(19)
(11) EP 1 184 094 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.12.2004 Bulletin 2004/52

(43) Date of publication A2:
06.03.2002 Bulletin 2002/10

(21) Application number: 01103675.3

(22) Date of filing: 23.02.2001
(51) International Patent Classification (IPC)7B21B 31/02, B21B 31/20
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 29.08.2000 JP 2000258529

(71) Applicant: Hitachi, Ltd.
Chiyoda-ku, Tokyo 101-8010 (JP)

(72) Inventors:
  • Harako, Takehisa
    Hitachi-shi, Ibaraki 316-0032 (JP)
  • Hashimoto, Tadashi
    Hitachi-shi, Ibaraki 316-0032 (JP)
  • Kinose, Ryohei
    Hitachi-shi, Ibaraki 316-0076 (JP)

(74) Representative: Beetz & Partner Patentanwälte 
Steinsdorfstrasse 10
80538 München
80538 München (DE)

   


(54) Rolling mill and rolling method


(57) In a rolling mill in which hydraulic apparatus (12;13), for controlling the roll balance or the shape of the rolled material are incorporated in movable frames (10;11) provided separately from roll chocks (4;5) mounted at each end of the rolls (1,2), reducing the roll inclination thereby making it possible to carry out stable rolling, and also reducing the roll vibrations, and making it possible to manufacture products with a high quality. Providing hydraulic apparatus (12 and 13) for controlling the roll balance and the shape of the rolled material inside the movable frames (10 and 11), hydraulic apparatus (16 and 17) that push and restrict the roll chocks (4 and 5) and the movable frames (10 and 11) in the direction of flow of the rolled material relative to the roller stand (3), and the hydraulic apparatus (18 and 19) that push and restrict the movable frames (10 and 11) in the up/down direction relative to the roller stand (3).







Search report