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

US10252305B2 · kind B2 · utility

Assignees

• Daetwyler Graphics AG · CH
• ThyssenKrupp Steel Europe AG · DE

Inventors

• Karl-Heinz Kopplin · Essen, DE
• Martin Koch · Neuenbürg, DE
• Stefan Wischmann · Berlin, DE
• Friedhelm Macherey · Alpen, DE
• Folkert Schulze-Kraasch · Duisburg, DE
• Jörg Wahser · Duisburg, DE
• Guido Hennig · Wynau, CH
• Markus Resing · Vreden, DE

Key dates

• Filing date: Sep 9, 2013
• Grant date: Apr 9, 2019
• Expiry date: Oct 9, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12993
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

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 μm, 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 μm, and an arithmetic mean waviness Wsa in the range of from 0.05 to 0.65 μm. 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 μm and an arithmetic mean waviness Wsa in the range of from 0.08 to 1.0 μm.