Lorenz Albracht

Leibniz Universität Hannover · Institute of Metal Forming and Metal Forming Machines

Hot stamping is a well-established and frequently used manufacturing process in automotive body construction. The number of components manufactured in this way is continuously increasing. Hot stamping is used to produce components with a completely martensitic structure, resulting in high strength and hardness. These components are mainly used in s...

In the hot-stamping process, a sheet blank, usually a manganese boron steel like 22MnB5, is heated up to the austenitising temperature in a roller hearth furnace and then formed in a cooled forming tool. This leads to tensile strengths of about 1500 MPa in the formed parts. The components produced in this process are used in particular in the autom...

The heat-treatable steel 22MnB5 is used in hot stamping processes to produce high-strength body-in-white components. In this process, sheet blanks are conventionally heated in roller hearth furnaces and then hot-stamped, whereby strengths of 1,500 MPa can be achieved. Disadvantages of this process are the low plastic deformation of the material in...

In diesem Beitrag werden die Ergebnisse der sauerstofffreien konduktiven Erwärmung für das Formhärten, welches im Teilbereich A04 des Sonderforschungsbereiches 1368 behandelt wird, vorgestellt. Mit der entwickelten Prozesskammer können unbeschichtete Bleche sauerstofffrei, konduktiv erwärmt und beschichtet werden, die in einem miniaturisierten Stoß...