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cpm 3v micro cracks

L

Lupatnieks

Joined
Sep 2, 2025
Messages
1
Hi all,

First time trying cmp 3v, made 3 blades. Same bar of steel, same process of stock removal and drilling, heat treated in tool wrap at the same time and in the same kiln, tempered together. 2 blades ar ok and the 3rd one seems to have microcracks after surface grinding. What the hell? Does anyone have encountered something similar? What could be the issue? 2000 F 30 min, 347f 2x2h. Never ever had similar issues with any other steel in the same oven, stainless or high carbon.
 
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