(19)

(11)

EP 0 728 052 A1

(12)

(43) Date of publication: 28.08.1996 Bulletin 1996/35 (21) Application number: 95900018.0 (22) Date of filing: 10.11.1994

(51) International Patent Classification (IPC):  B22D 11/ 06( . ) B22D 11/ 128( . ) C21D 9/ 52( . ) C23C 26/ 00( . ) C23D 5/ 00( . ) C23D 17/ 00( . ) B21B 9/ 00( . ) B21B 45/ 06( . ) B22D 11/ 12( . ) C21D 1/ 70( . ) C23C 24/ 08( . ) C23C 30/ 00( . ) C23D 5/ 04( . ) B21B 1/ 46( . ) B21B 45/ 00( . ) (86) International application number: PCT/AU1994/000689 (87) International publication number: WO 1995/013156 (18.05.1995 Gazette 1995/21)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 11.11.1993 AU 1993PM02352 (71) Applicants: Ishikawajima-Harima Heavy Industries Co., Ltd. Chiyoda-ku, Tokyo 100 (JP) BHP STEEL (JLA) PTY Ltd Melbourne, Victoria 3000 (AU)	(72) Inventors: GORE, Leslie George Balgownie, NSW 2519 (AU) ASSEFPOUR-DEZFULLY, Massoud Beaumaris, VIC 3193 (AU) (74) Representative: Lerwill, John, et al  A.A. Thornton & Co. Northumberland House 303-306 High Holborn London, WC1V 7LE London, WC1V 7LE (GB)