Description

In a recently completed research project, 48 wires were prepared by varying the carbon content, type of melting, type of patenting, chemical drawing preparation, single cross-section reduction, and drawing speed. This paper gives an overview of 1. the changes of characteristic values for the mechanical properties determined by torsion and tensile tests during storage and depending on heat treatments, 2. an automated detection of cracks along the wire-length which is based on the torsion-testing-curve, and 3. the correlation between the variation of wire strength parameters and the variation of geometry of springs and other components.