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Pub. No.:    WO/2003/076096    International Application No.:    PCT/SG2003/000050
Publication Date: 18.09.2003 International Filing Date: 13.03.2003
Chapter 2 Demand Filed:    24.09.2003    
B21C 29/00 (2006.01), B21C 9/00 (2006.01), B21D 26/055 (2011.01), B21D 37/16 (2006.01), B21J 1/06 (2006.01), B21K 29/00 (2006.01), C21D 1/34 (2006.01), F27B 9/06 (2006.01), F27B 9/28 (2006.01), H05B 6/02 (2006.01), H05B 6/06 (2006.01), B21B 45/00 (2006.01), C21D 11/00 (2006.01), F27D 19/00 (2006.01)
Applicants: SINGAPORE INSTITUTE OF MANUFACTURING TECHNOLOGY [SG/SG]; 71 Nanyang Drive, 638075 Singapore (SG) (For All Designated States Except US).
HU, Bang, Hong [SG/SG]; (SG) (For US Only).
YONG, Ming Shyan [SG/SG]; (SG) (For US Only).
CHOY, Chee Mun [SG/SG]; (SG) (For US Only)
Inventors: HU, Bang, Hong; (SG).
YONG, Ming Shyan; (SG).
CHOY, Chee Mun; (SG)
Agent: AXIS INTELLECTUAL CAPITAL PTE LTD; 21A Duxton Road, Singapore 089487 (SG)
Priority Data:
200201436-3 14.03.2002 SG
Abstract: front page image
(EN)Some metals, for example magnesium alloy, require pre-heating prior to fabrication processes such as forming. A conventional pre-heating practice of placing these metals in furnaces is time-consuming. An alternative practice of pre-heating the die of a forming maching may result in shortening the lifespan of the die or lowering the productivity of a production line. The invention achieves shorter heating time and reduces thermal shock induced, by heating the metal progressively using a heating apparatus. The heating process of a metal is segregated: first, by heating a second portion of a metal by conducting heat from a first portion of the metal that is being heated, and next, by directly heating the partially heated second protion of the metal to a formable temperature.
(FR)Certains métaux tels que, par exemple un alliage de magnésium, requièrent un préchauffage avant l'exécution de procédés de fabrication tels que le formage. La pratique d'un préchauffage conventionnel consistant à placer les métaux dans un four consomme du temps. Une autre pratique de préchauffage consistant à chauffer la matrice d'une machine de formage peut entraîner un raccourcissement de la durée de vie de ladite matrice ou un abaissement de la productivité d'une ligne de production. L'invention permet de raccourcir le temps de chauffage et de réduire le choc thermique induit par le chauffage progressif du métal à l'aide d'un appareil de chauffage. Le procédé de chauffage de métal consiste d'abord à chauffer une seconde partie d'un métal par conduction de chaleur provenant d'une première partie du métal chauffé, puis à chauffer directement la seconde partie du métal partiellement chauffée afin d'atteindre une température de formage.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, 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, IT, LU, MC, NL, 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: English (EN)
Filing Language: English (EN)