Additive manufacturing process for manufactured parts including identification markers, identification process and associated manufactured part

Abstract

Additive manufacturing process for manufactured parts comprising identification markers, identification process and associated manufactured part. The manufacturing process for the manufactured part (10) comprises additive manufacturing of the manufactured part (10) from a manufacturing material, the manufactured part (10) comprising a body (20) and an identification marker (30) for the manufactured part (10), the additive manufacturing of the manufactured part (10) comprising the additive manufacturing of the body (20) and the additive manufacturing of the identification marker (30). The identification marker (30) is an identification element (32) embedded in the body (20) of the manufactured part (10), the identification element (32) being delimited by at least one geometric volume (34) strictly contained within the volume of the body (20). Figure for the abstract: Figure 1

Claims

Claims

1. A method of manufacturing a manufactured part (10) comprising an additive manufacturing (100) of the manufactured part (10) from a manufacturing material, the manufactured part (10) comprising a body (20) and a marker (30) for identifying the manufactured part (10), the additive manufacturing (100) of the manufactured part (10) comprising the additive manufacturing of the body (20) and the additive manufacturing of the identification marker (30), characterized in that the identification marker (30) is an identification element (32) embedded in the body (20) of the manufactured part (10), the identification element (32) being delimited by at least one geometric volume (34) strictly included in the volume of the body (20).

2. A manufacturing method according to claim 1, wherein the at least one geometric volume (34) is continuous.

3. Manufacturing method according to claim 1 or 2, wherein the identification element (32) is associated with an identifier of the manufactured part (10) included in a list of identifiers comprising: - an indicator of compliance with specifications and / or standards by the manufactured part (10); - an indicator of belonging of the manufactured part (10) to a type of manufactured parts (10); - an indicator of belonging of the manufactured part (10) to a category of manufactured parts (10) for a given type of manufactured parts (10); - a serial number of the manufactured part (10); - an indicator of origin of the manufactured part (10).

4. Manufacturing method according to claim 3, wherein the body (20) has a main material density, the identification element (32) having an auxiliary material density different from the main material density so that a value of at least one identification parameter relating to the identification element (32) is measurable by tomography, in particular by X-ray tomography.

5. Manufacturing method according to claim 4, wherein the value of the at least one identification parameter relating to the identification element (32) is uniquely associated with the identifier of the manufactured part (10).

6. Manufacturing method according to claim 4 or 5, wherein the at least one identification parameter of the identification element (32) of the manufactured part depends on a projection (35) of said identification element (32) on a surface (36).

7. Manufacturing method according to any one of claims 4 to 6, wherein the density of auxiliary material is less than or equal to 90% of the density of main material, preferably between 60% and 70% of the density of main material.

8. Manufacturing method according to any one of the preceding claims, in which the at least one geometric volume (34) of the identification element (32) has three dimensions, one dimension among these three dimensions being less than or equal to the other two dimensions and being greater than or equal to 200 pm.

9. Manufacturing method according to any one of the preceding claims, in which the body (20) of the manufactured part (10) comprises a useful part (22) and an additional part (24), the additional part (24) being intended to undergo less mechanical stress than the useful part (22), the identification element (32) being arranged in the additional part (24).

10. Manufacturing method according to any one of the preceding claims, wherein the additive manufacturing (100) of the manufactured part (10) comprises: - additive manufacturing of the body (20) of the manufactured part (10) such that the body (20) of the manufactured part (10) has a main porosity rate; - additive manufacturing of the identification element (32) of said manufactured part (10) such that the identification element (32) has an auxiliary porosity rate different from the main porosity rate.

11. Manufacturing method according to claim 10 wherein the manufacturing material is in the form of a powder, the additive manufacturing of the body (20) and / or the identification element (32) of the manufactured part (10) comprising the following steps: - application (110) of at least one layer of powder (50) of manufacturing material, the layer of powder (50) extending substantially along a layer plane (C); - melting (120) of at least one layer of powder (50) to produce the manufactured part (10); the melting step (120) being such that: - at least one main portion (52) of said powder layer (50), intended to be part of the body (20) of said manufactured part (10), is fused so that the body (20) of the manufactured part (10) has the main porosity rate; and - at least one auxiliary portion (54) of said powder layer (50), intended to be part of the identification element (32) of said manufactured part (10), is not fused or is fused so that the identification element (32) has the auxiliary porosity rate.

12. Manufacturing method according to claim 11, wherein the body (20) of the manufactured part (10) has a first ratio equal to: - a number of powder layers (50) making up the body (20) and undergoing a fusion (120); on - a total number of powder layers (50) making up the body (20); the identification element (32) of the manufactured part (10) having a second ratio equal to: - a number of powder layers (50) making up the identification element (32) and undergoing a fusion (120); on - a total number of powder layers (50) making up the identification element (32); the first ratio being different from the second ratio.

13. A manufacturing method according to claim 11 or 12, wherein the melting step (120) is carried out by irradiating the powder layer (50) of manufacturing material in the layer plane (C) with a laser beam (56) or an electron beam, the irradiation being carried out along parallel scanning lines (58) extending in the layer plane (C), two adjacent scanning lines (58) being separated by an interline distance (II; 12), the irradiation having a list of melting parameters comprising: - the power of the laser beam (56) or the electron beam; - the speed of movement of the laser beam (56) or the electron beam along the scanning lines (58); and / or - the interline distance (II; 12);the value of at least one fusion parameter taken from the list of fusion parameters relating to the at least one main portion (52) of said powder layer (50) being different from the value of said at least one fusion parameter relating to the at least one auxiliary portion (54) of said powder layer (50).;

14. Method (200) of identifying a manufactured part (10) to identify, the manufactured part (10) being obtained by the manufacturing method according to any one of the preceding claims, the identification method (200) comprising the identification of the manufactured part (10) as a function of the identification element (32) embedded in the body (20) of the manufactured part (10).

15. Identification method (200) according to claim 14, wherein the identification element (32) is associated with an identifier of the manufactured part (10) included in a list of identifiers, the list of identifiers comprising: - an indicator of compliance with specifications and / or standards by the manufactured part (10); - an indicator of belonging of the manufactured part (10) to a type of manufactured parts (10); - an indicator of belonging of the manufactured part (10) to a category of manufactured parts (10) for a given type of manufactured parts (10); - a serial number of the manufactured part (10) - an indicator of origin of the manufactured part (10);the identification method (200) comprising the following steps: - providing (210) an identification database uniquely associating a value of at least one identification parameter relating to the identification element (32) with the identifier of the manufactured part (10); - measuring the value of the at least one identification parameter of the identification element (32) of the manufactured part (10) to be identified; - identifying the manufactured part (10) to be identified by comparing the value of the at least one identification parameter measured with the value of the at least one identification parameter recorded in the database.;

16. Identification method (200) according to claim 15, wherein the measurement of the value of the at least one identification parameter relating to the identification element (32) of the manufactured part (10) to be identified is carried out by tomography, preferably by X-ray tomography.

17. Identification method (200) according to claim 16, wherein the at least one identification parameter relating to the identification element (32) of the manufactured part (10) depends on a projection (35) of said identification element (32) on a surface (36).

18. Manufactured part (10) obtained by the manufacturing method according to any one of claims 1 to 13, comprising a body (20) and an identification marker (30) manufactured by additive manufacturing, the identification marker (30) being an identification element (32) embedded in the body (20) of the manufactured part (10), the identification element (32) being delimited by at least one geometric volume (34) strictly included in the volume of the body (20).

19. Manufactured part (10) according to claim 18, in which the identification element (32) is associated with an identifier of the manufactured part (10) included in a list of identifiers, the list of identifiers comprising: - an indicator of compliance with specifications and / or standards by the manufactured part (10); - an indicator of belonging of the manufactured part (10) to a type of manufactured parts (10); - an indicator of belonging of the manufactured part (10) to a category of manufactured parts (10) for a given type of manufactured parts (10); - a serial number of the manufactured part (10); - an indicator of the origin of the manufactured part (10).

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