Anti Scale Coatings

I use that stuff often. There's still a layer of decarb to deal with that is avoidable with foil. I've never tried the 2000f limit, have only used it up to 1500. It's no good for normalizing and thermal cycling as it will only last a single heat.
 
I use foil for normalizing, etc and the liquid compound for hardening. With any of those, you have to be careful of blobs. They will cause pitting.
 
In my experience they won't spare you a little bit of decarburation you'll have to deal anyway after.
They will prevent scale for sure. But i am talking about carbon steels, not stainless
 
I used the Brownell anti scale coating recently. Did some 154 cm at 1900F. The coating seemed to work pretty good. I did find one thing out though. I did a couple of touch ups on the coating and forgot to bake it at 200 F like it says in the instructions. I put my blades in the oven and heat treated them. I did have scale, the only place it was evident was the edge of the touch up spot that I put in. I think if I would have remembered to bake it again it would have came out great. Tough lesson to learn. Maybe next time I will thin it out with some water and dip the blades so I get a nice even uniform coat.
 
I've been using ATP-641 for high carbon steel
edit - oh I see, it's the same thing :-)
yes I'm using that
 
Official distributor for Czech and Slovak republic is AZ Prokal company (www.azprokal.cz). Site is in czech but surely will communicate in english. Use this email servis(at)azprokal.cz.
 
chumaman said:
http://www.nozirske-oceli.cz/condursal-z1100-0
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Just received some Condursal Z1100 and tried it, instead of the ATP 641 I've been using for some time now. This is much easier to apply, I just dip the steel and hang it to dry for a while. This will give me the perfect thickness layer of protection.

I've only tried it on O1 steel so far, but I'm liking the results. Almost no decarb at all. The clean up was quick. I'm going to try it on stainless soon and we'll see if I can avoid the foil.

Thanks J Jesenius and C chumaman for the tip!
 
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A quick follow up. I've tried it on some stainless 14C28N now. Same magic, no fiddling with foil. Just a dip and hang to dry. Then into the oven followed by quench plates. My blades came out very nice, no thick layers of decarb/scale, and the hardness was on point.

The whole process feel more clean-cut without the foil. And speaking of cuts, no more of those either. ;)

The only downside is the rather strong odour, but my ventilation takes care of it pretty quickly.

So I strongly recommend the use of Condurzal Z1100! :thumbsup:
 
currenthill said:
...The only downside is the rather strong odour, but my ventilation takes care of it pretty quickly.

So I strongly recommend the use of Condurzal Z1100! :thumbsup:
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It is acetone based meaning it can be diluted with acetone when it becomes more viscous. And for longer blades You can spray it or use microfiber roller for painting. I use 6 cm wide.
 
olymon said:
I used the Brownell anti scale coating recently. Did some 154 cm at 1900F. The coating seemed to work pretty good. I did find one thing out though. I did a couple of touch ups on the coating and forgot to bake it at 200 F like it says in the instructions. I put my blades in the oven and heat treated them. I did have scale, the only place it was evident was the edge of the touch up spot that I put in. I think if I would have remembered to bake it again it would have came out great. Tough lesson to learn. Maybe next time I will thin it out with some water and dip the blades so I get a nice even uniform coat.
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I just finished writing a long reply and it magically disappeared--must have hit something. I'll keep this short! We are a DIY site for knife-makers (www.bellablades.com). I have been testing a different process for prevention of decarb and scale that provides incredible results! In the past we first used powder, then we tried clay. Both worked, but there was still minor decarb and scale, requiring more surface finishing, especially for hardness testing. We do a lot of testing, and publish papers on our results for the DIY community. My latest paper addresses this different approach for dealing with decarb and scale and provides results of the tests. It is cheap (less than $5 at Home Depot) and I know it gives great results on O1 tool steel (1460° F) and in our home-made electric furnace. I still have more tests to run, but take a look. So far, so good. It would be nice to find out what other steels and processes it works well with. I hope this helps.
 
RAT Pack said:
I just finished writing a long reply and it magically disappeared--must have hit something. I'll keep this short! We are a DIY site for knife-makers (www.bellablades.com). I have been testing a different process for prevention of decarb and scale that provides incredible results! In the past we first used powder, then we tried clay. Both worked, but there was still minor decarb and scale, requiring more surface finishing, especially for hardness testing. We do a lot of testing, and publish papers on our results for the DIY community. My latest paper addresses this different approach for dealing with decarb and scale and provides results of the tests. It is cheap (less than $5 at Home Depot) and I know it gives great results on O1 tool steel (1460° F) and in our home-made electric furnace. I still have more tests to run, but take a look. So far, so good. It would be nice to find out what other steels and processes it works well with. I hope this helps.
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Now that is interesting!
 
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