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1. (WO2018230568) POWDER MIXTURE FOR POWDER METALLURGY AND METHOD OF MANUFACTURING SAME
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Pub. No.: WO/2018/230568 International Application No.: PCT/JP2018/022447
Publication Date: 20.12.2018 International Filing Date: 12.06.2018
IPC:
B22F 1/00 (2006.01) ,B22F 1/02 (2006.01)
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
1
Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
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
1
Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
02
comprising coating of the powder
Applicants:
JFEスチール株式会社 JFE STEEL CORPORATION [JP/JP]; 東京都千代田区内幸町二丁目2番3号 2-3, Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo 1000011, JP
Inventors:
宇波 繁 UNAMI Shigeru; JP
大矢 正人 OYA Masato; JP
Agent:
杉村 憲司 SUGIMURA Kenji; JP
Priority Data:
2017-11826616.06.2017JP
2018-08550526.04.2018JP
Title (EN) POWDER MIXTURE FOR POWDER METALLURGY AND METHOD OF MANUFACTURING SAME
(FR) MÉLANGE DE POUDRE POUR MÉTALLURGIE DES POUDRES ET SON PROCÉDÉ DE FABRICATION
(JA) 粉末冶金用粉末混合物およびその製造方法
Abstract:
(EN) Provided is a powder mixture for powder metallurgy which is extremely fluidic, which can be removed from a powder compacting mold die with little force, and which suppresses mold wear during molding. The powder mixture for powder metallurgy contains a raw material powder, a binder, and a graphite powder, wherein the raw material powder contains at least 90% by mass of an iron-based powder relative to the raw material powder, the graphite powder has an average grain size of less than 5 µm, the ratio [mb/(mr + mg) × 100] of the mass of the binder (mb) to the total of the mass of the raw material powder (mr) and the mass of the graphite powder (mg) is 0.10-0.80% by mass, the ratio [mg/(mr + mg) × 100] of the mass of the graphite powder (mg) to the total of the mass of the raw material powder (mr) and the mass of the graphite powder (mg) is 0.6-1.0% by mass, the surface of the raw material powder is at least partially coated with the binder, and the surface of the binder coating the surface of the raw material powder is at least partially coated with the graphite powder.
(FR) La présente invention concerne un mélange de poudre pour la métallurgie des poudres qui est extrêmement fluide, qui peut être retiré d’une matrice de moule de compactage de poudre avec une faible force, et qui supprime l’usure du moule pendant le moulage. Le mélange de poudre pour métallurgie des poudres contient une poudre de matière première, un liant et une poudre de graphite, la poudre de matière première contenant au moins 90 % en masse d’une poudre à base de fer par rapport à la poudre de matière première, la poudre de graphite ayant une taille de grain moyenne inférieure à 5 µm, le rapport [mb/(mr + mg) × 100] de la masse du liant (mb) au total de la masse de la poudre de matière première (mr) et de la masse de la poudre de graphite(mg) étant de 0,10 à 0,80 % en masse, le rapport [mg/(mr + mg) × 100] de la masse de la poudre de graphite (mg) au total de la masse de la poudre de matière première (mr) et de la masse de la poudre de graphite (mg) étant de 0,6 à 1,0 % en masse, la surface de la poudre de matière première étant au moins partiellement revêtue avec le liant, et la surface du liant recouvrant la surface de la poudre de matière première étant au moins partiellement revêtue avec la poudre de graphite.
(JA) 流動性に極めて優れ、少ない力で圧粉成形金型から抜出すことができ、成形時の型かじりが抑制された粉末冶金用粉末混合物を提供する。 原料粉末と、バインダと、黒鉛粉とを含む粉末冶金用粉末混合物であって、 前記原料粉末が、該原料粉末の90質量%以上の鉄基粉末を含有し、前記黒鉛粉の平均粒径が5μm未満であり、前記原料粉末の質量(m)と前記黒鉛粉の質量(m)の合計に対する前記バインダの質量(m)の比率[m/(m+m)×100]が、0.10~0.80質量%であり、前記原料粉末の質量(m)と前記黒鉛粉の質量(m)の合計に対する前記黒鉛粉の質量(m)の比率[m/(m+m)×100]が、0.6~1.0質量%であり、前記原料粉末の表面が、前記バインダの少なくとも一部で被覆されており、前記原料粉末の表面に被覆された前記バインダの表面が、前記黒鉛粉の少なくとも一部で被覆されている、粉末冶金用粉末混合物。
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, 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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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: Japanese (JA)
Filing Language: Japanese (JA)