Flatness measuring and measuring of residual stresses for a metallic flat product

US10081041B2 · kind B2 · utility

Assignee

• Primetals Technologies Austria GmbH · AT

Inventors

• Rainer Burger · Augsburg, DE
• Ansgar Grüss · Erlangen, DE
• Helmut Hlobil · Ansfelden, AT
• Peter Hunt · Manhattan, US
• Robert Linsbod · Linz, AT

Key dates

• Filing date: Nov 25, 2013
• Grant date: Sep 25, 2018
• Expiry date: Nov 25, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21B2261/06
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and apparatus for flatness measuring and measuring of residual stresses in a metallic flat product (1): The method includes bending the flat product (1) in a bending device (3) such that a planar flat product (1) forms an arc (5) with a target bending radius r0 after bending; measuring the contour and the actual bending radii r(y), in the region of the arc (5) of the bent flat product (1) at a plurality of positions along the width direction of the flat product (1); and determining the flatness of the flat product (1) taking into account the measured contour of the bent flat product (1).