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1. (WO2005106059) PARTS FOR MACHINE CONSTRUCTION AND METHOD FOR PRODUCTION THEREOF
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/106059    International Application No.:    PCT/JP2005/001738
Publication Date: 10.11.2005 International Filing Date: 01.02.2005
IPC:
C21D 9/30 (2006.01), C22C 38/00 (2006.01), C22C 38/06 (2006.01), C22C 38/60 (2006.01), F16C 3/02 (2006.01), F16C 3/06 (2006.01), F16D 3/20 (2006.01), F16D 3/22 (2006.01), F16H 55/06 (2006.01)
Applicants: JFE STEEL CORPORATION [JP/JP]; 2-3, Uchisaiwai-cho 2-chome, Chiyoda-ku, Tokyo 1000011 (JP) (For All Designated States Except US).
KUROSAWA, Nobutaka [JP/JP]; (JP) (For US Only).
OMORI, Yasuhiro [JP/JP]; (JP) (For US Only).
HAYASHI, Tohru [JP/JP]; (JP) (For US Only).
MATSUZAKI, Akihiro [JP/JP]; (JP) (For US Only).
TOYOOKA, Takaaki [JP/JP]; (JP) (For US Only)
Inventors: KUROSAWA, Nobutaka; (JP).
OMORI, Yasuhiro; (JP).
HAYASHI, Tohru; (JP).
MATSUZAKI, Akihiro; (JP).
TOYOOKA, Takaaki; (JP)
Agent: OCHIAI, Kenichiro; c/o Patent Application Dept. JFE TECHNO-RESEARCH CORPORATION 7th Floor, Yanagiya Building 1-10, Nihonbashi 2-chome Chuo-ku, Tokyo 103-0027 (JP)
Priority Data:
2004-134596 28.04.2004 JP
2004-210497 16.07.2004 JP
Title (EN) PARTS FOR MACHINE CONSTRUCTION AND METHOD FOR PRODUCTION THEREOF
(FR) ÉLÉMENTS POUR CONSTRUCTION DE MACHINE ET PROCÉDÉ DE PRODUCTION DE CEUX-CI
(JA) 機械構造用部品およびその製造方法
Abstract: front page image
(EN)Parts for a machine construction at least a part of which has been subjected to a hardening treatment, wherein old austenite grains in said hardened structure have an average grain diameter of 12 μm or less and have the maximum grain diameter of a diameter being four times the average grain diameter or less. The above parts for a machine construction exhibit a fatigue strength being further improved as compared to conventional parts for a machine construction.
(FR)Des éléments pour la construction d'une machine dont au moins une partie a été soumise à un traitement durcisseur, où les anciens grains d'austénite dans lesdites structures durcies ont une granulométrie moyenne de 12 µm ou moins et ont la granulométrie maximale d'un diamètre étant quatre fois la granulométrie moyenne ou moins. Les parties ci-dessus pour la construction d'une machine montrent une résistance à la fatigue étant largement améliorée par rapport aux éléments conventionnels pour la construction d'une machine.
(JA)従来よりも疲労強度を一層向上させた機械構造用部品を提案する。具体的解決手段は以下の通り。少なくとも一部分に焼入れを施した機械構造用部品において、該焼入れ組織を、旧オーステナイト粒の平均粒径が12μm以下かつ最大粒径が平均粒径の4倍以下であるものとする。
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)