Monitoring Process Upsets in Production Heat Treating and other Thermal Processing Applications

摘要

This paper presents the results of two case studies involving both induction heat treating and thermal plasma coating operations for which it is shown that serious upsets in process parameters (e.g.; temperature and quench time) which result in substandard quality may be more reliably detected non-invasively using state-of-the-art eddy-current pulsed eddy-current methods than is the case with destructive or invasive mechanical hardness measurements.