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1. WO2020138274 - PRODUCTION METHOD FOR ADDITIVE-MANUFACTURED PRODUCT USING PURE COPPER POWDER HAVING Si COATING

Publication Number WO/2020/138274
Publication Date 02.07.2020
International Application No. PCT/JP2019/051093
International Filing Date 26.12.2019
IPC
B22F 1/00 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
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
B22F 1/02 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
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
02comprising coating of the powder
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
B22F 3/16 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
12Both compacting and sintering
16in successive or repeated steps
B33Y 10/00 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
10Processes of additive manufacturing
B33Y 70/00 2020.1
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
70Materials specially adapted for additive manufacturing
CPC
B22F 1/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties
B22F 1/0011
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties
0003Metallic powders per se; Mixtures of metallic powders; Metallic powders mixed with a lubricating or binding agent
0007Metallic powder characterised by its shape or structure, e.g. fibre structure
0011Metallic powder characterised by size or surface area only
B22F 1/02
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties
02comprising coating of the powder
B22F 1/025
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties
02comprising coating of the powder
025Metallic coating
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 10/10
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
10Formation of a green body
Applicants
  • JX金属株式会社 JX NIPPON MINING & METALS CORPORATION [JP]/[JP]
Inventors
  • 渡邊 裕文 WATANABE Hirofumi
  • 山本 浩由 YAMAMOTO Hiroyoshi
  • 澁谷 義孝 SHIBUYA Yoshitaka
  • 佐藤 賢次 SATO Kenji
  • 森岡 理 MORIOKA Satoru
  • 千葉 晶彦 CHIBA Akihiko
  • 青柳 健大 AOYAGI Kenta
Agents
  • 小越 一輝 OGOSHI Kazuteru
  • 小越 勇 OGOSHI Isamu
Priority Data
2018-24493327.12.2018JP
2019-16239005.09.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PRODUCTION METHOD FOR ADDITIVE-MANUFACTURED PRODUCT USING PURE COPPER POWDER HAVING Si COATING
(FR) PROCÉDÉ DE PRODUCTION D'UN PRODUIT FABRIQUÉ ADDITIF À L'AIDE D'UNE POUDRE DE CUIVRE PUR COMPORTANT UN REVÊTEMENT DE Si
(JA) Siの被膜を有する純銅粉を用いた積層造形物の製造方法
Abstract
(EN)
A production method for an additive-manufactured product obtained using an electron-beam (EB) additive manufacturing technique in which a first layer is formed by laying down a pure copper powder, preheating the pure copper powder, and subsequently scanning an electron beam thereupon to partially melt and solidify the same, a second layer is formed by laying down the pure copper powder anew upon the first layer, preheating the pure copper powder, and subsequently scanning the electron beam thereupon to partially melt and solidify the same, and building up layers by repeating said operation, said production method characterized in that pure copper powder having a Si coating formed thereupon is used as the pure copper powder, and the preheating temperature is at least 400°C and lower than 800°C. The present invention addresses the problem of providing: a production method for an additive-manufactured product using a pure copper powder having a Si coating formed thereupon, said method making it possible to suppress partial sintering caused by preheating the pure copper powder in EB additive manufacturing, and, when fabricating, suppress a decrease in the degree of vacuum during fabrication caused by carbon (C); and optimal additive manufacturing conditions for the pure copper powder having a Si coating formed thereupon.
(FR)
L'invention concerne un procédé de production d'un produit fabriqué additif obtenu à l'aide d'une technique de fabrication d'additif par faisceau d'électrons (EB) dans laquelle une première couche est formée par dépôt d'une poudre de cuivre pur, préchauffage de la poudre de cuivre pur, puis balayage d'un faisceau d'électrons sur celle-ci pour la faire partiellement fondre et solidifier, une seconde couche est formée par un nouveau dépôt de la poudre de cuivre pur sur la première couche, préchauffage de la poudre de cuivre pur, puis balayage du faisceau d'électrons sur celle-ci pour la faire partiellement fondre et solidifier, et accumulation de couches en répétant ladite opération, ledit procédé de production étant caractérisé en ce que de la poudre de cuivre pur sur laquelle est formé un revêtement de Si est utilisée comme poudre de cuivre pur, et en ce que la température de préchauffage est supérieure ou égale à 400 °C et inférieure à 800 °C. La présente invention aborde le problème de la fourniture : d'un procédé de production pour un produit fabriqué additif à l'aide d'une poudre de cuivre pur sur laquelle est formé un revêtement de Si, ledit procédé permettant de supprimer le frittage partiel provoqué par le préchauffage de la poudre de cuivre pur durant la fabrication d'additif par EB, et, lors de la fabrication, de supprimer une diminution du degré de vide pendant la fabrication provoquée par le carbone (C); et de conditions de fabrication d'additif optimales pour la poudre de cuivre pur sur laquelle est formé un revêtement de Si.
(JA)
純銅粉を敷き詰め、この純銅粉を予備加熱後、電子ビームを走査させて部分的に溶融、凝固させて、第一の層を形成し、その上に新たに純銅粉を敷き詰め、この純銅粉を予備加熱後、電子ビームを走査させて部分的に溶融、凝固させて、第二の層を形成し、この作業を繰り返して積層していく、EB方式の積層造形法による積層造形物の製造方法であって、前記純銅粉として、Siの被膜が形成された純銅粉を使用し、前記予備加熱温度を400℃以上800℃未満とすることを特徴とする積層造形物の製造方法。本発明は、電子ビーム(EB)方式による積層造形において、純銅粉の予備加熱による部分焼結を抑制すると共に、造形時において、炭素(C)による造形時の真空度の低下を抑制することができる、Siの被膜が形成された純銅粉を用いた積層造形物の製造方法、さらに、当該Siの被膜が形成された純銅粉に対して最適な積層造形条件を提供することを課題とする。
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