(19)
(11) EP 2 363 219 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.03.2012 Bulletin 2012/11

(43) Date of publication A2:
07.09.2011 Bulletin 2011/36

(21) Application number: 11156921.6

(22) Date of filing: 04.03.2011
(51) International Patent Classification (IPC): 
B21D 22/14(2006.01)
B21H 1/18(2006.01)
B63H 5/16(2006.01)
B21H 1/04(2006.01)
 B21D 51/18(2006.01)
B21D 53/92(2006.01)
B21D 19/04(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 05.03.2010 FI 20105218

(71) Applicant: Halikko Works Oy
24910 Halikko as. (FI)

(72) Inventor:
  • Tuomaala, Hannu
    24130 Salo (FI)

(74) Representative: Kärkkäinen, Veli-Matti 
Kolster Oy Ab Iso Roobertinkatu 23 P.O. Box 148
00121 Helsinki
00121 Helsinki (FI)

   


(54) Method for manufacturing large metallic tubular piece, and large metallic tubular piece


(57) The present invention relates to metal technology and to manufacture of large metal pieces, and in particular to manufacture of large metallic sleeve pieces, the large metallic sleeve pieces being suitable for various flow applications, such as those in marine technology and process technology, and to manufacturing methods of these large metallic sleeve pieces. The large, metallic sleeve piece of the invention comprises a sleeve structure (13), (15) made of metal plate, the inner surface of the sleeve structure being formed by means of forming rolls (7 to 12) such that the metallic sleeve piece has assumed its inwardly convex shape.







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