Nadca 207

I keep coming across attempts to apply Nadca 207 to die casting dies. It’s been almost 26 years since I met Corwyn Berger of Bodycote, one of the co-authors of Nadca 207.

I come across this as a forensic expert when dealing with unexpectedly low tool life, when dealing with cracked parts, or when auditing a heat treatment or tool shop. Everyone tries to bring their know-how to it, but above all they try to bend Nadca 207 a little to their own image by taking the path of least resistance. Here they forgo the incoming material inspection in Class 1, there they try to reduce the cooling rate, because the deformations are important, they adapt the quenching temperature to their habits, even though they may be completely wrong, or they adjust the tempering temperatures to their own liking, and on top of that they choose a furnace where there is no possibility of measuring the core temperature  of the insert with a batch thermocouple to see how the tempering temperature develops. That is really laughable for several ton blocks…

And so if you are interested, you can find my e-learning courses here. It contains everything I have learned in those 26 years.

https://www.jstconsultancy.cz/e-learning/?lang=en

And the motto: there is no point in repeating mistakes when others have already made them for us.