EP0422353A2 - Four pour le traitement thermique partiel d'outils - Google Patents

Four pour le traitement thermique partiel d'outils Download PDF

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Publication number
EP0422353A2
EP0422353A2 EP90115231A EP90115231A EP0422353A2 EP 0422353 A2 EP0422353 A2 EP 0422353A2 EP 90115231 A EP90115231 A EP 90115231A EP 90115231 A EP90115231 A EP 90115231A EP 0422353 A2 EP0422353 A2 EP 0422353A2
Authority
EP
European Patent Office
Prior art keywords
furnace
chamber
heating chamber
tools
vacuum
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
EP90115231A
Other languages
German (de)
English (en)
Other versions
EP0422353B1 (fr
EP0422353A3 (en
Inventor
Bernd Dr. Edenhofer
Peter Dipl.-Ing. Wolfgang
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 EP0422353A2 publication Critical patent/EP0422353A2/fr
Publication of EP0422353A3 publication Critical patent/EP0422353A3/de
Application granted granted Critical
Publication of EP0422353B1 publication Critical patent/EP0422353B1/fr
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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0025—Supports; Baskets; Containers; Covers
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/0016—Chamber type furnaces
    • F27B17/0033—Chamber type furnaces the floor of the furnaces consisting of the support carrying the charge, e.g. car type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/12—Travelling or movable supports or containers for the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F27D5/005—Supports specially adapted for holding elongated articles in an upright position, e.g. sparking plugs

Definitions

  • the invention relates to a furnace for the partial heat treatment of tools having a clamping area and a working area, in particular drills, with a heating chamber which receives the batches for the tools and has a door in which heating elements which emit heat radiation for curing under vacuum conditions are arranged, with an evacuation device , with a quenching device and with a charging frame for receiving the tools to be treated, the clamping area not to be heated being arranged inside and the working area to be heated being arranged outside the charging frame.
  • Furnaces for the partial heat treatment of tools for example of twist drill blanks made of high-speed steel, are known.
  • Such twist drills should be fully hardened in the cutting area, while on the other hand they should remain soft in the shank area, ie on the clamping side.
  • One requirement is that the transition from one area to the other should be as small as possible. This is achieved by austenitizing the cutting area at temperatures between 1140 and 1300 ° C and then quenching it, depending on the HSS grade, while the shaft area must not be warmer than 850 ° C.
  • a known furnace for partial heat treatment provides for curing in a vacuum.
  • the tools for example in the form of the spiral drill blanks, are inserted into a massive receptacle, which is usually made of steel, with a high heat storage capacity and are placed in a vacuum oven. This is followed by evacuation and heating of the furnace with the batch inside.
  • the parts of the workpieces protruding from the holder, namely the cutting part of the drill, are heated to the austenitizing temperature by the heat radiation emitted by the heating elements, while the part located in the charging plate, namely the shaft of the drill bit blank, is shielded from the heat radiation.
  • the large mass of the receiving device for the tools prevents them from heating up to temperatures above 850 ° C.
  • a disadvantage of such a furnace for the partial heat treatment of workpieces is the very long heating and cooling time, which causes an extensive transition zone from the hard to the soft area.
  • all furnace parts located in the heating chamber namely the heating, heating connection, insulation, batch pick-up, must be warmed up and cooled again in the subsequent quenching process.
  • such a furnace can only achieve low productivity, i.e. the number of pieces per hour is low in relation to the operating and plant costs, which results in high unit costs.
  • the object of the invention is an efficient furnace for partial heat treatment to create tools in a vacuum, in particular the transition zone from the hard to the soft area should be small.
  • the furnace has a first area in which the heating chamber which is always at the working temperature is arranged, that the furnace further has a second area for loading and unloading and for quenching, and that between these two A transport device for the batches is arranged in areas.
  • the short time required for the heat transfer ensures that the amount of heat dissipated in the case of twist drill blanks by heat conduction along the drill axis in the shielded section of the workpiece, namely in the shank of the drill, is very small and therefore this section is cold and in the original state, i.e. soft remains.
  • the furnace is a single-chamber vacuum furnace. This then has two places, namely a cold place for the one area on which the batch stands during evacuation and quenching and which is also used for loading and unloading, and a warm place for the other area with the heating chamber.
  • a multi-chamber vacuum furnace can also be provided as the furnace for the partial heat treatment, the two regions being provided in one chamber each and the chambers being separated from one another by vacuum-tight and thermally insulating intermediate doors. The two areas for the partial heat treatment are thus formed by independent chambers.
  • this is preferably a three-chamber vacuum furnace in which a prechamber, a heating chamber and a quenching chamber are arranged one after the other, each of the chambers being assigned an evacuation device.
  • the three chambers are also separated from each other by thermal and vacuum-tight intermediate doors.
  • the prechamber serves exclusively as an evacuable rinsing chamber, in that this prechamber is evacuated to the same working pressure as it prevails in the heating chamber before the batch is transported into the subsequent heating chamber.
  • the heating chamber remains constantly under vacuum in the warm state, so that the materials for insulation and heating need not be resistant to oxidation at high temperatures. Graphite material or molybdenum is therefore mainly used in the heating chamber.
  • the quenching chamber contains, for example, a blower and a heat exchanger for recooling the gas, these two Components can also be designed as an external unit. There is also a transport system in the quenching chamber that is the same as that in the antechamber.
  • the heating chamber its housing has high-temperature-resistant and, if it is not constantly under vacuum at the high temperatures, oxidation-resistant insulation, on the inside of which also high-temperature-resistant and possibly oxidation-resistant, heat-storing plates with high heat emission behavior are arranged.
  • oxidation-resistant insulation on the inside of which also high-temperature-resistant and possibly oxidation-resistant, heat-storing plates with high heat emission behavior are arranged.
  • Optimal heat behavior is ensured by such a heating chamber.
  • the insulation which consists, for example, of aluminum oxide fibers, provides thermal insulation of the heating chamber from the outside
  • the heat-storing plates which can be silicon carbide plates, for example, provide the necessary immediate heat radiation when the batch is in the housing of the heating chamber has been transported.
  • the insulation and the heat-storing plates only need to be made of an oxidation-resistant material if they come into contact with air.
  • the heating elements can be arranged on the ceiling or on the ceiling and on the side and also consist of high-temperature-resistant and possibly oxidation-resistant and also vacuum-resistant heating conductor material, for example Kanthal.
  • this has a lowerable bottom hatch made of insulation material and the charging frame consists of an insulating plate on which a Radiation screen is arranged, wherein the charging frame can be moved under the heating chamber by means of the transport device and thereby replaces the lowered floor hatch in its working position.
  • the lowerable floor hatch preferably consists of the same insulation material as the housing of the heating chamber. However, it is equipped without a heat-storing plate, since in the lowered state the floor hatch would otherwise give off heat radiation without any useful value, since the floor hatch is then outside the heating chamber and has been replaced by the charging frame.
  • the insulating plate of the floor hatch can consist, for example, of ceramic fibers.
  • the heating chamber has an insulated door for moving the batch in and out, which, in contrast to the lowerable floor hatch, can be provided with heat-storing plates on the inside.
  • the radiation shield arranged on the insulating plate of the charging frame reduces heat transfer to the charging frame by reflection.
  • the charging frame is additionally provided with a lifting and lowering device, so that the charging frame, after it has been positioned below the heating chamber, can be pressed against the housing of the heating chamber, thus avoiding radiant heat flowing through gaps into the cold furnace chamber.
  • the insulating plate with its radiation shield is arranged on a base plate, which improves the overall stability of the charging frame.
  • the radiation shield and the insulating plate and, if necessary, the reason plate with through bores for receiving the tools and below it a base plate is arranged at a distance, this distance being adjustable with an adjusting device. This creates a possibility to vary the "immersion depth" of the workpiece according to the needs.
  • the base plate for the height adjustment has a radiation shield on its outside. This reduces the heat transfer from the underlying warm floor hatch to the floor slab.
  • heat exchanger elements are arranged in the cold region of the furnace. These serve to re-cool the gases.
  • FIGS. 6 to 9 show a second embodiment in the form of a three-chamber vacuum furnace 2.
  • the single-chamber vacuum furnace 1 of the first embodiment consists of a furnace housing 3, which defines a furnace chamber 4. This forms two places, namely a cold place (on the left in FIG. 1) and a warm place (on the right in FIG. 1), a heating chamber 5 being arranged in the warm place, in which the partial heat treatment is carried out.
  • the two places are connected by a roller table 6, which defines a transport device and which in the area of the warm plat zes with the heating chamber 5 can be raised and lowered by means of an eccentric drive 7. This is indicated by the double arrow D in Fig. 1.
  • Two cross-flow fans 8 are arranged between the two places.
  • the cold area of the single-chamber vacuum furnace 1 has lateral heat exchanger elements 9.
  • a buffer container 10 and an evacuation device 11 can also be seen in FIG. 3.
  • the heating chamber 5 has a housing with an insulation 12, which consists of a high-temperature and oxidation-resistant insulating material, for example aluminum oxide fibers. High-temperature and oxidation-resistant and heat-storing plates 13 made of a material with high heat emission behavior, for example silicon carbide plates, are likewise arranged on the inside of the insulation 12.
  • the heating chamber 5 has a door 14 facing the cold place of the single-chamber vacuum furnace 1, which door can either be folded up or moved to the side and also has insulation 12 and heat-storing plates 13 like the rest of the heating chamber 5.
  • the bottom of the heating chamber 5 is formed by a bottom hatch 15, which is made of the same insulation material as the insulation 12, but which has no heat-storing plates 13 like the rest of the heating chamber 5. By means of a lifting and lowering direction 16, this floor hatch 15 can be lowered below the roller table 6, as can be seen in dashed lines in FIG. 4 on the right side.
  • heating elements 17 on the ceiling and on the side, which are made of high-temperature-resistant, oxidation-resistant and vacuum-proof heating conductor material, for example Kanthal.
  • This charging frame 19 initially consists of a rectangular transport frame 20.
  • a base plate 21, for example made of steel, is mounted on this.
  • the base plate 21 receives an insulating plate 22, for example an aluminum oxide fiber plate, which is intended to reduce the heat transfer to the base plate 21.
  • a radiation shield 23 is applied to the insulating plate 22, for example in the form of a polished sheet or a film with a low heat emission value, i.e. high reflection.
  • NiCr material can be used as the material.
  • the composite formed in this way from base plate 21, insulating plate 22 and radiation shield 23 has bores 24 for receiving tools 18 in the form of spiral drill blanks.
  • a base plate 25 is arranged at a distance below the composite, which base plate is provided with a radiation shield 26 on its underside.
  • the base plate 25 with its radiation shield 26, which can also be made of the same material as the radiation shield 23, is height-adjustable via threaded bolts 27, which are fastened in the base plate 21 and which define an adjusting device 28, in such a way that the immersion depth of the tools 18 can be varied.
  • the single-chamber vacuum furnace 1 works as follows:
  • the batch 30 is given to the cold place of the single-chamber vacuum oven 1 by the transport frame 20 of the charging frame 19, which has guide strips with machined underside on the long sides and is made of cast iron, for example, on the roller table 6 comes into circulation, as can be seen for example in FIG. 2.
  • the heating chamber 5 is already at the prescribed working temperature, the bottom hatch 15 being closed, as shown in FIG. 3 by means of the solid lines. On the right side of this Fig. 3, the heating chamber 5 is also shown without charge 30.
  • the oven chamber 4 After closing the oven door 29, the oven chamber 4 is evacuated and then the charging frame 19 on the roller table 6 by means of a push-pull chain unit 31 by latching into the heating chamber 5, after the door 14 has been opened and the floor hatch 15 by means of the lifting and Lowering device 16 has been lowered.
  • the charging frame 19 After the charging frame 19 has reached its position within the heating chamber 5, the door 14 is closed and by means of the eccentric drive 7 the roller table 6 is moved upwards in such a way that the charging frame 19 closes the heating chamber 5 at the bottom and thereby replaces the floor hatch 15. The heat treatment can then take place in this state, which occurs immediately since the heating chamber 5 is already at the working temperature.
  • the door 14 is opened and the roller table 6 is moved down again and the charging frame 19 is moved out again by means of the push-pull chain unit 31. Immediately afterwards, the door 14 is closed again and the floor hatch 15 is raised so that the heating chamber 5 is closed on all sides and no heat escapes.
  • the cross-flow fans 8 By actuating the cross-flow fans 8, the batch 30 is then quenched in the left region of the furnace chamber 4. After the quenching has taken place and after the furnace housing 3 has been flooded, the batch 30 can then be removed after the furnace door 29 has been opened.
  • the three-chamber vacuum furnace 2 of the second embodiment shown in FIGS. 6 to 9 consists of three chambers, namely a prechamber 32, a heating chamber 33 arranged downstream of this, and finally a quenching chamber 34 is arranged downstream.
  • These three chambers 32, 33, 34 are each separated from one another by vacuum-tight and thermally insulating intermediate doors 35, with each of the chambers 32, 33, 34 also being assigned an evacuation device.
  • the pre-chamber 32 has an oven door 36.
  • a telescopic loading system 37 is arranged in it.
  • the heating chamber 33 is formed in accordance with that of the first embodiment with the single-chamber vacuum furnace 1. Deviating from this, however, the materials for insulation and heating do not need to be resistant to oxidation at high temperatures, since the heating chamber 33 remains constantly under vacuum in the warm state. Graphite material or molybdenum is therefore mainly used here.
  • the transport into the heating chamber 33 takes place by means of the telescopic loading system 37, i.e. via a combined lifting and moving device, which is installed in a frame that can be raised and lowered.
  • the heating chamber 33 in this embodiment still has a second door 14 'to the quenching chamber 34 located behind it.
  • the quenching chamber 34 also has a telescopic loading system 37 'and, above all, a cooling fan 38 and lateral heat exchanger elements 9. In order to be able to remove the batches 30 from the quenching chamber 34, this still has an oven door 36'.
  • the three-chamber vacuum furnace 2 works as follows:
  • the batch 30 to be treated is fed to the pre-chamber 32 by the charging rack 19 being introduced accordingly.
  • This charging frame shown in Fig. 9 differs from that of the first embodiment only in that no transport frame 20 is provided due to the telescopic loading system 37, 37 'used here. Otherwise the structure is identical.
  • the oven door 36 is closed in a vacuum-tight manner.
  • the intermediate doors 35 between the chambers 32, 33, 34 are also closed, so that there is a vacuum in particular in the central heating chamber 33 and is above all at working temperature.
  • the prechamber 32 is then evacuated to the working pressure of the heating chamber 33.
  • the intermediate vacuum-tight and thermal intermediate door 35 is opened and the bottom hatch 15 of the heating chamber 33 moves down.
  • the charging rack 19 is now transported into the heating chamber 33 by means of the telescopic loading system 37 after the left door 14 of the heating chamber 5 has been opened. After the charging frame 19 has reached its final place, the door 14 and the intermediate door 35 are closed again. After the charging frame 19 has assumed the position of the bottom hatch 15 of the heating chamber 33 and this has been hermetically sealed, the tools 18 which protrude from the charging frame 19 are now heated.
  • the right door 14 'of the heating chamber 5 and the vacuum-tight and thermal intermediate door 35 to the quenching chamber 34 are opened.
  • the telescopic loading system 37 'of the quenching chamber 34 the batch 30 is transported into the quenching chamber 34.
  • Both the door 14 'of the heater Chamber and the intermediate door 35 close again and the bottom hatch 15 of the heating chamber 5 moves upwards.
  • the quenching chamber is now filled with gas, the pressure being adjustable and overpressure possible, the cooling fan 38 is switched on and cools the batch 30, for example to temperatures of less than 150 ° C.
  • the furnace door 36 of the quenching chamber 34 is then opened and the charge 30 is then removed from the quenching chamber 34 by an external transport system.
  • the heating chamber 33 remains under vacuum and above all at the working temperature, so that rapid heat transfer to the tools 18 to be treated is possible.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Heat Treatment Of Articles (AREA)
  • Furnace Details (AREA)
EP90115231A 1989-10-12 1990-08-08 Four pour le traitement thermique partiel d'outils Expired - Lifetime EP0422353B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934103 1989-10-12
DE3934103A DE3934103A1 (de) 1989-10-12 1989-10-12 Ofen zur partiellen waermebehandlung von werkzeugen

Publications (3)

Publication Number Publication Date
EP0422353A2 true EP0422353A2 (fr) 1991-04-17
EP0422353A3 EP0422353A3 (en) 1991-07-17
EP0422353B1 EP0422353B1 (fr) 1994-10-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115231A Expired - Lifetime EP0422353B1 (fr) 1989-10-12 1990-08-08 Four pour le traitement thermique partiel d'outils

Country Status (5)

Country Link
US (1) US5052923A (fr)
EP (1) EP0422353B1 (fr)
AT (1) ATE112807T1 (fr)
DE (2) DE3934103A1 (fr)
ES (1) ES2064560T3 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536108A1 (fr) * 1991-10-02 1993-04-07 Aichelin Industrieofenbau Ges.m.b.H. Four pour le traitement thermique partiel d'outils
EP0609492A1 (fr) * 1993-01-30 1994-08-10 Ipsen Industries International Gesellschaft Mit Beschränkter Haftung Support pour le traitement thermique partiel d'articles
EP0615106A2 (fr) * 1993-02-26 1994-09-14 ABAR IPSEN INDUSTRIES, Inc. Four électrique de traitement thermique
WO2002010465A1 (fr) * 2000-07-28 2002-02-07 Sandvik Ab Procede et dispositif de traitement thermique d"outils de coupe
WO2005090616A1 (fr) 2004-03-18 2005-09-29 Ishikawajima-Harima Heavy Industries Co. Ltd. Four de traitement thermique a double enceinte
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
WO2007118489A1 (fr) * 2006-04-13 2007-10-25 Airbus Deutschland Gmbh Procédé de traitement thermique d'un profilé, dispositif de traitement thermique d'un profilé et profilé
FR2917752A1 (fr) * 2007-06-22 2008-12-26 Montupet Sa 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
US7625204B2 (en) 2003-06-27 2009-12-01 Ihi Corporation Gas cooling type vacuum heat treating furnace and cooling gas direction switching device therefor
WO2010012270A1 (fr) * 2008-07-31 2010-02-04 Ipsen International Gmbh Procédé d'exploitation et dispositif pour un four industriel tel qu'un four à vide à chambres multiples, en particulier un four à vide à deux chambres pour le traitement thermique de charges de pièces métalliques
WO2011029565A1 (fr) * 2009-09-10 2011-03-17 Ald Vacuum Technologies Gmbh Procédé et dispositif de durcissement de pièces d'usinage ainsi que pièces d'usinage durcies obtenues par ce procédé
US9303303B2 (en) 2007-06-22 2016-04-05 Montupet S.A. Process for the heat treatment of cylinder heads made of an aluminium-based alloy, and cylinder heads having improved fatigue resistance properties
US10196730B2 (en) 2009-09-10 2019-02-05 Ald Vacuum Technologies Gmbh Method and device for hardening workpieces, and workpieces hardened according to the method

Families Citing this family (27)

* Cited by examiner, † Cited by third party
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JPH06174377A (ja) * 1992-12-04 1994-06-24 Komatsu Ltd 多目的雰囲気熱処理装置
US5567381A (en) * 1995-03-20 1996-10-22 Abar Ipsen Industries, Inc. Hybrid heat treating furnace
FR2771754B1 (fr) * 1997-12-02 2000-02-11 Etudes Const Mecaniques Installation de traitement thermique sous vide modulaire
FR2779218B1 (fr) * 1998-05-29 2000-08-11 Etudes Const Mecaniques Cellule de trempe sous gaz
US6217317B1 (en) * 1998-12-15 2001-04-17 Consolidated Engineering Company, Inc. Combination conduction/convection furnace
US6336809B1 (en) 1998-12-15 2002-01-08 Consolidated Engineering Company, Inc. Combination conduction/convection furnace
US7275582B2 (en) * 1999-07-29 2007-10-02 Consolidated Engineering Company, Inc. Methods and apparatus for heat treatment and sand removal for castings
DE19953654A1 (de) * 1999-11-08 2001-05-23 Pink Gmbh Vakuumtechnik Verfahren und Vorrichtung zur Herstellung einer Lotverbindung
US6622775B2 (en) 2000-05-10 2003-09-23 Consolidated Engineering Company, Inc. Method and apparatus for assisting removal of sand moldings from castings
EP1293741B1 (fr) * 2000-05-30 2008-11-12 Matsushita Electric Industrial Co., Ltd. Dispositif de traitement thermique
WO2002005986A2 (fr) 2000-07-17 2002-01-24 Consolidated Engineering Company, Inc. Procedes et appareil permettant l'utilisation de coquilles dans les moulages
DE50112495D1 (de) 2001-01-26 2007-06-21 Ipsen Int Gmbh Vorrichtung und Verfahren zum Transportieren metallischer Werkstücke sowie Anlage zur Wärmebehandlung dieser Werkstücke
US6902635B2 (en) 2001-12-26 2005-06-07 Nitrex Metal Inc. Multi-cell thermal processing unit
ATE547194T1 (de) 2002-07-11 2012-03-15 Cons Eng Co Inc Verfahren zur entfernung der sanformen von gussstücken
DE20305423U1 (de) * 2003-04-04 2004-08-12 Ipsen International Gmbh Vorrichtung zum Transportieren metallischer Werkstücke
US6991449B1 (en) 2003-04-11 2006-01-31 Northrop Grumman Corporation Heating apparatus for in-situ de-bulking composite parts during layup
DE102004040596A1 (de) * 2004-08-21 2006-02-23 Robert Bosch Gmbh Elektrische Vorrichtung mit einem Gehäuse und einem Kühlkörper
US20060103059A1 (en) 2004-10-29 2006-05-18 Crafton Scott P High pressure heat treatment system
DE102005015880B4 (de) * 2005-04-06 2010-07-22 Airbus Deutschland Gmbh Strangpressprofil für Luftfahrzeuge und Vorrichtung zur differentiellen Wärmebehandlung eines solchen Profils
JP4741307B2 (ja) * 2005-05-20 2011-08-03 富士フイルム株式会社 加熱装置及び加熱方法
CN100375790C (zh) * 2006-05-08 2008-03-19 杭州金舟电炉有限公司 一种油帘膜不停炉清理装置
US7905161B2 (en) * 2007-06-20 2011-03-15 Longyear Tm, Inc. Process of drill bit manufacture
JP6596703B2 (ja) * 2015-03-04 2019-10-30 株式会社Ｉｈｉ 多室型熱処理装置
JP6338314B2 (ja) 2015-05-26 2018-06-06 株式会社Ihi 熱処理装置
CN105392301B (zh) * 2015-12-29 2018-06-01 南京理工大学 一种高热效率的pcba封装机
JP6261632B2 (ja) * 2016-02-22 2018-01-17 中外炉工業株式会社 熱処理設備
FR3102547B1 (fr) * 2019-10-24 2022-06-17 Ecm Tech Cellule de trempe sous gaz

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1533954A1 (de) * 1966-04-21 1970-02-12 Alco Standard Corp Warmbehandlungsofen
US3615927A (en) * 1967-10-16 1971-10-26 Hayes Inc C I Method for heat treating metallic articles
DE2113287A1 (de) * 1971-03-19 1972-09-21 Hayes Inc C I Vakuumofen zur Waermebehandlung von metallischen Gegenstaenden
FR2487491A1 (fr) * 1980-07-25 1982-01-29 Bmi Four a passage sous vide pour le traitement thermique ou thermochimique en continu de metaux
DE3150448A1 (de) * 1981-12-19 1983-06-30 Günter 5880 Lüdenscheid Pfaffenhöfer Dreikammer-vakuumofen

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447788A (en) * 1967-07-10 1969-06-03 Alco Standard Corp Heat treating method and apparatus
DE2128158B2 (de) * 1971-06-07 1972-05-25 Ipsen Industries International Gmbh, 4190 Kleve Chargiervorrichtung zum be- und entladen der heizkammer eines vakuum-abschreckofens
SU382712A1 (ru) * 1971-10-27 1973-05-25 Вакуумная электропечь
US3718324A (en) * 1971-11-12 1973-02-27 Hayes Inc C I Vacuum furnace and work cart for use therein
SU588248A1 (ru) * 1976-02-18 1978-01-15 Куйбышевское Производственное Объединение Завода Им.Масленникова Универсальна электропечь
FR2426877A1 (fr) * 1978-05-23 1979-12-21 Physique Appliquee Ind Perfectionnements apportes aux fours a vide a dispositif incorpore de trempe en lit fluidise
JPS6047505B2 (ja) * 1980-12-23 1985-10-22 日本酸素株式会社 連続真空加熱炉
JPS57137417A (en) * 1981-02-17 1982-08-25 Michio Sugiyama Semicontinuous vacuum heat treatment furnace and operating method
JPS5893230A (ja) * 1981-11-30 1983-06-02 Toshiba Corp 超高真空処理装置
US4462577A (en) * 1982-12-16 1984-07-31 C.I. Hayes Inc. Apparatus for gas cooling work parts under high pressure in a continuous heat treating vacuum furnace
DE3313651A1 (de) * 1983-04-15 1984-10-18 Degussa Ag, 6000 Frankfurt Ofen zur partiellen waermebehandlung von werkzeugen
JPS609801A (ja) * 1983-06-27 1985-01-18 Chugai Ro Kogyo Kaisha Ltd 真空焼結炉
DE3405244C1 (de) * 1984-02-15 1985-04-11 Aichelin GmbH, 7015 Korntal-Münchingen Industrieofen,insbesondere Mehrkammer-Vakuumofen zur Waermebehandlung von Chargen metallischer Werkstuecke
DE3726134A1 (de) * 1987-08-06 1989-02-23 Degussa Halterung zur partiellen waermebehandlung von werkzeugen in oefen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1533954A1 (de) * 1966-04-21 1970-02-12 Alco Standard Corp Warmbehandlungsofen
US3615927A (en) * 1967-10-16 1971-10-26 Hayes Inc C I Method for heat treating metallic articles
DE2113287A1 (de) * 1971-03-19 1972-09-21 Hayes Inc C I Vakuumofen zur Waermebehandlung von metallischen Gegenstaenden
FR2487491A1 (fr) * 1980-07-25 1982-01-29 Bmi Four a passage sous vide pour le traitement thermique ou thermochimique en continu de metaux
DE3150448A1 (de) * 1981-12-19 1983-06-30 Günter 5880 Lüdenscheid Pfaffenhöfer Dreikammer-vakuumofen

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536108A1 (fr) * 1991-10-02 1993-04-07 Aichelin Industrieofenbau Ges.m.b.H. Four pour le traitement thermique partiel d'outils
EP0609492A1 (fr) * 1993-01-30 1994-08-10 Ipsen Industries International Gesellschaft Mit Beschränkter Haftung Support pour le traitement thermique partiel d'articles
US5417567A (en) * 1993-01-30 1995-05-23 Ipsen Industries International Gesellschaft Mit Beschrankter Haftung Holder means for the partial thermal treatment of workpieces
EP0615106A2 (fr) * 1993-02-26 1994-09-14 ABAR IPSEN INDUSTRIES, Inc. Four électrique de traitement thermique
EP0615106A3 (fr) * 1993-02-26 1997-08-27 Ipsen Abar Ind Four électrique de traitement thermique.
WO2002010465A1 (fr) * 2000-07-28 2002-02-07 Sandvik Ab Procede et dispositif de traitement thermique d"outils de coupe
US6632302B2 (en) 2000-07-28 2003-10-14 Geoffrey Philip Fisher Method and means for heat treating cutting tools
AU2001272673B2 (en) * 2000-07-28 2004-12-23 Sandvik Intellectual Property Ab Method and means for heat treating cutting tools
US7625204B2 (en) 2003-06-27 2009-12-01 Ihi Corporation Gas cooling type vacuum heat treating furnace and cooling gas direction switching device therefor
EP1726665A4 (fr) * 2004-03-18 2008-08-13 Ihi Corp Four de traitement thermique a double enceinte
US7771193B2 (en) 2004-03-18 2010-08-10 Ihi Corporation Double-chamber type heat-treating furnace
EP1726665A1 (fr) * 2004-03-18 2006-11-29 Ishikawajima-Harima Heavy Industries Co., Ltd. Four de traitement thermique a double enceinte
WO2005090616A1 (fr) 2004-03-18 2005-09-29 Ishikawajima-Harima Heavy Industries Co. Ltd. Four de traitement thermique a double enceinte
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
WO2007118489A1 (fr) * 2006-04-13 2007-10-25 Airbus Deutschland Gmbh Procédé de traitement thermique d'un profilé, dispositif de traitement thermique d'un profilé et profilé
US8101120B2 (en) 2006-04-13 2012-01-24 Airbus Deutschland Gmbh Method for the heat treatment of a profile, device for the heat treatment of a profile and profile
FR2917752A1 (fr) * 2007-06-22 2008-12-26 Montupet Sa 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
US8580052B2 (en) 2007-06-22 2013-11-12 Montupet S.A. Method for the heat treatment of castings using an air quench and system for implementing the method
US9303303B2 (en) 2007-06-22 2016-04-05 Montupet S.A. Process for the heat treatment of cylinder heads made of an aluminium-based alloy, and cylinder heads having improved fatigue resistance properties
WO2009000751A1 (fr) * 2007-06-22 2008-12-31 Montupet S.A. 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
WO2010012270A1 (fr) * 2008-07-31 2010-02-04 Ipsen International Gmbh Procédé d'exploitation et dispositif pour un four industriel tel qu'un four à vide à chambres multiples, en particulier un four à vide à deux chambres pour le traitement thermique de charges de pièces métalliques
WO2011029565A1 (fr) * 2009-09-10 2011-03-17 Ald Vacuum Technologies Gmbh Procédé et dispositif de durcissement de pièces d'usinage ainsi que pièces d'usinage durcies obtenues par ce procédé
US9518318B2 (en) 2009-09-10 2016-12-13 Ald Vacuum Technologies Gmbh Method and device for hardening work pieces and workpieces hardened according to said method
US10196730B2 (en) 2009-09-10 2019-02-05 Ald Vacuum Technologies Gmbh Method and device for hardening workpieces, and workpieces hardened according to the method

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Publication number Publication date
DE3934103A1 (de) 1991-04-25
EP0422353B1 (fr) 1994-10-12
ATE112807T1 (de) 1994-10-15
DE59007443D1 (de) 1994-11-17
EP0422353A3 (en) 1991-07-17
US5052923A (en) 1991-10-01
ES2064560T3 (es) 1995-02-01

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