Non-destructive hardness / microstructure testing of heat-treated parts by mass production, with multiple frequency magnetic induction method

The English article is the sum-up of a lecture at the Heat Treat Show in Detroit, MI, in 2019.

It explains why a 100 % test by using the PMFT eddy current method on hardened parts provides a very high protection against unexpected hardness defects and material mix-up. Thus conclusions are possible with regard to case depth, hardness profile, carbon content, soft spots and other microstructural changes.

Application examples on camshafts, bolts, ball bearing balls, distance pins and special screws show the performance of the eddy current test on mass-produced products.

View whitepaper