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1. (WO2018180424) BLACK HEART MALLEABLE CAST-IRON AND METHOD FOR MANUFACTURING SAME
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2018/180424 International Application No.: PCT/JP2018/009527
Publication Date: 04.10.2018 International Filing Date: 12.03.2018
IPC:
C22C 37/00 (2006.01) ,C21D 5/14 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
37
Cast-iron alloys
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
5
Heat treatment of cast-iron
04
of white cast-iron
06
Malleabilising
14
Graphitising
Applicants:
日立金属株式会社 HITACHI METALS, LTD. [JP/JP]; 東京都港区港南一丁目2番70号 2-70, Konan 1-chome, Minato-ku, Tokyo 1088224, JP
Inventors:
後藤 亮 GOTO, Ryo; JP
深谷 剛千 FUKAYA, Takayuki; JP
松井 博史 MATSUI, Hiroshi; JP
松浦 健太 MATSUURA, Kenta; JP
Agent:
鮫島 睦 SAMEJIMA, Mutsumi; JP
山尾 憲人 YAMAO, Norihito; JP
Priority Data:
2017-06168027.03.2017JP
Title (EN) BLACK HEART MALLEABLE CAST-IRON AND METHOD FOR MANUFACTURING SAME
(FR) FONTE MALLÉABLE À CŒUR NOIR ET SON PROCÉDÉ DE FABRICATION
(JA) 黒心可鍛鋳鉄及びその製造方法
Abstract:
(EN) Provided is black heart malleable cast-iron wherein the time required for graphitization can be greatly reduced compared with the conventional and a method for manufacturing the same. The black heart malleable cast iron has a ferrite matrix and aggregated graphite that includes this matrix and includes at least one of (i) 0.0050 – 0.15% by mass bismuth and at least 0.020% by mass manganese and (ii) 0.0050 – 1.0% by mass aluminum and at least 0.0050% by mass of nitrogen, with a grain size number of 8.0 – 10.0 for the crystal particle size in the matrix quantified by comparison of a metal structure photograph and a standard diagram of crystal particle sizes.
(FR) Cette invention concerne une fonte malléable à cœur noir dont le temps nécessaire à la graphitisation peut être considérablement réduit par comparaison avec la fonte classique, ainsi que son procédé de fabrication. Ladite fonte malléable à cœur noir a une matrice de ferrite et du graphite agrégé qui comprend cette matrice et comprend au moins l'un de (i) 0,0050 à 0,15 % en masse de bismuth et au moins 0,020 % en masse de manganèse et (ii) 0,0050 à 1,0 % en masse d'aluminium et au moins 0,0050 % en masse d'azote, avec un indice de taille de grain de 8,0 à 10,0 pour la taille des particules cristallines dans la matrice quantifiée par comparaison d'une photographie à structure métallographique et d'un diagramme standard de tailles de particules cristallines.
(JA) 従来に比べて黒鉛化に要する時間を大幅に短縮することができる黒心可鍛鋳鉄及びその製造方法を提供する。上記黒心可鍛鋳鉄は、フェライトのマトリクスと、前記マトリクスに含まれる塊状黒鉛とを有し、(i)ビスマスを0.0050質量%以上、0.15質量%以下、及びマンガンを0.020質量%以上;並びに(ii)アルミニウムを0.0050質量%以上、1.0質量%以下、及び窒素を0.0050質量%以上;のうちの少なくとも一方を含み、かつ、前記マトリクスの結晶粒度が金属組織写真と結晶粒度標準図との比較によって数値化される粒度番号で8.0以上、10.0以下である。
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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: Japanese (JA)
Filing Language: Japanese (JA)