EP0805218A1 - Abtropfstation und ein Abtropfstation enthaltende Wärmebehandlungsvorrichtung - Google Patents

Abtropfstation und ein Abtropfstation enthaltende Wärmebehandlungsvorrichtung Download PDF

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Publication number
EP0805218A1
EP0805218A1 EP96107005A EP96107005A EP0805218A1 EP 0805218 A1 EP0805218 A1 EP 0805218A1 EP 96107005 A EP96107005 A EP 96107005A EP 96107005 A EP96107005 A EP 96107005A EP 0805218 A1 EP0805218 A1 EP 0805218A1
Authority
EP
European Patent Office
Prior art keywords
enclosure
station
opening
draining
oven
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
EP96107005A
Other languages
English (en)
French (fr)
Other versions
EP0805218B1 (de
Inventor
Thierry Spérisen
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.)
Patherm SA
Original Assignee
Patherm SA
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 Patherm SA filed Critical Patherm SA
Priority to AT96107005T priority Critical patent/ATE199405T1/de
Priority to DE69611905T priority patent/DE69611905D1/de
Priority to EP96107005A priority patent/EP0805218B1/de
Publication of EP0805218A1 publication Critical patent/EP0805218A1/de
Application granted granted Critical
Publication of EP0805218B1 publication Critical patent/EP0805218B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—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
    • 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
    • C21D1/74—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
    • 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

Definitions

  • the invention generally relates to thermal treatment installations and in particular a drip station intended to drip loads to be treated such as metal parts coming from a cooling tank containing a liquid bath.
  • the invention also relates to a thermal treatment installation comprising in particular at least one oven having an opening downwards and at least one cooling tank having an opening upwards, the oven and the tank being able to be brought into position superposed by a movement relative to one with respect to the other so that the opening of the oven can come opposite the opening of the tank, means for transferring loads between the oven and the tank, the installation further comprising a such a drip station.
  • a heat treatment installation as defined above and comprising at least one oven open at the bottom, generally designated bell furnace, and a closure plug is already known for example from document EP-A-0 296 102.
  • quenching media such as oils, molten salts
  • the quenching media are often highly polluting and it is advisable to prevent them from coming into contact with certain elements of the installation.
  • the charges are generally high above the quenching medium using means risers and the load can then drip into the cooling tank for a desired time.
  • This draining operation has the disadvantage of mobilizing the cooling tank during the draining time, which is substantially of the same order of magnitude as the duration of a quenching, thus preventing any other quenching in this tank during draining. . Furthermore, it has been observed that such draining could lead to productivity losses of the order of 30%.
  • the main object of the invention is to remedy the drawbacks of the above-mentioned prior art by providing a draining station which makes it simple and economical to recover the draining product without having to mobilize a cooling tank and thus significantly increasing the efficiency of thermal treatment installations comprising them.
  • the purpose of the draining station according to the invention is also to avoid pollution of the immediate environment by the vapors and fumes which emanate from the charges during the draining operation.
  • the invention also aims to provide a thermal treatment installation of the kind indicated above, in which a draining station is integrated to allow optimal exploitation of the production capacities of the elements which compose it.
  • the subject of the invention is a draining station intended for draining loads to be treated such as metal parts coming from a cooling tank containing a liquid bath, characterized in that it comprises an enclosure having an opening d entry open downward and allowing the loading and unloading of said enclosure with said loads on anchoring means, in that said enclosure comprises means for closing said entry opening formed lower than the anchored loads and in that said closure means comprise a drip liquid collector.
  • the draining station allows on the one hand to collect autonomously the quenching medium flowing from the charge which is being drained and on the other hand to confine the emanations and vapors emitted of these charges. This considerably limits the risk of pollution of the environment of the installation.
  • the cooling tank is therefore immediately available for quenching another load as soon as the transfer of the previous quenched load to the drip station has been carried out.
  • the closure means comprise a drawer movable in a direction parallel to the plane of said inlet opening and thus allowing its lateral clearance, said drawer comprising said collector.
  • sealing means comprising a drawer makes it possible to move the liquid collector in a horizontal plane and thus to considerably reduce the risks of loss of the liquid collected during the opening and closing movements of the drip station. Furthermore, this drawer structure is compact and therefore does not disadvantageously increase the size of the drip station.
  • the subject of the invention is a thermal treatment installation comprising at least one oven having an opening downwards and at least one cooling tank having an opening upwards, the oven and the tank being able to be brought in. position superimposed by a relative movement of one with respect to the other so that the opening of the oven can come opposite the opening of the tank, means for transferring a load between the oven and the tank, characterized in what it further comprises a drip station comprising an enclosure having an inlet opening open downward and allowing loading, in particular from the cooling tank, and unloading of said enclosure with said load on means anchoring, said enclosure comprising means for closing said inlet opening, formed lower than the anchored load, and said closure means comprise a drip liquid collector.
  • FIG. 1 a draining station according to the invention, designated by the general reference numeral 1.
  • This station 1 is intended to drain a load 2 formed by a part or a set of metal parts to be treated coming from a cooling tank 4 having an opening upwards (FIG. 3) and containing a bath B.
  • the load is disposed on a support plate 6 produced for example in the form of a rigid, honeycombed flat grid.
  • the drip station 1 comprises an enclosure 8 suspended by suspension means 10 from a support structure 12.
  • the enclosure 8 has an inlet opening 14 opening downward and allowing the enclosure to be loaded and unloaded 8 from below the station 1, typically from the cooling tank 4.
  • the term "enclosure” means any volume in which the load is received entirely or partially, this volume not necessarily being delimited by continuous walls.
  • a frame suspended from the support structure by means of four columns at its four corners defines an enclosure within the meaning of the present invention.
  • the support plate 6 has substantially a complementary contour and dimensions slightly smaller than those of the inlet opening 14 so that the plate can pass without incident with the load 2 through the opening 14.
  • the support plate 6 provided with the load 2 can be introduced into the opening 14 by means of ME lifting means, for example integral with the cooling tank 4, while it is in a first position (shown in broken lines in the figure 2) in which the support plate is oriented parallel to the opening 14.
  • the support plate can pivot around its central axis XX by an angular distance ⁇ determined under the effect of an actuator (not shown) and be brought into a second position (shown in solid lines in FIG. 2) in which parts 20 of the plate are superimposed on the studs 16.
  • the lifting means can be lowered and the parts 20 can each rest on one of the studs 16.
  • These studs retaining 16 serve as means for anchoring the load 2 and thus support the support plate 6 provided with the load 2 during the draining operation. The unloading of the enclosure 8 is carried out simply by repeating the above process in reverse.
  • the enclosure 8 further comprises closure means 22 for the inlet opening 14.
  • closure means 22 are arranged in a lower part of the draining station and more particularly in a part of the station which is below the load to be drained.
  • These means 22 include a drawer 24 having a cavity in which the drip liquid is collected.
  • the drawer 24 is movable in a direction parallel to the plane of the inlet opening between two extreme positions, respectively a closed position (shown in strong lines in Figure 1) in which the cavity of the drawer is located opposite the opening 14 and an open position (shown in broken lines in FIG. 1) in which the drawer is released laterally and frees access to the opening 14.
  • the drawer 24 slides, by means of rollers 26 integral with the drawer, along two parallel slides 28 (only one being visible in FIG. 1) which extend on either side of the opening 14.
  • the slides 28 are integral with the enclosure 8 and can typically be formed from two section sections in "C", the upper branch of "C” being fixed for example by welding on a lower wall of the enclosure 8 and the rollers 26 circulating on the upper face of the lower branch of "VS".
  • the slide 24 is set in motion by an actuator 30.
  • the latter can advantageously be formed by a hydraulic actuator whose cylinder is fixed to the enclosure 8 and whose end of the rod is fixed to the drawer.
  • the opening 14 can be released and closed without manual intervention by an operator.
  • the bottom 32 of the cavity of the drawer 24 is inclined to allow the flow of the drip liquid towards a lowest region of the bottom in which is provided an orifice connected to a drain valve 34.
  • the bottom has the shape of a strongly flared funnel, but it is understood that one could consider any other form of bottom ensuring the same function of drainage of a liquid towards a particular point.
  • FIG 4 there is shown a heat treatment installation as shown in Figure 3, in which the drip station 1 is not fixed relative to its support structure but can be moved in a direction YY to from a first position (shown in solid lines) in which it is located above the cooling tank to a second position (shown in broken lines) in which it is released laterally and frees access to the cooling tank.
  • the suspension means of the drip station are for example connected to rollers 36 which run on two parallel rails 38 as shown schematically in the figure.
  • the drip station 1 can also be mobile along another axis perpendicular to the YY axis above the cooling tank.
  • the drip station 1 can be integrated into a heat treatment installation comprising a conventional bell oven 40 having an opening downwards and a cooling tank 4.
  • the drip station 1 and the oven 40 are in the upper position and the cooling tank 4 is in the lower position.
  • the drip station 1 and the oven 40 are fixed relative to each other and the cooling tank 4 is mounted on rollers 42 and therefore movable below the line formed by the oven and the drip station.
  • the mobile drip station along an axis Y-Y shown in FIG. 4 as well as the variant in which the drip station is mobile along two perpendicular axes find an advantageous application.
  • the drip station integrated in the installation shown in Figure 5 can be used as follows.
  • the load 2 is loaded into the enclosure of the oven 40 by conventional transfer means (not shown) in view of heating to a determined quenching temperature.
  • the quenching tank 4 is then moved below the oven 40.
  • the oven is then opened and the lifting means ME transfer the load 2 from the ovens 40 to the cooling bath B.
  • the cooling tank 4 is placed under the drip station 1 so that the opening of the tank is located substantially opposite the drawer 24 or the inlet opening 14 of the enclosure 8.
  • the actuator 30 of drawer 24 is then commanded to clear the inlet opening 14.
  • the hardened load 2 which must be drained is introduced and anchored in the enclosure 8 using means ME risers and anchoring means 16 as already described above.
  • the bac cooling 4 is then still below the opening 14 and collects part of the drip liquid during the transfer of the load from the tank to the enclosure.
  • the actuator 30 of the drawer 24 is controlled to close the inlet opening 14.
  • the cavity of the drawer is then located below the load 2 and thus recovers the quenching liquid which flows of the load 2.
  • the recovered liquid is then drained later after the completion of the draining operation by the simple opening of the valve 34.
  • the cooling tank and / or the drip station can be released to make the cooling tank 4 immediately available for a new quenching operation.
  • the draining station may include means for evacuating the vapors emanating from the charge towards treatment means such as filters, washing columns or the like.
  • the installation which has just been described comprises an oven 40, a cooling tank 4 and a drip station 1 but it goes without saying that such an installation could comprise several of each of these elements.

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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)
  • Treatment Of Fiber Materials (AREA)
  • Drying Of Solid Materials (AREA)
EP96107005A 1996-05-03 1996-05-03 Abtropfstation und ein Abtropfstation enthaltende Wärmebehandlungsvorrichtung Expired - Lifetime EP0805218B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT96107005T ATE199405T1 (de) 1996-05-03 1996-05-03 Abtropfstation und ein abtropfstation enthaltende wärmebehandlungsvorrichtung
DE69611905T DE69611905D1 (de) 1996-05-03 1996-05-03 Abtropfstation und ein Abtropfstation enthaltende Wärmebehandlungsvorrichtung
EP96107005A EP0805218B1 (de) 1996-05-03 1996-05-03 Abtropfstation und ein Abtropfstation enthaltende Wärmebehandlungsvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96107005A EP0805218B1 (de) 1996-05-03 1996-05-03 Abtropfstation und ein Abtropfstation enthaltende Wärmebehandlungsvorrichtung

Publications (2)

Publication Number Publication Date
EP0805218A1 true EP0805218A1 (de) 1997-11-05
EP0805218B1 EP0805218B1 (de) 2001-02-28

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Application Number Title Priority Date Filing Date
EP96107005A Expired - Lifetime EP0805218B1 (de) 1996-05-03 1996-05-03 Abtropfstation und ein Abtropfstation enthaltende Wärmebehandlungsvorrichtung

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Country Link
EP (1) EP0805218B1 (de)
AT (1) ATE199405T1 (de)
DE (1) DE69611905D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006001068A1 (ja) * 2004-06-23 2006-01-05 Koyo Thermo Systems Co., Ltd. 焼入方法およびこれに用いられる装置
CN115044765A (zh) * 2022-06-13 2022-09-13 玉环普天单向器有限公司 变速箱单向器星轮的热处理设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB987338A (en) * 1963-04-03 1965-03-24 Gibbons Brothers Ltd New or improved transfer devices for articles
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
EP0671476A1 (de) * 1994-03-12 1995-09-13 Solo Fours Industriels Sa Wärmebehandlungsanlage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB987338A (en) * 1963-04-03 1965-03-24 Gibbons Brothers Ltd New or improved transfer devices for articles
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
EP0671476A1 (de) * 1994-03-12 1995-09-13 Solo Fours Industriels Sa Wärmebehandlungsanlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
E. MAINHARD: "Trempe d outils: quelques solutions", MACHINE MODERNE, no. 860, November 1981 (1981-11-01), PARIS FR, pages 83 - 85, XP002017065 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006001068A1 (ja) * 2004-06-23 2006-01-05 Koyo Thermo Systems Co., Ltd. 焼入方法およびこれに用いられる装置
CN115044765A (zh) * 2022-06-13 2022-09-13 玉环普天单向器有限公司 变速箱单向器星轮的热处理设备

Also Published As

Publication number Publication date
EP0805218B1 (de) 2001-02-28
DE69611905D1 (de) 2001-04-05
ATE199405T1 (de) 2001-03-15

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