EP0796920B1 - Vorrichtung zum Abschrecken metallischer Werkstücke - Google Patents

Vorrichtung zum Abschrecken metallischer Werkstücke Download PDF

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Publication number
EP0796920B1
EP0796920B1 EP96110117A EP96110117A EP0796920B1 EP 0796920 B1 EP0796920 B1 EP 0796920B1 EP 96110117 A EP96110117 A EP 96110117A EP 96110117 A EP96110117 A EP 96110117A EP 0796920 B1 EP0796920 B1 EP 0796920B1
Authority
EP
European Patent Office
Prior art keywords
workpieces
quenching
nozzle
nozzles
nozzle array
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.)
Expired - Lifetime
Application number
EP96110117A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0796920A1 (de
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
Original Assignee
Ipsen International 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 Ipsen International GmbH filed Critical Ipsen International GmbH
Publication of EP0796920A1 publication Critical patent/EP0796920A1/de
Application granted granted Critical
Publication of EP0796920B1 publication Critical patent/EP0796920B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 that at least partially from has a limited space for receiving the workpieces, the Dusenfeld (5) Above the workpieces to be cooled (3) is arranged adjustable in height.
  • 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 the gas velocity at the outlet from the nozzle is given a correspondingly high gas pressure in front of the nozzle is greatly increased that heat transfer coefficients> 1000 watts / m 2 K can be achieved.
  • a generic quenching device with a nozzle field is known for example from WO-A-92/02316. This device is used to extrude profiles on a roller conveyor through the Device promoted to deter, with the extruded profiles through above and arranged below the roller conveyor nozzle fields with air and / or water.
  • a quenching device with a nozzle field is also known from DE-PS-4208 485, in which it is known The quenching device is used to hold individual workpieces Space essentially closed and the nozzle field to the Shape of the surface to be cooled of the inserted workpiece adapted designed.
  • 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.
  • an optimal Combination of good quenching performance when using a nozzle array achieved with a variably usable device.
  • the workpieces to be quenched have a wide variety of shapes and sizes, among other things by simple Height adjustment of the nozzle field an adaptation of the nozzle field to the workpieces to be deterred is reached.
  • the nozzle field of the quenching device according to the invention in contrast to the nozzle field the device known from DE-PS 42 08 485 does not correspond to the Shape of the surface to be cooled is formed, but instead the Workpieces to be cooled essentially only in the vertical direction with the Quench gas is not an individual adjustment of the nozzle field to new workpiece shapes and / or workpiece sizes.
  • the distance a between the nozzle field and the workpiece surface is preferably so dimensioned that the core jet of the gas flow emerging from the nozzle still at about the nozzle exit speed on the workpiece surface meets.
  • Experimental tests have shown that the speed in the core of the gas flow emerging from the nozzle up to about 7 times Diameter of the nozzle remains constant.
  • the nozzle field and the workpieces are movable relative to each other. This relative movement between the nozzle field on the one hand and workpieces on the other hand it is achieved that from the individual separate nozzles escaping gas jets at least the entire one facing the nozzle field Paint over the workpiece surface.
  • Embodiment of the invention is that facing the workpieces Surface of the nozzle array parallel to the grate carrying the workpieces formed, the nozzles perpendicular to the grate surface are aligned. With such a trained nozzle field is on formed in a particularly simple manner a nozzle field over which to be cooled Workpieces can be flowed against vertically with the quenching gas.
  • the relative movement between the nozzle field and the workpieces is at the quenching device designed according to the invention thereby achieved that the nozzle field and / or the grate for receiving the workpieces to be cooled performing an oscillating or circular movement is drivable.
  • As the speed of rotation for the nozzle field or Rust have rotation speeds of 10 to 300 Revolutions / min proved to be particularly suitable.
  • a storage space is formed in the direction of flow in front of the nozzle field. This storage space serves to evenly gas the entire nozzle field supply.
  • the Gas duct In order to be able to separate the quenching chamber from the gas duct, the Gas duct arranged in front of the storage space and in front of the fan flaps. Through these flaps on the one hand a loss of quenching gas during Batch changes can be avoided and, on the other hand, the Fan always runs at nominal speed, so that the full cooling capacity Available.
  • the nozzles are as Bores with a diameter d of preferably ⁇ 5 mm. This diameter has proven to be particularly advantageous to the to achieve the desired high gas outlet speeds.
  • the invention proposes that the nozzles as rectangular slots are formed.
  • the quenching device shown in FIG. 1 has a quenching chamber 1 on, for example, both arranged at the end of a roller hearth furnace can be operated in vacuum mode as well as under atmospheric pressure.
  • a grate 2 for cooling is to be cooled Workpieces 3 arranged.
  • Workpieces 3 Above that arranged on the grate 2 Workpieces 3 is arranged in a nozzle plate 4, a nozzle field 5 the nozzles 6 of quenching gas circulated through a gas channel 7 from above can flow forth to the workpieces 3.
  • the nozzle plate 4 is different workpiece shapes and workpiece sizes with the nozzle field 5 relative to the grate 2 adjustable in height in the Quenching chamber 1 arranged, as shown in Fig. 1 by a double arrow is shown.
  • the quenching gas is circulated in the quenching chamber 1 via a fan 9 driven by a motor 8 such that the quenching gas reaches the storage space 10 in the flow direction shown by the arrow via the gas channel 7.
  • 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, the is necessary to cool the quenching gas back over the Fan 9 back into gas duct 7.
  • the Workpieces 3 and the nozzle field 5 can be moved relative to one another.
  • the grate 2 for receiving the workpieces 3 mounted on rollers 13, over which the grate 2 rotated under the nozzle field 5 can be. It is also possible to rotate the nozzle field 5 by To move the nozzle plate 4 relative to the workpieces 3.
  • the nozzle array 5 is as flat nozzle field shown, the 3 facing the workpieces Surface is formed parallel to the grate 2. Not just a purely vertical one
  • the nozzle array 5, as shown in Fig. 2 be designed so that the The surface of the nozzle array 5 facing the workpieces 3 is wavy symmetrically with surface strips 14 aligned at an angle to one another is trained.
  • the wavy structure of the nozzle field 5 is so formed that the included angle ⁇ of each wave crest and of each 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 from the vertical flow plane according to FIG.
  • the nozzles 6 are offset when viewed in the longitudinal direction of the surface strips 14 arranged to each other.
  • To set a new nozzle array 5 are the Nozzle plates 4 in the manner of a drawer in a simple way from recordings 15 can be pulled out and inserted into these receptacles 15 again.
  • a quenching device designed in this way is characterized by this from that by a simple height adjustment of the nozzle field 5 Device for different workpiece shapes and workpiece sizes can be adjusted without lengthy retrofitting work are necessary and on the other hand the shape of the nozzle field 5 to the special The shape of the workpiece 3 to be quenched would have to be adapted.

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)
  • Furnace Charging Or Discharging (AREA)
  • Baking, Grill, Roasting (AREA)
EP96110117A 1996-02-21 1996-06-22 Vorrichtung zum Abschrecken metallischer Werkstücke Expired - Lifetime EP0796920B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=8019785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96110117A Expired - Lifetime EP0796920B1 (de) 1996-02-21 1996-06-22 Vorrichtung zum Abschrecken metallischer Werkstücke

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8663547B2 (en) 2004-10-29 2014-03-04 Consolidated Engineering Company, Inc. High pressure heat treatment system

Families Citing this family (11)

* 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
ES2215513T3 (es) 2000-04-14 2004-10-16 Ipsen International Gmbh Procedimiento y dispositivo para el tratamiento termico de piezas de trabajo metalicas.
EP1490524B2 (de) † 2002-03-15 2009-01-21 Schwartz, Eva Verfahren und vorrichtung zur konvektiven wärmeübertragung zwischen einem wärmeübertragunsmittel und der oberfläche eines werkstückes
WO2005123970A1 (en) * 2004-06-15 2005-12-29 Narasimhan Gopinath A process and device for hardening metal parts
EP2139628B1 (en) * 2007-03-29 2013-02-27 Consolidated Engineering Company, Inc. Vertical heat treatment system
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
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
DE102009000201B4 (de) 2009-01-14 2018-06-21 Robert Bosch Gmbh Chargiergestell sowie Abschreckvorrichtung mit Chargiergestell
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

Family Cites Families (11)

* 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
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
JPS61194119A (ja) * 1985-02-21 1986-08-28 Nippon Steel Corp 連続焼鈍設備における鋼帯冷却方法
JPS63241123A (ja) * 1987-03-27 1988-10-06 Sumitomo Metal Ind Ltd 鋼帯の冷却方法
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
DE4024605A1 (de) * 1990-08-02 1992-02-06 Wsp Ingenieurgesellschaft Fuer Vorrichtung zur abkuehlung von strangpressprofilen
DE4208485C2 (de) * 1992-03-17 1997-09-04 Wuenning Joachim Verfahren und Vorrichtung zum Abschrecken metallischer Werkstücke
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8663547B2 (en) 2004-10-29 2014-03-04 Consolidated Engineering Company, Inc. High pressure heat treatment system

Also Published As

Publication number Publication date
ATE203779T1 (de) 2001-08-15
ES2161317T3 (es) 2001-12-01
EP0796920A1 (de) 1997-09-24
DE29603022U1 (de) 1996-04-18
DE59607412D1 (de) 2001-09-06

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