Entwicklung des dynamischen Abschreckens in Hochdruck-Gasabschreckanlagen

摘要

A new quenching sensor was developed for measuring the quenching conditions in high-pressure gas quenching cells. This QC~3-Sensor (Quench Control in Cold Chambers) measures the cooling curve in a pre-heated sensor-head. The sensor can be used for process-monitoring, process-control and process-steering. This quenching sensor was successfully tested for the precise initiation of "dynamic quenching". The newly developed dynamic quenching consists of a gas-quench with varying quenching intensity: It was shown on simple rings and on gear wheels made of the steel grade 16MnCr5 that the dynamic quenching has the potential to reduce heat treatment distortions. Especially the spread of the geometry-changes can be reduced significantly, if the quenching intensity is lowered during quenching.