to keep the temperature of the quenching medium constant, the quenching bath 1 is connected to a conventional heat exchanger unit 4 via a discharge and supply pipe 3. In the quench bath 1, the tube 3 is arranged in a spiral along the inner wall of the outer surface of the bath, so that the heating or cooling coils 3a extend from the bottom of the bath to below the bath level.

Die Beheizung des Bades erfolgt folgendermassen:

  • Eine gewünschte Temperatur des Abschreckbades z.B. 2400 C ist vorgegeben. Ein Wärmeträgeröl wird im Wärmetauscheraggregat 4 aufgeheizt und über die Heizschlangen 3a durch das Bad zirkuliert bis die vorgegebene Soll-Temperatur des Bades erreicht ist. Dann werden die Bauteile ins Bad getaucht. In der Folge wird sich die Temperatur des Bades wegen der höheren Temperatur der Bauteile erhöhen.
The bath is heated as follows:
  • A desired temperature of the quench bath, for example 240 ° C., is specified. A heat transfer oil is heated in the heat exchanger unit 4 and circulated through the bath via the heating coils 3a until the predetermined target temperature of the bath is reached. Then the components are immersed in the bathroom. As a result, the temperature of the bath will increase due to the higher temperature of the components.

Dann wird das Wärmeträgeröl soweit abgekühlt bis ein Ausgleich stattgefunden hat und die Soll-Temperatur des Bades wieder erreicht ist. Die Abkühlung kann auf bekannte Art und Weise über eine Vorrichtung zur Wasserkühlung des Wärmeträgeröls (in der Figur nicht dargestellt) erfolgen, bei der eine Kühlflüssigkeit in einem geschlossenen Kreislauf umläuft.Then the heat transfer oil is cooled down until an equalization has taken place and the target temperature of the bath is reached again. The cooling can take place in a known manner via a device for water cooling the heat transfer oil (not shown in the figure), in which a cooling liquid circulates in a closed circuit.

Claims (6)

1. Verfahren zum Heizen oder Kühlen von Abschreckmedien für die Wärmebehandlung von Bauteilen, dadurch gekennzeichnet, dass die Soll-Temperatur des Abschreckbades mittels eines Wärmeträgermediums über einen Heiz-oder Kühlmittelkreislauf geregelt wird.1. A method for heating or cooling quenching media for the heat treatment of components, characterized in that the target temperature of the quenching bath is regulated by means of a heat transfer medium via a heating or cooling medium circuit. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, dass das Wärmeträgermedium in einem geschlossenen Kreislauf umläuft und die gewünschte Temperatur mittels eines wärmeübertragenden Verteilorgans auf das Abschreckbad überträgt.2. Device for carrying out the method according to claim 1, characterized in that the heat transfer medium circulates in a closed circuit and transfers the desired temperature to the quenching bath by means of a heat-transferring organ. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass das wärmeübertragende Verteilorgan Heiz- oder Kühlschlangen sind.3. Device according to claim 2, characterized in that the heat-transferring distribution element are heating or cooling coils. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Heiz- oder Kühlschlangen entlang der Innenwandung der Mantelfläche des Abschreckbades angeordnet sind.4. The device according to claim 3, characterized in that the heating or cooling coils are arranged along the inner wall of the outer surface of the quenching bath. 5. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Wärmeträgermedium eine Flüssigkeit ist.5. The device according to claim 3, characterized in that the heat transfer medium is a liquid. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass das Wärmeträgermedium Oel ist.6. The device according to claim 5, characterized in that the heat transfer medium is oil.
EP83101258A 1982-02-26 1983-02-10 Process and device for heating or cooling quenching media Withdrawn EP0087633A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH119182A CH663798A5 (en) 1982-02-26 1982-02-26 METHOD AND APPARATUS FOR HEATING OR COOLING QUENCHING MEDIA.
CH1191/82 1982-02-26

Publications (1)

Publication Number Publication Date
EP0087633A1 true EP0087633A1 (en) 1983-09-07

Family

ID=4204631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101258A Withdrawn EP0087633A1 (en) 1982-02-26 1983-02-10 Process and device for heating or cooling quenching media

Country Status (2)

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EP (1) EP0087633A1 (en)
CH (1) CH663798A5 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE422181A (en) *
DE352133C (en) * 1922-04-21 Otto Ernst Oil retention apparatus with oil circulation
US2390030A (en) * 1942-01-12 1945-11-27 Mid West Sales & Service Inc Chilling cabinet
US2672430A (en) * 1950-02-01 1954-03-16 Simons Abraham Heat-treating metal objects
US3972751A (en) * 1973-07-17 1976-08-03 Owego Heat Treat, Inc. Method of heat treating ferrous workpieces
FR2319097A1 (en) * 1975-07-23 1977-02-18 Hucke Hans HEAT TRANSFER EQUIPMENT
US4055333A (en) * 1975-06-30 1977-10-25 Owego Heat Treat, Inc. Apparatus for heat treating work

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE422181A (en) *
DE352133C (en) * 1922-04-21 Otto Ernst Oil retention apparatus with oil circulation
US2390030A (en) * 1942-01-12 1945-11-27 Mid West Sales & Service Inc Chilling cabinet
US2672430A (en) * 1950-02-01 1954-03-16 Simons Abraham Heat-treating metal objects
US3972751A (en) * 1973-07-17 1976-08-03 Owego Heat Treat, Inc. Method of heat treating ferrous workpieces
US4055333A (en) * 1975-06-30 1977-10-25 Owego Heat Treat, Inc. Apparatus for heat treating work
FR2319097A1 (en) * 1975-07-23 1977-02-18 Hucke Hans HEAT TRANSFER EQUIPMENT

Also Published As

Publication number Publication date
CH663798A5 (en) 1988-01-15

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Inventor name: HAUKE, WILHELM