EP2792499A1 - Procédé destiné à l'inscription sur un composant - Google Patents

Procédé destiné à l'inscription sur un composant Download PDF

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Publication number
EP2792499A1
EP2792499A1 EP13164391.8A EP13164391A EP2792499A1 EP 2792499 A1 EP2792499 A1 EP 2792499A1 EP 13164391 A EP13164391 A EP 13164391A EP 2792499 A1 EP2792499 A1 EP 2792499A1
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EP
European Patent Office
Prior art keywords
coating
laser
labeling
component
laser beam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13164391.8A
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German (de)
English (en)
Inventor
Stefan Fruhnert
Stefanie Haberer
Achim Hilpert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP13164391.8A priority Critical patent/EP2792499A1/fr
Publication of EP2792499A1 publication Critical patent/EP2792499A1/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used

Definitions

  • the invention relates to a method for labeling a component. Furthermore, the invention relates to a switchboard and an electric motor, which are labeled by means of such a method.
  • Marking methods of components using a laser beam have been known for about 20 years. Although this type of lettering initially requires a high investment for a laser marking device, laser marking has significant advantages over other methods such as engraving, inking or the application of signs. Laser inscriptions are very resistant to environmental influences because they affect the surface directly, chemically or physically.
  • labeling method the method of labeling is referred to as labeling method and the resulting visible change of the coating is referred to as labeling. Marking processes using laser technology are used in many areas of everyday life. In the field of electric machines, for example, in cabinets and electric motors, labels are attached regularly by attaching signs.
  • a labeling method of license plate holders is known.
  • at least one color layer is applied to the surface to be labeled. Subsequently, this color layer is removed again by means of computer-programmed laser technology, so that the desired contour is visible.
  • the invention has for its object to provide an improved method for labeling of components, in particular of cabinets and electrical machines.
  • the object is further achieved by an electric motor and a control cabinet, which are labeled with such a method.
  • laser-based labeling of components has been known for some years, they are not yet used in the field of electrical machines and in particular in a labeling method of control cabinets or electric motors. Especially in the field of electrical machines individually manufactured nameplates are state of the art. This is not advantageous due to the high costs and the early determination on the label.
  • a laser marking process a laser beam is absorbed by the component. The absorbed energy then leads to different phenomena depending on the material and laser parameters.
  • For the production of inscriptions on coated surfaces by means of laser several methods are known: In the color removal process, the laser beam is focused near the surface of the component and the interaction of the laser beam with the material of the component near the surface leads to a strong heat.
  • the coating evaporates in the area where the laser irradiates the coating. An underlying coating is thus visible in some areas.
  • Another marking method for the laser-assisted color change of predefinable areas of surfaces is called a color change method.
  • the paint contains suitable pigments which absorb the laser light and change their color by a chemical reaction.
  • the methods of color removal and / or the color change method are not suitable because of the cost of the pigments.
  • lasers of a wavelength in the visible - or in the needed near ultraviolet range in the color change method lasers of a wavelength in the visible - or in the needed near ultraviolet range.
  • the purchase of a laser with a wavelength range in the visible or ultraviolet wavelength range is associated with higher costs than the acquisition of a laser in the infrared wavelength range, which is suitable for example for a color removal method.
  • Another cost-effective labeling method of large coated surfaces is a carbonization of the coating.
  • the laser beam strikes the surface of the coating and is absorbed by it in part.
  • the laser beam is focused on the surface.
  • the absorbed energy is largely converted into heat.
  • the heat causes incomplete oxidation of the irradiated area of the coating.
  • the unirradiated areas remain unchanged.
  • microscopic bubbles can form on the coating in the irradiated area, which remain after cooling of the irradiated layer and produce a rough, visible change in the surface.
  • the uppermost layer of the coating is darkened by the accumulation of carbon.
  • the thickness of the carbonized layer depends on the depth of penetration of the laser beam into the coating. This penetration depth in turn depends on the absorption coefficient of the coating for the corresponding wavelength, the irradiated laser power and the time of irradiation.
  • the laser parameters are normalized with respect to the irradiation surface.
  • a time averaged value of the laser power is decisive.
  • the energy absorbed for the labeling process is proportional to the product of laser power over time that the laser irradiates the surface.
  • the absorbed energy is also related to a constant area.
  • a major advantage of a carbonization process for labeling cabinets or electric motors is the variety of coatings that can be labeled with the Karbonmaschinesvon. This includes a vast majority of commercial paints and varnishes. Since no further work steps such as curing and no admixtures for coating are necessary, a carbonization process is a particularly cost-effective labeling process when large-area, coated surfaces are labeled. It is also possible to label rough and / or uneven surfaces with high accuracy. In addition, a labeling process by means of carbonization only low demands on the laser source used. Thus, most laser sources can be used without limitations for the carbonization process, which are not suitable for a color change process, for example. Suitable lasers for a carbonization process of a commercially available coating are in particular solid-state lasers or diode lasers in the near-infrared wavelength range.
  • Neodymium: yttrium aluminum garnet lasers (referred to as Nd: YAG lasers) or diode lasers are suitable for carbonizing coatings.
  • Nd yttrium aluminum garnet lasers
  • diode lasers are suitable for carbonizing coatings.
  • multi-photon excitation of the component coating molecules is selectable by the choice of laser power and wavelength.
  • Another advantage of the labeling by means of a carbonization process is the high contrast ratio of the label to the non-labeled surface, wherein the Contrast is also variable designable.
  • the contrast and / or the color depth of the label can be adjusted to the wishes and requirements.
  • the adjustment of the laser power and the irradiation time of a predefinable area is advantageously carried out by a filter in the laser beam or an adjustment of the laser itself, in particular the voltage at the laser diodes.
  • a carbon dioxide laser is suitable for the carbonization process. In the case of most suitable lasers, the output power of the laser can be easily adjusted by varying the operating voltage and / or the operating current.
  • the absorbed energy is further adjustable by a variation of the mirror speed, that is, the speed of the laser on the surface to be labeled.
  • the focus and thus the irradiance per surface element of the surface to be labeled can be varied. For the carbonization process of a coated surface only a small laser power is necessary.
  • the carbonization process, the color removal process as well as the material removal processes for labeling a region can be combined.
  • the inscription can be effected by means of a commercially available inscription device, in particular if the laser power of the laser used in the inscription device is sufficient for a color removal method or the material removal method.
  • Labeling devices are generally mobile. The labeling process can take place both during the manufacturing process and after completion of the component. It is also possible to supplement a label as part of a maintenance process. Thus, any change requests may be taken into account with regard to the description. Thus, change specifications can be taken into account until shortly before the implementation of the method for labeling. Line marking thicknesses in the micrometer range are possible by means of laser marking processes.
  • the Nd: YAG laser can be replaced by a more powerful carbon dioxide laser in a commercial labeling device, if the optics is modified.
  • the inscription method described makes it possible to inscribe a rough surface with high accuracy.
  • a carbonization process and / or a color removal process of the irradiated coating of the surface takes place, wherein the carbonization process and the color removal process takes place in different regions of the coating, wherein the color removal process by increasing the laser energy compared to the selected laser energy for a Karbonleitersvon the Coating takes place and wherein the Karbonticiansvon and the Materialabtragungsvon take place during a labeling process.
  • a combination of carbonation processes and color removal processes is particularly advantageous in control cabinets or electrical machines, in particular electric motors and in other components, which have a plurality of superposed coatings on its surface. The result is a multi-colored lettering of the control cabinet or the surface of the electrical machine.
  • a color removal process of the topcoat exposes the coating, which has a different color and is below the ablated coating.
  • a multi-colored inscription is possible by the removal of one or more coatings in regions.
  • lasers which emit a laser beam consisting of photons of several wavelengths.
  • the shares of the power of individual wavelength ranges can be adjusted by filters.
  • a label with the above procedure leads to a multi-colored label.
  • a tricolor label is also possible. If this is the color removal method used to inscribe a single-coated surface, the uncoated surface appears. In such a case, this is the metal surface of the component.
  • this area can be coated with a transparent varnish. This can also absorb an area in the visible wavelength range and thus have a colored effect. In addition to a color removal, further coatings of the surface can optionally be removed. Both labeling methods can be carried out during a labeling process in different areas on the surface of the component. In addition, a combination is suitable the method described to increase the security against counterfeiting of the labeled control cabinet or the labeled electric motor. If an electric motor or a control cabinet labeled with such a method is exposed to extreme weather conditions, a varnish with a transparent varnish increases the weathering resistance of those inscribed areas of the component surface which no longer have a protective coating due to the color removal.
  • a coating process in which both the carbonization process and the color removal process are used advantageously takes place in one operation.
  • the adaptation of the corresponding parameters such as the laser power and / or the mirror speed is required.
  • a change in focus with otherwise identical parameters of the laser used for the irradiation is another possibility to combine several of the described labeling methods.
  • this is technically unfavorable because a focus is less precisely adjustable, the size of the irradiated and thus affected area changes.
  • a change in focus is not as energy efficient as a change in laser power itself.
  • Labeling comprising combining areas formed by a carbonization process and a paint removal process is particularly advantageous for components that require well-recognizable lettering.
  • a transparent, yet colored paint can protect a metallic surface against corrosion of the areas which no longer have a coating for protection against negative environmental influences after a paint removal process.
  • a coating of exposed metal surfaces is particularly advantageous in adverse weather conditions or heavily used surfaces.
  • the possibility of combined designs, consisting of a mats coating and a glossy colored lettering, by a color removal process and / or a material removal process and a partial coating with a paint, and other black areas, resulting from the carbonization opened.
  • a method is advantageous in which the laser power is set so high during the marking process that the laser beam effects a material removal process of the area of the component to be inscribed also below the coating and wherein the carbonization process and / or the color removal process and / or the material removal process during a Operation is used to create the label of the component.
  • the term "material removal process” is also understood to mean engraving.
  • the laser power is so high that the near-surface region of the irradiated component melts or evaporates. The melt can then be removed by an air flow from the component.
  • the distinction of the method used being in the laser power.
  • High-performance gas lasers for example carbon dioxide lasers and solid-state lasers such as an Nd: YAG laser, are also suitable for a material removal process. Since a material removal process by means of a laser beam is not a machining, a particularly accurate labeling with a resolution in the micrometer range can be achieved.
  • a material removal process is also well suited for marking uneven surfaces.
  • An example of such an uneven surface is the surface a laminated core of an electric motor or other electrical machine.
  • a material removal process and / or a paint removal process may optionally compensate for unevenness of the surface in the area of the label.
  • such a laminated core of an electric motor can be described directly and / or obtained after a coating permanent labeling that is still visible even after a removal of the coating; especially in a material removal process.
  • the advantage of the combination of carbonization processes and material removal processes is the good visibility on the one hand of a lettering resulting from the carbonization of a coating, in combination with the durability of an engraving, which takes place through a material removal on the laminated core.
  • the areas of the coating that are labeled by a carbonization process, a color change process, and a material removal process are immediately adjacent to one another.
  • a laser of a wavelength of 1064 nm, a laser power of about 20 W and a pulse repetition rate of 20 kHz and a mirror speed of 1500 mm / s is used for the Karbonmaschinesvon.
  • the mirror speed refers to the speed that the laser beam has on the surface of the component to be inscribed.
  • 1,500 mm / s means that the laser beam travels 1,500 mm / s on the surface of the component.
  • Particularly suitable for generating such laser beams are diode lasers or solid-state lasers, such as, for example, an Nd: YAG laser.
  • Nd: YAG lasers are widely used and technically mature.
  • Nd YAG lasers
  • YAG lasers as well as other diode lasers or diode pumped lasers are characterized by a low maintenance of the possibility a high repetition rate and low energy consumption compared to gas lasers.
  • Carbon dioxide lasers are also particularly suitable for material removal since they regularly have high performance at a low purchase price.
  • short-pulse lasers are furthermore suitable which have pulse durations in the subnanosecond range.
  • These may be, for example, solid-state lasers or modified dye lasers.
  • Nd: YAG lasers but also other high-performance lasers can be doubled by means of suitable materials in the beam path in their frequency. As a rule, only part of the laser light is doubled in frequency. Thus, after the passage of the laser beam through the material, a laser beam with two different frequencies is created.
  • the use of such a laser beam for a material removal process and / or for a Karbonmaschinesvon and for a color change reaction of the surface of a component is suitable.
  • the ratio of the laser powers of the different frequencies is advantageously adjustable.
  • a labeling device is used for the labeling of the surface, wherein the labeling device automated and / or computer controlled performs the labeling process, the necessary data for the labeling process in the form of an image file for the labeling device fed only immediately before the labeling process becomes. Due to the use of such a labeling device, customer requests can not be included in the labeling until immediately before the completion of the component.
  • the use of a mobile labeler can also be used in the field of maintenance if new information is added to an existing label, or a new label is to be generated.
  • image files are files of known CAD programs, for example, AutoCAD or I-DEAS, as well as vector graphics files.
  • the information may be transmitted to the label device via a known interface, such as a USB interface, or through a flash memory card.
  • the labeling device can be connected directly to the intranet or the Internet, in particular via WLAN.
  • the feeding of the image file via a flash memory card or via another memory module a memory, which is transferred for example by a USB connection to a control device of the labeling device, is advantageous in the mobile application area in relation to the attachment of signs.
  • data can be included in the label, which have been determined only after completion of the cabinet or the electric motor. Conceivable here is the actual power, the ratio of reactive power to active power or the maximum speed of an electric motor and other component-specific data.
  • the label has a graphic code, in particular a 2D code
  • this graphic code contains information about the component, such as manufacturer and / or date of manufacture and / or serial number and / or other operationally relevant data.
  • operational information such as the serial number or type of component, may result in significant cost savings.
  • An inscription by means of a coating, an adhesive label and / or a fixed nameplate is in adverse weather conditions as well as high stress on the surface, it is possible by means of a so-called 2D code to store a variety of data on the component on the component, which be easily read in a maintenance process by means of a mobile detection unit and are provided with a connection to a database all essential information without significant time delay.
  • Especially Inscription methods such as a carbonization method and / or a color removal method, are suitable for producing a particularly resistant inscription.
  • An inscription of a surface which is carried out by a laser-assisted material removal method or a color removal method, has a high security against counterfeiting.
  • a non-visible color change can be achieved with a color change method if the coating of the component to be inscribed has a suitable lacquer. For example, by a color removal method in which not the entire coating is removed and a subsequent filling with a transparent lacquer.
  • Further features for recognition include, for example, a label below a covering coating, which lies above the label.
  • a detection unit which lies in a wavelength range outside the visible spectrum, a non-visible to the eye coating can be detected.
  • Powder coatings are characterized by a high resistance and a low price.
  • powder coatings require no previous priming of the surface.
  • Powder coatings can be applied to a variety of materials.
  • a carbonization of a powder coating creates a label that is particularly resistant. With a surface abrasion of the paint layer, the carbonized area is still visible. Fading as a result of prolonged exposure to weather conditions, such as sunlight, or other burdens in conventional labeling leads to fading of the label and / or a lower contrast ratio. At a Laser marking according to the invention does not occur this effect.
  • the contrast can be even increased by a surface treatment in which the uppermost layer of the coating is removed, the contrast ratio of a carbonized surface.
  • This behavior which deviates from conventional lettering, continues to be a reliable means of detecting counterfeit products, especially if the components have been used for some time.
  • Powder coatings from CWS, in particular from CEWPOL 13, which are applied with a thickness of 50 square meters to about 200 square meters on the component to be inscribed, are particularly suitable for coating a control cabinet or an electric motor.
  • almost any other organic pigment coating can be used for coating and subsequent lettering by a method of the invention.
  • FIG. 1 shows a device for a labeling method of a surface of a component 1 by means of a laser beam 7.
  • the component 1 is, for example, a control cabinet or an electric machine having a laminated core, such as an electric motor. Since laminated cores regularly have a rough surface even after coating with a lacquer, the inscription method by means of a laser beam 7 is particularly advantageous.
  • the labeling device 5 fixedly mounted on the surface of the component 1.
  • the attachment may, for example, by means of suction cups on a stand 15 or a press connection by an external pressing on the surface of the coating 3.
  • a spacer or one or more feet 15th serves as in FIG. 1 shown, a spacer or one or more feet 15th
  • the device for producing a label (9, 9a, 9b, 9c) of the component 1 is composed of the labeling device 5, a laser 10, a light guide 11, a control device 17 and the control lines 13, 13 'together.
  • the control unit 17 and / or the laser 10 can also be integrated in the labeling device 5.
  • the laser 10 generates the laser beam 7 and guides it through an optical waveguide 11 into the actual inscription device 5.
  • the control device 17 is connected to the laser 10 via a further control line 13 '.
  • Within the labeling device 5 is one or more mirrors, which can be adjusted in a controlled manner in all three spatial directions.
  • the setting of the individual mirrors in the labeling device 5 is carried out, for example, by a plurality of stepper motors or piezoelements.
  • the control of the adjustment of the mirror is carried out by means of a control device 17, which is connected via a control line 13 to the actual labeling device 5.
  • other optical elements may be located in the labeling device 5, such as a telescope or other curved mirror to adjust the focus on the desired position of the component 1.
  • the focus of the laser beam 7 is set to the surface of the coating 3 of the component 1.
  • the laser 10 is advantageously a solid-state laser, for example a Nd: YAG laser, which emits a laser beam 7 of a wavelength of 1064 nanometers. If necessary, the laser 10 with equip a frequency doubling unit.
  • a carbon dioxide laser having a wavelength of 10600 nanometers is also suitable instead of the solid-state laser.
  • a cover is to be installed around the labeling device 5 for safety.
  • a cover for a better overview in FIG. 1 Not shown.
  • the control unit 17 converts the data, for example vector graphics or CAD files, into information which positions the mirror and, if appropriate, the focus in accordance with the specifications.
  • the data is fed into the control unit 17 advantageously via a technical data connection such as, for example, a network connection (WLAN, Ethernet), USB or a flash memory.
  • the controller 17 may be connected directly to the intranet or Internet.
  • a CCD camera (not shown) is advantageously also installed, which monitors the marking process.
  • the labeling method is advantageously to be modified or stopped.
  • a modification or a termination can also be dispensed with.
  • the Karbonmaschinesvon or Farbabtragungsvon or especially at a high laser power a material removal process.
  • the degree of carbonization 9a or the color removal 9b or the material removal 9c see FIG.
  • the filter 2 can be adjusted by changing the focus of the laser beam 7 or by changing the power of the laser 10 or by a filter.
  • the filter is advantageous to integrate in the labeling device 5 or in the laser 10.
  • the strength of the filter is advantageously controlled by the controller 17.
  • the change in the power of the laser beam 7 is either by a variable attenuation of the laser beam 7 at a constant output power of the laser 10 or can be adjusted by increasing or decreasing the diode voltage / diode current in the laser 10.
  • For the coating 3 of the surface is a variety of colors and paints.
  • a powder coating, a clearcoat or mixtures of powder coatings with further coatings for the coating 3 of the component 1 are suitable.
  • a powder coating material used advantageously has at least one organic pigment.
  • the process of carbonization of the surface of the coating 3 requires a pigment which is carbonated by a chemical reaction under strong heat. During the carbonization process, a portion of incinerator 3 incompletely burns and a layer of carbon deposits near the surface of the coating 3. The result is a clearly visible inscription 9, 9a in the areas of the coating 3 which have been irradiated by means of the laser beam 7. Furthermore, suitable plastics for producing a coating 3 of the surface of the component 1 can also be used. Powder coatings, in particular powder coatings from CWS (for example the CEWPOOL product series), have proven to be particularly suitable. Coatings 3 with a powder coating are widely used in the field of painting of control cabinets and other components 1, therefore, the method described can also be used for a labeling method of existing cabinets.
  • FIG. 2 shows a section of a label 9, composed of individual areas 9a, 9b, 9c, which are caused by a Karbonmaschinesvon 9a, a color removal method 9b and a material removal method 9c. These methods were created by irradiation with a laser beam 7 of different laser powers. As stated above, the inscription 9, 9a, 9b, 9c is formed by the partial irradiation of the coating 3 of the surface of the component 1 by the laser beam 7. The laser beam 7 is focused on the surface of the coating 3 for a carbonization process. In a Karbonmaschinesclar is the incomplete oxidation of the coating 3, in particular the incomplete oxidation of the pigments of the applied paint. The carbonization 9a is limited only to a thin layer near the surface of the coating 3.
  • the unirradiated area of the coating 3 is thus not affected.
  • the necessary laser power for the Karbonmaschinesvon is low in comparison to the other labeling methods mentioned above. If a higher power of the laser beam 7 is selected, deeper layers of the coating 3 can be influenced. By absorbing the laser beam 7 through the pigments of the coating 3, a large amount of heat is generated locally. With sufficient laser power, the local heating is sufficient, the coating 3 to evaporate. This process can also be accompanied by a complete oxidation of the irradiated area of the coating 3.
  • the coating is 3, as in the FIG. 2 shown completely removed from the surface of the component. If the laser power is set even higher, the underlying surface of the component 1 under the coating 3 is affected. Analogous to the color removal method, it is possible that with sufficient laser power near the surface Layers of the component 1 first exposed by a color removal process and immediately evaporate a small amount of material near the surface of the (uncoated component 1). This results in a engraving-like notch (material removal 9c) in the component 1. Compared to an engraving by a machining process, the laser engraving has a very high accuracy.
  • a lettering 9, 9b, 9c can be carried out by the subsequent application of a carbonization process, a color removal process and a material removal process in one operation.
  • the corresponding areas of the labeling 9, 9a, 9b, 9c, which are to be labeled with one or the other method, is predetermined. Thereafter, the default is in the controller 17, as in FIG. 1 represented, transmitted. After the labeling process, further steps for preserving the lettering 9, 9a, 9b, 9c can be carried out. If the control cabinet or the electric motor will be exposed to adverse weather conditions or heavy use during operation, the surface which has been marked by a paint or a material removal, for example, by means of another transparent coating 3 sealed.
  • the labeling method by means of a laser beam 7 regularly represents a particularly gentle type of labeling 9, 9a, 9b, 9c (in particular 9a) of the surface of a component 1.
  • the individual regions the region in which the coating is composed by a carbonization 9a, a paint removal 9b and a material removal 9c are in close proximity to one another. This method is therefore suitable for producing a particularly tamper-proof label.
  • the carbonization process and the material removal process are also very durable labeling methods and can therefore be used particularly in the fields of durable electrical machines.
  • Fig. 3 shows a manufacturing scheme of a component, in particular an electric motor.
  • a component 1 here an electric motor, manufactured according to the specifications.
  • a functional test takes place, wherein after connection of the motor by the control line 19 is put into different operating states. This is indicated by the curved arrow.
  • Relevant operating data can be determined by a measuring device 18.
  • a check of the labeling 9, 9a, 9b, 9c by the measuring device 18 for quality control is advantageous.
  • the time of the next maintenance can be determined. The data are evaluated automatically and the information is transmitted to the control unit 17 of the labeling device 5.
  • the data for the labeling 9, 9a, 9b, 9c of the component 1 are assembled. Further specifications can be transmitted to the control unit 17 immediately before the labeling process.
  • the data can in this case be transmitted to the control unit 17 by a mobile data carrier, by a connection by means of a known interface, for example USB, RS-232 or a GPIB interface (General Purpose Interface Bus, IEEE-488).
  • the controller 17 may also be connected directly to the intranet or Internet. So the corresponding data can be obtained from a database become.
  • these data are transmitted or retrieved only immediately before the labeling process. These data are then transmitted from the control unit 17 to the labeling device 5. This performs the labeling process of the component 1. It is advantageous that measured operating data and change requests can be changed until immediately before the lettering.
  • the invention relates to a method for labeling surfaces of a component 1, in particular surfaces of a control cabinet or an electric motor, wherein the surface before the labeling process has a coating 3, wherein an irradiated area of the surface by the interaction of the coating 3 with a laser beam 7 carbonized wherein the lettering 9, 9a, 9b, 9c is produced by a different color of the surface before and after the irradiation, and by means of a variation of the power of the laser beam 7 the contrast of the lettering 9, 9a, 9b, 9c is changed.
  • the lettering 9, 9a, 9b, 9c is very resistant, weather-resistant and can be advantageously changed until just before the labeling process.
  • data measured after the manufacture of the component 1 can be included in the labeling 9, 9a, 9b, 9c.
EP13164391.8A 2013-04-19 2013-04-19 Procédé destiné à l'inscription sur un composant Withdrawn EP2792499A1 (fr)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2017125364A1 (fr) * 2016-01-18 2017-07-27 Phoenix Contact Gmbh & Co. Kg Procédé de marquage de composants électriques
EP3211568A1 (fr) * 2016-02-25 2017-08-30 Dr. Karsten Königstein, Ulrich Lawory, Ralf Deitenberg GbR Système de construction codé lisible par ordinateur
WO2018015037A1 (fr) * 2016-07-21 2018-01-25 Fibro Gmbh Dispositif et procédé pour produire et détecter une identification infalsifiable
DE102018112035B3 (de) * 2018-05-18 2019-06-19 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kraftfahrzeug-Bremsscheibe

Citations (9)

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