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why do we make grinding(stoning) before annealing?

why do we make grinding(stoning) before annealing?

why do we make grinding(stoning) before annealing?

(OP)
In my firm 304 ss wires(about 330 micron thickness) is annealed before grinding. What is the metallurgical story of annealing before grinding?(annealing is made at 650 C)

RE: why do we make grinding(stoning) before annealing?

(OP)
the title is wrong, sorry. it must be "why do we make annealing before grinding?

RE: why do we make grinding(stoning) before annealing?

What features are you grinding?  My guess is that it is for dimensional control.  The annealing will result in some distortion.  If you anneal first you will get better dimensional control.
Though the material would grind better (cleaner, better finish) if you ground it when it was harder.

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RE: why do we make grinding(stoning) before annealing?

How much pressure does the grinding machine put on the wire?
Perhaps there is a squeezing force during grinding that results in a small extrusion and the annealing is performed to avoid chevroning or surface cracks.

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