Cermet sprayed coating roll with selected porosity and surface roughness
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United States of America Patent
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Apr 3, 1990
Grant Date -
N/A
app pub date -
Sep 27, 1988
filing date -
Sep 30, 1987
priority date (Note) -
Expired
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Abstract
A roll for use in rolling process is disclosed. The roll is provided with a sprayed coating of cermet in such a way that a porosity of the sprayed coating of for example a compound of tungsten carbide and cobalt and nickel-chromium cermet is selected less than 1.8% and a surface roughness Rmax of the sprayed coating is selected less than 3.0 .mu.m.
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