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1. WO2021057715 - HIGHLY EFFICIENT METHOD FOR ADDITIVE MANUFACTURING

Publication Number WO/2021/057715
Publication Date 01.04.2021
International Application No. PCT/CN2020/116802
International Filing Date 22.09.2020
IPC
B29C 64/153 2017.1
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 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 64/214 2017.1
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 objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
20Apparatus for additive manufacturing; Details thereof or accessories therefor
205Means for applying layers
214Doctor blades
B33Y 30/00 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
30Apparatus for additive manufacturing; Details thereof or accessories therefor
B22F 3/105 2006.1
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
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
CPC
B22F 10/00
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
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 10/38
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
30Process control
38to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
B22F 10/73
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
70Recycling
73of powder
B22F 12/45
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
12Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
40Radiation means
44characterised by the configuration of the radiation means
45Two or more
B22F 12/55
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
12Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
50Means for feeding of material, e.g. heads
55Two or more means for feeding material
Applicants
  • 华中科技大学 HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY [CN]/[CN]
Inventors
  • 王泽敏 WANG, Zemin
  • 骆顺存 LUO, Shuncun
Agents
  • 华中科技大学专利中心 HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY PATENT AGENCY CENTER
Priority Data
201910905514.424.09.2019CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) HIGHLY EFFICIENT METHOD FOR ADDITIVE MANUFACTURING
(FR) PROCÉDÉ HAUTEMENT EFFICACE POUR LA FABRICATION ADDITIVE
(ZH) 一种高效率的增材制造方法
Abstract
(EN) The present invention belongs to the technical field related to additive manufacturing. Disclosed is a highly efficient method for additive manufacturing, comprising the following steps: (1) providing a forming device, the forming device comprising a forming cylinder and a plurality of scrapers; (2) sequentially arranging and numbering the plurality of scrapers, and separately adjusting the distances between the plurality of scrapers and a reference surface of the forming cylinder to be multiples of corresponding serial numbers of the thicknesses of powder layers; (3) sequentially starting to spread powder using the plurality of scrapers according to the corresponding serial numbers while a plurality of high-energy beams respectively scan and form powder spread by the plurality of scrapers, so that powder spreading and scanning processing are synchronously carried out until the processing of a predetermined number of layers is completed; (4) after the forming cylinder is lowered by multiples of a predetermined number of thicknesses of the powder layers, continuing to spread powder and perform scanning processing again until the processing of a predetermined number of layers is completed, and lowering the forming cylinder again; and (5) repeating steps (2)-(4) until integral forming is completed. The present invention improves the forming efficiency and the forming quality.
(FR) La présente invention appartient au domaine technique lié à la fabrication additive. L'invention concerne un procédé hautement efficace pour la fabrication additive, comprenant les étapes suivantes : (1) fournir un dispositif de formage, le dispositif de formage comprenant un cylindre de formage et une pluralité de racleurs ; (2) agencer et numéroter de façon séquentielle la pluralité de racleurs, et régler séparément les distances entre la pluralité de racleurs et une surface de référence du cylindre de formage pour être des multiples de numéros de série correspondants des épaisseurs des couches de poudre ; (3) commencer de façon séquentielle à étaler de la poudre à l'aide de la pluralité de racleurs en fonction des numéros de série correspondants tandis qu'une pluralité de faisceaux à haute énergie balaient respectivement et forment une poudre étalée par la pluralité de racleurs, de telle sorte que l'étalement de poudre et le traitement de balayage sont réalisés de manière synchrone jusqu'à ce que le traitement d'un nombre prédéterminé de couches soit terminé ; (4) une fois que le cylindre de formage est abaissé par des multiples d'un nombre prédéterminé d'épaisseurs des couches de poudre, continuer à étaler la poudre et effectuer un traitement de balayage à nouveau jusqu'à ce que le traitement d'un nombre prédéterminé de couches soit achevé, et abaisser à nouveau le cylindre de formation ; et (5) répéter les étapes (2)-(4) jusqu'à ce que le formage intégral soit terminé. La présente invention améliore l'efficacité de formage et la qualité de formage.
(ZH) 本发明属于增材制造相关技术领域,其公开了一种高效率的增材制造方法,方法包括以下步骤:(1)提供成形装置,成形装置包括成形缸及多个刮刀;(2)依次对多个刮刀进行排序编号,并分别将多个刮刀与成形缸的基准表面之间的间距调整为粉末层层厚的对应编号倍数;(3)多个刮刀按照对应的编号依次先后开始进行铺粉,同时,多个高能束分别对多个刮刀铺设好的粉末进行扫描成形,由此铺粉与扫描加工同步进行,直至完成预定个数层的加工;(4)成形缸下降粉末层层厚的预定个数倍后,继而重新铺粉及扫描加工,直至完成预定个数层的加工,成形缸再次下降;(5)重复步骤(2)-(4),直至完成整体成形。本发明提高了成形效率及成形质量。
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