Roll or roller – Circumferential sectors or segments
Patent
1993-12-28
1995-03-28
Hughes, Tom
Roll or roller
Circumferential sectors or segments
492 58, 298952, 298953, B30B 300
Patent
active
054012325
ABSTRACT:
A method for manufacturing a cylindrical mantle of rolls or cylinders of a paper machine out of a corrosion-proof metal or alloy material, particularly refined steel, in which oblong plate blanks are cut to a length equal to the total length of the roll mantle to be manufactured. The plate blanks are machined or bent to mantle portions of a cross-sectional shape equal to a part of a circular ring. Out of the mantle portions, the cylindrical mantle of a roll or cylinder is assembled by joining the mantle portions together by means of axial welding joints prepared by electron-beam welding performed in the vacuum chamber of an electron-beam apparatus by using a number of mantle portions per one roll mantle. A roll or cylinder manufactured by the method is also described.
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Marks, "Standard Handbook for Mechanical Engineers", 8th Edition, McGraw Hill Book Company, pp. 13.48-13.51.
Hughes Tom
Valmet Paper Machinery Inc.
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