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1. WO2022161657 - THERMAL MODELLING APPROACH FOR POWDER BED FUSION ADDITIVE MANUFACTURING

Publication Number WO/2022/161657
Publication Date 04.08.2022
International Application No. PCT/EP2021/081911
International Filing Date 17.11.2021
IPC
B22F 10/20 2021.1
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
10Additive manufacturing of workpieces or articles from metallic powder
20Direct sintering or melting
B22F 10/28 2021.1
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
10Additive manufacturing of workpieces or articles from metallic powder
20Direct sintering or melting
28Powder bed fusion, e.g. selective laser melting or electron beam melting
B22F 10/80 2021.1
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
10Additive manufacturing of workpieces or articles from metallic powder
80Data acquisition or data processing
B33Y 50/00 2015.1
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
G05B 19/4099 2006.1
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19Programme-control systems
02electric
18Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
4097characterised by using design data to control NC machines, e.g. CAD/CAM
4099Surface or curve machining, making 3D objects, e.g. desktop manufacturing
G06F 30/20 2020.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
30Computer-aided design
20Design optimisation, verification or simulation
CPC
B22F 10/20
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
10Additive manufacturing of workpieces or articles from metallic powder
20Direct sintering or melting
B22F 10/28
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
10Additive manufacturing of workpieces or articles from metallic powder
20Direct sintering or melting
28Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/80
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
10Additive manufacturing of workpieces or articles from metallic powder
80Data acquisition or data processing
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 64/386
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
30Auxiliary operations or equipment
386Data acquisition or data processing for additive manufacturing
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
Applicants
  • SIEMENS ENERGY GLOBAL GMBH & CO. KG [DE]/[DE]
  • UNIVERSITY OF WATERLOO [CA]/[CA]
Inventors
  • BONAKDAR, Ali
  • IMANI SHAHABAD, Shahriar
  • TOYSERKANI, Ehsan
Agents
  • ROTH, Thomas
Priority Data
21154057.028.01.2021EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) THERMAL MODELLING APPROACH FOR POWDER BED FUSION ADDITIVE MANUFACTURING
(FR) APPROCHE DE MODÉLISATION THERMIQUE POUR FABRICATION ADDITIVE PAR FUSION DE LIT DE POUDRE
Abstract
(EN) A computer-implemented thermal modelling method for powder bed fusion additive manufacturing presented. The method comprises a microscale modelling (i) step, including a single- track simulation of a powder bed (6) with an energy beam (5), wherein a Gaussian heat source (G) and an anisotropic heat conductivity of a build-up material (6) are considered, and wherein heat source parameters are identified (I); and a macroscale modelling (ii) step, using a Gaussian effective heat flux to provide line-type irradiation scans (V), wherein the heat source parameters (H, v) and a heat conductivity coefficient are adapted to a macroscale. Moreover, a related computer program product and an additive manufacturing method are provided.
(FR) La présente invention concerne un procédé de modélisation thermique mis en œuvre par ordinateur pour la fabrication additive par fusion de lit de poudre. Le procédé comprend une étape de modélisation à l’échelle microscopique (i), comprenant une simulation à voie unique d’un lit de poudre (6) avec un faisceau d’énergie (5), une source de chaleur gaussienne (G) et une conductivité thermique anisotrope d’un matériau de construction (6) sont considérés, et des paramètres de source de chaleur étant identifiés (I) ; et une étape de modélisation à l’échelle macroscopique (ii), au moyen d’un flux de chaleur efficace gaussien pour fournir des balayages d’irradiation de type linéaire (V), les paramètres de source de chaleur (H, v) et un coefficient de conductivité thermique étant adaptés à une échelle macroscopique. De plus, l’invention concerne un produit de programme informatique et un procédé de fabrication additive associés.
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