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1. WO2020108821 - METHOD FOR LAYER-WISE ADDITIVE MANUFACTURING OF A SHAPED BODY

Publication Number WO/2020/108821
Publication Date 04.06.2020
International Application No. PCT/EP2019/075562
International Filing Date 23.09.2019
IPC
B22F 3/105 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
10Sintering only
105by using electric current, laser radiation or plasma
C04B 35/111 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
01based on oxides
10based on aluminium oxide
111Fine ceramics
C03B 19/01 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
19Other methods of shaping glass
01by progressive fusion of powdered glass onto a shaping substrate, i.e. accretion
C04B 35/486 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
01based on oxides
48based on zirconium or hafnium oxides or zirconates or hafnates
486Fine ceramics
C04B 35/488 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
01based on oxides
48based on zirconium or hafnium oxides or zirconates or hafnates
486Fine ceramics
488Composites
C04B 35/626 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
626Preparing or treating the powders individually or as batches
CPC
B22F 3/1055
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
10Sintering only
105by using electric current ; other than for infra-red radiant energy; , laser radiation or plasma
1055Selective sintering, i.e. stereolithography
B28B 1/001
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
1Producing shaped ; prefabricated; articles from the material
001Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
B29C 64/153
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive 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
10Processes of additive manufacturing
141using only solid materials
153using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/165
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive 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
10Processes of additive manufacturing
165using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
B33Y 10/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
10Processes of additive manufacturing
C03B 19/06
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
19Other methods of shaping glass
06by sintering, ; e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
Applicants
  • IVOCLAR VIVADENT AG [LI]/[LI]
  • IO TECH GROUP LTD [GB]/[GB]
Inventors
  • JOHN, Hendrik
  • ZENOU, Michael
  • RITZBERGER, Christian
Agents
  • UEXKÜLL & STOLBERG PARTNERSCHAFT VON PATENT- UND RECHTSANWÄLTEN MBB
Priority Data
18209300.529.11.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR LAYER-WISE ADDITIVE MANUFACTURING OF A SHAPED BODY
(FR) PROCÉDÉ DE FABRICATION ADDITIVE PAR COUCHES D'UN CORPS FAÇONNÉ
Abstract
(EN)
The present invention is directed to a Method for layer-wise additive manufacturing of a shaped body made up of slices of processed layers, said method comprising the steps: creating a layer of a slurry, said slurry including binder, a dispersing medium and a particulate filler material, solidifying the slurry layer, directing electromagnetic radiation to the solidified layer for processing it by debinding and/or sintering, and repeating the above-mentioned steps to successively build the shaped body, characterized in that said creating a slurry layer is performed by a laser induced forward transfer (LIFT) process utilizing a laser to direct laser beam pulses to act on a coating of slurry on a carrier to transfer droplets of slurry to a receptor surface to create the slurry layer which is then processed further by above-mentioned steps of solidifying, and debinding and/or sintering.
(FR)
La présente invention concerne un procédé de fabrication additive par couches d'un corps façonné constitué de tranches de couches traitées, ledit procédé comprenant les étapes consistant à : créer une couche d'une suspension, ladite suspension comprenant un liant, un milieu de dispersion et un matériau de charge particulaire ; solidifier la couche de suspension ; diriger un rayonnement électromagnétique vers la couche solidifiée pour la traiter par déliantage et/ou frittage ; et répéter les étapes susmentionnées pour construire successivement le corps façonné ; caractérisé en ce que ladite création d'une couche de suspension est effectuée par un procédé de transfert vers l'avant induit par laser (laser induced forward transfer - LIFT) utilisant un laser pour diriger des impulsions de faisceau laser pour agir sur un revêtement de suspension sur un support pour transférer des gouttelettes de suspension à une surface de réception pour créer la couche de suspension, dont le traitement est ensuite poursuivi par les étapes susmentionnées de solidification et de déliantage et/ou de frittage.
Also published as
Latest bibliographic data on file with the International Bureau