Any Pop's ProCut Dialogue?

Interesting, I don't have a dog in this hunt but now i'm curious about the outcome, I do love a good mystery and metallurgy intrigues me.
It's times like this I remember my father telling me as a young boy, that "nature always sides with the hidden flaw"...sage wisdom that.
I'd like to ask Crag the Brewer Crag the Brewer by any chance before shipping for heat-treat did you ever clean the metal with chlorinated brake parts cleaner?
 
texpat said:
Interesting, I don't have a dog in this hunt but now i'm curious about the outcome, I do love a good mystery and metallurgy intrigues me.
It's times like this I remember my father telling me as a young boy, that "nature always sides with the hidden flaw"...sage wisdom that.
I'd like to ask Crag the Brewer Crag the Brewer by any chance before shipping for heat-treat did you ever clean the metal with chlorinated brake parts cleaner?
Click to expand...

I don't think so....?
I do have a bottle in the shop, but it's not my go to....

I use nail polish remover (acetone) a lot.
To remove my marking dye.

Sometimes isopropyl
 
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Were the blades soaked in acid for a long period of time? Someone did mention hydrogen embrittlement in the thread and Hoss said it isn't an issue with this steel. However many years ago after a flood I soaked a whole bunch of tools in vinegar and some I had to leave over the weekend and I lost about $1k worth do to hydrogen embrittlement and the pieces literally splitting in half on their own. The "chrome vanadium" tools were okay but all of the hex style bits were ruined. Those are generally something like 8670 which is close to procut. These tools were snap on, craftsman, mac, matco, and benchtop tool brands. I usually won't descale anything more than overnight for fear of this and will usually run another temper cycle after to drive out any hydrogen if there was some.
 
S obsessed said:
Were the blades soaked in acid for a long period of time? Someone did mention hydrogen embrittlement in the thread and Hoss said it isn't an issue with this steel. However many years ago after a flood I soaked a whole bunch of tools in vinegar and some I had to leave over the weekend and I lost about $1k worth do to hydrogen embrittlement and the pieces literally splitting in half on their own. The "chrome vanadium" tools were okay but all of the hex style bits were ruined. Those are generally something like 8670 which is close to procut. These tools were snap on, craftsman, mac, matco, and benchtop tool brands. I usually won't descale anything more than overnight for fear of this and will usually run another temper cycle after to drive out any hydrogen if there was some.
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This is why I mentioned chlorinated brake parts cleaner, it's been years since I read the paper about it, but basically it causes metal fatigue and micro stress cracks over time in steel. Usually it takes some time to happen but I wondered if that could be accelerated/exacerbated by the extreme high-temp in HT. It's just a shot in the dark, I imagine Larrin Larrin would know a lot more about it and maybe could shed light on these kinds of processes?
 
OK, I've followed this thread to the end hoping to see results that Hoss came up with. OR, perhaps still waiting for that 3rd party testing results? Did I miss it in a new thread? If so, a link in this thread would be nice. Great discussion (for the most part, and that was corrected) showing what a great group of knowledgeable folks hang out here sharing knowledge.
Ken H>
 
Ken H> said:
OK, I've followed this thread to the end hoping to see results that Hoss came up with. OR, perhaps still waiting for that 3rd party testing results? Did I miss it in a new thread? If so, a link in this thread would be nice. Great discussion (for the most part, and that was corrected) showing what a great group of knowledgeable folks hang out here sharing knowledge.
Ken H>
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Metallography has been sloooooow. We have some promising results but need to have everything first.
 
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