Heatable glazing or calendering roll
AssigneeSchwabische Huttenwerke GmbH
InventorsHans-Friedrich Neuhoffer, Erich Vomhoff
Life of this patent
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Abstract
In a heatable glazing or calendering roll having a cylindrical hollow body with flange necks for each end of the cylindrical hollow body, a displacement body disposed in the cylindrical hollow body and supply and discharge lines for a fluid heat carrier flowing through the annular gap between the displacement body and the cylindrical hollow body, by selecting a suitable material for the flange necks and/or by corresponding thermal insulation between cylindrical hollow body and flange necks it is achieved that the flange necks on heating up of the cylindrical hollow body expand less than the cylindrical hollow body and thereby bending moments are generated in the cylindrical hollow body which counteract the oxbow deformation.
Claims7
A heatable glazing or calender roll comprising a cylindrical hollow body, a bearing journal for each end of said cylindrical hollow body, each bearing journal adapted to be secured for rotation at one end of said body and formed of metal having a coefficient of thermal expansion less than the coefficient of thermal expansion of said cylindrical hollow body, a displacement body disposed in said cylindrical hollow body and defining an annular gap between said cylindrical hollow body and said displacement body, supply and discharge lines for a fluid heat carrier which flows through said bearing journals and said annular gap between said displacement body and said cylindrical hollow body causing the temperature of said bearing journals and said cylindrical hollow body to increase with the lesser rate of radial expansion of said bearing journals secured at each end of said cylindrical hollow body generating bending moments opposing a greater rate of radial expansion at the ends of said cylindrical hollow body.
Dependencies are inferred from the claim text.