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Two general rules that come up time and time again in industrial heat treating discussions, are:
#1. The end use application of a part or component dictates it's heat treatment.
#2. Use the slowest possible quenching medium necessary to achieve the desired structures and/or properties.
Here’s a good article that talks about the problems associated with heat treating,… quench cracking, thermal gradients, stress risers etc. It even talks about differential or selective hardening to minimize or suppress distortion and cracking. It also talks about choosing appropriate quenching mediums etc.
http://www.getottenassociates.com/pdf_files/6072_0192_224_web.pdf
#1. The end use application of a part or component dictates it's heat treatment.
#2. Use the slowest possible quenching medium necessary to achieve the desired structures and/or properties.
Here’s a good article that talks about the problems associated with heat treating,… quench cracking, thermal gradients, stress risers etc. It even talks about differential or selective hardening to minimize or suppress distortion and cracking. It also talks about choosing appropriate quenching mediums etc.
http://www.getottenassociates.com/pdf_files/6072_0192_224_web.pdf
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