# US 11,077,610 B2 · Method for powder-based additive manufacturing of a part, in particular a lining element for a tire mould > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,610 B2 - Document ID: US11077610B2 - Status: Granted - Kind: B2 - Application number: 15/773,465 - Filed: 2016-11-03 - Published: 2018-11-08 - Granted: 2021-08-03 - Earliest claimed: 2015-11-06 - Assignees: Compagnie Generale Des Etablissements Michelin - Applicants: Compagnie Generale Des Etablissements Michelin - Inventors: Etienne Blanchet; Romain Calvel; Florian Eparvier - Web page: https://patentgrep.com/patent/US11077610B2 ## CPC - B22F 5/003: {Articles made for being fractured or separated into parts} - B22F 5/007: {of moulds} - B22F 10/28: Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] - B22F 10/47: characterised by structural features - B29C 64/153: using layers of powder being selectively joined, e.g. by selective laser sintering or melting - B29C 64/182: in parallel batches - B29C 64/245: Platforms or substrates (support structures intended to be sacrificed after manufacture B29C64/40) - B29D 30/0606: {Vulcanising moulds not integral with vulcanising presses (for solid tyres B29D30/02)} - B33Y 10/00: Processes of additive manufacturing - B33Y 80/00: Products made by additive manufacturing - B22F 2998/10: Processes characterised by the sequence of their steps - B28B 1/001: {Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material (selective deposition modelling of metallic powder B22F10/00; rapid manufacturing of 3D objects in general and in particular of plastics B29C64/00)} - B29D 2030/0616: {Surface structure of the mould, e.g. roughness, arrangement of slits, grooves or channels} - B29L 2031/757: {Moulds, cores, dies} - Y02P 10/25: Process efficiency - B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00) - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - B28B: SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER (foundry moulding B22C; working stone or stone-like material B28D; shaping of substances in a plastic state, in general B29C; making layered products not composed wholly of these substances B32B) - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract Method for additive manufacturing of at least one component comprises the manufacture, by depositing and selective melting of layers of powder, of at least one intermediate assembly comprising the component produced at an inclined angle and forming an angle of between 20° and 70° with a manufacturing support plate, a support interposed between the support plate and a lower base of the component, and at least one local supporting element resting against the rear frontal face of the component. During the selective-melting phases of the manufacturing step, incipient cracks are formed in regions of connection of the support and of the supporting element to the component. The component is separated from the support and the local supporting element after the manufacturing step by breaking of the connecting regions. ## Claims ### Claim 1 A method for additive manufacturing of a plurality of components on a manufacturing support plate by powder sintering or melting using at least one beam of energy, each component comprising at least two opposite front frontal and rear frontal faces delimiting the thickness of the component and a plurality of protrusions projecting out from the front frontal face thereof, the method comprising the following steps: a) simultaneous manufacturing, by depositing and selective melting of layers of powder stacked on the manufacturing support plate, of a plurality of intermediate assemblies at least in one row, each intermediate assembly comprising: (i) a component produced at an inclined angle with respect to the manufacturing support plate and forming an angle of between 20° and 70° with the support plate, (ii) a support interposed between the manufacturing support plate and a lower base of the said component, and (iii) at least one local supporting element resting against the rear frontal face of the component, the local supporting element of the assembly being arranged and configured in such a way as to avoid any contact with the protrusions of the component of the adjacent intermediate assembly of the row, and (iv) fused powder layers of the component, of the support and of the local supporting element being joined to one another, b) formation, during the selective-melting phases of the manufacturing step, of incipient cracks in regions of connection of the support and of the supporting element to the component of each intermediate assembly, and c) separation of the component from the support and the local supporting element of each intermediate assembly after the manufacturing step by breaking of the connecting regions. ### Claim 2 (depends on 1) The method according to claim 1, wherein at least one groove is formed locally on the rear frontal face of the component of each intermediate assembly and/or on the lower base of the component during the manufacturing step, the region of connection of the local supporting element to the component being positioned inside the groove. ### Claim 3 (depends on 1) The method according to claim 1, wherein the incipient cracks comprise a local reduction in the thickness of the connecting zones and/or local cavities formed on the zones. ### Claim 4 (depends on 1) The method according to claim 1, wherein a chamfered part is formed between the lower base of the component of each intermediate assembly and the rear frontal face thereof, the region of connection of the support to the component being connected to the chamfered part. ### Claim 5 (depends on 1) The method according to claim 1, wherein the region of connection of the support of each intermediate assembly to the component and/or the region of connection of the supporting element to the component have a density of less than 98%. ### Claim 6 (depends on 1) The method according to claim 1, wherein each intermediate assembly comprises at least two local supporting elements each one resting against one of the ends of the rear frontal face of the component. ### Claim 7 (depends on 1) The method according to claim 1, wherein the local supporting element of each intermediate assembly extends from the manufacturing support plate. ### Claim 8 (depends on 1) The method according to claim 1, wherein the local supporting element of each intermediate assembly is connected to the rear frontal face of the component of the assembly and to the front frontal face of the component of the adjacent intermediate assembly of the row, the faces facing one another. ### Claim 9 (depends on 1) The method according to claim 1, wherein the component of each intermediate assembly is a lining element for a tire mould having a thickness of between 0.25 and 6 millimetres.