Fluid metering roll

Details Fluid metering roll Fluid metering roll

1996-11-06

1999-01-12

Cuda, I.

Roll or roller

With specific roller exterior surface structure

Surface projections, indentations, or slits

492 53, 492 56, 2989532, B23P 1500

Patent

active

058579508

ABSTRACT:
A fluid metering roll such as an anilox roll is comprised of a tubular carbon fiber composition core having one or more metallic layers intervening between the core and a surface layer comprised of ceramic, the ceramic having outwardly opening fluid metering cells. The method of forming the roll includes steps of thermal spray applying one or more layers comprised of metal over the roll surface the layers intervening between the roll and an external ceramic coating. Characterizing features of the application method reside in each of the thermal spray applied layers being directed toward the core at a negative rake angle of from about 111/2.degree. to about 131/2.degree. and preferably 121/2.degree., the core and layers which receive the thermal spray being simultaneously cooled to about 110.degree. Centigrade or less during application of the thermal spray. The method and article are further characterized in that the coefficient of thermal expansion of the layers intervening between the core and the outermost ceramic layer form a progression whereby the intermediate layers have thermal characteristics which progressively become smaller in the outward direction.

REFERENCES:
patent: 4530140 (1985-07-01), Okamura et al.
patent: 4631793 (1986-12-01), Shintaku et al.
patent: 5324248 (1994-06-01), Quigley
patent: 5387172 (1995-02-01), Habenicht et al.
patent: 5686189 (1997-11-01), Badesha et al.

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