Lerch
Well-Known Member
Hi all
Im working on a knife for my brother in law, 8" skinner CPM 154. My first time working with CPM 154, i dont know if i was just imagining it but it seemed to grind alot easier than 440c, and get hot quicker but cool faster.
anyway tonight i heat treated by heating to 1400 and letting set for 30min then 1950 for 45 min. Then plate quench until fully cooled. Here is where my question is, I put the blades in my dry ice/acetone slurry for the night and i plan on double tempering at 500 for two hours tomorrow.
should i have tempered once, then cryo, then double temper, or ihave i dont it right this time?? i just dont know what the best recipe is here.
thanks
steve
Im working on a knife for my brother in law, 8" skinner CPM 154. My first time working with CPM 154, i dont know if i was just imagining it but it seemed to grind alot easier than 440c, and get hot quicker but cool faster.
anyway tonight i heat treated by heating to 1400 and letting set for 30min then 1950 for 45 min. Then plate quench until fully cooled. Here is where my question is, I put the blades in my dry ice/acetone slurry for the night and i plan on double tempering at 500 for two hours tomorrow.
should i have tempered once, then cryo, then double temper, or ihave i dont it right this time?? i just dont know what the best recipe is here.
thanks
steve