Patents by Inventor Franz-Josef WAHLERS

Franz-Josef WAHLERS has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing roll-bonded metal sheets
    Patent number: 11344968
    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.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: May 31, 2022
    Assignees: voestalpine Grobblech GmbH, VDM Metals International GmbH
    Inventors: Franz Winter, Claudius Schindler, Franz-Josef Wahlers, Jutta Kloewer, Bodo Gehrmann, Heike Hattendorf
  • METHOD FOR PRODUCING ROLL-BONDED METAL SHEETS
    Publication number: 20210078098
    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.
    Type: Application
    Filed: August 10, 2017
    Publication date: March 18, 2021
    Inventors: Franz WINTER, Claudius SCHINDLER, Franz-Josef WAHLERS, Jutta KLOEWER, Bodo GEHRMANN, Heike HATTENDORF