Metal working – Method of mechanical manufacture – Combined manufacture including applying or shaping of fluent...
Patent
1986-08-08
1988-06-07
Rosenbaum, Mark
Metal working
Method of mechanical manufacture
Combined manufacture including applying or shaping of fluent...
29132, 219 761, B23K 904
Patent
active
047487364
ABSTRACT:
A press roll for a paper machine includes a cylindrical mantle formed of metal providing the roll with mechanical strength. A coating is provided on the roll mantle, the coating being partially or entirely metallic. The metallic coating is preferably formed of stainless steel containing chromium and provides for a controlled detachment of the paper web from the roll coating as well as durability, i.e., ability to withstand various strains to which the roll surface is subjected. In addition to the metallic component, the roll coating may also include a component or components of ceramic material. A method for manufacturing such a press roll includes the application of the coating to the surface of the cylindrical mantle by band welding wherein the welding admixture band is preferably in the range of between about 30 to 150 mm wide and about 0.5 mm thick. In the band welding, a ceramic admixture may be included in the welding band or, alternatively, the ceramic admixture may be alloyed into the molten weld by means of a shield powder.
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Cuda Irene
Rosenbaum Mark
Valmet Oy
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