EP0796920A1 - Dispositif de trempe de pièces métalliques - Google Patents

Dispositif de trempe de pièces métalliques Download PDF

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Publication number
EP0796920A1
EP0796920A1 EP96110117A EP96110117A EP0796920A1 EP 0796920 A1 EP0796920 A1 EP 0796920A1 EP 96110117 A EP96110117 A EP 96110117A EP 96110117 A EP96110117 A EP 96110117A EP 0796920 A1 EP0796920 A1 EP 0796920A1
Authority
EP
European Patent Office
Prior art keywords
workpieces
nozzle field
quenching
nozzle
nozzles
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
EP96110117A
Other languages
German (de)
English (en)
Other versions
EP0796920B1 (fr
Inventor
Wolfgang Peter
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.)
Ipsen International GmbH
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Ipsen International GmbH
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Filing date
Publication date
Application filed by Ipsen International GmbH filed Critical Ipsen International GmbH
Publication of EP0796920A1 publication Critical patent/EP0796920A1/fr
Application granted granted Critical
Publication of EP0796920B1 publication Critical patent/EP0796920B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C21D1/767—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
    • 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
    • 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

Definitions

  • the invention relates to a device for quenching metallic workpieces with a quenching chamber with a space for receiving the workpieces that is at least partially delimited by a nozzle field.
  • Generic devices for quenching metallic workpieces are used in order to be able to subject the workpieces to specific cooling after heat treatment, in order to achieve the desired hardness profile in the workpiece.
  • a quenching intensity similar to that of oil or water quenching in gas quenching it is known in practice to use gas nozzle arrays with a small nozzle diameter, so that with a correspondingly high gas pressure in front of the nozzle, the gas velocity as it emerges from the nozzle is greatly increased that heat transfer numbers> 1000 watts / m 2 K can be achieved.
  • a generic quenching device with a nozzle field is known for example from DE-PS 42 08 485.
  • the space used to hold individual workpieces is designed to be essentially closed and the nozzle field is adapted to the shape of the surface of the workpiece to be cooled.
  • This individual adaptation of the nozzle field to the shape of the workpiece to be quenched, together with the horizontal flow of the workpieces with the quenching gas on both sides, enables a very effective and targeted quenching of the workpieces to be treated, but a disadvantage of this known device is that the nozzle field must always be adapted exactly to the work piece to be quenched.
  • the invention has for its object to improve a device for quenching metallic workpiece of the type mentioned in such a way that the device can be used for a wide variety of workpiece shapes and workpiece sizes while maintaining the quenching performance.
  • the height of the nozzle field, arranged above the workpieces to be cooled and arranged on a grate allows the workpieces with the quenching gas to flow essentially vertically, the distance a between the nozzle field and the workpiece surface being a maximum of 7 times is the diameter of the nozzles and the nozzle field and the workpieces are movable relative to each other.
  • the quenching device With the quenching device according to the invention, an optimal combination of the good quenching performance is achieved when using a nozzle array with a variably usable device.
  • the nozzle field As an essentially flat nozzle field above the workpieces to be quenched, the workpieces to be quenched can have a wide variety of shapes and sizes, since the nozzle field can be adapted to the workpieces to be quenched by simply adjusting the height of the nozzle field.
  • the nozzle field of the quenching device according to the invention in contrast to the nozzle field of the device known from DE-PS 42 08 485, is not designed according to the shape of the surface to be cooled, but instead the Workpieces to be cooled are only subjected to the quenching gas in the vertical direction, no individual adaptation of the nozzle field to new workpiece shapes and / or workpiece sizes is necessary.
  • the distance a between the nozzle field and the workpiece surface is dimensioned such that the core jet of the gas flow emerging from the nozzle still hits the workpiece surface at approximately the nozzle exit velocity.
  • Experimental tests have shown that the speed in the core of the gas flow emerging from the nozzle remains constant up to about 7 times the diameter of the nozzle.
  • the nozzle field and the workpieces can be moved relative to one another. This relative movement between the nozzle field on the one hand and workpieces on the other hand ensures that the gas jets emerging from the individual separate nozzles sweep at least over the entire workpiece surface facing the nozzle field.
  • the surface of the nozzle field facing the workpieces is formed parallel to the grate carrying the workpieces, the nozzles being oriented perpendicularly in the direction of the grate surface.
  • the surface of the nozzle field facing the workpieces is designed in a wave-like manner symmetrically with surface strips oriented at an angle to one another, the included angle of each wave crest and each wave trough having the same amount of at least 130 ° and the nozzles being arranged at right angles in the surface strips are.
  • the arrangement of the nozzles in the surface strips aligned at an angle to one another can ensure that the flow of the quenching gas emerging from the nozzles is deflected from the vertical at an angle of up to 25 °, which in addition to the mainly vertical Inflow onto the surfaces of the workpieces to be cooled can also be achieved against the side surfaces of the workpieces.
  • a nozzle field is still arranged above the workpieces to be cooled, such a nozzle field is also suitable for quenching different workpiece shapes and workpiece sizes.
  • the nozzles of two surface strips facing one another are arranged offset from one another along these surface strips, viewed in the longitudinal direction of the surface strips.
  • the relative movement between the nozzle field and the workpieces can be achieved in a quenching device designed according to the invention in that the nozzle field and / or the grate for receiving the workpieces to be cooled can be driven to perform an oscillating or circular movement.
  • rotational speeds for the nozzle field or the grate rotational speeds of 10 to 300 revolutions / min have proven to be particularly suitable.
  • the quenching gas strikes the workpieces to be cooled over the entire operating time of the quenching device with a uniform gas pressure and a uniform gas outlet speed.
  • a storage space is formed in the flow direction in front of the nozzle field. This storage space serves to supply the entire nozzle field with gas evenly.
  • flaps are arranged in the gas duct in front of the storage space and in front of the fan. With these flaps, on the one hand a loss of quenching gas during the batch change can be avoided and on the other hand it can be achieved that the fan always runs at nominal speed, so that the full cooling capacity is available.
  • the nozzles are designed as bores with a diameter d of preferably ⁇ 5 mm. This diameter has proven to be particularly advantageous in order to achieve the desired high gas outlet velocities.
  • the nozzles are designed as rectangular slots.
  • the quenching device shown in FIG. 1 has a quenching chamber 1 which, for example, is arranged at the end of a roller hearth furnace and can be operated both in vacuum mode and under atmospheric pressure.
  • a grate 2 for receiving workpieces 3 to be cooled is arranged in the quenching chamber 1.
  • a nozzle field 5 is arranged in a nozzle plate 4, via the nozzles 6 of which quenching gas circulated through a gas channel 7 can flow onto the workpieces 3 from above.
  • the height of the nozzle plate 4 with the nozzle field 5 relative to the grate 2 is arranged in the quenching chamber 1, as shown in FIG. 1 by a double arrow.
  • the quenching gas is so in via a fan 9 driven by a motor 8 the quenching chamber 1 circulates that the quenching gas reaches the storage space 10 via the gas channel 7 in the flow direction shown by the arrow.
  • flaps 11 are opened, which allow the quenching gas to flow from the gas channel 7 via the storage space 10 to the nozzle field 5 and via the workpieces 3 back to the fan 9.
  • the nozzles 6 of the nozzle array 5 have a diameter d of ⁇ 5 mm, as a result of which the quenching gas circulated via the fan 9 through the gas channel 7 is accelerated so strongly in the nozzles 6 that heat transfer coefficients of approximately 1000 watts / m 2 K on the workpiece surfaces can be achieved.
  • the best quenching intensities are achieved when the distance a between the nozzle field 5 and the workpiece surface of the workpieces 3 is at most 7 times the diameter d of a nozzle 6.
  • the quenching gas flows after passing through the grate 2 via a heat exchanger 12, which is necessary to cool the quenching gas back again, via the fan 9 back into the gas channel 7.
  • the workpieces 3 and the nozzle array 5 can be moved relative to one another.
  • the grate 2 for receiving the workpieces 3 is mounted on rollers 13, via which the grate 2 can be rotated under the nozzle field 5. It is also possible to move the nozzle field 5 relative to the workpieces 3 by rotating the nozzle plate 4.
  • the nozzle field 5 is shown as a flat nozzle field, the surface of which facing the workpieces 3 is formed parallel to the grate 2.
  • the nozzle field 5 can, as shown in FIG. 2, be designed such that the surface of the nozzle field 5 facing the workpieces 3 is wave-shaped symmetrical with angularly aligned surface strips 14 is formed.
  • the wave-shaped structure of the nozzle field 5 is designed such that the included angle ⁇ of each wave crest and each wave trough has the same amount of at least 130 °.
  • the Nozzles 6 arranged at right angles in the surface strips 14 thus have a maximum displacement of 25 ° from the vertical flow plane according to FIG. 1.
  • the nozzles 6 are arranged offset with respect to one another in the longitudinal direction of the surface strips 14.
  • the nozzle plates 4 can be easily pulled out of receptacles 15 in the manner of a drawer and inserted into these receptacles 15 again.
  • a quenching device designed in this way is characterized in that the device can be adapted to different workpiece shapes and workpiece sizes by simple height adjustment of the nozzle field 5, without lengthy conversion work being necessary on the one hand and the shape of the nozzle field 5 to the special shape of the workpiece 3 to be quenched on the other hand should be adjusted.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)
  • Baking, Grill, Roasting (AREA)
  • Furnace Charging Or Discharging (AREA)
EP96110117A 1996-02-21 1996-06-22 Dispositif de trempe de pièces métalliques Expired - Lifetime EP0796920B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29603022U 1996-02-21
DE29603022U DE29603022U1 (de) 1996-02-21 1996-02-21 Vorrichtung zum Abschrecken metallischer Werkstücke

Publications (2)

Publication Number Publication Date
EP0796920A1 true EP0796920A1 (fr) 1997-09-24
EP0796920B1 EP0796920B1 (fr) 2001-08-01

Family

ID=8019785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96110117A Expired - Lifetime EP0796920B1 (fr) 1996-02-21 1996-06-22 Dispositif de trempe de pièces métalliques

Country Status (4)

Country Link
EP (1) EP0796920B1 (fr)
AT (1) ATE203779T1 (fr)
DE (2) DE29603022U1 (fr)
ES (1) ES2161317T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005123970A1 (fr) * 2004-06-15 2005-12-29 Narasimhan Gopinath Procédé et dispositif pour le durcissement de pièces métalliques
WO2008121671A3 (fr) * 2007-03-29 2008-12-18 Cons Eng Co Inc Système de traitement thermique vertical
EP1490524B2 (fr) † 2002-03-15 2009-01-21 Schwartz, Eva Procede et un dispositif pour transmettre la chaleur par convection entre un support de transmission thermique et la surface d'une piece
CN108120301A (zh) * 2018-02-05 2018-06-05 中国重型机械研究院股份公司 一种新型的在线加热用导向装置
DE102019204869A1 (de) * 2019-04-05 2020-10-08 Audi Ag Abschreckvorrichtung zur chargenweisen Abschreckkühlung von Metallbauteilen

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29603022U1 (de) * 1996-02-21 1996-04-18 Ipsen Industries International GmbH, 47533 Kleve Vorrichtung zum Abschrecken metallischer Werkstücke
GB9929956D0 (en) 1999-12-17 2000-02-09 Boc Group Plc Qenching heated metallic objects
EP1154024B1 (fr) * 2000-04-14 2004-03-24 Ipsen International GmbH Procédé et dispositif pour le traitement thermique de pièces métalliques
US20060103059A1 (en) 2004-10-29 2006-05-18 Crafton Scott P High pressure heat treatment system
FR2917752B1 (fr) 2007-06-22 2019-06-28 Montupet Sa Procede de traitement thermique de pieces de fonderie mettant en oeuvre une trempe a l'air et systeme pour la mise en oeuvre du procede
FR2917751B1 (fr) 2007-06-22 2011-04-01 Montupet Sa Procede de traitement thermique de culasses en alliage a base d'aluminuim, et culasses presentant des proprietes de resistance a la fatigue ameliorees
DE102009000201B4 (de) 2009-01-14 2018-06-21 Robert Bosch Gmbh Chargiergestell sowie Abschreckvorrichtung mit Chargiergestell

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3321554C1 (de) * 1982-07-16 1984-02-16 Ipsen Industries International Gmbh, 4190 Kleve Industrieofen zur Wärmebehandlung metallischer Werkstücke
US4704167A (en) * 1985-02-21 1987-11-03 Nippon Steel Corporation Method and apparatus for cooling steel strip
JPS63241123A (ja) * 1987-03-27 1988-10-06 Sumitomo Metal Ind Ltd 鋼帯の冷却方法
WO1992002316A1 (fr) * 1990-08-02 1992-02-20 Wsp Ingenieurgesellschaft Für Wärmetechnik, Strömungstechnik Und Prozesstechnik Mbh Dispositif de refroidissement de profiles extrudes
DE4208485C1 (fr) * 1992-03-17 1993-02-11 Joachim Dr.-Ing. 7250 Leonberg De Wuenning
DE4234285A1 (de) * 1992-10-10 1994-04-14 Heimsoth Verwaltungen Verfahren zur Wärmebehandlung von metallischem Gut
DE4312627A1 (de) * 1993-04-19 1994-10-20 Hauzer Holding Verfahren und Vorrichtung zur Wärmebehandlung von Gegenständen
DE29603022U1 (de) * 1996-02-21 1996-04-18 Ipsen Industries International GmbH, 47533 Kleve Vorrichtung zum Abschrecken metallischer Werkstücke

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322386A1 (de) * 1983-06-22 1985-01-10 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden Verfahren zur kuehlung einer charge nach einer waermebehandlung und ofenanlage zur durchfuehrung des verfahrens
DE3935929C2 (de) * 1989-10-27 1997-02-20 Innova Zug Ag Vorrichtung zur Schnellkühlung von zylindrischem Halbzeug
DE4002546C2 (de) * 1990-01-29 1994-07-14 Wsp Ingenieurgesellschaft Fuer Hochkonvektions-Gasstrahldüsenstrecke für über Rollen geführtes, flächenhaftes Gut, sowie Verfahren zu deren Betrieb

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3321554C1 (de) * 1982-07-16 1984-02-16 Ipsen Industries International Gmbh, 4190 Kleve Industrieofen zur Wärmebehandlung metallischer Werkstücke
US4704167A (en) * 1985-02-21 1987-11-03 Nippon Steel Corporation Method and apparatus for cooling steel strip
JPS63241123A (ja) * 1987-03-27 1988-10-06 Sumitomo Metal Ind Ltd 鋼帯の冷却方法
WO1992002316A1 (fr) * 1990-08-02 1992-02-20 Wsp Ingenieurgesellschaft Für Wärmetechnik, Strömungstechnik Und Prozesstechnik Mbh Dispositif de refroidissement de profiles extrudes
DE4208485C1 (fr) * 1992-03-17 1993-02-11 Joachim Dr.-Ing. 7250 Leonberg De Wuenning
DE4234285A1 (de) * 1992-10-10 1994-04-14 Heimsoth Verwaltungen Verfahren zur Wärmebehandlung von metallischem Gut
DE4312627A1 (de) * 1993-04-19 1994-10-20 Hauzer Holding Verfahren und Vorrichtung zur Wärmebehandlung von Gegenständen
DE29603022U1 (de) * 1996-02-21 1996-04-18 Ipsen Industries International GmbH, 47533 Kleve Vorrichtung zum Abschrecken metallischer Werkstücke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 042 (C - 564) 30 January 1989 (1989-01-30) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1490524B2 (fr) † 2002-03-15 2009-01-21 Schwartz, Eva Procede et un dispositif pour transmettre la chaleur par convection entre un support de transmission thermique et la surface d'une piece
WO2005123970A1 (fr) * 2004-06-15 2005-12-29 Narasimhan Gopinath Procédé et dispositif pour le durcissement de pièces métalliques
WO2008121671A3 (fr) * 2007-03-29 2008-12-18 Cons Eng Co Inc Système de traitement thermique vertical
EP2489452A3 (fr) * 2007-03-29 2013-05-01 Consolidated Engineering Company, Inc. Système et procédé de fabrication et de traitement thermique pour des pièces en métal coulées
US20150343531A1 (en) * 2007-03-29 2015-12-03 Consolidated Engineering Company, Inc. Vertical heat treatment system
CN108120301A (zh) * 2018-02-05 2018-06-05 中国重型机械研究院股份公司 一种新型的在线加热用导向装置
DE102019204869A1 (de) * 2019-04-05 2020-10-08 Audi Ag Abschreckvorrichtung zur chargenweisen Abschreckkühlung von Metallbauteilen

Also Published As

Publication number Publication date
ES2161317T3 (es) 2001-12-01
EP0796920B1 (fr) 2001-08-01
ATE203779T1 (de) 2001-08-15
DE29603022U1 (de) 1996-04-18
DE59607412D1 (de) 2001-09-06

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