(19)

(11)

EP 0 139 649 A1

(12)

(43) Date of publication: 08.05.1985 Bulletin 1985/19 (21) Application number: 83902908.0 (22) Date of filing: 05.09.1983

(51) International Patent Classification (IPC):  C22C 38/ 00( . ) F16F 1/ 02( . ) C22C 38/ 14( . ) (86) International application number: PCT/SE1983/000310 (87) International publication number: WO 1984/000981 (15.03.1984 Gazette 1984/07)

(84) Designated Contracting States: AT BE DE FR GB LU NL SE (30) Priority: 06.09.1982 SE 19820005037 (71) Applicant: SSAB Svenskt Stal AB S-103 26 Stockholm (SE)	(72) Inventors: ANDERSSON, Björn, Hugo S-582 24 Linköping (SE) GRIP, Carl, Erik S-951 59 Lulea (SE) HAGSTAD, Erik, Bertil, Jörgen S-951 47 Lulea (SE) (74) Representative: Wärulf, Olov  Svenkst Stal S-613 01 Oxelösund S-613 01 Oxelösund (SE)