Considering the edge-crack sensitivity of a hot-rolled steel in forming simulation

IDDRG2016 conference on "Challenges in Forming High-Strength Sheets".

Gläsner, T.^1 ; Schneider, M.^2 ; Troitzsch, M.^3 ; Westhäuser, S.^2

Volkswagen AG, Brieffach 013/3370, Braunschweig

38112, Germany^1

Salzgitter Mannesmann Forschung GmbH, Eisenhüttenstr. 99, Salzgitter

38239, Germany^2

OSB AG for Volkswagen AG Group Research, Wolfsburg

38436, Germany^3

关键词: Characteristic value;    Chassis components;    Forming limit diagrams;    Forming simulations;    Hot rolled steels;    Metal materials;    Shear cutting;    Test components;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/159/1/012029/pdf
DOI  :  10.1088/1757-899X/159/1/012029

来源: IOP

【 摘 要 】

The formability of sheet metal materials is locally reduced by shear cutting operations, and as a result the risk of a crack during further processing is increased at the edge. Materials particularly susceptible to this are described as sensitive to edge-cracking. A procedure for quantitatively determining edge-crack sensitivity and for applying corresponding characteristic values has not been previously established. Below, two test methods and an approach for using the results in an extended forming limit diagram are presented. The producibility of a collar drawn test component as well as a chassis component is reevaluated using this extended forming limit diagram.