FR2661271A1 - Method of marking metal parts and fluorescent compounds for implementing the method - Google Patents

Method of marking metal parts and fluorescent compounds for implementing the method Download PDF

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Publication number
FR2661271A1
FR2661271A1 FR9005117A FR9005117A FR2661271A1 FR 2661271 A1 FR2661271 A1 FR 2661271A1 FR 9005117 A FR9005117 A FR 9005117A FR 9005117 A FR9005117 A FR 9005117A FR 2661271 A1 FR2661271 A1 FR 2661271A1
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FR
France
Prior art keywords
marking
implementing
metal parts
fluorescent compound
fluorescent compounds
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Granted
Application number
FR9005117A
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French (fr)
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FR2661271B3 (en
Inventor
Le Cars Pierre
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Individual
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Individual
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Priority to FR9005117A priority Critical patent/FR2661271B3/en
Publication of FR2661271A1 publication Critical patent/FR2661271A1/en
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Publication of FR2661271B3 publication Critical patent/FR2661271B3/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/55Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing beryllium, magnesium, alkali metals or alkaline earth metals
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/22Luminous paints

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

- According to the invention, a fluorescent compound is sprayed in a fine layer onto the metal which is then covered with at least one layer of paint which is opaque in the visible spectrum. - Applications: invisible marking of motor cars, weapons, plant and machinery, machine tools, etc.

Description

La présente invention a pour objet un procédé de marquage de pièces métalliques et en particulier, mais non exclusivement, de carrosseries automobiles ou d'objets sensibles tels que des armes à feu ou des fûts destinés à recevoir des substances dangereuses tels que certains composants chimiques ou des déchets nucléaires.The subject of the present invention is a method of marking metal parts and in particular, but not exclusively, of automobile bodies or of sensitive objects such as firearms or barrels intended to receive dangerous substances such as certain chemical components or nuclear waste.

La solution actuelle à ce problème consiste à effectuer une déformation plastique de la matière par poinçonnage. La contre-mesure également classique consiste dans le limage de la zone qui contient le marquage.The current solution to this problem consists in carrying out a plastic deformation of the material by punching. The also classic countermeasure consists in filing the area containing the marking.

La présente invention a pour objet un procédé de marquage invisible en lumière du jour, de sorte que le marquage soit en quelque sorte auto-protégé puisqu'il n'est pas directement accessible.The present invention relates to a method of marking invisible in daylight, so that the marking is in some way self-protected since it is not directly accessible.

Selon la présente invention, le procédé de marquage de pièces métalliques est caractérisé en ce qu'il consiste à projeter localement sur une surface, selon un code de type alphanumérique par exemple, un composé fluorescent puis à recouvrir l'ensemble de la surface d'au moins une couche de revêtement opaque.According to the present invention, the method of marking metal parts is characterized in that it consists in locally projecting onto a surface, according to a code of alphanumeric type for example, a fluorescent compound and then in covering the entire surface of at least one opaque coating layer.

Lors de l'irradiation de la pièce par une source ultraviolette de longueur d'onde déterminée, et par exemple de 365 nanomètres ou plus basse dans les 254 nanomètres en fonction des pigments utilisés, le marquage apparaît à travers la couche opaque.During the irradiation of the part by an ultraviolet source of determined wavelength, and for example of 365 nanometers or lower in the 254 nanometers according to the pigments used, the marking appears through the opaque layer.

De préférence, le marquage a une épaisseur inférieure à cinq microns afin d'éviter l'apparition de reliefs en lumière rasante. Preferably, the marking has a thickness of less than five microns in order to avoid the appearance of reliefs in grazing light.

Ainsi, la pièce marquée ne se différencie pas d'une pièce non marquée lorsqu'elle est éclairée en lumière du jour ou en lumière artificielle dans la gamme des 400 à 700 nanomètres, le revêtement étant opaque.Thus, the marked part does not differ from an unmarked part when it is lit in daylight or in artificial light in the range of 400 to 700 nanometers, the coating being opaque.

Par contre, en lumière de WOOD, l'émission secondaire traverse les couches de revêtement pour que le marquage apparaisse clairement lorsque celà est désiré. Dans les marquages fluorescents connus la couche fluorescente était toujours extérieure à la pièce alors que dans le procédé faisant l'objet de l'invention, cette couche est en quelque sorte intégrée à la pièce.On the other hand, in WOOD light, the secondary emission passes through the coating layers so that the marking appears clearly when this is desired. In known fluorescent markings, the fluorescent layer was always external to the part, whereas in the process which is the subject of the invention, this layer is somehow integrated into the part.

La matière fluorescente est une peinture incluant une base résine acrylique hydroxylée et un pigment fluorescent minéral auquel est adjoint dans une proportion de 1 pour 5 un durcisseur aromatique ou aliphatique. Elle peut également être constituée de copolymères acryliques bicomposants.The fluorescent material is a paint including a hydroxylated acrylic resin base and a mineral fluorescent pigment to which is added in a proportion of 1 to 5 an aromatic or aliphatic hardener. It can also consist of two-component acrylic copolymers.

Une composition permettant la mise en oeuvre de l'invention est commercialisée par la société SENO FRANCE sous la référence S. 16 511. Les métaux tels qu'acier, fer, aluminium, cuivre etc.. peuvent être marqués et ensuite être laqués, émaillés, anodisés etc et subir des traitements thermiques jusqu'à 2500 C.A composition allowing the implementation of the invention is marketed by the company SENO FRANCE under the reference S. 16 511. Metals such as steel, iron, aluminum, copper etc. can be marked and then be lacquered, enamelled , anodized etc and undergo heat treatments up to 2500 C.

Exemple
Dans le cas de marquage d'automobiles neuves, on procède au marquage par jet d'encre ou pulvérisation sur la tôle brute dépoussiérée et dégraissée. Une fois la polymérisation réalisée le marquage est recouvert de deux couches d'apprêt puis de trois couches de peintures. L'ensemble est chauffé à plus de 150 . Avec de la peinture "blanc cassé", la plus chargée en pigment, on constate qu'il n'apparaît aucune marque en lumière du jour et que le marquage émerge des couches de peinture. Dans l'exemple donné, le marquage apparaît en bleu mais la couleur restituée dépend, bien entendu, du pigment utilisé et, dans une moindre mesure,de la longueur d'onde de la lumière U.V..
Example
In the case of marking of new cars, one proceeds to the marking by ink jet or spraying on the rough sheet dedusted and degreased. Once the polymerization has been carried out, the marking is covered with two layers of primer and then three layers of paints. The whole is heated to more than 150. With "off-white" paint, the most charged with pigment, we can see that no mark appears in daylight and that the marking emerges from the layers of paint. In the example given, the marking appears in blue but the color restored depends, of course, on the pigment used and, to a lesser extent, on the wavelength of UV light.

A fortiori, le marquage apparat plus nettement sous ultraviolet avec toutes les autres teintes de peinture moins pigmentées que le blanc.A fortiori, the marking appears more clearly under ultraviolet with all the other shades of paint less pigmented than white.

La composition de marquage est constituée par une dispersion colloïdale liquide de polyuréthane aliphatique incluant au moins un agent de coalescence. Le pigment minéral inclût, de préférence une combinaison de terres rares ou d'alcalinoterreux telle qu'une association d'erbium et d'yttrium.D'autre lanthanides peuvent être utilisés en fonction de la couleur désirée de l'émission secondaire.The labeling composition consists of a liquid colloidal dispersion of aliphatic polyurethane including at least one coalescing agent. The mineral pigment includes, preferably a combination of rare earths or alkaline earths such as a combination of erbium and yttrium. Other lanthanides can be used depending on the desired color of the secondary emission.

Cette composition peut être appliquée par des moyens connus tels que : aérographe, jet d'encre, pistolet etc... Elle est recouvrable en une heure environ.This composition can be applied by known means such as: airbrush, inkjet, spray gun, etc. It can be recovered in approximately one hour.

Outre les domaines d'utilisation mentionnés précédement, la présente invention trouve également des applications dans le matériel de chantier, les machines outils etc..In addition to the fields of use mentioned above, the present invention also finds applications in site equipment, machine tools, etc.

Il va de soi que de nombreuses variantes peuvent être introduites, notamment par substitution de moyens techniquement équivalents sans pour autant sortir du cadre de l'invention. It goes without saying that many variants can be introduced, in particular by substitution of technically equivalent means without departing from the scope of the invention.

Claims (4)

REVENDICATIONS 1) Procédé de marquage de pièces métalliques caractérisé en1) Method for marking metal parts characterized in ce qu'il consiste à projeter localement sur une surface, what it consists of projecting locally on a surface, selon un code, un composé fluorescent puis à recouvrir according to a code, a fluorescent compound then to be covered ladite surface de la pièce d'une couche opaque. said surface of the part with an opaque layer. 2) Procédé selon la revendication 1, caractérisé en ce que2) Method according to claim 1, characterized in that l'épaisseur du marquage de la couche projetée est the thickness of the marking of the sprayed layer is inférieure à cinq microns. less than five microns. 3) Composé fluorescent pour la mise en oeuvre du procédé3) Fluorescent compound for implementing the process selon la revendication 1 caractérisé en ce qu'il comprend according to claim 1 characterized in that it comprises une base acrylique ou une dispersion colloïdale de an acrylic base or a colloidal dispersion of polyuréthane aliphatique et un pigment minéral. aliphatic polyurethane and a mineral pigment. 4) Composé fluorescent pour la mise en oeuvre du procédé4) Fluorescent compound for implementing the process selon la revendication 1, caractérisé en ce que le according to claim 1, characterized in that the pigment comprend au moins un corps alcalinoterreux.  pigment comprises at least one alkaline earth body.
FR9005117A 1990-04-23 1990-04-23 METHOD FOR MARKING METAL PARTS AND FLUORESCENT COMPOUNDS FOR CARRYING OUT THE METHOD. Expired - Lifetime FR2661271B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9005117A FR2661271B3 (en) 1990-04-23 1990-04-23 METHOD FOR MARKING METAL PARTS AND FLUORESCENT COMPOUNDS FOR CARRYING OUT THE METHOD.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9005117A FR2661271B3 (en) 1990-04-23 1990-04-23 METHOD FOR MARKING METAL PARTS AND FLUORESCENT COMPOUNDS FOR CARRYING OUT THE METHOD.

Publications (2)

Publication Number Publication Date
FR2661271A1 true FR2661271A1 (en) 1991-10-25
FR2661271B3 FR2661271B3 (en) 1992-07-24

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FR9005117A Expired - Lifetime FR2661271B3 (en) 1990-04-23 1990-04-23 METHOD FOR MARKING METAL PARTS AND FLUORESCENT COMPOUNDS FOR CARRYING OUT THE METHOD.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007015703A1 (en) * 2006-05-19 2007-11-22 Volkswagen Ag motor vehicle
WO2011101001A1 (en) * 2010-02-19 2011-08-25 GWP Gesellschaft für Werkstoffprüfung mbH Metal component with marking and a method for manufacturing a metal component with marking

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007015703A1 (en) * 2006-05-19 2007-11-22 Volkswagen Ag motor vehicle
US7753541B2 (en) 2006-05-19 2010-07-13 Volkswagen Ag Motor vehicle
WO2011101001A1 (en) * 2010-02-19 2011-08-25 GWP Gesellschaft für Werkstoffprüfung mbH Metal component with marking and a method for manufacturing a metal component with marking

Also Published As

Publication number Publication date
FR2661271B3 (en) 1992-07-24

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