Patents by Inventor Ernst SCHACHINGER

Ernst SCHACHINGER 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).

  • Patent number: 12590346
    Abstract: A method for producing hardened steel components is provided. A sheet bar is cut from a galvanized strip made of a hardenable steel alloy. The sheet bar is cold-formed into a component blank and heated to a temperature that produces a structural change to austenite. The austenitized component blank is conveyed to a form hardening tool and is held in a form-fitting manner by an upper tool and lower tool, which have a shape essentially corresponding to that of the component blank. Due to the contact of the material of the component blank with the tools, the heat is removed from the steel material quickly enough that a martensitic hardening occurs. After the galvanization of the metal strip and before the temperature increase for achieving the austenitization, tin is applied to the surface of the strip, sheet blank, or component blank.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: March 31, 2026
    Assignee: Voestalpine Stahl GmbH
    Inventors: Ernst Schachinger, Martin Fleischanderl
  • Publication number: 20250305076
    Abstract: The invention relates to a method for conditioning the surfaces of heat-treated galvanized steel sheets or alloy-galvanized sheet steel components, wherein either a steel sheet is heated in at least some regions for the purpose of austenitization and then is formed into a sheet steel component and cooled at a speed above the critical cooling rate, or a steel sheet is first formed into a sheet steel component and then heated in at least some regions for the purpose of austenitization and after the austenitization in at least some regions, the sheet steel component is cooled at a speed above the critical cooling rate. In both cases, the surface of the sheet steel component then undergoes an airless blast cleaning, characterized in that the airless blast cleaning is carried out with an Almen intensity of between 0.05 mm N and 0.20 mm N.
    Type: Application
    Filed: September 23, 2022
    Publication date: October 2, 2025
    Applicants: voestalpine Metal Forming GmbH, voestalpine Stahl GmbH
    Inventors: Siegfried Kolnberger, Florian Gerstner, Andreas Sommer, Ernst Schachinger, Christoph Wagner, RĂ¼diger Heinritz
  • Patent number: 12344914
    Abstract: A method for producing hardened steel components is provided. Sheet bars are cut out from an alloy-galvanized strip made of a hardenable steel alloy and the sheet bars are heated to a temperature that produces a structural change to austenite, preferably to a temperature above the respective Ac3 point. The austenitized sheet bars are then conveyed to a press hardening tool in which the sheet bars are hot formed in a single stroke or multiple strokes by means of an upper and lower tool, wherein the formed sheet bar is cooled against the tools at a speed above the critical cooling rate so that a martensitic hardening occurs. After the galvanization, which can be hot-dip galvanization of the steel strip and before the temperature increase for achieving the austenitization, tin is applied to the surface of the strip or sheet bar.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: July 1, 2025
    Assignee: Voestalpine Stahl GmbH
    Inventors: Ernst Schachinger, Martin Fleischanderl
  • Publication number: 20230183832
    Abstract: A method for producing hardened steel components is provided. Sheet bars are cut out from an alloy-galvanized strip made of a hardenable steel alloy and the sheet bars are heated to a temperature that produces a structural change to austenite, preferably to a temperature above the respective Ac3 point. The austenitized sheet bars are then conveyed to a press hardening tool in which the sheet bars are hot formed in a single stroke or multiple strokes by means of an upper and lower tool, wherein the formed sheet bar is cooled against the tools at a speed above the critical cooling rate so that a martensitic hardening occurs.After the galvanization, which can be hot-dip galvanization of the steel strip and before the temperature increase for achieving the austenitization, tin is applied to the surface of the strip or sheet bar.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 15, 2023
    Applicant: VOESTALPINE STAHL GMBH
    Inventors: Ernst SCHACHINGER, Martin FLEISCHANDERL
  • Publication number: 20230145863
    Abstract: A method for producing hardened steel components is provided. A sheet bar is cut from a galvanized strip made of a hardenable steel alloy. The sheet bar is cold-formed into a component blank and heated to a temperature that produces a structural change to austenite. The austenitized component blank is conveyed to a form hardening tool and is held in a form-fitting manner by an upper tool and lower tool, which have a shape essentially corresponding to that of the component blank. Due to the contact of the material of the component blank with the tools, the heat is removed from the steel material quickly enough that a martensitic hardening occurs. After the galvanization of the metal strip and before the temperature increase for achieving the austenitization, tin is applied to the surface of the strip, sheet blank, or component blank.
    Type: Application
    Filed: March 1, 2021
    Publication date: May 11, 2023
    Applicant: VOESTALPINE STAHL GMBH
    Inventors: Ernst SCHACHINGER, Martin FLEISCHANDERL