EP0805218A1 - Draining station and heat treatment installation comprising such a drain station - Google Patents
Draining station and heat treatment installation comprising such a drain station Download PDFInfo
- 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
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- 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.)
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Classifications
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- 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
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- 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
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- 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
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- 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
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- 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)
Abstract
Description
L'invention concerne généralement les installations de traitement thermique et en particulier une station d'égouttage destinée à égoutter des charges à traiter telles que des pièces métalliques provenant d'un bac de refroidissement contenant un bain liquide.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.
L'invention concerne également une installation de traitement thermique comportant notamment au moins un four ayant une ouverture vers le bas et au moins un bac de refroidissement ayant une ouverture vers le haut, le four et le bac pouvant être amenés en position superposée par un mouvement relatif de l'un par rapport à l'autre de sorte que l'ouverture du four puisse venir en regard de l'ouverture du bac, des moyens de transfert des charges entre le four et le bac, l'installation comprenant en outre une telle station d'égouttage.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.
Une installation de traitement thermique telle que définie ci-dessus et comportant au moins un four ouvert vers le bas, désigné généralement four à cloche, et un bouchon de fermeture est déjà connue par exemple du document EP-A-0 296 102.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.
Dans les installations de traitement thermique du type de celle décrite dans le document EP-A-0 296 102 et présentant des bacs de refroidissement ou de trempe ouverts vers le haut et contenant un milieu de trempe liquide, et il est nécessaire d'égoutter la charge traitée sortant du bac avant de la transférer ailleurs, par exemple vers une autre station de traitement.In thermal treatment installations of the type described in document EP-A-0 296 102 and having cooling or quenching tanks open upwards and containing a liquid quenching medium, and it is necessary to drain the treated load leaving the bin before transferring it elsewhere, for example to another treatment station.
En effet, les milieux de trempe tels que des huiles, des sels fondus, sont souvent hautement polluants et il convient d'éviter que ces derniers n'entrent en contact avec certains éléments de l'installation.Indeed, the quenching media such as oils, molten salts, are often highly polluting and it is advisable to prevent them from coming into contact with certain elements of the installation.
A cet effet, les charges sont généralement élevées au-dessus du milieu de trempe à l'aide de moyens élévateurs et la charge peut alors s'égoutter dans le bac de refroidissement pendant un temps désire.For this purpose, 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.
Cette opération d'égouttage présente l'inconvénient de mobiliser le bac de refroidissement pendant la durée d'égouttage, qui est sensiblement du même ordre de grandeur que la durée d'une trempe, interdisant ainsi toute autre trempe dans ce bac pendant l'égouttage. Par ailleurs on a constate qu'un tel égouttage pouvait conduire à des pertes de productivité de l'ordre de 30%.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%.
Ainsi, l'invention a pour but principal de remédier aux inconvénients de l'art antérieur susmentionné en fournissant une station d'égouttage qui permette de façon simple et économique de récupérer le produit de l'égouttage sans avoir à mobiliser un bac de refroidissement et ainsi d'augmenter de façon significative le rendement des installations de traitement thermique les comprenant.Thus, 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.
La station d'égouttage selon l'invention a également pour but d'éviter une pollution de l'environnement immédiat par les vapeurs et émanations qui se dégagent des charges lors de l'opération d'égouttage.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.
L'invention a également pour but de fournir une installation de traitement thermique du genre indiqué plus haut, dans laquelle est intégrée une station d'égouttage pour permettre une exploitation optimale des capacités de production des éléments qui la compose.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.
A cet effet l'invention a pour objet une station d'égouttage destinée à égoutter des charges à traiter telles que pièces métalliques provenant d'un bac de refroidissement contenant un bain liquide, caractérisée en ce qu'elle comprend une enceinte ayant une ouverture d'entrée ouverte vers le bas et permettant le chargement et le déchargement de ladite enceinte avec lesdites charges sur des moyens d'ancrage, en ce que ladite enceinte comprend des moyens d'obturation de ladite ouverture d'entrée ménagés plus bas que les charges ancrées et en ce que lesdits moyens d'obturation comprennent un collecteur de liquide d'égouttage.To this end, 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.
Grâce à ces caractéristiques, la station d'égouttage permet d'une part de collecter de façon autonome le milieu de trempe s'écoulant de la charge qui est en cours d'égouttage et d'autre part de confiner les émanations et vapeurs se dégageant de ces charges. On limite ainsi de façon importante le risque de pollution de l'environnement de l'installation. Le bac de refroidissement est donc immédiatement disponible pour la trempe d'une autre charge dès que le transfert de la charge précédente trempée dans la station d'égouttage a été effectué.Thanks to these characteristics, 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.
Selon une caractéristique avantageuse, les moyens d'obturation comprennent un tiroir mobile selon une direction parallèle au plan de ladite ouverture d'entrée et permettant ainsi son dégagement latéral, ledit tiroir comprenant ledit collecteur.According to an advantageous characteristic, 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.
L'utilisation de moyens d'obturation comprenant un tiroir permet de déplacer le collecteur de liquide selon un plan horizontal et ainsi de diminuer considérablement les risques de perte du liquide collecté lors des mouvements d'ouverture et de fermeture de la station d'égouttage. Par ailleurs cette structure en tiroir est compacte et par conséquent n'augmente pas de façon désavantageuse l'encombrement de la station d'égouttage.The use of 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.
Selon un autre aspect, l'invention a pour objet une installation de traitement thermique comprenant au moins un four ayant une ouverture vers le bas et au moins un bac de refroidissement ayant une ouverture vers le haut, le four et le bac pouvant être amenés en position superposée par un mouvement relatif de l'un par rapport à l'autre de sorte que l'ouverture du four puisse venir en regard de l'ouverture du bac, des moyens de transfert une charge entre le four et le bac, caractérisée en ce qu'elle comprend en outre une station d'égouttage comportant une enceinte ayant une ouverture d'entrée ouverte vers le bas et permettant le chargement, notamment à partir du bac de refroidissement, et le déchargement de ladite enceinte avec ladite charge sur des moyens d'ancrage, ladite enceinte comprenant des moyens d'obturation de ladite ouverture d'entrée, ménagés plus bas que la charge ancrée, et lesdits moyens d'obturation comprennent un collecteur de liquide d'égouttage.According to another aspect, 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.
Une telle installation de traitement thermique permet d'éviter une immobilisation du bac de refroidissement au dessus duquel s'opère normalement l'égouttage des charges dans les installations de l'art antérieur et ainsi d'optimiser l'utilisation de l'installation en rendant ces bacs immédiatement disponible pour la trempe de nouvelles charges.Such a heat treatment installation makes it possible to avoid immobilization of the cooling tank above which the drainage of the charges normally takes place in the installations of the prior art and thus to optimize the use of the installation by making these tanks immediately available for quenching new loads.
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante de modes de réalisation de l'invention donnés à titre purement illustratif et non limitatif, cette description étant faite en liaison avec les dessins dans lesquels :
- la figure 1 est une vue en coupe d'une station d'égouttage selon l'invention avec ses moyens d'obturation représentés en position ouverte et fermée;
- la figure 2 est une vue en coupe selon la ligne II-II la figure 1 montrant les moyens d'ancrage de la charge dans la station d'égouttage selon l'invention, la charge étant représentée dans deux positions distinctes, où elle est respectivement introduite dans la station d'égouttage et ancrée dans cette dernière;
- la figure 3 est une vue en coupe représentant une installation de traitement thermique montrant un bac de refroidissement placé au dessous d'une station d'égouttage selon l'invention;
- la figure 4 est une vue d'une variante de l'installation de traitement thermique représentée à la figure 3, et
- la figure 5 est une vue en élévation d'une installation de traitement thermique selon la figure 3, montrant également un four de traitement thermique.
- Figure 1 is a sectional view of a drainage station according to the invention with its sealing means shown in the open and closed position;
- Figure 2 is a sectional view along line II-II Figure 1 showing the means for anchoring the load in the draining station according to the invention, the load being shown in two separate positions, where it is respectively introduced into and anchored in the drip station;
- Figure 3 is a sectional view showing a thermal treatment installation showing a cooling tank placed below a drip station according to the invention;
- FIG. 4 is a view of a variant of the thermal treatment installation shown in FIG. 3, and
- Figure 5 is an elevational view of a heat treatment installation according to Figure 3, also showing a heat treatment oven.
En se référant tout d'abord aux figures 1 à 3, on voit une station d'égouttage selon l'invention, désignée par la référence numérique générale 1. Cette station d'égouttage 1 est destinée à égoutter une charge 2 formée par une pièce ou un ensemble de pièces métalliques à traiter provenant d'un bac de refroidissement 4 ayant une ouverture vers le haut (figure 3) et contenant un bain B. La charge est disposée sur un plateau-support 6 réalisé par exemple sous la forme d'une grille rigide plane alvéolée.Referring first to Figures 1 to 3, we see a draining station according to the invention, designated by the
La station d'égouttage 1 comprend une enceinte 8 suspendue par des moyens de suspension 10 à une structure de support 12. L'enceinte 8 présente une ouverture d'entrée 14 débouchant vers le bas et permettant le chargement et le déchargement de l'enceinte 8 depuis le dessous de la station 1, typiquement à partir du bac de refroidissement 4.The
Dans le cadre de l'invention et dans la description et les revendications qui suivent on entend par "enceinte" tout volume dans lequel la charge est reçue entièrement ou partiellement, ce volume n'étant pas nécessairement délimité par des parois continues. Par exemple, un cadre suspendu à la structure de support par l'intermédiaire de quatre colonnes à ses quatre coins défini une enceinte au sens de la présente invention.In the context of the invention and in the description and the claims which follow, the term "enclosure" means any volume in which the load is received entirely or partially, this volume not necessarily being delimited by continuous walls. For example, 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.
Dans la partie inférieure de l'enceinte 8 sont prévus des plots de retenue 16 qui font saillie à partir de la paroi intérieure 18 de l'enceinte 8. Ces plots 16 confèrent à l'ouverture d'entrée 14 un contour circulaire intenté dans l'exemple illustré. Le plateau-support 6 présente sensiblement un contour complémentaire et des dimensions légèrement inférieures à celles de l'ouverture d'entrée 14 afin que le plateau puisse passer sans encombre avec la charge 2 à travers l'ouverture 14. Ainsi, le plateau-support 6 muni de la charge 2 peut être introduit dans l'ouverture 14 par l'intermédiaire de moyens élévateurs ME, par exemple solidaire du bac de refroidissement 4, alors qu'il se trouve dans une première position (représentée en trait interrompu à la figure 2) dans laquelle le plateau-support est orienté parallèlement à l'ouverture 14. Une fois que la partie la plus basse du plateau se trouve un peu plus haut que les plots 16, le plateau-support peut pivoter autour de son axe central X-X d'une distance angulaire β déterminée sous l'effet d'un actionneur (non représenté) et être amené dans une deuxième position (représentée en trait fort à la figure 2) dans laquelle des parties 20 du plateau se trouvent superposées aux plots 16. A cet instant, les moyens élévateurs peuvent s'abaisser et les parties 20 peuvent reposer chacune sur un des plots 16. Ces plots de retenue 16 servent de moyens d'ancrage de la charge 2 et supportent ainsi le plateau-support 6 muni de la charge 2 au cours de l'opération d'égouttage. Le déchargement de l'enceinte 8 s'effectue simplement en répétant le procédé ci-dessus de manière inverse.In the lower part of the
Il va de soi que d'autres moyens peuvent être envisagés pour assurer l'ancrage du plateau-support dans l'enceinte, on pourrait par exemple prévoir de suspendre le plateau-support 6 dans l'enceinte 8.It goes without saying that other means can be envisaged for anchoring the support plate in the enclosure, one could for example provide for suspending the
L'enceinte 8 comprend en outre des moyens d'obturation 22 de l'ouverture d'entrée 14. Ces moyens d'obturation 22 sont disposés dans une partie inférieure de la station d'égouttage et plus particulièrement dans une partie de la station qui se trouve en dessous de la charge à égoutter. Ces moyens 22 comprennent un tiroir 24 ayant une cavité dans laquelle le liquide d'égouttage est collecté. Le tiroir 24 est mobile selon une direction parallèle au plan de l'ouverture d'entrée entre deux positions extrêmes, respectivement une position fermée (représentée en trait fort à la figure 1) dans laquelle la cavité du tiroir se trouve en regard de l'ouverture 14 et une position ouverte (représentée en trait interrompu à la figure 1) dans laquelle le tiroir est dégagé latéralement et libère l'accès à l'ouverture 14.The
Le tiroir 24 coulisse, par l'intermédiaire de galets 26 solidaires du tiroir, le long de deux glissières parallèles 28 (une seule étant visible à la figure 1) qui s'étendent de part et d'autre de l'ouverture 14. Les glissières 28 sont solidaires de l'enceinte 8 et peuvent être formées typiquement de deux profilés à section en "C", la branche supérieure du "C" étant fixée par exemple par soudage sur une paroi inférieure de l'enceinte 8 et les galets 26 circulant sur la face supérieure de la branche inférieure du "C".The
Dans l'exemple de réalisation illustré, le tiroir 24 est mis en mouvement par un actionneur 30. Ce dernier peut être avantageusement être formé d'un vérin à commande hydraulique dont le cylindre est fixé à l'enceinte 8 et dont l'extrémité de la tige est fixée au tiroir. Ainsi, l'ouverture 14 peut être dégagée et fermée sans intervention manuelle d'un opérateur.In the exemplary embodiment illustrated, the
Le fond 32 de la cavité du tiroir 24 est incliné pour permettre l'écoulement du liquide d'égouttage vers une région la plus basse du fond dans laquelle est prévu un orifice relié à une vanne de vidange 34. Dans l'exemple illustré, le fond présente la forme d'un entonnoir fortement évasé, mais il est bien entendu que l'on pourrait envisager toute autre forme de fond assurant la même fonction de drainage d'un liquide vers un point particulier.The
A la figure 4, on a représenté une installation de traitement thermique telle que représentée à la figure 3, dans laquelle la station d'égouttage 1 n'est pas fixe par rapport à sa structure de support mais peut être déplacée selon une direction Y-Y à partir d'une première position (représentée en trait fort) dans laquelle elle se trouve au dessus du bac de refroidissement vers une deuxième position (représentée en trait interrompu) dans laquelle elle est dégagée latéralement et libère l'accès au bac de refroidissement. Dans ce cas, les moyens de suspension de la station d'égouttage sont par exemple relié à des galets 36 qui cheminent sur deux rails parallèles 38 comme cela est représenté schématiquement à la figure.In Figure 4, there is shown a heat treatment installation as shown in Figure 3, in which the
Selon une variante (non représentée) de l'installation représentée à la figure 4, la station d'égouttage 1 peut être en outre mobile selon un autre axe perpendiculaire à l'axe Y-Y au-dessus du bac de refroidissement.According to a variant (not shown) of the installation shown in Figure 4, the
En se référant maintenant à la figure 5, on voit comment la station d'égouttage 1 peut être intégrée dans une installation de traitement thermique comprenant un four à cloche 40 classique ayant une ouverture vers le bas et un bac de refroidissement 4. Comme cela ressort de la figure, la station d'égouttage 1 et le four 40 sont en position supérieure et le bac de refroidissement 4 est en position inférieure. Dans le mode de réalisation illustré, la station d'égouttage 1 et le four 40 sont fixes l'un par rapport à l'autre et le bac de refroidissement 4 est monté sur des roulettes 42 et par conséquent mobile en dessous de la ligne formée par le four et la station d'égouttage. Bien entendu l'inverse pourrait être envisagé. Aussi dans ce contexte, la station d'égouttage mobile selon un axe Y-Y représentée à la figure 4 ainsi que la variante dans laquelle la station d'égouttage est mobile selon deux axes perpendiculaires trouvent une application avantageuse.Referring now to FIG. 5, it can be seen how the
La station d'égouttage intégrée dans l'installation représentée à la figure 5 peut être utilisée de la façon suivante. La charge 2 est chargée dans l'enceinte du four 40 par des moyens de transfert classiques (non représentés) en vu d'un chauffage à une température de trempe déterminée. Le bac de trempe 4 est ensuite déplacée en dessous du four 40. Le four est alors ouvert et les moyens élévateurs ME viennent transférer la charge 2 du fours 40 vers le bain de refroidissement B. Dès que l'opération de trempe de la charge 2 est terminée, le bac de refroidissement 4 est placé sous la station d'égouttage 1 de sorte que l'ouverture du bac se trouve sensiblement en regard du tiroir 24 ou de l'ouverture d'entrée 14 de l'enceinte 8. L'actionneur 30 du tiroir 24 est alors commandé pour dégager l'ouverture d'entrée 14. Dès que l'ouverture 14 est dégagée, la charge 2 trempée qui doit être égouttée est introduite et ancrée dans l'enceinte 8 à l'aide de moyens élévateurs ME et des moyens d'ancrage 16 comme cela a déjà été décrit plus haut. Le bac de refroidissement 4 est alors encore au-dessous de l'ouverture 14 et collecte une partie du liquide d'égouttage au cours du transfert de la charge du bac vers l'enceinte. La charge 2 étant convenablement ancrée, l'actionneur 30 du tiroir 24 est commandé pour fermer l'ouverture d'entrée 14. La cavité du tiroir se trouve alors au-dessous de la charge 2 et récupère ainsi le liquide de trempe qui s écoule de la charge 2. Le liquide récupéré est ensuite vidangé ultérieurement après l'achèvement de l'opération d'égouttage par la simple ouverture de la vanne 34. Ainsi, dès que le tiroir 24 est fermé, le bac de refroidissement et/ou la station d'égouttage peuvent être dégagés afin de rendre le bac de refroidissement 4 immédiatement disponible pour une nouvelle opération de trempe.The drip station integrated in the installation shown in Figure 5 can be used as follows. The
On notera que selon une variante de réalisation non représentée, la station d'égouttage peut comprendre des moyens d'évacuation des vapeurs se dégageant de la charge vers des moyens de traitement tels que des filtres, colonnes de lavage ou analogues.It will be noted that according to a variant embodiment not shown, 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.
L'installation qui vient d'être décrite comprend un four 40, un bac de refroidissement 4 et une station d'égouttage 1 mais il va de soi qu'une telle installation pourrait comprendre plusieurs de chacun de ces éléments.The installation which has just been described comprises an
Claims (10)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT96107005T ATE199405T1 (en) | 1996-05-03 | 1996-05-03 | DRIPPING STATION AND HEAT TREATMENT APPARATUS CONTAINING A DRIPPING STATION |
DE69611905T DE69611905D1 (en) | 1996-05-03 | 1996-05-03 | Draining station and a heat treatment device containing a draining station |
EP96107005A EP0805218B1 (en) | 1996-05-03 | 1996-05-03 | Draining station and heat treatment installation comprising such a drain station |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96107005A EP0805218B1 (en) | 1996-05-03 | 1996-05-03 | Draining station and heat treatment installation comprising such a drain station |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0805218A1 true EP0805218A1 (en) | 1997-11-05 |
EP0805218B1 EP0805218B1 (en) | 2001-02-28 |
Family
ID=8222743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96107005A Expired - Lifetime EP0805218B1 (en) | 1996-05-03 | 1996-05-03 | Draining station and heat treatment installation comprising such a drain station |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0805218B1 (en) |
AT (1) | ATE199405T1 (en) |
DE (1) | DE69611905D1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006001068A1 (en) * | 2004-06-23 | 2006-01-05 | Koyo Thermo Systems Co., Ltd. | Method of quench hardening and apparatus for use therein |
CN115044765A (en) * | 2022-06-13 | 2022-09-13 | 玉环普天单向器有限公司 | Heat treatment equipment for star wheel of gearbox isolator |
Citations (4)
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 (en) * | 1987-06-03 | 1988-12-21 | Pierre Beuret | Device with several components for heat treatment |
EP0533615A1 (en) * | 1991-09-19 | 1993-03-24 | Codere Sa | Installation for the thermal treatment of successive charges |
EP0671476A1 (en) * | 1994-03-12 | 1995-09-13 | Solo Fours Industriels Sa | Heat treatment plant |
-
1996
- 1996-05-03 AT AT96107005T patent/ATE199405T1/en not_active IP Right Cessation
- 1996-05-03 DE DE69611905T patent/DE69611905D1/en not_active Expired - Lifetime
- 1996-05-03 EP EP96107005A patent/EP0805218B1/en not_active Expired - Lifetime
Patent Citations (4)
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 (en) * | 1987-06-03 | 1988-12-21 | Pierre Beuret | Device with several components for heat treatment |
EP0533615A1 (en) * | 1991-09-19 | 1993-03-24 | Codere Sa | Installation for the thermal treatment of successive charges |
EP0671476A1 (en) * | 1994-03-12 | 1995-09-13 | Solo Fours Industriels Sa | Heat treatment plant |
Non-Patent Citations (1)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006001068A1 (en) * | 2004-06-23 | 2006-01-05 | Koyo Thermo Systems Co., Ltd. | Method of quench hardening and apparatus for use therein |
CN115044765A (en) * | 2022-06-13 | 2022-09-13 | 玉环普天单向器有限公司 | Heat treatment equipment for star wheel of gearbox isolator |
Also Published As
Publication number | Publication date |
---|---|
DE69611905D1 (en) | 2001-04-05 |
ATE199405T1 (en) | 2001-03-15 |
EP0805218B1 (en) | 2001-02-28 |
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