Full automatic Vicker measurement with image analysing systems, is one of the common used measurement systems since more then 10 years, for Case depth measurement of Carburizing –Nitriding – Surface hardening.
One of the most discussed points is the reproducibility by existing systems and beetween different systems. On examples from Industrial users will be shown the challenge which is still happen on used systems and the main points which are happen for discussions. The examples will shown the difficulties which existing, if systems are working in the accepted accuracy range of existing standards.
- History of automatic hardness testing
- Actual situation of automatic vickers case depth measurement
- Differences between ASTM and ISO Rules
- Accuracy, reliability and repeat accuracy from automatic evaluation systems vs. manual measurement
- How to calibrate a system
- How to get better results of CHD - NHD - SHD depth
- Results from round robin tests
- Practical examples
