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(11)

EP 2 152 925 A1

(12)

(43) Date of publication: 17.02.2010 Bulletin 2010/07 (21) Application number: 08710282.8 (22) Date of filing: 12.02.2008

(51) International Patent Classification (IPC):  C22C 27/06(2006.01) C22B 34/32(2006.01) C22B 5/10(2006.01) C22B 1/10(2006.01) (86) International application number: PCT/IN2008/000087 (87) International publication number: WO 2008/142704 (27.11.2008 Gazette 2008/48)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 24.05.2007 IN KO08022007 (71) Applicant: Tata Steel Limited Jamshedpur 831 001 (IN)	(72) Inventors: KAPUR, Gajanan, U. Jamshedpur 831 001 (IN) TATHAVADKAR, Vilas, D. Jamshedpur 831 001 (IN) RAO, Saripalli, M. Jamshedpur 831 001 (IN) (74) Representative: Pawlyn, Anthony Neil  Urquhart-Dykes & Lord LLP Tower North Central Merrion Way Leeds LS2 8PA Merrion Way Leeds LS2 8PA (GB)