(19)
(11) EP 1 005 926 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.07.2002 Bulletin 2002/30

(43) Date of publication A2:
07.06.2000 Bulletin 2000/23

(21) Application number: 99122944.4

(22) Date of filing: 18.11.1999
(51) International Patent Classification (IPC)7: B21B 45/06, B08B 1/02, B08B 3/04
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 30.11.1998 US 201564

(71) Applicant: Danieli Wean, a division of Danieli Corporation
Youngstown, OH 44501 (US)

(72) Inventors:
  • Feldbauer, Stephen L.
    Jackson Center, PA 16133 (US)
  • Scott, Robert
    Massillon, Ohio 44656 (US)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
80538 München
80538 München (DE)

   


(54) Process and apparatus for cleaning metal strip


(57) A process and apparatus for cleaning metal strip without the use of pickling acids, including an uncoiler (1), a leveller (2) capable of removing substantially all dimensional irregularities from the strip, and a cleaner (3), including at least one grinder unit, brushing unit and polishing unit, for removing surface oxide from the strip. Tension is applied to the cleaned strip to enhance material handling and control and to facilitate leveling. The cleaned strip may be treated (5) with acid to remove ground surface material and to condition the strip. Such strip, having a reduced surface roughness of about 5 to 30 microinches, is suitable for many post-processing operations.






Search report