Parallel to the AWT Hardening Congress (HK), the new Steel Innovation Conference (SI) of AWT and DGM will be held for the first time in 2022.

Thus, for the first time, two symposia and a trade fair will be held under one roof. Meet the GMH speakers at both trade fairs.

Lecture HK 2022 - Dr. Konovalov (Coordinator Application Development GMH)

Lecture title: Development of precipitation and influence of local degree of deformation on fine grain stability in 18CrNiMo7-6 after cold forming

Fine grain stability is an important system property that determines not only the service life of case-hardened components, but also the efficiency of production. In the case of a local formation of coarse grain, in addition to low fatigue strength values, high component distortion after hardening is to be expected, which can result in a high rate of rejects. In cold-pressed components, the local degree of deformation can have a decisive influence on fine grain stability. In literature, both high and low local deformations are mentioned as the cause of the formation of coarse grains. The complex interdependencies between the precipitation state and the microstructure, which are extremely important for fine grain stability and alter along the process chain, have not yet been investigated in detail.

Lecture SI 2022 – Inka Meyer (Process assurance & process technology GMH)

Lecture title: Improving the homogeneity of case-hardened steels by using advanced continuous casting technologies.

A uniform distribution of alloying elements and a resulting homogeneous microstructure in steel is essential for processing and component properties. Segregation, which occurs for physical reasons during solidification, cannot be completely avoided in large-scale production, but can be significantly reduced by modern technologies in continuous casting, such as Mechanical Soft Reduction (MSR). The application of MSR to case-hardened steels offers the potential to improve the processing and distortion properties of gear components and thus optimize yield and component properties.

The results obtained show, using different case-hardening steels as examples, that significant homogenization of the solidification structure, distribution of alloying elements and a resulting uniformity of microstructure and hardness can be achieved on the rolled bar steel. In addition to the usual methods, new methods were also used for the investigations. Initial results from industrial series production indicate that the tendency to distortion of components made from case-hardened steels treated with MSR is significantly reduced.

More informations