Schwabische Huttenwerke Gmbh

Hans-Friedrich Neuhoffer

Erich Vomhoff

Wolfram Rittweger

The present invention is a method for forming grooves in rolls which are suitable for working web-like materials, wherein a laser source directs a laser beam and an aligned conduit directs a pressurized gas jet onto the roll surface, the roll material thus being removed in a sharply defined area and a groove thereby being formed.

Method for forming grooves in roll surfaces

A heatable glazing or calendering roll has a roll body, peripheral bores in the roll body for the passage of a fluid heat carrier, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier in at least one flange journal and cutouts for the distribution of the fluid heat carrier from the supply conduits to the peripheral bores and from the peripheral bores to the discharge conduits; the cutouts are disposed in the end faces of the or each flange journal and are bordered on the opposite side by the planar end face of the roll body.

Heatable glazing or calendering roll

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.

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Konigsbronn, Germany

Hans-Friedrich Neuhoffer