S30V - Foil Wrap?

As Mete says; foil wrap and plate quench. PBC is great for oil quenching steels but foil is even cleaner but not good for liquid quenching. Do not remove from foil until after plate quench. Go straight to the quench. Use as thick as reasonably possible aluminum plates ( 1/2 - 3/4 inch, there abouts). Enjoy the great S30V. Do not soak or temper too high.

rlinger
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Well I went through HT on the S90V using PBC on one & Foil on the other. I have experience using PBC regular with very good results. PBC Special didn't work out so well. I'm not sure if it was the high austinitizing temp (2105*) or improper PBC treatment. I heated the blade to 750 and coated with PBC Special, it didn't melt like regular PBC. Seeing that I wire brushed it off and heated to 850. Same result (no melt), at least not like regular PBC. I thought maybe that was just how it was supposed to look (kind of grainy rather than the melted honey look of reg.PBC), so I austinitized the 2 together (foil on 1, PBC Special on the other). I austinitized for 20 min. @ 2105* then plate quenched. The foil covered blade came out perfect. The PBC on the other hand had serious scale & pitting. It could very well be my technique as it looked to me as if the PBC almost slid right off of the coated blade. I still have faith in this stuff, PBC regular has worked excellent for me (@~1500*). 2105* is brutal though, to say the least. As Tracy mentions in the tutorial on his site "there is a learning curve". I'll come back to this thread in the near future with more PBC Special feedback using steels that require a lesser austinitizing temp and also using a revised coating method. Just for fun I ground the messed up blade (should say I tried to) . I used a brand new 36 grit S.C. belt and it just skated of of the scale. I don't know if I have ever attempted to grind anything so resistant to an abrasive, it was hard !! Check the pics out. They are pretty much self explanatory. Thanks so much to Tracy Mickley for sending the PBC Special out for testing, I thought this would be a very good test of the special due to the high temp involved. I'm anxious to hear feedback from others that are trying the PBC Special. Again. Thanks Tracy :thumbup: http://midwestknifemakers.com/vcom/index.php
 
Here are the rest of the pics :) The "almost" ;) finished knife (just a bit of clean-up to do) is a little caper/skinner, CPM S90V with Orange G10 scales.
 
That shot coming out of the furnace is way cool, David. :thumbup:
 
fitzo said:
That shot coming out of the furnace is way cool, David. :thumbup:
Click to expand...

It sure is ;). Thats one of my favorite steps in the process. My daughter took the pics for me and when the blade was coming out she said " Wo....thats cool dad ! I can see the blade right through the foil " :D Shes the other "knife nut" in the family :cool: At 14 she already has one in her pocket or around her neck.....wherever she goes....always :thumbup: :D Thats my Baby !! ;)
 
David, did you use the liquid PBC? or the dry..
I dipped mine cold.. and then let dry.
and I think they said that stuff was only good
up to 2000 deg's if I'm not wrong??
 
good report, I was waiting for ten to sign up before shipping out the samples. i think that is goofy now so i'll pack up and ship out samples this weekend to the voluteers to test this stuff that have signed up. There are 4 or 5 slots left if some one wants to try it, i'll send you a 1/3 pound. if you don't want to try it, i can sell you some HT foil...:)
 
Hi Dan , This test was done using the dry powder PBC Special, good to 2200* (according to Rose Mill Co. specs listed on their website). Tracy Mickley http://midwestknifemakers.com/vcom/index.php was giving 10 guys 1/3 lb. to try out. Like I had mentioned earlier, I still have faith that this stuff will work as advertised. I think a revised coating method is in order though. I'm going to try it on some D2 and also some CPM154CM next. I'm going to pre-heat to a bit higher temp for application next time, maybe at ~ 900* for starters. I'll be revisiting this thread in the near future with the outcome of the next battery of tests. The austinitizing temp of the S90V (@2105*) is getting near the limit of protection provided by the powder. That, coupled with my application method could be the reason for the first failure. We won't know for sure without some more testing, that's for sure. I'm pretty stubborn so this little setback is nothing ;)

And yeah Tracy, we do know the foil works. ;) BTW, that is mighty handy the way you're selling that by the foot. Some guys don't want to/need to buy an entire roll. The 20" width is really nice too. Thanks again Tracy :thumbup: :thumbup:
 
:)

My experience with PBC Special exactly ! After putting much time into a blade,
I aint going to risk it. Foil Foil Foil :)
 
David Wesner said:
come on guys :) give it a shot so we can get some more feedback. After all, its just a piece of steel ;)
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if you guys did it the old way, you'd be use to regrinding anyway ;) :p

I'll have to crank the heat up and try what I have on some 154 cm I guess.. when it cools down here some,, it's to
dang hot right now :barf: :)
 
Dan Gray said:
I'll have to crank the heat up and try what I have on some 154 cm I guess.. when it cools down here some,, it's to
dang hot right now :barf: :)
Click to expand...

Holy Smokes, you're not just a whistling Dixie Dan !! Hotter than heck here too.
That would be super to get some feedback from a very experienced maker. I'm just a pup next to many here ;) , that's why I question the outcome I had and why I'm determined to give it a few more trys.

Just curious rashid as to whether or not you scrapped out trying the PBC Special after just one failure or did you try modifying your technique and have several failures ??
 
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