Method for producing roll-bonded metal sheets

US11344968B2 · kind B2 · utility

Assignees

• voestalpine Grobblech GmbH · AT
• VDM Metals International GmbH · DE

Inventors

• Franz Winter · Mainz, DE
• Claudius Schindler · Gmünd, AT
• Franz-Josef Wahlers · Grafenau, DE
• Jutta Kloewer · Goldkronach, DE
• Bodo Gehrmann · Plettenberg, DE
• Heike Hattendorf · Werdohl, DE

Key dates

• Filing date: Aug 10, 2017
• Grant date: May 31, 2022
• Expiry date: Apr 12, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24967
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A roll-bonded clad metal sheet and a method for producing a roll-bonded clad metal sheet is provided. The roll-bonded clad sheet includes a metallic base material layer and a metallic cladding material layer which are joined to one another by a metallurgical bond. The metallic cladding material layer includes a nickel-based material whose chemical composition includes, in % by mass, a proportion of more than 50% of Ni and a proportion of 3.1% of Nb. The metallurgical bond is obtained by a thermomechanical rolling process including a first rolling phase for prerolling, a second rolling phase for final forming and a cooling time between the first rolling phase and the second rolling phase, wherein a final rolling temperature of the second rolling phase is set to a value equal to or less than 880° C.