EP0070347A1 - Wärmebehandlungsvorrichtung - Google Patents

Wärmebehandlungsvorrichtung Download PDF

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Publication number
EP0070347A1
EP0070347A1 EP81810293A EP81810293A EP0070347A1 EP 0070347 A1 EP0070347 A1 EP 0070347A1 EP 81810293 A EP81810293 A EP 81810293A EP 81810293 A EP81810293 A EP 81810293A EP 0070347 A1 EP0070347 A1 EP 0070347A1
Authority
EP
European Patent Office
Prior art keywords
load
tank
oven
cooling tank
cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP81810293A
Other languages
English (en)
French (fr)
Inventor
Pierre Beuret
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.)
Michel Sperisen Equipements Industriels
Original Assignee
Michel Sperisen Equipements Industriels
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 Michel Sperisen Equipements Industriels filed Critical Michel Sperisen Equipements Industriels
Priority to EP81810293A priority Critical patent/EP0070347A1/de
Publication of EP0070347A1 publication Critical patent/EP0070347A1/de
Withdrawn legal-status Critical Current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
    • C21D1/773—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
    • 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
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • C21D1/64—Quenching devices for bath quenching with circulating liquids

Definitions

  • the oven is lifted above the cooling tank and the elevator is brought to the high position, in which the loading platform emerges from the cooling tank.
  • the load to be treated is then deposited on this tray, then the oven lowered onto the cooling tank.
  • the loading plate is shaped so as to constitute a plug closing the inlet of the oven so as to be able to create a vacuum there.
  • the elevator is brought to the low position, so as to immerse the load in the cooling tank.
  • the oven is again lifted above the cooling tank and the elevator raised to the high position to remove the treated load from the installation, which is ready to receive a new one.
  • the invention aims to create a heat treatment installation as simple and space-saving as possible, but avoiding the drawbacks of known installations.
  • the partition with which the oven is provided in accordance with the characteristic of claim 1, the latter may only be open while the load passes.
  • the loads can be supported in the installation by a conventional grid giving free access to the underside of the load for a working atmosphere stirred in the heating chamber of the oven.
  • the coolant is oil and if the grid supporting the load is supported in the oven by the elevator during the heating phase, the quantity of oil adhering to the part of the latter which is located in the oven is negligible; it has, in fact, no face oriented so as to retain an appreciable quantity of oil.
  • the special embodiments defined by claim 2 are particularly advantageous in that they allow the loading and unloading of the installation without having to lift the oven above the cooling tank. Such an installation can therefore be mounted in a room just a little higher than the sum of the heights of the oven and the cooling tank.
  • Claim 3 defines a means as simple as it is clever to use part of the cooling tank alternately for the introduction of the charges, their quenching and their removal from the installation.
  • claims 4 to 6 they each define a particular embodiment, to which users may have good reasons to give the preference, to vary the level of the liquid in the cooling tank, in order to be able or to release a space for loading and unloading or use this space for quenching, without requiring a displacement of the load.
  • Claims 7 and 8 define two different means of supporting and maneuvering the load in the installation, both of which may be preferred in certain specific cases.
  • a first unit of the installation shown in FIG. 1 is constituted by a bell oven 1, that is to say an oven whose inlet is located in its underside.
  • This oven comprises a sealed heating chamber 2, in which there is a jacket 3.
  • Heating bodies 4, arranged around the chamber 2 make it possible to raise the temperature inside the oven to any value very precise desired, up to more than 1000 ° C. They are themselves contained in an outer casing 5 of the oven, the internal walls of which are lined with a thick layer of material 6 forming good thermal insulation.
  • a chimney 7 of the heating chamber 2 crosses the layer 6 and opens into a central opening trale of the upper face of the casing 5, which is closed by a disc 8.
  • a pipe 12 represented schematically by a line in dashed lines and passing through the disc 8, makes it possible to introduce a protection and / or treatment gas into the chamber 2 through its chimney 7.
  • a second fan 13 is also mounted on the upper face of the envelope 5 of the oven 1. It communicates by a channel 14 with the zone of the oven 1 in which the heating bodies 4 are mounted.
  • the inlet 15 of the oven 1 is thermally closed off by a movable partition made up of two sliding shutters 16, 17.
  • a linkage 18, actuated from the outside of the oven 1, makes it possible to move these shutters 16, 17 in the direction of the arrows a, up to position A, shown in phantom, and thus completely clear the entrance to chamber 2.
  • this chamber 2 is ensured by the fact that the furnace 1 itself seals in a sealed manner on a second unit of the installation according to the invention, which is constituted by a cooling or quenching tank 19.
  • a second unit of the installation according to the invention which is constituted by a cooling or quenching tank 19.
  • the side wall of the tank 19 has an opening 20 closed in a sealed manner by a door 21, which can switch -between the position shown in solid lines and that shown in phantom in the drawing.
  • a sealed housing 22 is also fixed against the upper part of the side wall of the tank 19. It contains a motor 23 which actuates a propeller 24 operating in a flow channel 25 of a stirring chamber 26, also fixed to the wall side of bin 19.
  • An expansion compartment 27 is also attached to the latter, in communication, on the one hand, with the interior of the tank 19, through an opening 28 located in the vicinity of the bottom of the latter, and, on the other hand, by a pipe 29, with a tank 30 containing an air chamber 31 inflatable by a pipe 32.
  • the side wall of the container 19 has, finally, an axial boss 33 which, for the simplification of the representation, has been folded down in the plane of the drawing.
  • This boss takes the place of housing a guide column 34, extending over the entire height of the tank 19.
  • a sleeve 35 secured to a horizontal arm 36, slides in the direction of the arrows b or c along the column 34 under the action of a motor (not shown).
  • the arm 36 At its end located near the axis of the tank 19, the arm 36 carries a vertical rod 37, with a cross-shaped profile.
  • four triangular plates 38 forming a receptacle for a conventional grid 39 supporting a load to be treated 40, are rigidly fixed to the wings of the rod 37.
  • the column 34, the sleeve 35, the arm 36, the rod 37 and the plates 38 constitute an elevator which can pass the load 40 from the position which, in the drawing, is shown in solid lines to that in dashed lines B and vice versa.
  • the tank 19 and the expansion compartment 27 are filled with oil up to a level situated slightly below the mouth of the duct 29 in the compartment 27, and the reservoir 30, the duct 29 and the upper part of compartment 27 are filled with nitrogen, the air chamber 31 being fully deflated.
  • the door 21 can be opened; A load 40, disposed on a grid 39, can then be slid in the direction of the arrow d from the position C shown in phantom to the receptacle 38 of the elevator 34-38, previously brought to the low position.
  • the door 21 is closed and the elevator 34-38 is moved to the high position, so as to bring the load 40 to position B, in the heating chamber 2 of the oven. 1.
  • the flaps 16, 17 are moved aside the time to give passage to the load 40.
  • T-cuts, 41 are made in the adjacent edges of the flaps 16, 17, so that they close on the rod 37 lift 34-38, which supports load 40 in room 2 during the entire heating phase.
  • the air chamber 31 can then be inflated so as to expel the nitrogen from the reservoir 30 and to pass it through the duct 29. into the expansion compartment 27.
  • the nitrogen thus arriving in the compartment 27 is expelled at in turn the oil, which, passing through the opening 28, raises its level in the tank 19 to the vicinity of the partition of the oven constituted by the flaps 16, 17.
  • the interior of the furnace 1 and the part of the tank 19 located above the level of the oil 42 form a closed, sealed space which can be filled with a neutral gas, for protection and / or for treatment.
  • An influx of this gas is then brought into the furnace 1 via the line 12 and the installation has a baffled vent (not shown) in the vicinity of the base of the furnace to compensate for the influx of gas brought through the line 12.
  • the engine 9 is started and the gas arriving in the chimney 7 is sent by the fan 11 in the direction of the arrows e, f, first of all around the jacket 3, then, from the base of the latter, through the load 40, the base of which is made accessible to it by the grid 39, strongly openwork.
  • the fan 11 then sucks it through the collar 43 of the shirt 3 to return it around the latter. Thanks to the circulation of gas produced by the fan 11 during the entire heating phase, the temperature is perfectly equalized at all points of the load 40. During this phase, the flaps 16, 17 constitute a heat shield which prevents the oven to radiate on the oil 42.
  • the flaps 16, 17 are briefly separated from one another to allow the elevator 34-38 to return to the low position, in order to immerse the load 40 in the oil 42 and to ensure quenching, as shown in solid lines in the drawing.
  • the flaps 16, 17 ' immediately closed, then constitute a partition which protects the oven from pollution by the oil vapors emanating from the tank 19.
  • the volume of the oil 42 contained in the tank 19 is determined so that during the quenching or cooling phase, the level of this oil is above the upper edge of the brewing chamber 26, so that it s flows over this edge and fills 1-a chamber 26.
  • the propeller 24, driven by the motor 23, then circulates the oil 42 in the direction of the arrows g, which thus passes through the grid 39 and the load 40 by ensuring equal cooling of all the parts making up the latter.
  • the air chamber 31 When the parts of the load 40 are cooled, the air chamber 31 is deflated. Oil 42 then discharges nitrogen 44 from compartment 27 into tank 30 and returns to its initial level.
  • the volume of the reservoir 30 and also that of the compartment 27 are naturally chosen as a function of the volume of oil to be displaced in order to cause the level to pass from one to the other of the two values described.
  • the door 21 can be opened and the installation unloaded by removing the grid 39 and the load 40.
  • the fan 13 can be activated at this time to rapidly cool the oven by sending cold air at high speed against the walls of the chamber 2. It will however be activated more often at the end of the heating phase, when the charge 40 is still in the oven, in order to produce a first partial cooling of the parts of this charge.
  • the operations to be carried out for processing a load 40 are simple and easy to automate.
  • the units making up the installation are also of simple construction. They do not require any mechanism to move them, since all the operations necessary for processing a load are carried out in the position of the plant units, which is shown in the drawing. Notwithstanding its simplicity, the installation according to the invention ensures treatment of the charges 40 under the best possible conditions. Because the parts of the load 40 remain in a perfectly conditioned atmosphere when they pass from the oven to quenching, any oxidation of these parts is avoided. The explosion of flames, which occurs in many known installations, when the hot parts enter the coolant, is also completely suppressed.
  • tank 19 could also contain water or a saline solution.
  • brackets 45 in the form of circular segments, are fixed to the pa cylindrical king of chamber 2. They thus delimit an entry opening 46 of this chamber, which is square.
  • the grid 39 is also square, as is usual, and the load 40 is deposited on this grid without overflowing it.
  • the dimensions of the grid 39 are slightly smaller than those of the opening 46, so that this grid can pass smoothly with the load 40 through this opening.
  • the elevator of this variant comprises a round rod, which is mounted at the end of the arm 36 so as to be able to rotate on itself between two extreme angular positions, spaced from each other by 45 ° (arrow h).
  • this rod in the low position of the elevator, is placed in one of its two extreme positions.
  • the load 40 is then slid over the receptacle 38, taking care to orient the grid 39 parallel to the opening 46.
  • the subsequent passage of the elevator in the high position is carried out without rotating its rod.
  • the load 40 and the grid 39 then pass unhindered through the opening 46, until the underside of the grid 39 is a little higher than the brackets 45.
  • the rod of the elevator is rotated to its other extreme position and the elevator is returned to the lower position. In doing so, the corners of the grid 39 come to rest each in the middle of one of the brackets 45, which thus alone support the load 40 in the chamber 2.
  • the elevator is brought back to the high position without modifying the angular position of its rod, at least without move it away from one of its extreme angular positions.
  • the receptacle 38 then lifts the grid 39 slightly above the brackets 45.
  • the lift rod is angularly moved to its other extreme position.
  • the 45 ° rotation that the grid 39 and the load 40 effect in this way re-establishes the parallelism between the sides of the grid 39 and the internal edges of the consoles 45, so that the elevator descends, passes the grid 39 and the load 40 through the opening 46.
  • the second embodiment differs from the previous one by the means which act on the gas producing the variation in the level of the coolant contained in the quenching tank, and by the elevator intended to move the load 40 vertically.
  • the nitrogen 44 which fills the compartment 27 to maintain the coolant level at the high level in the tank 19, comes here from an industrial bomb 47 of nitrogen under pressure, including the outlet valve 48, operated by hand , remains open to the desired extent during the entire time of use of the installation.
  • the arrival of nitrogen into the compartment 27 via the pipe 29 at the desired time is controlled by an electromagnetic valve 49, which can be controlled automatically.
  • a bypass 50 of the conduit 29, provided with an electromagnetic valve 51 is provided for bringing the nitrogen 44 from the compartment 27 into the sealed enclosure of the installation, which includes the heating chamber 2.
  • the regulator of this second embodiment can support the load 40 in the furnace heating chamber during the entire heating phase, as in the first embodiment, or simply deposit it in this chamber, then withdraw, as in the variant described above with reference to FIGS. 1 and 4. Moreover, the installation according to this second embodiment is identical to that according to the first embodiment and it operates in the same way.
  • the third embodiment (Fig. 3) differs from the previous ones by the few specific arrangements described below.
  • the furnace 56 is equipped to treat loads under high vacuum up to one hundredth of a millimeter of mercury.
  • Its coat 57 waterproof, double wall, is cooled with water which is circulated between the two walls of the coat 57.
  • the latter contains a jacket 58, internally lined with elements 59, 60 ensuring thermal insulation of the heating chamber 61, in which the heating bodies 62 are mounted.
  • a sleeve 63 is tightly fixed in the lower opening of the mantle 57. It extends from the interior of the heating chamber 61 to outside of the mantle 57. Inside the heating chamber, the sleeve 63 is throttled, so as to form a neck 64 which delimits a square opening 65.
  • the upper edge of the neck 64 is intended to support the load 40 and its grid 39 during the heating phase, like the brackets 45 of the variant described with reference to FIGS. 1 and 4.
  • Under the neck 64 are mounted two flaps 66, 67, with the aid of hinges 68, so as to be able to switch between a horizontal position, in which they thermally seal the entrance to the heating chamber 61, and a vertical position, in which they release the opening 65, under the action of a control device (not shown), which can be actuated automatically.
  • the lower opening of the sleeve 63 is sealed off by a pull tab 69, slidably mounted in the upper part of the cooling tank 70 and which can be retracted into position D, sketched in phantom, using the handle 71 in order to free the entry of the oven 56 for the passage of the charges 40 and their grids 39.
  • the movements of the pull tab 69 could also be controlled automatically.
  • the vacuum is produced by a pump 93.
  • the oven 56 is also equipped with means making it possible to produce, after the heating phase, cooling of the parts of the load 40, which may or may not be followed by immersion in the bath tank 70.
  • a powerful fan 72 actuated by a motor 73 to circulate an inert gas in the direction of the arrows h, first through a cooling coil 74 arranged around the jacket 58, then through the load 40 through openings of the sleeve 63 and the flaps 66, 67, previously half open.
  • the equipment of the tank 70 differs from that of the variant described with reference to FIGS. 1 and 4 by the expansion compartment and the means provided for passing the oil 42 from the low level 75, shown in solid lines, to the high level 76, shown in broken lines.
  • the expansion compartment 77 is placed under the tank 19.
  • a pump 78 is used to pass the volume d oil j from compartment 77 in tank 70 through a pipe 79 provided with an electromagnetic valve 80.
  • air or an inert gas enters compartment 77 through une.soupape 81
  • the electromagnetic valves 80 and 83 are opened to allow the oil to flow respectively. from tray 19 into compartment 77 and the air or gas from compartment 77 will escape.
  • the fourth embodiment (Fig. 5) comprises four tanks 19 arranged in a square, which can be filled respectively oil, water and saline solutions. One of them could even be equipped more simply to carry out the re cooling of the charges 40 in air or in an inert gas.
  • An oven 84 is mounted on a sector 85, pivoted around a central column 86, so that it can be brought to the tank 19 in which it will be necessary to cool the parts of the charge introduced into the installation. As in the embodiments described above, the oven 84 rests on the tray 19 selected for the entire duration of the treatment of a load.
  • the oven 84 and the tanks 19 can be fitted in accordance with one or other of the embodiments described above.
  • the fifth embodiment of the installation according to the invention differs from the previous ones only by the mode of loading and unloading of the installation.
  • these operations are carried out by lifting the oven 87 above the cooling tank 88 and doing so. emerge the receptacle 38 of the elevator above the tank 88.
  • the guide column 89 of the sleeve 35 of the elevator is extended upwards so as to also guide the vertical movements of the oven 87 at the start and at the end of processing a charge.
  • the tank 88 does not need to be equipped with a side door or with means for varying the level of the quench bath.
  • the elevator of the bin 88 is replaced by a cable or a chain 90 provided with a hook 91 to which the load to be treated can be suspended in a manner well known to those skilled in the art.
  • the chain 90 crosses the top of the oven 87 and passes through a sheath 92 to become wind 1st on a winch (not shown) powered by a motor (not shown).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP81810293A 1981-07-17 1981-07-17 Wärmebehandlungsvorrichtung Withdrawn EP0070347A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP81810293A EP0070347A1 (de) 1981-07-17 1981-07-17 Wärmebehandlungsvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81810293A EP0070347A1 (de) 1981-07-17 1981-07-17 Wärmebehandlungsvorrichtung

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EP0070347A1 true EP0070347A1 (de) 1983-01-26

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647017A (en) * 1984-12-19 1987-03-03 Stainbrook Norbert E Vacuum heat treating furnace and quench system with drop transfer
EP0221329A1 (de) * 1985-10-31 1987-05-13 Aichelin GmbH Verfahren und Vorrichtung zum Abschrecken von Glühgut
EP0295207A1 (de) * 1987-06-05 1988-12-14 Pierre Beuret Anordnung für einen Haubenglühofen und Abschreckbad
EP0684318A1 (de) * 1994-04-29 1995-11-29 Leybold Durferrit GmbH Verfahren und Vorrichtung zum Abschrecken von Werkstücken mittels einer wässrigen Polymerlösung
EP0806485A1 (de) * 1996-05-06 1997-11-12 Patherm SA Wärmebehandlungsanlage
EP0973001A1 (de) * 1998-07-17 2000-01-19 Patherm SA Verfahren zum Befestigen und Entfernen von Gut in einem Wärmebehandlungsvorrichtung mit einem bodenlosen Ofen
FR2845695A1 (fr) * 2002-10-11 2004-04-16 Patherm Sa Procede et installation de traitement thermique de pieces metalliques
WO2007073707A1 (en) * 2005-12-29 2007-07-05 Lac S.R.O. Furnace, particularly for thermal and chemotermal treatment of metal products
CN102634648A (zh) * 2012-04-26 2012-08-15 广东世创金属科技有限公司 具有在淬火中保护气氛及自动转移工件装置的井式炉
CN102980211A (zh) * 2012-12-14 2013-03-20 湖南科技大学 一种家用多功能环保节能煤炉
CN108453211A (zh) * 2018-05-10 2018-08-28 嘉兴市乍浦杭湾重型机械有限公司 一种汽车半轴锻压模具的冷却装置
CN112391518A (zh) * 2020-10-29 2021-02-23 重庆长安工业(集团)有限责任公司 网带式电阻加热炉马弗罐氮气输送口安装结构
CN113604635A (zh) * 2021-07-27 2021-11-05 雷桂群 一种用于太阳能集热器制造系统的回火设备及其回火方法
CN113897479A (zh) * 2021-09-10 2022-01-07 绩溪徽腾机械有限公司 一种静载抗弯强度高的链条销轴用淬火设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341766A (en) * 1941-12-12 1944-02-15 Vernie A Fox Rapid-quench heat-treating oven
GB561408A (en) * 1942-01-10 1944-05-18 Western Electric Co Improved heat-treating apparatus
GB899793A (en) * 1960-03-04 1962-06-27 Ass Elect Ind Improvements in and relating to furnaces
FR1417402A (fr) * 1964-10-28 1965-11-12 Machine à tremper pour pièces longues et à tremper debout
FR1554834A (de) * 1966-12-20 1969-01-24
CH478918A (fr) * 1968-08-26 1969-09-30 Kaesermann & Sperisen S A Installation automatique pour traiter thermiquement des objets
FR2159511A1 (de) * 1971-11-12 1973-06-22 Degussa
DE2211286A1 (de) * 1972-03-09 1973-09-27 Aichelin Fa J Ofenanlage zur waermebehandlung von stahl und nichteisenmetallen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341766A (en) * 1941-12-12 1944-02-15 Vernie A Fox Rapid-quench heat-treating oven
GB561408A (en) * 1942-01-10 1944-05-18 Western Electric Co Improved heat-treating apparatus
GB899793A (en) * 1960-03-04 1962-06-27 Ass Elect Ind Improvements in and relating to furnaces
FR1417402A (fr) * 1964-10-28 1965-11-12 Machine à tremper pour pièces longues et à tremper debout
FR1554834A (de) * 1966-12-20 1969-01-24
CH478918A (fr) * 1968-08-26 1969-09-30 Kaesermann & Sperisen S A Installation automatique pour traiter thermiquement des objets
FR2159511A1 (de) * 1971-11-12 1973-06-22 Degussa
DE2211286A1 (de) * 1972-03-09 1973-09-27 Aichelin Fa J Ofenanlage zur waermebehandlung von stahl und nichteisenmetallen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
La Metallurgie, Vol. 103, No.2, Fevrier 1971 Paris (FR) F. JACQUES: "Ultilisation du Chauffage par Effet Joule dans les Traitements Thermiques sous Vide" pages 63-68 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647017A (en) * 1984-12-19 1987-03-03 Stainbrook Norbert E Vacuum heat treating furnace and quench system with drop transfer
EP0221329A1 (de) * 1985-10-31 1987-05-13 Aichelin GmbH Verfahren und Vorrichtung zum Abschrecken von Glühgut
EP0295207A1 (de) * 1987-06-05 1988-12-14 Pierre Beuret Anordnung für einen Haubenglühofen und Abschreckbad
EP0684318A1 (de) * 1994-04-29 1995-11-29 Leybold Durferrit GmbH Verfahren und Vorrichtung zum Abschrecken von Werkstücken mittels einer wässrigen Polymerlösung
EP0806485A1 (de) * 1996-05-06 1997-11-12 Patherm SA Wärmebehandlungsanlage
EP0973001A1 (de) * 1998-07-17 2000-01-19 Patherm SA Verfahren zum Befestigen und Entfernen von Gut in einem Wärmebehandlungsvorrichtung mit einem bodenlosen Ofen
FR2845695A1 (fr) * 2002-10-11 2004-04-16 Patherm Sa Procede et installation de traitement thermique de pieces metalliques
WO2004033731A1 (fr) * 2002-10-11 2004-04-22 Patherm Sa Procede de traitement thermique de pieces metalliques
WO2007073707A1 (en) * 2005-12-29 2007-07-05 Lac S.R.O. Furnace, particularly for thermal and chemotermal treatment of metal products
CN102634648A (zh) * 2012-04-26 2012-08-15 广东世创金属科技有限公司 具有在淬火中保护气氛及自动转移工件装置的井式炉
CN102980211A (zh) * 2012-12-14 2013-03-20 湖南科技大学 一种家用多功能环保节能煤炉
CN102980211B (zh) * 2012-12-14 2015-04-15 湖南科技大学 一种家用多功能环保节能煤炉
CN108453211A (zh) * 2018-05-10 2018-08-28 嘉兴市乍浦杭湾重型机械有限公司 一种汽车半轴锻压模具的冷却装置
CN112391518A (zh) * 2020-10-29 2021-02-23 重庆长安工业(集团)有限责任公司 网带式电阻加热炉马弗罐氮气输送口安装结构
CN113604635A (zh) * 2021-07-27 2021-11-05 雷桂群 一种用于太阳能集热器制造系统的回火设备及其回火方法
CN113897479A (zh) * 2021-09-10 2022-01-07 绩溪徽腾机械有限公司 一种静载抗弯强度高的链条销轴用淬火设备

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