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1. (WO2019029031) ADDITIVE MANUFACTURING METHOD FOR LEAD-FREE ENVIRONMENTALLY-FRIENDLY HIGH-STRENGTH BRASS ALLOY
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/029031 International Application No.: PCT/CN2017/110097
Publication Date: 14.02.2019 International Filing Date: 09.11.2017
IPC:
B22F 3/105 (2006.01) ,C22C 9/04 (2006.01) ,B22F 9/08 (2006.01) ,B33Y 10/00 (2015.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3
Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
10
Sintering only
105
by using electric current, laser radiation or plasma
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
9
Alloys based on copper
04
with zinc as the next major constituent
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
9
Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor
02
using physical processes
06
starting from liquid material
08
by casting, e.g. through sieves or in water, by atomising or spraying
[IPC code unknown for B33Y 10]
Applicants:
华南理工大学 SOUTH CHINA UNIVERSITY OF TECHNOLOGY [CN/CN]; 中国广东省广州市 天河区五山路381号 No.381 Wushan Road, Tianhe District Guangzhou, Guangdong 510640, CN
Inventors:
杨超 YANG, Chao; CN
赵延杰 ZHAO, Yanjie; CN
李元元 LI, Yuanyuan; CN
Agent:
广州市华学知识产权代理有限公司 GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD.; 中国广东省广州市 天河区五山路381号物资大楼首层 1st Floor Material Building,No.381 Wushan Road,Tianhe District Guangzhou, Guangdong 510640, CN
Priority Data:
201710666286.007.08.2017CN
Title (EN) ADDITIVE MANUFACTURING METHOD FOR LEAD-FREE ENVIRONMENTALLY-FRIENDLY HIGH-STRENGTH BRASS ALLOY
(FR) PROCÉDÉ DE FABRICATION ADDITIVE POUR ALLIAGE DE LAITON DE HAUTE RÉSISTANCE SANS PLOMB RESPECTUEUX DE L’ENVIRONNEMENT
(ZH) 一种无铅环保高强黄铜合金的增材制造方法
Abstract:
(EN) An additive manufacturing method for a lead-free environmentally-friendly high-strength brass alloy, the method mainly comprising the five steps of gas atomization milling, model construction, molding chamber preparation, pre-powdering, and selective laser molding, and the lead-free environmentally-friendly high-strength brass alloy being prepared according the following mass percentages: Zn 5.5-40wt.% and Si 0.5-4wt.%, the total content of the trace elements Al and Ti being 0-0.5wt.%, while the remaining is Cu; the microstructure thereof comprises micron-sized cellular crystals and dendritic crystals. By means of the foregoing method, a nearly full-density high-strength brass alloy and a near net formed complex structural component thereof may be obtained; the formed high-strength brass alloy has a beautiful color and has the physical properties of having excellent electrical conductivity, thermal conductivity, corrosion resistance, being easy-cut, and the like, and may be widely applied in bathroom fixtures, hardware decoration, radiators, electronic communication, low-temperature piping, pressure equipment and like mechanical manufacturing fields.
(FR) La présente invention concerne un procédé de fabrication additive destiné à un alliage de laiton de haute résistance sans plomb respectueux de l’environnement, le procédé comprenant principalement les cinq étapes de broyage par atomisation de gaz, construction de modèle, préparation de la chambre de moulage, pré-poudrage, et moulage laser sélectif, et l’alliage de laiton de haute résistance sans plomb respectueux de l’environnement étant préparé selon les pourcentages en masse suivants : Zn de 5,5 à 40 % en pds et Si de 0,5 à 4 % en pds, la teneur totale des éléments sous forme de traces Al et Ti étant de 0 à 0,5 % en pds, tandis que le reste est du Cu ; sa microstructure comprend des cristaux cellulaires de la taille du micron et des cristaux dendritiques. À l’aide du procédé ci-dessus, un alliage de laiton de haute résistance de densité presque complète et son constituant structurel complexe quasi formé en réseau peuvent être obtenus ; l’alliage de laiton de haute résistance formé présente une belle couleur et possède les propriétés physiques de conductivité électrique, conductivité thermique, résistance à la corrosion excellentes, est facile à couper, et similaires, et peut être largement appliqué dans les appareils de salle de bain, la décoration de matériel, les radiateurs, la communication électronique, les conduites à basse température, l’équipement sous pression et les domaines de fabrication mécanique similaires.
(ZH) 一种无铅环保高强黄铜合金的增材制造方法,所述方法主要包括气雾化制粉、模型构建、成型室准备、预铺粉、选区激光成型五个步骤,其中无铅环保高强黄铜合金按如下的质量百分比配料:Zn 5.5~40wt.%、Si 0.5~4wt.%、微量元素Al和Ti的含量总共为0~0.5wt.%、以及Cu余量;其微观结构包括微米尺寸的胞状晶和树枝晶。通过上述方法可获得近全致密的高强黄铜合金及其近净成形的复杂结构零件,成型的高强黄铜合金色泽优美,兼具优异的导电性、导热性、耐蚀性、易切削性等物理特性,可广泛应用于卫浴、五金装饰、散热器、电子通讯、低温管路、耐压设备等机械制造领域。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Chinese (ZH)
Filing Language: Chinese (ZH)