WO2023031532A1 - Treatment of metal parts by depositing different materials in series - Google Patents

Treatment of metal parts by depositing different materials in series Download PDF

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Publication number
WO2023031532A1
WO2023031532A1 PCT/FR2022/051519 FR2022051519W WO2023031532A1 WO 2023031532 A1 WO2023031532 A1 WO 2023031532A1 FR 2022051519 W FR2022051519 W FR 2022051519W WO 2023031532 A1 WO2023031532 A1 WO 2023031532A1
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WO
WIPO (PCT)
Prior art keywords
zone
sub
layer
metal part
deposit
Prior art date
Application number
PCT/FR2022/051519
Other languages
French (fr)
Inventor
Melissa Gouault
Lionel Meslin
Marc Courteaux
Philippe Beyet
Original Assignee
Psa Automobiles 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.)
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Publication date
Application filed by Psa Automobiles Sa filed Critical Psa Automobiles Sa
Priority to CN202280059030.2A priority Critical patent/CN117916402A/en
Publication of WO2023031532A1 publication Critical patent/WO2023031532A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D

Definitions

  • TITLE TREATMENT OF METALLIC PARTS BY SUCCESSIVE DEPOSITS OF DIFFERENT MATERIALS
  • the invention relates to the treatment of metal parts.
  • treatments are carried out on certain metal parts intended to deposit a first material on a first zone of a first face.
  • this deposit can materialize in the form of a weld bead.
  • the metal part has previously been the subject of an anti-corrosion treatment by cataphoresis with a second material, such as for example zinc.
  • a second material such as for example zinc.
  • the first temperature to which this first zone is heated can cause in the latter damage, or even elimination, of the second anti-corrosion material previously deposited when the second melting temperature of this second anti-corrosion material is strictly lower than the first melting temperature.
  • the metal part is made of steel, its first melting temperature is equal to approximately 1500°C, whereas the second melting temperature of zinc is equal to approximately 420°C.
  • the aim of the invention is therefore in particular to improve the situation.
  • This treatment method is characterized in that it comprises a step in which a first material is deposited on a first zone of the first face by means of a first device having a chosen trajectory, then less on this first zone a layer of second anti-corrosion material by means of a second device following this trajectory with a chosen time lag.
  • an anti-corrosion touch-up can advantageously be carried out in each first zone which has just been the subject of a first deposit in the event that the anti-corrosion protection previously carried out has been degraded or eliminated by this first deposit.
  • the treatment method according to the invention may comprise other characteristics which may be taken separately or in combination, and in particular:
  • At least a sub-part of the first zone can be cooled before depositing the anti-corrosion layer on this cooled sub-part;
  • the first zone can be cooled continuously by continuously moving the second device, before depositing the anti-corrosion layer continuously;
  • the second zone can be cooled continuously by continuously moving the third device, before depositing the other anti-corrosion layer continuously.
  • the invention also proposes a treatment installation intended to treat a metal part comprising first and second opposite faces.
  • This treatment installation is characterized in that it comprises a first device capable of moving along a chosen path relative to the metal part in order to deposit a first material on a first zone of its first face, and a second device capable of moving along the chosen trajectory relative to the metal part in order to deposit a layer of second anti-corrosion material on this first zone, with a chosen time lag relative to the deposition of the first material.
  • the treatment installation according to the invention may comprise other characteristics which may be taken separately or in combination, and in particular:
  • Its second device can be suitable for cooling at least a sub-part of the first zone before depositing the anti-corrosion layer on this cooled sub-part;
  • - it may comprise a third device coupled in displacement to the second device to follow the trajectory relative to the metal part with the chosen time lag, in order to deposit another layer of second anti-corrosion material on a second zone of the second face, located under the first area;
  • its third device can be suitable for cooling at least a sub-part of the second zone before depositing the other anti-corrosion layer on this cooled sub-part.
  • FIG. 1 schematically and functionally illustrates, in a side view, a first embodiment of a treatment installation according to the invention, during a first phase of treatment of a metal part
  • FIG. 2 illustrates schematically and functionally, in a side view, the processing installation of Figure 1, during a second processing phase of the metal part
  • FIG. 3 illustrates schematically and functionally, in a side view, the processing installation of Figure 1, at the end of the processing of the metal part,
  • FIG. 4 illustrates schematically and functionally, in a side view, a second embodiment of a treatment installation according to the invention, during a first phase of treatment of a metal part
  • FIG. 5 illustrates schematically and functionally, in a side view, the processing installation of Figure 4, during a second phase of processing the metal part,
  • FIG. 6 illustrates schematically and functionally, in a side view, the processing installation of Figure 4, during a third phase of processing the metal part,
  • FIG. 7 illustrates schematically and functionally, in a side view, the processing installation of Figure 4, at the end of the processing of the metal part,
  • FIG. 8 schematically and functionally illustrates, in a side view, a third embodiment of a treatment installation according to the invention, during a third phase of treatment of a metal part, and
  • FIG. 9 schematically illustrates an example of an algorithm implementing a processing method according to the invention.
  • the object of the invention is in particular to propose a treatment method, and an associated IT treatment installation, intended to allow the treatment of metal parts PM, having previously undergone an anticorrosion treatment with a second material, by deposit of a first material followed immediately after by a deposition of the second anti-corrosion material to carry out anti-corrosion touch-ups.
  • the metal parts PM are steel sheets. But the invention is not limited to this type of metal part. It relates in fact to any type of metal part having previously been the subject of an anti-corrosion treatment with a second material before being the subject of a deposit of a first material then a deposit of the second anti-corrosion material to carry out anti-corrosion touch-ups.
  • the metal parts PM are intended to form part of systems constituting vehicles of the automotive type, such as cars for example.
  • PM metal parts can be fitted to any system, and in particular vehicles (land, sea (or river), and air), installations (possibly of the industrial type), and buildings.
  • the invention proposes in particular a treatment method intended to allow the treatment of metal parts PM (comprising each of the first F1 and second F2 opposite faces of which at least one has previously been the subject of a treatment anti-corrosion with a second material) by depositing a first material (having a first melting temperature) followed immediately after by depositing the second anti-corrosion material (having a second melting temperature) to perform anti-corrosion touch-ups.
  • a treatment installation IT comprises at least a first device D1 and a second device D2.
  • the first device D1 is able to move on a path chosen with respect to the metal part PM (arrow F) in order to deposit a first material on a first zone Z1 of the first face F1 of this metal part PM.
  • this deposit can materialize in the form of a weld bead. But other types of deposit can be considered.
  • the first device D1 is mounted in translation (arrow F) on a support (not shown) and may comprise means making it possible to vary the position of the place where it carries out its deposition of first material, including when it is not not move.
  • the movement of the first device D1 with respect to the metal part PM is relative, and therefore in an alternative embodiment it is the metal part PM which could be moved with respect to the first device D1 (then fixed ), but can always include means for varying the position of the place where he makes his first deposition of first material.
  • the second device D2 is able to move on the chosen trajectory with respect to the metal part PM in order to deposit a layer of second anti-corrosion material on this first zone Z1, with a time lag chosen with respect to the deposition of the first material.
  • the movements of the second device D2 are coupled to those of the first device D1 so that the second deposition of the second anticorrosion material takes place just after the first deposition of the first material.
  • the second device D2 can be fixedly secured to the first device D1 in order to follow the same (relative) trajectory as the latter (D1). It may also include means making it possible to vary the position of the place where it makes its second deposit of second material, including when it is not moving. However, in a variant embodiment, the second device D2 could comprise movement means different from those of the first device D1 and possibly mounted on a support different from that of the first device D1.
  • the second device D2 can be arranged so as to carry out a second deposition by cataphoresis (and therefore by projecting droplets GP, for example by means of a deposition nozzle BD (see FIGS. 2, 6 and 8)) .
  • the second anti-corrosion material may be zinc. But other second anti-corrosion materials could be deposited, possibly using techniques other than cataphoresis.
  • the second device D2 may comprise a body (or casing) CD comprising part of the means ensuring the cataphoresis (and in particular (here) the supply of zinc wire), and to which is attached the deposition nozzle BD responsible for generating the droplets of zinc GP from the zinc wire that feeds it.
  • the method (of treatment), according to the invention comprises a step 10-40.
  • This step 10-40 firstly comprises a sub-step 10 in which a first deposition of first material is carried out on a first zone Z1 of the first face F1 of the metal part PM by means of the first device D1 (which has a chosen trajectory (arrow F)). It will be understood that in this sub-step 10 (illustrated in FIGS. 1 and 4) the first device D1 is moved (relatively with respect to the metal part PM) and positioned in order to start its first deposition at the start of the first zone Z1 then to continue this first deposit in the first zone Z1 until the end of the latter (Z1).
  • Step 10-40 also includes a sub-step 30 in which a layer of second anti-corrosion material is deposited at least on the first zone Z1 by means of the second device D2 which follows the trajectory of the first device D1 with a chosen time lag.
  • This sub-step 30 is illustrated in Figures 2, 6 and 8. It will be understood that this time lag between the passages of the first D1 and second D2 devices at the same point of their common trajectory allows the local temperature in the first zone Z1 (strongly increased by the first deposition) to drop before the second begins. deposit. This advantageously makes it possible to carry out an anticorrosion touch-up in each first zone Z1 which has just been the subject of a first deposit in the event that the anticorrosion protection previously produced has been degraded or eliminated by this first deposit.
  • step 10-40 when the second device D2 is mechanically coupled to the first device D1, the time shift can be a function of the speed of movement of the first device D1 and of the distance separating the places where the first D1 and second devices D2 perform their respective first and second deposits.
  • step 10-40 can comprise a sub-step 40 in which the first D1 and second D2 devices are continued to be moved relatively with respect to the part metal PM after completing the second deposition of the second anticorrosion material. Then, it is possible either to carry out at least one other treatment (first and second deposits) in another first zone Z1 of the metal part PM, or to remove the metal part PM which has just been treated (first and second deposits) in order to carry out the processing of another metal part PM.
  • This sub-step 40 is illustrated in Figures 3 and 7.
  • step 10-40 can comprise a sub-step 20 in which at least a sub-portion of the first zone Z1 is cooled before deposit the layer of second anti-corrosion material on this cooled sub-part.
  • This option must be implemented when the duration of the aforementioned time lag is not long enough for the temperature in the first zone Z1 to drop substantially below the second melting temperature of the second anti-corrosion material.
  • Sub-step 20 is illustrated in Figure 5.
  • the second device D2 of the treatment installation IT may be capable of cooling at least a sub-part of the first zone Z1 before depositing the anti-corrosion layer on this cooled sub-part.
  • the second device D2 may comprise a cooling air diffuser DR interposed between the first device D1 and the deposition nozzle BD.
  • the body (or casing) CD can comprise an air generator of cooling which feeds the cooling air diffuser DR upstream of the deposition nozzle BD.
  • the first zone Z1 can be cooled continuously by continuously moving the second device D2, before depositing the anticorrosion layer continuously. In other words, everything here is done in series. Cooling begins when (or just before) the start of the first zone Z1 reaches below the cooling air diffuser DR, and continues at least until the entire first zone Z1 has passed under the cooling air diffuser DR, and the projection of droplets GP begins when (or just before) the start of the first zone Z1 (does not) reach under the deposition nozzle BD , and continues at least until the entire first zone Z1 has passed under the deposition nozzle BD.
  • step 30 of step 10-40 it is also possible to deposit on a second zone Z2 the second face F2 of the metal part PM, located under the first zone Z1, another layer of second anti-corrosion material by means of a third device D3 which is coupled in displacement to the second device D2 in order to follow the aforementioned trajectory with the chosen time shift.
  • This option must be implemented when there is a risk that the first deposit (carried out on the first face F1 ) causes in the second zone Z1 (located under the first zone Z1 ) a degradation or removal of the anti-corrosion protection previously carried out on the second face F2.
  • the third device D3 is substantially identical to the second device D2. It can be fixedly secured to the first device D1 or to the second device D2, in order to follow the same (relative) trajectory (arrow F). It may also include means making it possible to vary the position of the place where it makes its second deposit of second material, including when it is not moving. However, in a variant embodiment, the third device D3 could comprise movement means different from those of the second D2 or first device D1 and possibly mounted on a support different from that of the second D2 or first device D1.
  • the third device D3 can be arranged so as to carry out a second deposition by cataphoresis (and therefore by projecting droplets (here of zinc) GP', for example by means of a deposition nozzle BD' (see figure 8)).
  • the third device D3 may comprise a body (or casing) CD comprising a part of the means ensuring the cataphoresis (and in particular (here) the reserve of zinc wire) and to which is secured the deposition nozzle BD' responsible for generating the droplets of zinc GP' from the zinc wire which feeds it.
  • step 20 of step 10-40 it is also possible to cool at least a sub-portion of the second zone Z2 before depositing the another anti-corrosion layer on this cooled sub-part.
  • This option must be implemented when the duration of the aforementioned time lag is not long enough for the temperature in the second zone Z2 to drop substantially below the second melting temperature of the second anti-corrosion material.
  • the third device D3 comprises a cooling air diffuser DR′ placed upstream of its deposition nozzle BD′.
  • the body (or casing) CD′ may comprise a cooling air generator which supplies the cooling air diffuser DR′ upstream of the deposition nozzle BD′.
  • the second zone Z2 can be cooled continuously by continuously moving the third device D3, before depositing the other anticorrosion layer continuously.
  • Cooling begins when (or just before) the start of the second zone Z2 (does) reach (does) t under the cooling air diffuser DR ', and continues at least until the entirety of the second zone Z2 has passed under the cooling air diffuser DR′
  • the projection of droplets GP′ begins when (or just before) the start of the second zone Z2 (does) reach(n)t under the nozzle deposition BD', and continues at least until the entirety of the second zone Z2 has passed under the deposition nozzle BD'.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Coating With Molten Metal (AREA)

Abstract

The invention relates to a treatment apparatus (IT) for treating a metal part (PM) having first (F1) and second (F2) opposing faces. This apparatus (IT) comprises a first device (D1) capable of moving along a selected path with respect to the metal part (PM) in order to deposit a first material on a first zone (Z1) of the first face (F1), and a second device (D2) capable of moving along this selected path with respect to the metal part (PM) in order to deposit a layer of second anticorrosion material on this first zone (Z1) at a selected time offset with respect to the deposit of the first material.

Description

DESCRIPTION DESCRIPTION
TITRE : TRAITEMENT DE PIÈCES MÉTALLIQUES PAR DÉPÔTS SUCCESSIFS DE MATIÈRES DIFFÉRENTES TITLE: TREATMENT OF METALLIC PARTS BY SUCCESSIVE DEPOSITS OF DIFFERENT MATERIALS
La présente invention revendique la priorité de la demande française 2109009 déposée le 30 août 2021 , dont le contenu (texte, dessins et revendications) est ici incorporé par référence. The present invention claims the priority of French application 2109009 filed on August 30, 2021, the content of which (text, drawings and claims) is incorporated herein by reference.
Domaine technique de l’invention Technical field of the invention
L’invention concerne le traitement de pièces métalliques. The invention relates to the treatment of metal parts.
Etat de la technique State of the art
Dans certains domaines techniques, comme par exemple celui des véhicules (éventuellement automobiles), on effectue sur certaines pièces métalliques des traitements destinés à réaliser un dépôt d’une première matière sur une première zone d’une première face. Par exemple et non limitativement, ce dépôt peut se matérialiser sous la forme d’un cordon de soudure. In certain technical fields, such as for example that of vehicles (possibly automobiles), treatments are carried out on certain metal parts intended to deposit a first material on a first zone of a first face. For example and non-limitingly, this deposit can materialize in the form of a weld bead.
Parfois, avant de faire l’objet d’un dépôt de première matière, la pièce métallique a préalablement fait l’objet d’un traitement anticorrosion par cataphorèse avec une seconde matière, comme par exemple du zinc. Or, lors du dépôt de la première matière dans une première zone d’une pièce métallique, la première température à laquelle est chauffée cette première zone peut provoquer dans cette dernière un endommagement, voire une suppression, de la seconde matière anticorrosion préalablement déposée lorsque la seconde température de fusion de cette seconde matière anticorrosion est strictement inférieure à la première température de fusion. Par exemple, lorsque la pièce métallique est en acier sa première température de fusion est égale à environ 1500°C, alors que la seconde température de fusion du zinc est égale à environ 420°C. Sometimes, before being the subject of a deposition of the first material, the metal part has previously been the subject of an anti-corrosion treatment by cataphoresis with a second material, such as for example zinc. However, during the deposition of the first material in a first zone of a metal part, the first temperature to which this first zone is heated can cause in the latter damage, or even elimination, of the second anti-corrosion material previously deposited when the second melting temperature of this second anti-corrosion material is strictly lower than the first melting temperature. For example, when the metal part is made of steel, its first melting temperature is equal to approximately 1500°C, whereas the second melting temperature of zinc is equal to approximately 420°C.
En présence d’un tel endommagement ou d’une telle suppression, on est contraint d’effectuer des retouches anticorrosion ultérieurement et avec une installation de traitement qui est notablement différente de celle initialement utilisée pour réaliser le traitement anticorrosion initial du fait qu’elle n’a plus à réaliser de nombreuses sous- étapes d’un traitement anticorrosion complet indispensables pour une pièce métallique « brute ». La nécessité d’utiliser deux installations de traitement anticorrosion dans deux postes différents augmente les coûts de fabrication des systèmes comprenant les pièces métalliques traitées, mais aussi augmente le nombre d’opérations devant être supervisées par des techniciens, ce qui augmente encore plus les coûts de fabrication. Par ailleurs, certaines retouches anticorrosion ne peuvent être réalisées qu’une fois les pièces métalliques traitées et conformées (par exemple par découpe et/ou emboutissage), voire assemblées à d’autres pièces métalliques. Or, certaines zones traitées et devant être retouchées peuvent se retrouver placées dans ce que l’homme de l’art appelle des « corps creux » où elles sont inaccessibles à l’installation de retouche anticorrosion. In the presence of such damage or such removal, one is forced to carry out anti-corrosion touch-ups later and with a treatment installation which is notably different from that initially used to carry out the initial anti-corrosion treatment because it does not You no longer have to carry out many sub-steps of a complete anti-corrosion treatment that are essential for a “raw” metal part. The need to use two anti-corrosion treatment facilities in two different positions increases the manufacturing costs of the systems comprising the treated metal parts, but also increases the number of operations that must be supervised by technicians, which further increases the manufacturing costs. Furthermore, some anti-corrosion retouching can only be carried out once the metal parts have been treated and shaped (for example by cutting and/or stamping), or even assembled with other metal parts. However, certain areas treated and needing to be touched up may find themselves placed in what those skilled in the art call “hollow bodies” where they are inaccessible to the anticorrosion touch-up installation.
L’invention a donc notamment pour but d’améliorer la situation. The aim of the invention is therefore in particular to improve the situation.
Présentation de l’invention Presentation of the invention
Elle propose notamment à cet effet un procédé de traitement destiné à traiter une pièce métallique comprenant des première et seconde faces opposées. It proposes in particular for this purpose a treatment method intended to treat a metal part comprising first and second opposite faces.
Ce procédé de traitement se caractérise par le fait qu’il comprend une étape dans laquelle on réalise un dépôt d’une première matière sur une première zone de la première face au moyen d’un premier dispositif ayant une trajectoire choisie, puis on dépose au moins sur cette première zone une couche de seconde matière anticorrosion au moyen d’un deuxième dispositif suivant cette trajectoire avec un décalage temporel choisi. This treatment method is characterized in that it comprises a step in which a first material is deposited on a first zone of the first face by means of a first device having a chosen trajectory, then less on this first zone a layer of second anti-corrosion material by means of a second device following this trajectory with a chosen time lag.
Ainsi, on peut avantageusement effectuer une retouche anticorrosion dans chaque première zone venant de faire l’objet d’un premier dépôt au cas où la protection anticorrosion préalablement réalisée aurait été dégradée ou supprimée par ce premier dépôt. Thus, an anti-corrosion touch-up can advantageously be carried out in each first zone which has just been the subject of a first deposit in the event that the anti-corrosion protection previously carried out has been degraded or eliminated by this first deposit.
Le procédé de traitement selon l’invention peut comporter d’autres caractéristiques qui peuvent être prises séparément ou en combinaison, et notamment : The treatment method according to the invention may comprise other characteristics which may be taken separately or in combination, and in particular:
- dans son étape on peut effectuer un refroidissement d’au moins une sous-partie de la première zone avant de déposer la couche anticorrosion sur cette sous-partie refroidie ;- in its step, at least a sub-part of the first zone can be cooled before depositing the anti-corrosion layer on this cooled sub-part;
- en présence de la première option, dans son étape on peut refroidir de façon continue la première zone par un déplacement continu du deuxième dispositif, avant de déposer la couche anticorrosion de façon continue ; - in the presence of the first option, in its step, the first zone can be cooled continuously by continuously moving the second device, before depositing the anti-corrosion layer continuously;
- dans son étape on peut déposer sur une seconde zone de la seconde face, située sous la première zone, une autre couche de seconde matière anticorrosion au moyen d’un troisième dispositif couplé en déplacement au deuxième dispositif afin de suivre la trajectoire avec le décalage temporel choisi ; - en présence de la dernière option, dans son étape on peut effectuer un refroidissement d’au moins une sous-partie de la seconde zone avant de déposer l’autre couche anticorrosion sur cette sous-partie refroidie ; - in its step, it is possible to deposit on a second zone of the second face, located under the first zone, another layer of second anti-corrosion material by means of a third device coupled in displacement to the second device in order to follow the trajectory with the offset time chosen; - in the presence of the last option, in its step, at least one sub-part of the second zone can be cooled before depositing the other anti-corrosion layer on this cooled sub-part;
- en présence de la dernière sous-option, dans son étape on peut refroidir de façon continue la seconde zone par un déplacement continu du troisième dispositif, avant de déposer l’autre couche anticorrosion de façon continue. - in the presence of the last sub-option, in its step, the second zone can be cooled continuously by continuously moving the third device, before depositing the other anti-corrosion layer continuously.
L’invention propose également une installation de traitement destinée à traiter une pièce métallique comprenant des première et seconde faces opposées. The invention also proposes a treatment installation intended to treat a metal part comprising first and second opposite faces.
Cette installation de traitement se caractérise par le fait qu’elle comprend un premier dispositif propre à se déplacer sur une trajectoire choisie par rapport à la pièce métallique afin de réaliser un dépôt d’une première matière sur une première zone de sa première face, et un deuxième dispositif propre à se déplacer sur la trajectoire choisie par rapport à la pièce métallique afin de déposer une couche de seconde matière anticorrosion sur cette première zone, avec un décalage temporel choisi par rapport au dépôt de la première matière. This treatment installation is characterized in that it comprises a first device capable of moving along a chosen path relative to the metal part in order to deposit a first material on a first zone of its first face, and a second device capable of moving along the chosen trajectory relative to the metal part in order to deposit a layer of second anti-corrosion material on this first zone, with a chosen time lag relative to the deposition of the first material.
L’installation de traitement selon l’invention peut comporter d’autres caractéristiques qui peuvent être prises séparément ou en combinaison, et notamment : The treatment installation according to the invention may comprise other characteristics which may be taken separately or in combination, and in particular:
- son deuxième dispositif peut être propre à refroidir au moins une sous-partie de la première zone avant de déposer la couche anticorrosion sur cette sous-partie refroidie ;- Its second device can be suitable for cooling at least a sub-part of the first zone before depositing the anti-corrosion layer on this cooled sub-part;
- elle peut comprendre un troisième dispositif couplé en déplacement au deuxième dispositif pour suivre la trajectoire par rapport à la pièce métallique avec le décalage temporel choisi, afin de déposer une autre couche de seconde matière anticorrosion sur une seconde zone de la seconde face, située sous la première zone ; - it may comprise a third device coupled in displacement to the second device to follow the trajectory relative to the metal part with the chosen time lag, in order to deposit another layer of second anti-corrosion material on a second zone of the second face, located under the first area;
- en présence de la dernière option, son troisième dispositif peut être propre à refroidir au moins une sous-partie de la seconde zone avant de déposer l’autre couche anticorrosion sur cette sous-partie refroidie. - in the presence of the last option, its third device can be suitable for cooling at least a sub-part of the second zone before depositing the other anti-corrosion layer on this cooled sub-part.
Brève description des figures Brief description of figures
D’autres caractéristiques et avantages de l’invention apparaîtront à l’examen de la description détaillée ci-après, et des dessins annexés, sur lesquels : Other characteristics and advantages of the invention will appear on examination of the detailed description below, and of the appended drawings, in which:
[Fig. 1] illustre schématiquement et fonctionnellement, dans une vue de côté, un premier exemple de réalisation d’une installation de traitement selon l’invention, pendant une première phase de traitement d’une pièce métallique, [Fig. 2] illustre schématiquement et fonctionnellement, dans une vue de côté, l’installation de traitement de la figure 1 , pendant une deuxième phase de traitement de la pièce métallique, [Fig. 1] schematically and functionally illustrates, in a side view, a first embodiment of a treatment installation according to the invention, during a first phase of treatment of a metal part, [Fig. 2] illustrates schematically and functionally, in a side view, the processing installation of Figure 1, during a second processing phase of the metal part,
[Fig. 3] illustre schématiquement et fonctionnellement, dans une vue de côté, l’installation de traitement de la figure 1 , à la fin du traitement de la pièce métallique, [Fig. 3] illustrates schematically and functionally, in a side view, the processing installation of Figure 1, at the end of the processing of the metal part,
[Fig. 4] illustre schématiquement et fonctionnellement, dans une vue de côté, un deuxième exemple de réalisation d’une installation de traitement selon l’invention, pendant une première phase de traitement d’une pièce métallique, [Fig. 4] illustrates schematically and functionally, in a side view, a second embodiment of a treatment installation according to the invention, during a first phase of treatment of a metal part,
[Fig. 5] illustre schématiquement et fonctionnellement, dans une vue de côté, l’installation de traitement de la figure 4, pendant une deuxième phase de traitement de la pièce métallique, [Fig. 5] illustrates schematically and functionally, in a side view, the processing installation of Figure 4, during a second phase of processing the metal part,
[Fig. 6] illustre schématiquement et fonctionnellement, dans une vue de côté, l’installation de traitement de la figure 4, pendant une troisième phase de traitement de la pièce métallique, [Fig. 6] illustrates schematically and functionally, in a side view, the processing installation of Figure 4, during a third phase of processing the metal part,
[Fig. 7] illustre schématiquement et fonctionnellement, dans une vue de côté, l’installation de traitement de la figure 4, à la fin du traitement de la pièce métallique, [Fig. 7] illustrates schematically and functionally, in a side view, the processing installation of Figure 4, at the end of the processing of the metal part,
[Fig. 8] illustre schématiquement et fonctionnellement, dans une vue de côté, un troisième exemple de réalisation d’une installation de traitement selon l’invention, pendant une troisième phase de traitement d’une pièce métallique, et [Fig. 8] schematically and functionally illustrates, in a side view, a third embodiment of a treatment installation according to the invention, during a third phase of treatment of a metal part, and
[Fig. 9] illustre schématiquement un exemple d’algorithme mettant en œuvre un procédé de traitement selon l’invention. [Fig. 9] schematically illustrates an example of an algorithm implementing a processing method according to the invention.
Description détaillée de l’invention Detailed description of the invention
L’invention a notamment pour but de proposer un procédé de traitement, et une installation de traitement IT associée, destinés à permettre le traitement de pièces métalliques PM, ayant préalablement fait l’objet d’un traitement anticorrosion avec une seconde matière, par dépôt d’une première matière suivi juste après d’un dépôt de la seconde matière anticorrosion pour effectuer des retouches anticorrosion. The object of the invention is in particular to propose a treatment method, and an associated IT treatment installation, intended to allow the treatment of metal parts PM, having previously undergone an anticorrosion treatment with a second material, by deposit of a first material followed immediately after by a deposition of the second anti-corrosion material to carry out anti-corrosion touch-ups.
Dans ce qui suit, on considère, à titre d’exemple non limitatif, que les pièces métalliques PM sont des tôles en acier. Mais l’invention n’est pas limitée à ce type de pièce métallique. Elle concerne en effet tout type de pièce métallique ayant préalablement fait l’objet d’un traitement anticorrosion avec une seconde matière avant de faire l’objet d’un dépôt d’une première matière puis d’un dépôt de la seconde matière anticorrosion pour effectuer des retouches anticorrosion. In what follows, it is considered, by way of non-limiting example, that the metal parts PM are steel sheets. But the invention is not limited to this type of metal part. It relates in fact to any type of metal part having previously been the subject of an anti-corrosion treatment with a second material before being the subject of a deposit of a first material then a deposit of the second anti-corrosion material to carry out anti-corrosion touch-ups.
Par ailleurs, on considère dans ce qui suit, à titre d’exemple non limitatif, que les pièces métalliques PM sont destinées à faire partie de systèmes constituant des véhicules de type automobile, comme par exemple des voitures. Mais les pièces métalliques PM peuvent équiper tout système, et notamment les véhicules (terrestres, maritimes (ou fluviaux), et aériens), les installations (éventuellement de type industriel), et les bâtiments.Furthermore, it is considered in what follows, by way of non-limiting example, that the metal parts PM are intended to form part of systems constituting vehicles of the automotive type, such as cars for example. But PM metal parts can be fitted to any system, and in particular vehicles (land, sea (or river), and air), installations (possibly of the industrial type), and buildings.
Comme évoqué plus haut, l’invention propose notamment un procédé de traitement destiné à permettre le traitement de pièces métalliques PM (comprenant chacune des première F1 et seconde F2 faces opposées dont l’une au moins a préalablement fait l’objet d’un traitement anticorrosion avec une seconde matière) par dépôt d’une première matière (ayant une première température de fusion) suivi juste après d’un dépôt de la seconde matière anticorrosion (ayant une seconde température de fusion) pour effectuer des retouches anticorrosion. As mentioned above, the invention proposes in particular a treatment method intended to allow the treatment of metal parts PM (comprising each of the first F1 and second F2 opposite faces of which at least one has previously been the subject of a treatment anti-corrosion with a second material) by depositing a first material (having a first melting temperature) followed immediately after by depositing the second anti-corrosion material (having a second melting temperature) to perform anti-corrosion touch-ups.
Ce procédé (de traitement) peut être mis en œuvre par une installation de traitement IT du type de celles illustrées sur les figures 1 à 8. Comme illustré une installation de traitement IT, selon l’invention, comprend au moins un premier dispositif D1 et un deuxième dispositif D2. This (treatment) method can be implemented by a treatment installation IT of the type illustrated in FIGS. 1 to 8. As illustrated, a treatment installation IT, according to the invention, comprises at least a first device D1 and a second device D2.
Le premier dispositif D1 est propre à se déplacer sur une trajectoire choisie par rapport à la pièce métallique PM (flèche F) afin de réaliser un dépôt d’une première matière sur une première zone Z1 de la première face F1 de cette pièce métallique PM. Par exemple et non limitativement, ce dépôt peut se matérialiser sous la forme d’un cordon de soudure. Mais d’autres types de dépôt peuvent être envisagés. The first device D1 is able to move on a path chosen with respect to the metal part PM (arrow F) in order to deposit a first material on a first zone Z1 of the first face F1 of this metal part PM. For example and non-limitingly, this deposit can materialize in the form of a weld bead. But other types of deposit can be considered.
Par exemple, le premier dispositif D1 est monté en translation (flèche F) sur un support (non illustré) et peut comprendre des moyens permettant de faire varier la position du lieu où il réalise son dépôt de première matière, y compris lorsqu’il ne se déplace pas. For example, the first device D1 is mounted in translation (arrow F) on a support (not shown) and may comprise means making it possible to vary the position of the place where it carries out its deposition of first material, including when it is not not move.
On notera que le déplacement du premier dispositif D1 par rapport à la pièce métallique PM (flèche F) est relatif, et donc dans une variante de réalisation c’est la pièce métallique PM qui pourrait être déplacée par rapport au premier dispositif D1 (alors fixe), mais pouvant toujours comprendre des moyens permettant de faire varier la position du lieu où il réalise son premier dépôt de première matière. It will be noted that the movement of the first device D1 with respect to the metal part PM (arrow F) is relative, and therefore in an alternative embodiment it is the metal part PM which could be moved with respect to the first device D1 (then fixed ), but can always include means for varying the position of the place where he makes his first deposition of first material.
Le deuxième dispositif D2 est propre à se déplacer sur la trajectoire choisie par rapport à la pièce métallique PM afin de déposer une couche de seconde matière anticorrosion sur cette première zone Z1 , avec un décalage temporel choisi par rapport au dépôt de la première matière. En d’autres termes, les déplacements du deuxième dispositif D2 sont couplés à ceux du premier dispositif D1 afin que le second dépôt de la seconde matière anticorrosion se fasse juste après le premier dépôt de la première matière. The second device D2 is able to move on the chosen trajectory with respect to the metal part PM in order to deposit a layer of second anti-corrosion material on this first zone Z1, with a time lag chosen with respect to the deposition of the first material. In other words, the movements of the second device D2 are coupled to those of the first device D1 so that the second deposition of the second anticorrosion material takes place just after the first deposition of the first material.
Par exemple, le deuxième dispositif D2 peut être solidarisé fixement au premier dispositif D1 afin de suivre la même trajectoire (relative) que ce dernier (D1 ). Il peut aussi comprendre des moyens permettant de faire varier la position du lieu où il réalise son second dépôt de seconde matière, y compris lorsqu’il ne se déplace pas. Mais dans une variante de réalisation le deuxième dispositif D2 pourrait comprendre des moyens de déplacement différents de ceux du premier dispositif D1 et éventuellement montés sur un support différent de celui du premier dispositif D1 . For example, the second device D2 can be fixedly secured to the first device D1 in order to follow the same (relative) trajectory as the latter (D1). It may also include means making it possible to vary the position of the place where it makes its second deposit of second material, including when it is not moving. However, in a variant embodiment, the second device D2 could comprise movement means different from those of the first device D1 and possibly mounted on a support different from that of the first device D1.
Egalement par exemple, le deuxième dispositif D2 peut être agencé de manière à réaliser un second dépôt par cataphorèse (et donc en projetant des gouttelettes GP, par exemple au moyen d’une buse de dépôt BD (voir figures 2, 6 et 8)). Dans ce cas, la seconde matière anticorrosion peut être du zinc. Mais d’autres secondes matières anticorrosion pourraient être déposées, éventuellement selon d’autres techniques que la cataphorèse.Also for example, the second device D2 can be arranged so as to carry out a second deposition by cataphoresis (and therefore by projecting droplets GP, for example by means of a deposition nozzle BD (see FIGS. 2, 6 and 8)) . In this case, the second anti-corrosion material may be zinc. But other second anti-corrosion materials could be deposited, possibly using techniques other than cataphoresis.
Le deuxième dispositif D2 peut comprendre un corps (ou boîtier) CD comprenant une partie des moyens assurant la cataphorèse (et notamment (ici) la réserve de fil de zinc), et auquel est solidarisée la buse de dépôt BD chargée de générer les gouttelettes de zinc GP à partir du fil de zinc qui l’alimente. The second device D2 may comprise a body (or casing) CD comprising part of the means ensuring the cataphoresis (and in particular (here) the supply of zinc wire), and to which is attached the deposition nozzle BD responsible for generating the droplets of zinc GP from the zinc wire that feeds it.
Comme illustré non limitativement sur la figure 9, le procédé (de traitement), selon l’invention, comprend une étape 10-40. As illustrated without limitation in Figure 9, the method (of treatment), according to the invention, comprises a step 10-40.
Cette étape 10-40 comprend tout d’abord une sous-étape 10 dans laquelle on réalise un premier dépôt de première matière sur une première zone Z1 de la première face F1 de la pièce métallique PM au moyen du premier dispositif D1 (qui a une trajectoire choisie (flèche F)). On comprendra que dans cette sous-étape 10 (illustrée sur les figures 1 et 4) le premier dispositif D1 est déplacé (relativement par rapport à la pièce métallique PM) et positionné afin de débuter son premier dépôt au début de la première zone Z1 puis de poursuivre ce premier dépôt dans la première zone Z1 jusqu’à la fin de cette dernière (Z1 ). L’étape 10-40 comprend aussi une sous-étape 30 dans laquelle on dépose au moins sur la première zone Z1 une couche de seconde matière anticorrosion au moyen du deuxième dispositif D2 qui suit la trajectoire du premier dispositif D1 avec un décalage temporel choisi. Cette sous-étape 30 est illustrée sur les figures 2, 6 et 8. On comprendra que ce décalage temporel entre les passages des premier D1 et deuxième D2 dispositifs en un même point de leur trajectoire commune permet à la température locale dans la première zone Z1 (fortement augmentée par le premier dépôt) de baisser avant que ne commence le second dépôt. Cela permet avantageusement d’effectuer une retouche anticorrosion dans chaque première zone Z1 venant de faire l’objet d’un premier dépôt au cas où la protection anticorrosion préalablement réalisée aurait été dégradée ou supprimée par ce premier dépôt. This step 10-40 firstly comprises a sub-step 10 in which a first deposition of first material is carried out on a first zone Z1 of the first face F1 of the metal part PM by means of the first device D1 (which has a chosen trajectory (arrow F)). It will be understood that in this sub-step 10 (illustrated in FIGS. 1 and 4) the first device D1 is moved (relatively with respect to the metal part PM) and positioned in order to start its first deposition at the start of the first zone Z1 then to continue this first deposit in the first zone Z1 until the end of the latter (Z1). Step 10-40 also includes a sub-step 30 in which a layer of second anti-corrosion material is deposited at least on the first zone Z1 by means of the second device D2 which follows the trajectory of the first device D1 with a chosen time lag. This sub-step 30 is illustrated in Figures 2, 6 and 8. It will be understood that this time lag between the passages of the first D1 and second D2 devices at the same point of their common trajectory allows the local temperature in the first zone Z1 (strongly increased by the first deposition) to drop before the second begins. deposit. This advantageously makes it possible to carry out an anticorrosion touch-up in each first zone Z1 which has just been the subject of a first deposit in the event that the anticorrosion protection previously produced has been degraded or eliminated by this first deposit.
On notera que dans l’étape 10-40, lorsque le deuxième dispositif D2 est couplé mécaniquement au premier dispositif D1 , le décalage temporel peut être fonction de la vitesse de déplacement du premier dispositif D1 et de la distance séparant les lieux où les premier D1 et deuxième D2 dispositifs réalisent leurs premier et second dépôts respectifs.It will be noted that in step 10-40, when the second device D2 is mechanically coupled to the first device D1, the time shift can be a function of the speed of movement of the first device D1 and of the distance separating the places where the first D1 and second devices D2 perform their respective first and second deposits.
On notera également, comme illustré non limitativement sur les figures 3, 7 et 9, que l’étape 10-40 peut comprendre une sous-étape 40 dans laquelle on continue de déplacer les premier D1 et deuxième D2 dispositifs relativement par rapport à la pièce métallique PM après avoir terminé le second dépôt de la seconde matière anticorrosion. Ensuite, on peut soit réaliser au moins un autre traitement (premier et second dépôts) dans une autre première zone Z1 de la pièce métallique PM, soit retirer la pièce métallique PM venant d’être traitée (premier et second dépôts) afin de procéder au traitement d’une autre pièce métallique PM. Cette sous-étape 40 est illustrée sur les figures 3 et 7. It will also be noted, as illustrated without limitation in FIGS. 3, 7 and 9, that step 10-40 can comprise a sub-step 40 in which the first D1 and second D2 devices are continued to be moved relatively with respect to the part metal PM after completing the second deposition of the second anticorrosion material. Then, it is possible either to carry out at least one other treatment (first and second deposits) in another first zone Z1 of the metal part PM, or to remove the metal part PM which has just been treated (first and second deposits) in order to carry out the processing of another metal part PM. This sub-step 40 is illustrated in Figures 3 and 7.
On notera également, comme illustré non limitativement sur les figures 5 et 9, que l’étape 10-40 peut comprendre une sous-étape 20 dans laquelle on effectue un refroidissement d’au moins une sous-partie de la première zone Z1 avant de déposer la couche de seconde matière anticorrosion sur cette sous-partie refroidie. Cette option doit être mise en œuvre lorsque la durée du décalage temporel précité n’est pas suffisamment longue pour que la température dans la première zone Z1 soit redescendue sensiblement en- dessous de la seconde température de fusion de la seconde matière anticorrosion. La sous-étape 20 est illustrée sur la figure 5. It will also be noted, as illustrated without limitation in FIGS. 5 and 9, that step 10-40 can comprise a sub-step 20 in which at least a sub-portion of the first zone Z1 is cooled before deposit the layer of second anti-corrosion material on this cooled sub-part. This option must be implemented when the duration of the aforementioned time lag is not long enough for the temperature in the first zone Z1 to drop substantially below the second melting temperature of the second anti-corrosion material. Sub-step 20 is illustrated in Figure 5.
Cette option nécessite que le deuxième dispositif D2 de l’installation de traitement IT soit propre à refroidir au moins une sous-partie de la première zone Z1 avant de déposer la couche anticorrosion sur cette sous-partie refroidie. A cet effet, et comme illustré non limitativement sur les figures 4 à 8, le deuxième dispositif D2 peut comprendre un diffuseur d’air de refroidissement DR intercalé entre le premier dispositif D1 et la buse de dépôt BD. Dans ce cas, le corps (ou boîtier) CD peut comprendre un générateur d’air de refroidissement qui alimente le diffuseur d’air de refroidissement DR en amont de la buse de dépôt BD. This option requires the second device D2 of the treatment installation IT to be capable of cooling at least a sub-part of the first zone Z1 before depositing the anti-corrosion layer on this cooled sub-part. To this end, and as illustrated without limitation in FIGS. 4 to 8, the second device D2 may comprise a cooling air diffuser DR interposed between the first device D1 and the deposition nozzle BD. In this case, the body (or casing) CD can comprise an air generator of cooling which feeds the cooling air diffuser DR upstream of the deposition nozzle BD.
Par exemple, dans l’étape 10-40 on peut refroidir de façon continue la première zone Z1 par un déplacement continu du deuxième dispositif D2, avant de déposer la couche anticorrosion de façon continue. En d’autres termes, tout se fait ici en série. Le refroidissement débute lorsque (ou juste avant que) le début de la première zone Z1 (ne) parvien(nen)t sous le diffuseur d’air de refroidissement DR, et se poursuit au moins jusqu’à ce que l’intégralité de la première zone Z1 soit passée sous le diffuseur d’air de refroidissement DR, et la projection de gouttelettes GP débute lorsque (ou juste avant que) le début de la première zone Z1 (ne) parvien(nen)t sous la buse de dépôt BD, et se poursuit au moins jusqu’à ce que l’intégralité de la première zone Z1 soit passée sous la buse de dépôt BD. For example, in step 10-40, the first zone Z1 can be cooled continuously by continuously moving the second device D2, before depositing the anticorrosion layer continuously. In other words, everything here is done in series. Cooling begins when (or just before) the start of the first zone Z1 reaches below the cooling air diffuser DR, and continues at least until the entire first zone Z1 has passed under the cooling air diffuser DR, and the projection of droplets GP begins when (or just before) the start of the first zone Z1 (does not) reach under the deposition nozzle BD , and continues at least until the entire first zone Z1 has passed under the deposition nozzle BD.
On notera également, comme illustré non limitativement sur les figures 8 et 9, que dans la sous-étape 30 de l’étape 10-40 on peut aussi déposer sur une seconde zone Z2 de la seconde face F2 de la pièce métallique PM, située sous la première zone Z1 , une autre couche de seconde matière anticorrosion au moyen d’un troisième dispositif D3 qui est couplé en déplacement au deuxième dispositif D2 afin de suivre la trajectoire précitée avec le décalage temporel choisi. Cette option doit être mise en œuvre lorsqu’il y a un risque que le premier dépôt (réalisé sur la première face F1 ) occasionne dans la seconde zone Z1 (située sous la première zone Z1 ) une dégradation ou suppression de la protection anticorrosion préalablement réalisée sur la seconde face F2. It will also be noted, as illustrated without limitation in FIGS. 8 and 9, that in sub-step 30 of step 10-40 it is also possible to deposit on a second zone Z2 the second face F2 of the metal part PM, located under the first zone Z1, another layer of second anti-corrosion material by means of a third device D3 which is coupled in displacement to the second device D2 in order to follow the aforementioned trajectory with the chosen time shift. This option must be implemented when there is a risk that the first deposit (carried out on the first face F1 ) causes in the second zone Z1 (located under the first zone Z1 ) a degradation or removal of the anti-corrosion protection previously carried out on the second face F2.
On notera que le troisième dispositif D3 est sensiblement identique au deuxième dispositif D2. Il peut être solidarisé fixement au premier dispositif D1 ou au deuxième dispositif D2, afin de suivre la même trajectoire (relative) (flèche F). Il peut aussi comprendre des moyens permettant de faire varier la position du lieu où il réalise son second dépôt de seconde matière, y compris lorsqu’il ne se déplace pas. Mais dans une variante de réalisation le troisième dispositif D3 pourrait comprendre des moyens de déplacement différents de ceux du deuxième D2 ou premier D1 dispositif et éventuellement montés sur un support différent de celui du deuxième D2 ou premier D1 dispositif. It will be noted that the third device D3 is substantially identical to the second device D2. It can be fixedly secured to the first device D1 or to the second device D2, in order to follow the same (relative) trajectory (arrow F). It may also include means making it possible to vary the position of the place where it makes its second deposit of second material, including when it is not moving. However, in a variant embodiment, the third device D3 could comprise movement means different from those of the second D2 or first device D1 and possibly mounted on a support different from that of the second D2 or first device D1.
Egalement par exemple, le troisième dispositif D3 peut être agencé de manière à réaliser un second dépôt par cataphorèse (et donc en projetant des gouttelettes (ici de zinc) GP’, par exemple au moyen d’une buse de dépôt BD’ (voir figure 8)). Also for example, the third device D3 can be arranged so as to carry out a second deposition by cataphoresis (and therefore by projecting droplets (here of zinc) GP', for example by means of a deposition nozzle BD' (see figure 8)).
Le troisième dispositif D3 peut comprendre un corps (ou boîtier) CD comprenant une partie des moyens assurant la cataphorèse (et notamment (ici) la réserve de fil de zinc) et auquel est solidarisée la buse de dépôt BD’ chargée de générer les gouttelettes de zinc GP’ à partir du fil de zinc qui l’alimente. The third device D3 may comprise a body (or casing) CD comprising a part of the means ensuring the cataphoresis (and in particular (here) the reserve of zinc wire) and to which is secured the deposition nozzle BD' responsible for generating the droplets of zinc GP' from the zinc wire which feeds it.
On notera également, comme illustré non limitativement sur la figure 8, que dans la sous- étape 20 de l’étape 10-40 on peut aussi effectuer un refroidissement d’au moins une sous- partie de la seconde zone Z2 avant de déposer l’autre couche anticorrosion sur cette sous-partie refroidie. Cette option doit être mise en œuvre lorsque la durée du décalage temporel précité n’est pas suffisamment longue pour que la température dans la seconde zone Z2 soit redescendue sensiblement en-dessous de la seconde température de fusion de la seconde matière anticorrosion. It will also be noted, as illustrated without limitation in FIG. 8, that in sub-step 20 of step 10-40, it is also possible to cool at least a sub-portion of the second zone Z2 before depositing the another anti-corrosion layer on this cooled sub-part. This option must be implemented when the duration of the aforementioned time lag is not long enough for the temperature in the second zone Z2 to drop substantially below the second melting temperature of the second anti-corrosion material.
Cette option nécessite, comme illustré non limitativement sur la figure 8, que le troisième dispositif D3 comprenne un diffuseur d’air de refroidissement DR’ placé en amont de sa buse de dépôt BD’. Dans ce cas, le corps (ou boîtier) CD’ peut comprendre un générateur d’air de refroidissement qui alimente le diffuseur d’air de refroidissement DR’ en amont de la buse de dépôt BD’. This option requires, as illustrated without limitation in FIG. 8, that the third device D3 comprises a cooling air diffuser DR′ placed upstream of its deposition nozzle BD′. In this case, the body (or casing) CD′ may comprise a cooling air generator which supplies the cooling air diffuser DR′ upstream of the deposition nozzle BD′.
Par exemple, dans l’étape 10-40 on peut refroidir de façon continue la seconde zone Z2 par un déplacement continu du troisième dispositif D3, avant de déposer l’autre couche anticorrosion de façon continue. En d’autres termes, tout se fait ici en série. Le refroidissement débute lorsque (ou juste avant que) le début de la seconde zone Z2 (ne) parvien(nen)t sous le diffuseur d’air de refroidissement DR’, et se poursuit au moins jusqu’à ce que l’intégralité de la seconde zone Z2 soit passée sous le diffuseur d’air de refroidissement DR’, et la projection de gouttelettes GP’ débute lorsque (ou juste avant que) le début de la seconde zone Z2 (ne) parvien(nen)t sous la buse de dépôt BD’, et se poursuit au moins jusqu’à ce que l’intégralité de la seconde zone Z2 soit passée sous la buse de dépôt BD’. For example, in step 10-40, the second zone Z2 can be cooled continuously by continuously moving the third device D3, before depositing the other anticorrosion layer continuously. In other words, everything here is done in series. Cooling begins when (or just before) the start of the second zone Z2 (does) reach (does) t under the cooling air diffuser DR ', and continues at least until the entirety of the second zone Z2 has passed under the cooling air diffuser DR′, and the projection of droplets GP′ begins when (or just before) the start of the second zone Z2 (does) reach(n)t under the nozzle deposition BD', and continues at least until the entirety of the second zone Z2 has passed under the deposition nozzle BD'.

Claims

REVENDICATIONS
1. Procédé de traitement d’une pièce métallique (PM) comprenant des première (F1 ) et seconde (F2) faces opposées, caractérisé en ce qu’il comprend une étape (10-40) dans laquelle on réalise un dépôt d’une première matière sur une première zone (Z1 ) de ladite première face (F1 ) au moyen d’un premier dispositif (D1 ) ayant une trajectoire choisie, puis on dépose au moins sur cette première zone (Z1 ) une couche de seconde matière anticorrosion au moyen d’un deuxième dispositif (D2) suivant cette trajectoire avec un décalage temporel choisi. 1. Method for treating a metal part (PM) comprising first (F1) and second (F2) opposite faces, characterized in that it comprises a step (10-40) in which a deposit of a first material on a first zone (Z1) of said first face (F1) by means of a first device (D1) having a chosen trajectory, then a layer of second anti-corrosion material is deposited at least on this first zone (Z1) means of a second device (D2) following this trajectory with a chosen time shift.
2. Procédé selon la revendication 1 , caractérisé en ce que dans ladite étape (10-40) on effectue un refroidissement d’au moins une sous-partie de ladite première zone (Z1 ) avant de déposer ladite couche sur cette sous-partie refroidie. 2. Method according to claim 1, characterized in that in said step (10-40) at least a sub-portion of said first zone (Z1) is cooled before depositing said layer on this cooled sub-portion .
3. Procédé selon la revendication 2, caractérisé en ce que dans ladite étape (10-40) on refroidit de façon continue ladite première zone (Z1 ) par un déplacement continu dudit deuxième dispositif (D2), avant de déposer ladite couche de façon continue. 3. Method according to claim 2, characterized in that in said step (10-40) said first zone (Z1) is continuously cooled by continuously moving said second device (D2), before depositing said layer continuously. .
4. Procédé selon l’une des revendications 1 à 3, caractérisé en ce que dans ladite étape (10-40) on dépose sur une seconde zone (Z2) de ladite seconde face (F2), située sous ladite première zone (Z1 ), une autre couche de seconde matière anticorrosion au moyen d’un troisième dispositif (D3) couplé en déplacement audit deuxième dispositif (D2) afin de suivre ladite trajectoire avec ledit décalage temporel choisi. 4. Method according to one of claims 1 to 3, characterized in that in said step (10-40) is deposited on a second zone (Z2) of said second face (F2), located under said first zone (Z1) , another layer of second anti-corrosion material by means of a third device (D3) coupled in displacement to said second device (D2) in order to follow said trajectory with said chosen time offset.
5. Procédé selon la revendication 4, caractérisé en ce que dans ladite étape (10-40) on effectue un refroidissement d’au moins une sous-partie de ladite seconde zone (Z2) avant de déposer ladite autre couche sur cette sous-partie refroidie. 5. Method according to claim 4, characterized in that in said step (10-40) at least a sub-portion of said second zone (Z2) is cooled before depositing said other layer on this sub-portion. cooled.
6. Procédé selon la revendication 5, caractérisé en ce que dans ladite étape (10-40) on refroidit de façon continue ladite seconde zone (Z2) par un déplacement continu dudit troisième dispositif (D3), avant de déposer ladite autre couche de façon continue. 6. Method according to claim 5, characterized in that in said step (10-40) said second zone (Z2) is continuously cooled by a continuous displacement of said third device (D3), before depositing said other layer so as to keep on going.
7. Installation de traitement (IT) pour traiter une pièce métallique (PM) comprenant des première (F1 ) et seconde (F2) faces opposées, caractérisée en ce qu’elle comprend i) un premier dispositif (D1 ) propre à se déplacer sur une trajectoire choisie par rapport à ladite pièce métallique (PM) afin de réaliser un dépôt d’une première matière sur une première zone (Z1 ) de ladite première face (F1 ), et ii) un deuxième dispositif (D2) propre à se déplacer sur ladite trajectoire choisie par rapport à ladite pièce métallique (PM) afin de déposer une couche de seconde matière anticorrosion sur cette première zone (Z1 ), avec un décalage temporel choisi par rapport audit dépôt de la première matière. 7. Treatment installation (IT) for treating a metal part (PM) comprising first (F1) and second (F2) opposite faces, characterized in that it comprises i) a first device (D1) adapted to move on a trajectory chosen with respect to said metal part (PM) in order to deposit a first material on a first zone (Z1) of said first face (F1), and ii) a second device (D2) capable of moving on said path chosen with respect to said metal part (PM) in order to deposit a layer of second anti-corrosion material on this first zone (Z1), with a time shift chosen with respect to said deposition of the first material.
8. Installation selon la revendication 7, caractérisée en ce que ledit deuxième dispositif (D2) est propre à refroidir au moins une sous-partie de ladite première zone (Z1 ) avant de déposer ladite couche sur cette sous-partie refroidie. 8. Installation according to claim 7, characterized in that said second device (D2) is adapted to cool at least a sub-portion of said first zone (Z1) before depositing said layer on this cooled sub-portion.
9. Installation selon la revendication 7 ou 8, caractérisée en ce qu’elle comprend un troisième dispositif (D3) couplé en déplacement audit deuxième dispositif (D2) pour suivre ladite trajectoire par rapport à ladite pièce métallique (PM) avec ledit décalage temporel choisi afin de déposer une autre couche de seconde matière anticorrosion sur une seconde zone (Z2) de ladite seconde face (F2), située sous ladite première zone (Z1 ). 9. Installation according to claim 7 or 8, characterized in that it comprises a third device (D3) coupled in displacement to said second device (D2) to follow said trajectory with respect to said metal part (PM) with said chosen time offset in order to deposit another layer of second anti-corrosion material on a second zone (Z2) of said second face (F2), located under said first zone (Z1).
10. Installation selon la revendication 9, caractérisée en ce que ledit troisième dispositif10. Installation according to claim 9, characterized in that said third device
(D3) est propre à refroidir au moins une sous-partie de ladite seconde zone (Z2) avant de déposer ladite autre couche sur cette sous-partie refroidie. (D3) is capable of cooling at least a sub-portion of said second zone (Z2) before depositing said other layer on this cooled sub-portion.
PCT/FR2022/051519 2021-08-30 2022-07-28 Treatment of metal parts by depositing different materials in series WO2023031532A1 (en)

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FR2109009 2021-08-30
FR2109009A FR3126429A1 (en) 2021-08-30 2021-08-30 TREATMENT OF METALLIC PARTS BY SUCCESSIVE DEPOSITS OF DIFFERENT MATERIALS

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2109009A1 (en) 1970-10-30 1972-05-26 Commissariat Energie Atomique Processing composite metallic materials - incorporating metallic fibres or trichites etc
EP0630987A1 (en) * 1993-06-24 1994-12-28 Sollac Process for coating galvanized steel by cataphoretic painting
US20060210718A1 (en) * 2005-03-21 2006-09-21 General Magnaplate Corporation Combination high density/low density layers
EP2145974A1 (en) * 2008-07-16 2010-01-20 Siemens Aktiengesellschaft Method for high speed flame spraying
WO2016061636A1 (en) * 2014-10-24 2016-04-28 Laserbond Limited Method and apparatus for cladding a surface of an article
WO2017140994A1 (en) * 2016-02-19 2017-08-24 Safran Method and apparatus for manufacturing a part using successive deposition of layers
FR3100729A1 (en) * 2019-09-17 2021-03-19 Psa Automobiles Sa Process and installation for welding two metal parts

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2109009A1 (en) 1970-10-30 1972-05-26 Commissariat Energie Atomique Processing composite metallic materials - incorporating metallic fibres or trichites etc
EP0630987A1 (en) * 1993-06-24 1994-12-28 Sollac Process for coating galvanized steel by cataphoretic painting
US20060210718A1 (en) * 2005-03-21 2006-09-21 General Magnaplate Corporation Combination high density/low density layers
EP2145974A1 (en) * 2008-07-16 2010-01-20 Siemens Aktiengesellschaft Method for high speed flame spraying
WO2016061636A1 (en) * 2014-10-24 2016-04-28 Laserbond Limited Method and apparatus for cladding a surface of an article
WO2017140994A1 (en) * 2016-02-19 2017-08-24 Safran Method and apparatus for manufacturing a part using successive deposition of layers
FR3100729A1 (en) * 2019-09-17 2021-03-19 Psa Automobiles Sa Process and installation for welding two metal parts

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FR3126429A1 (en) 2023-03-03

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