Patents Assigned to BWG Butzbacher Weichenbau Gesellschaft mbH & Co. KG
  • Method for producing high-strength track element and track element thus obtained
    Patent number: 6315844
    Abstract: The invention relates to a high-strength steel track element, and process of making the steel track element by rolling and heat treating. The steel comprises: 0.3-0.6% C, 0.8-1.5% Si, 0.7-1.0% Mn, 0.9-1.4% Cr, 0.6-1.0% Mo, balance iron and smelting-related impurities. The steel has a bainitic basic structure, a tensile strength of at least 1600 N/mm2 and a technical yield strength of at least 1250 N/mm2.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: November 13, 2001
    Assignee: BWG Butzbacher Weichenbau Gesellschaft mbH & Co. KG
    Inventors: Gerhard Ratz, Walter Kunitz