John,
Thanks for your advice. The reason I included the stress relief after initial grind was because QQ-C-320 advises so:
QQ-C-320, paragraph 3.2.2:
“All steel parts having an ultimate tensile strength of 150,000 psi and above, which are machined, ground, cold formed or cold straightened, shall be baked at a minimum of 375 +/- 25 deg F for three hours or more prior to cleaning and plating for the relief of damaging residual tensile stresses. When peening is required, thermal stress relief shall be performed prior to shot or rotary flap peening.”
I thought it was a bit curious because it is such a low temperature, but I added it anyway. Thanks again.
