Schwabische Huttenwerke Gmbh

Carl-zeiss-stiftung

Shw Casting Technologies Gmbh

Bernd Eppli

Heinz-Michael Zaoralek

Eugen Weimer

Erich Vomhoff

Herbert Gross

Norbert Schafer

Eberhard Rossow

Juergen Krueger

Lutz Krodel-Teuchert

Mario Wipprecht

Ulrich Severing

Markus Rieck

Julien Tenelsen

A roller body for a roller for treating a material, preferably a web material, which is cast from an iron base alloy which forms a radially interior zone () of the roller body () made of grey cast iron (GJS, GJV) and, around the interior zone (), a circumferential rim zone () which includes the outer circumference of the roller body () and exhibits a surface hardness which is greater than 400 HV, wherein the circumferential rim zone () consists of ribbon grain or superfine ribbon grain pearlite (P) with embedded free graphite, preferably spheroidal graphite (SG) or vermicular graphite (V), or of an intermediate structure (ADI) with spheroidal graphite or vermicular graphite.

Roller body for a roller for treating a material and method of manufacturing a roller body

A roller for thermally treating web-shaped media, comprising a roller body which is rotatable about its central longitudinal axis, and peripheral bores introduced in axial parallel in the roller body, for conveying a heating medium, wherein other axially parallel balancing bores are formed in the roller body in addition to the peripheral bores for the heating medium, said balancing bores running from an end face of the roller body towards the center of the roller body.

Roller

In a group of rolls for a calender for processing material webs, comprising at least two rolls each having a roll body made of a cast or forged iron material, at least one of the roll bodies consists of chilled cast iron or shell-chilled cast iron. One or more rolls may have a cover of a resilient material, such as a polymeric plastic. Although it is possible for the outer diameters of the rolls to differ, the sag of the rolls when they are supported only in their rolling-contact bearings is substantially equal. In order to produce appropriate rolls, following the essential machining steps of the roll bodies, that is to say, for example, following casting, following preliminary turning, following preliminary boring and, if appropriate, following the introduction of peripheral bores, the actual mean modulus of elasticity of the entire roll body is measured and, as a function of this, in particular the inner diameters of the central bores are produced. In addition, methods for influencing the sag of the rolls in a deliberate way, by selecting appropriate materials, the relationships of material structures in the roll body or by means of the deliberate introduction of ballast into the central bore or else into separate peripheral bores in the roll bodies, are described.

Roller group

Peripherally drilled roll for the treatment of web material

A detector is disclosed which includes an elliptical hollow mirror and a tube having a reflecting inner surface for conducting the light emitted by a specimen under investigation in a scanning electron microscope. A vacuum window is seated at the outer end portion of the tube directly ahead of a receiver.

Cathodoluminescence detector utilizing a hollow tube for directing light

Growing community of inventors

Koenigsbronn, Germany

Bernd Eppli