Company Filing History:
Years Active: 1978-1979
Title: Kurt Koerfer: Innovator in Steel Wire Technology
Introduction
Kurt Koerfer is a notable inventor based in Salzgitter-Lebenstedt, Germany. He has made significant contributions to the field of steel wire technology, holding two patents that showcase his innovative approach to improving the properties of steel wire.
Latest Patents
Koerfer's latest patents focus on methods of making steel wire adapted for cold drawing. One patent describes a process where a steel wire, after coming from the mill, is heated to a temperature between 850°C and 910°C. This is followed by a multi-stage water-cooling process that cools the surface of the wire below the martensite start temperature while retaining austenite in the core. The retained heat in the core partially tempers the martensite formed at the surface. The wire is coiled while maintaining a constant temperature, allowing the retained austenite to undergo an isothermal transformation to fine pearlite. After coiling, the wire is air-cooled to room temperature, resulting in a structure with an outer layer of tempered martensite and a core of fine pearlite, which imparts excellent cold-working characteristics.
Another patent details a similar process where the steel wire is rolled while in the austenitic range and then cooled to a temperature between 850°C and 910°C. The cooling step is designed to bring the surface temperature below the martensite start temperature in approximately 0.2 seconds. The final structure of the wire consists of fully tempered martensite on the surface and fine pearlite in the core, allowing for significant cold-working capabilities.
Career Highlights
Kurt Koerfer is associated with Stahlwerke Peine-Salzgitter AG, where he has applied his expertise in steel wire technology. His innovative methods have contributed to advancements in the manufacturing processes of steel wire, enhancing its performance and usability in various applications.
Collaborations
Koerfer has worked alongside notable colleagues such as Hans Paulitsch and Alfred Babilon, contributing to a collaborative environment that fosters innovation and development in steel wire technology.
Conclusion
Kurt Koerfer's contributions to the field of steel wire technology through his patents demonstrate his commitment to innovation and excellence. His work continues to influence the industry, providing valuable advancements in the properties and applications of steel wire.