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grain refining 52100 after forging?

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inferno

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so about a month ago i cut up a big 52100 bearing race and flattened it. i got it pretty hot.
i knew this would make it coarse grained. and it did. then i tried doing a triple quench to see what the grain would look like.
it got finer for sure but not exactly fine.

i have many kilos of this so i want to use this steel from now on. i will be forging it.

so now i wonder what the regular way of getting 52100 fine grained after forging is?

i was thinking about getting it up slightly above hardening temp and then slow cool in vermiculite or similar or even air cool if it works.
then heat to lowest hardening temp and slow cool.
then slightly below hardening temp and slow cool.

what have you guys tried/read about that works?
 

TB_London

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Kevin Cashen did a lot of work with 52100
Worth a read:

Plus Larrin goes into some detail:

Straightforward approach included here:

Good luck
 
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