(19)
(11) EP 0 293 508 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.04.1989 Bulletin 1989/17

(43) Date of publication A2:
07.12.1988 Bulletin 1988/49

(21) Application number: 87113970.5

(22) Date of filing: 24.09.1987
(51) International Patent Classification (IPC)4: B22D 11/04, B22D 11/14
(84) Designated Contracting States:
ES FR GB

(30) Priority: 05.06.1987 JP 140999/87

(71) Applicant: NIPPON KOKAN KABUSHIKI KAISHA
Tokyo 100 (JP)

(72) Inventors:
  • Yamamura, Minoru c/o Patent & License and Quality
    Marunouchi Chiyoda-ku Tokyo (JP)
  • Tsuru, Masahiro c/o Patent & License and Quality
    Marunouchi Chiyoda-ku Tokyo (JP)

(74) Representative: Ritter und Edler von Fischern, Bernhard,Dipl.-Ing. et al
Hoffmann, Eitle & Partner, Patentanwälte, Postfach 81 04 20
81904 München
81904 München (DE)


(56) References cited: : 
   
       


    (54) Method for fitting a break ring to mold in horizontal type continuous casting and apparatus therefor


    (57) A method for fitting a break ring (6) between a mold (5) and a feed nozzle (4), the molding being horizontally fitted to the lower part of the side wall of a tundish (1) of a horizontally type continuous casting apparatus through a front nozzle (3) and the feed nozzle, which comprises the steps of:
        allowing a movement of a break ring in horizontal direction by a thermal expansion in a beginning stage of horizontal continuous casting; and
        imparting a compressive stress to the outer peripheral portion of said break ring for reducing a tensile stress during casting. The compressed force is added by a pull cylinders connected to the mold through piston rod.







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