Method for the manufacture of rolls or cylinders of a paper...

Details Method for the manufacture of rolls or cylinders of a paper... Method for the manufacture of rolls or cylinders of a paper...

D - Textiles, Paper

21

F

26/198, 92/21.5

D21F 3/10 (2006.01) D21F 3/08 (2006.01)

Patent

CA 2007214

METHOD FOR THE MANUFACTURE OF ROLLS OR CYLINDERS OF A PAPER MACHINE AND ARTICLES PRODUCED THEREBY ABSTRACT OF THE DISCLOSURE A method for the manufacture of the cylindrical mantle (10) of the rolls or cylinders of a paper machine out of a corrosion-proof metal or alloy material, particularly refined steel, comprises cutting oblong plate blanks (20A) of a length equal to the total length of the roll mantle to be manufactured. The plate blanks (20A) are machined or bent to mantle portions (20) of a cross-sectional shape equal to a part of a circular ring. Out of the mantle portions (20), the cylindrical mantle of a roll or cylinder is assembled by joining the mantle portions (20) together by means of axial welding joints (14) prepared by electron-beam welding performed in the vacuum chamber of an electron-beam apparatus by using a number of mantle portions (20) per one roll mantle (10). A roll or cylinder manufactured by means of the method is also described.

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