Thyssenkrupp Steel Europe Ag

Thyssen Krupp Ag

Thyssenkrupp Rasselstein Gmbh

Daetwyler Graphics Ag

Walzen-service-center Gmbh

Karl-Heinz Kopplin

Folkert Schulze-Kraasch

Stefan Wischmann

Martin Koch

Lothar Patberg

Stephan Drewes

Mark Hirt

Bernd Schuhmacher

Ingo Rogner

Friedhelm Macherey

Oliver Vogt

Torsten Herles

Hans-Gerd Weyen

Roland Meier

Benjamin Lauer

Winfried Höhn

Jörg Wahser

Guido Hennig

Markus Resing

Bodo Hesse

Udo Schulokat

An apparatus for structuring a roller surface is proposed, wherein the apparatus has a laser source and an optical system, wherein the laser source is designed for generating laser pulses, wherein the optical system has at least one beam shaper, at least one beam splitter, and a focusing unit, wherein the combination of beam shaper and beam splitter is arranged between the laser source and the focusing unit.

Apparatus and method for structuring a roller surface

A reflector for helio-thermal systems may include a metallic carrier plate and a reflective coating that is applied to the carrier plate and is constructed from at least one metallic reflective layer and at least one protective layer applied to the reflective layer. Such reflectors have high reflective capabilities, are robust in relation to mechanical stress, and can be manufactured cost effectively. Such reflectors are also lightweight and dimensionally stable due to the fact that the carrier plate may be formed from a sandwich plate having at least one nonmetallic intermediate layer disposed between an upper and lower metallic cover plate. The upper cover plate may have a smoothed surface to which the reflective layer can be applied. The smoothed surface prior to the reflective layer being applied may have an arithmetic mean surface parameter Ra of less than 0.03 &#x3bc;m. Methods for manufacturing such reflectors are also disclosed.

Reflectors for solar thermal systems and methods for producing same

A flat product made of a metal material has been provided with deterministic surface texture which has a plurality of depressions which have a depth in the range of from 2 to 14 &#x3bc;m, wherein the depressions are designed to be I-shaped, H-shaped, cross-shaped, C-shaped or X-shaped, and wherein the surface texture has a peak count RPc in the range of from 45 to 180 1/cm, an arithmetic mean roughness Ra in the range of from 0.3 to 3.6 &#x3bc;m, and an arithmetic mean waviness Wsa in the range of from 0.05 to 0.65 &#x3bc;m. A roll which is particularly suitable for producing such a flat product has a deterministic surface texture which has a plurality of overlapping dimples, which are arranged such that they delimit a double-I-shaped, H-shaped, cross-shaped, C-shaped or X-shaped material texture in the roll surface, and wherein the surface texture of the roll, measured in the direction of the roll axis, is characterized by a peak count RPc in the range of from 80 to 180 1/cm, an arithmetic mean roughness Ra in the range of from 2.5 to 3.5 &#x3bc;m and an arithmetic mean waviness Wsa in the range of from 0.08 to 1.0 &#x3bc;m.

Flat product made of a metal material and roll and method for producing such flat products

With the invention a metallic flat product can be systematically made available with such a fine, stochastic or quasi-stochastic surface texture that after a typical automotive paint application it is only minimally perceptible, if at all, by the human eye. At the same time, in the case of a surface topography constituted according to the invention, the transition between the peak plateaus and the valleys takes place via steep flanks. In this way, it is achieved that the morphology of the sheet metal surface is practically independent of the actual depth of the valleys. As a result therefore, the morphology of the sheet metal surface of a metallic flat product according to the invention is also independent of the skin-pass rate, which is obtained when the fine metal texture is produced by skin-pass rolling.

Flat product composed of a metal material, in particular a steel material, use of such flat product and roller and process for producing such flat products

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Essen, Germany

Karl-Heinz Kopplin