Heat treatment still good after machining ?
Good Morning,
New to this forum, I am a quality engineer with about 10 years of experience in the industry.
I have a question to experienced engineers here.
I have a stainless steel part that has a requirement to be heat treated AFTER machining. This supplier has found a bar that comes pre-heat-treated (to the correct parameters per our request) and they insist that after machining the heat treatment properties will still be there. This is a square bar that will be turned in the lathe at one end, to remove about 0.5 inches of material.
I understand enough about heat treatments of steels to know that this cannot be true (machining will create enough heat to change the crystalline structure of the material), but for the sake of a second opinion (and maybe I am wrong after all), can you guys please chime in and tell me if there is any way these guys are right ?
I don't think they are.
I appreciate your time, thank you for the support.
DS