EP0785402A1 - Wärmebehandlungsanalage für eine Ladung aus metallischen Stücken - Google Patents

Wärmebehandlungsanalage für eine Ladung aus metallischen Stücken Download PDF

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Publication number
EP0785402A1
EP0785402A1 EP96810035A EP96810035A EP0785402A1 EP 0785402 A1 EP0785402 A1 EP 0785402A1 EP 96810035 A EP96810035 A EP 96810035A EP 96810035 A EP96810035 A EP 96810035A EP 0785402 A1 EP0785402 A1 EP 0785402A1
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EP
European Patent Office
Prior art keywords
elements
oven
load
assembly
manipulator
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
EP96810035A
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English (en)
French (fr)
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EP0785402B1 (de
Inventor
Pierre Beuret
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Individual
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Individual
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Publication date
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Priority to DE69612655T priority Critical patent/DE69612655T2/de
Priority to EP96810035A priority patent/EP0785402B1/de
Priority to AT96810035T priority patent/ATE200927T1/de
Publication of EP0785402A1 publication Critical patent/EP0785402A1/de
Application granted granted Critical
Publication of EP0785402B1 publication Critical patent/EP0785402B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • F27D3/0024—Charging; Discharging; Manipulation of charge of metallic workpieces
    • 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
    • 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
    • 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
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge

Definitions

  • the need for different branches of industry to use more and more parts produced in series is increasing and also the use of different heat treatments as well as alloys or other special materials forming said parts.
  • the need has therefore increased to use installations allowing various heat treatments to be carried out and comprising several elements, such as ovens or quenching tanks, while allowing easy access so as to be able, on the one hand, to arrange the facilities in a rational way and, on the other hand, allow the automation of treatment processes.
  • an object of the present invention is to provide an installation even more flexible than that indicated in the first place, while maintaining the superior quality made possible with the second installation mentioned above. This object is achieved by the installation described in the independent claim.
  • Figures 1 and 2 schematically show a relatively complex installation to be able to demonstrate different applications and possibilities for handling various loads in heat treatment. It is understood and will emerge from this description that Figures 1 and 2 show only some of the many possibilities of an installation according to the invention and that the user is able to modify this installation to a large extent for the adapt to their needs. In other words, thanks to the installation according to the invention, the user can, from a very wide range of combinations and possibilities, choose and define the optimal installation that best meets said needs.
  • Figures 1 and 2 show, in analogy to an installation according to European patent no. 296 102, a first assembly 1 on the upper line comprising a group of ovens 2-7 and at one end a washing station 9.
  • This installation was initially planned with a symmetrical arrangement with respect to the oven 5, but for For reasons of presentation, the second oven similar to oven 2 and the second washing station similar to station 9 have not been shown.
  • the furnace 2 is an income furnace described in more detail with the aid of FIG. 5, this furnace being vertically movable by means of a bracket and a mechanical drive. .
  • the austenitization, carburizing or carbonitriding furnaces are described in more detail in Figure 3.
  • Ovens 3 and 7 are the same as ovens 4, 5 or 6 with the difference that low temperature heating is integrated in their heating chamber.
  • the washing machine 9 is explained in more detail in FIGS. 6 and 8. All the elements of the first set, except for the vertically movable oven, can move laterally with respect to the longitudinal axis of the two sets, as is see in Figure 2.
  • the second assembly 11, see FIG. 3, is arranged on the lower line and comprises, in this exemplary embodiment, three treatment stations, 12, 13 and 14.
  • the station 12 is an oil cooling tank
  • the station 13 is a salt cooling tank
  • the station 14 is a water cooling tank.
  • the processing stations 12, 13 and 14 are arranged on a horizontal track 15 constituted by two rails, in a similar manner to that which is described in European patent no. 296 102.
  • the treatment tanks, here cooling, are freely movable on this horizontal way to be able to come next to any oven.
  • the tanks are arranged in such a way that the path traveled by these tanks is minimum. This means that, in a specific installation designed for one or more specific work sequences, it is not necessary for each tank to come opposite each oven but of course only opposite the planned oven (s) ( s) for the treatments envisaged.
  • the loads are loaded and unloaded using a manipulator 17 mounted on a longitudinal track 16 consisting of two rails whose plane is perpendicular to that formed by the tracks 15.
  • This manipulator to which we will return in more detail to l 'support of Figures 3 and 7, can move along the installation to load or unload any element of the first set, after having taken the load to be treated on the storage stations before treatment 18 to deposit it, after the desired treatment, on the treatment stations storage after treatment 19. This is indicated symbolically by the arrows M.
  • FIG 3 shows a section along line III-III of Figure 2 with, in the upper line, the oven 5 and, in the lower line, the tray 13 of the assembly 11 and the manipulator 17.
  • the oven 5 is similar oven disclosed and described in detail in European patent application no. 533 615, to which explicit reference is made.
  • the furnace 5 is a bell furnace 20 having in its base an opening 21 limited by a belt 22. Heating bodies 23, a turbine 24 and a double jacket 25 ensure the homogeneity of the speeds of the treatment gases in the feed 40 by forced circulation inside and around the bell 20.
  • the oven 5 is movable from left to right and from right to left in the plane of the drawing in FIG. 3, the position of the oven on the right, above the tank 13, being indicated in dotted lines.
  • the oven stroke is indicated by the arrow CF.
  • rollers 26 which roll on a lateral raceway 27D, and is driven by a rack-and-pinion reduction motor 10.
  • the oven 5 is closed by means of a plug 28 which is supported by the plate 29 of an elevator 30, guided by a bracket 31 and driven by a reduction motor 32 and rack 32A.
  • the motor control makes it possible to hermetically close the oven 5. This arrangement allows a rapid rise in temperature of the load and has the advantage of ensuring a heat treatment of high precision where the temperature dispersion across the entire load is reduced.
  • This oven 5 as well as the ovens 4 and 6 allow various treatments such as austenitization, case hardening, accelerated case hardening, carbonitriding, nitriding, annealing and tempering.
  • This quenching tank 13 is a tank known per se and is rectangular in plan, closed by a cover 33 and containing an elevator 34 consisting of a bracket 35, a support arm 36 and a tray or grid handling 37 (see also Fig. 2).
  • the bracket is equipped with a reduction motor and a rack 38.
  • the cover 33 of the tank is displaceable by means of a displacement mechanism 68 comprising a piston acting on a shaped part, see FIG. 2.
  • a fluid guide ring 39 delimits a channel which allows a homogeneous flow of the coolant through the charge 40 by means of a circulating pump or a stirring pump 41.
  • the cover 33 is provided with an opening through which the plate 37 of the elevator 34 can pass.
  • the manipulator 17, designed to transport the load 40, is attached to the rear of the installation by moving on the loading track 16 comprising an upper support rail 42 and a lower rail 43 on which the rollers roll. 44 of the manipulator. It can therefore reach each element of set 1 of the line upper part of the installation as well as the stations 18, 19.
  • the manipulator comprises a box 45 enclosing an elevator 46 consisting of a bracket 47 equipped with a reducing electric motor and an eccentric 48 acting on a support arm 49.
  • a lateral transfer plate 50 driven by a reduction and rack motor 51 making it possible to move the load laterally.
  • the travel of this side plate is indicated by an arrow CM.
  • one end of this plate 50 is in the form of a semicircle, capable of receiving a base grid 52 of a load 40 made up of loose parts in stacked baskets. This arrangement makes it possible to use only one manipulator for charging and discharging from stations 18 to stations 9-2-3-4-5-6-7-8 and 19 (Fig. 2).
  • the manipulator makes it possible to deposit a load on the flat sliding surface 8 of the plug 28 placed on the plate 29 brought into the intermediate position.
  • This transfer operation being carried out, it is understood that the manipulator 17 can be evacuated and that the elevator 30 can be driven so as to charge the load 40 by descent and return and at the same time to close the oven by means of the plug 28.
  • the operation of transferring the charge after a heat treatment at high temperature and under controlled atmosphere is similar to that described in European patent application no. 533 615.
  • the elevator 30 of the oven is actuated so as to be placed in an intermediate position between the closed position of the oven visible in FIG. 3 and the lower loading position described above. In this intermediate position, the plug 28 is extracted from the hood of the oven and its flat upper surface 8 is flush with the upper plane of the cover 33 of the container 13.
  • the oven is then moved from left to right, and the base belt 22 of the oven pushes the base grid 52 on the sliding face 8 of the plug 28 and slides this grid until it reaches the cover 33
  • the movement of the oven continues until the grid 52 is on the upper face of the plate 37 of the elevator 34 of the tank which has been brought into a position where this upper surface is also flush with the surface. 33. It is therefore sufficient to maneuver the elevator 34 so as to lower the load in the tank, then to load a new load on the plug 28 by means of the manipulator 17 and to return the oven to its initial position and to close it by means of the elevator 30 and the plug 28.
  • the cooling tank 13 with the load after quenching and before draining is moved in front of a washing station, in this case the washing station not shown on the right of FIG. 2, for washing after soaking in the salt of tank 13
  • a washing station in this case the washing station not shown on the right of FIG. 2, for washing after soaking in the salt of tank 13
  • the quenched charge is extracted from the liquid by the elevator of the tank, then drained and then transferred to the washing station to be discharged by the manipulator 17 which will deposit the load on the storage stations after treatment 19.
  • the oven 5 of FIG. 3 is similar to the oven 4 and 6 while the oven 3 is shown diagrammatically in FIG. 4, this oven being similar to the oven 7.
  • the oven 3 ( or 7) differs from the oven 5 described above with the aid of FIG. 3 by a low temperature heating 53 integrated in the heating chamber 54. Since this oven is at low temperature, the walls 55 are slightly less thick as those of ovens 4, 5 or 6.
  • the other elements of the bell oven as well as the elevator 30 are the same, just like the motor 56 of the rack drive 57 of the oven 3 (7) on the side track 27B (27F).
  • FIG. 5 schematically shows another type of oven, namely a preheating oven 2.
  • This oven 2 is movable in height by means of a bracket 58 and a mechanical drive 59.
  • the plug 60 is fixed and when the oven is in the upper position, the load 40 can be deposited on the plug by the manipulator 17 and then the oven goes back down on the load and the heat treatment cycle starts.
  • the fixed plug is equipped with a gas circulation turbine 61.
  • the manipulator 17 is the same as described above. To unload the oven after the heat treatment, the oven is brought to its upper position and the load can be unloaded by the manipulator.
  • FIG. 6 shows the section on line VI-VI of Figure 2 with in addition the section (in dotted line) of the manipulator and one of the cooling tanks described above using Figure 3.
  • the washing machine 9 comprises two water tanks 66 with two independent water circuits 62 and 63, and above a sealed chamber 64 which can be moved upwards so that the load can be transferred either by means of the manipulator 17 or by means of carriage 65 moving along a track lateral 27A using a reduction motor 67 and rack.
  • This carriage also includes a semicircular plate 65A adapted to push a circular grid 52 supporting the load (Fig. 7).
  • the quenched load extracted from the liquid by the elevator 34 in the tank is drained.
  • the washing station is open in the high position, the handling carriage 65 pushes the load in question in the washing station.
  • the manipulator 17 picks up the load for a tempering cycle, possibly in station 2, or else to be deposited on the storage stations after treatment 19.
  • the oven being moved backwards, the load via the manipulator 17 is deposited on the plug 28 resting on the elevator 30 then immediately lowered to the low position and the oven returns to the working position.
  • the charge is introduced into the furnace for the heat treatment cycle via the elevator 30 of the furnace.
  • the cooling tank 12, 13 or 14, depending on the operator's choice is positioned in front of the furnace in question by moving on the horizontal track 15. A new load is waiting on the manipulator 17.
  • the oven is partially opened and then immediately moved by the reduction motor drive on one of the side tracks 27 C, D or E with the load at temperature and under a gaseous atmosphere on the elevator 34 from the tank and immediately immersed in the coolant where forced circulation of the coolant ensures good homogeneity of the quench.
  • the manipulator 17 deposits a new load 40 on the plug 60 of oven 2 which is moved to the high position. The oven then returns to the initial position and the new charge is introduced into the oven and a new heat treatment cycle is restarted.
  • the cooling tank with the load after quenching before dripping is moved in front of the washing station 9 or in front of the other washing station.
  • Station 9 is intended for washing after quenching in the oil tank and the other station is intended for washing after quenching in the salt tank.
  • the quenched charge is extracted from the liquid by the tank elevator and drained.
  • the washing station is open in the high position, the handling trolley 65, see FIGS. 6 and 8, pushes the load in question into the washing station.
  • the manipulator 17 picks up the washed load for a possible tempering cycle in the furnace 2 or the other similar furnace or else to be deposited on the storage stations after treatment 19.
  • this installation allows, on the one hand, very great flexibility with regard to the various treatments provided and offers the possibility of aligning furnaces with very diverse heat treatment, such as austenitization, carburizing, carbonutriation, nitrocarburization or oxynitriding on the one hand and preheating, annealing and tempering on the other hand, as well as cooling tanks of various types, such as oil, water, salt or gas tanks, as well as washing stations of different designs and this in a single installation allowing rational treatment, thanks to the concept of aligning the two sets, namely the ovens and washing stations on an upper line, and the other elements such as cooling on a lower line, to provide only one manipulator integral with the installation and capable of loading and unloading each oven and each washing station, and by providing ovens which can be moved on a side track, thus making it possible to avoid the costly operation of hanging the load on the oven for a more reliable and faster heat treatment.
  • Such an installation allows automation of certain manipulations only, desired by the user, that is to say partial automation

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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)
  • Catalysts (AREA)
  • Fertilizers (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Furnace Charging Or Discharging (AREA)
EP96810035A 1996-01-17 1996-01-17 Wärmebehandlungsanlage für eine Ladung aus metallischen Stücken Expired - Lifetime EP0785402B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69612655T DE69612655T2 (de) 1996-01-17 1996-01-17 Wärmebehandlungsanlage für eine Ladung aus metallischen Stücken
EP96810035A EP0785402B1 (de) 1996-01-17 1996-01-17 Wärmebehandlungsanlage für eine Ladung aus metallischen Stücken
AT96810035T ATE200927T1 (de) 1996-01-17 1996-01-17 Wärmebehandlungsanlage für eine ladung aus metallischen stücken

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96810035A EP0785402B1 (de) 1996-01-17 1996-01-17 Wärmebehandlungsanlage für eine Ladung aus metallischen Stücken

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EP0785402A1 true EP0785402A1 (de) 1997-07-23
EP0785402B1 EP0785402B1 (de) 2001-05-02

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995805A1 (de) * 1998-10-23 2000-04-26 Pierre Beuret Wärmebehandlungsanlage für eine Charge metallischer Werkstücke
EP1149923A1 (de) * 2000-04-27 2001-10-31 Kabushiki Kaisha Toshiba Vorrichtung zum Abschrecken metallischer Materialien
EP1193317A1 (de) * 2000-09-27 2002-04-03 Patherm SA Wärmebehandlungsanlage für Ladungen von metallischen Werkstücken
WO2004009855A1 (en) * 2002-07-18 2004-01-29 Consolidated Engineering Company, Inc. Method and system for processing castings
CN103436671A (zh) * 2013-08-05 2013-12-11 河北科技大学 一种双介质淬火热处理冷却专用设备及其工艺
US11644239B2 (en) 2018-02-13 2023-05-09 Ebner Industrieofenbau Gmbh Arrangement having plural temperature-control stations for heat treating component parts, and their handling

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014118637A1 (de) * 2014-12-15 2016-06-16 Jasta-Armaturen Gmbh & Co. Kg Vorwärmofen für einen Bolzenofen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR95877E (fr) * 1968-09-30 1971-11-12 Ugine Kuhlmann Procédé et appareil de traitement de produits métallurgiques en particulier en acier.
US3926415A (en) * 1974-01-23 1975-12-16 Park Ohio Industries Inc Method and apparatus for carbonizing and degassing workpieces
EP0023546A1 (de) * 1979-06-15 1981-02-11 Dr. Werner Herdieckerhoff, Nachfolger Industrieöfen - Apparatebau Verfahren und Vorrichtung zur Gefüge- und/oder Oberflächenveredelung von Metallen
EP0209408A1 (de) * 1985-06-25 1987-01-21 Stein Heurtey Vorrichtung für thermochemische Behandlungen bei verschiedenen Temperaturen und Atmosphäre, insbesondere für die Kraftfahrzeugindustrie
EP0296102A1 (de) * 1987-06-03 1988-12-21 Pierre Beuret Vorrichtung mit mehreren Einzelteilen für Wärmebehandlungen
EP0533615A1 (de) * 1991-09-19 1993-03-24 Codere Sa Wärmebehandlungsanlage für aufeinanderfolgende Chargen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR95877E (fr) * 1968-09-30 1971-11-12 Ugine Kuhlmann Procédé et appareil de traitement de produits métallurgiques en particulier en acier.
US3926415A (en) * 1974-01-23 1975-12-16 Park Ohio Industries Inc Method and apparatus for carbonizing and degassing workpieces
EP0023546A1 (de) * 1979-06-15 1981-02-11 Dr. Werner Herdieckerhoff, Nachfolger Industrieöfen - Apparatebau Verfahren und Vorrichtung zur Gefüge- und/oder Oberflächenveredelung von Metallen
EP0209408A1 (de) * 1985-06-25 1987-01-21 Stein Heurtey Vorrichtung für thermochemische Behandlungen bei verschiedenen Temperaturen und Atmosphäre, insbesondere für die Kraftfahrzeugindustrie
EP0296102A1 (de) * 1987-06-03 1988-12-21 Pierre Beuret Vorrichtung mit mehreren Einzelteilen für Wärmebehandlungen
EP0533615A1 (de) * 1991-09-19 1993-03-24 Codere Sa Wärmebehandlungsanlage für aufeinanderfolgende Chargen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995805A1 (de) * 1998-10-23 2000-04-26 Pierre Beuret Wärmebehandlungsanlage für eine Charge metallischer Werkstücke
EP1149923A1 (de) * 2000-04-27 2001-10-31 Kabushiki Kaisha Toshiba Vorrichtung zum Abschrecken metallischer Materialien
US6492631B2 (en) 2000-04-27 2002-12-10 Kabushiki Kaisha Toshiba Apparatus for quenching metallic material
EP1193317A1 (de) * 2000-09-27 2002-04-03 Patherm SA Wärmebehandlungsanlage für Ladungen von metallischen Werkstücken
WO2004009855A1 (en) * 2002-07-18 2004-01-29 Consolidated Engineering Company, Inc. Method and system for processing castings
CN103436671A (zh) * 2013-08-05 2013-12-11 河北科技大学 一种双介质淬火热处理冷却专用设备及其工艺
CN103436671B (zh) * 2013-08-05 2015-07-01 河北科技大学 一种双介质淬火热处理冷却专用设备及其工艺
US11644239B2 (en) 2018-02-13 2023-05-09 Ebner Industrieofenbau Gmbh Arrangement having plural temperature-control stations for heat treating component parts, and their handling

Also Published As

Publication number Publication date
DE69612655D1 (de) 2001-06-07
DE69612655T2 (de) 2001-08-09
ATE200927T1 (de) 2001-05-15
EP0785402B1 (de) 2001-05-02

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