gas forge ceramic brick

B

bill may

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Jul 30, 2014
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Hey everyone a quick question does ceramic brick hold up well against the corrosiveness of borax flux?
I'm asking mainly on a horizontal forge what is the preferred flooring that will stand up to the flux best?
 
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When I built my forges I use bubble alumina and covered the floors with that. From my Memory it's the best at resisting borax in a forge.
 
Extreme duty high alumina content hard firebricks hold up the best, the ones with 95% alumina content or so. Although I recommend getting splits or thinner to keep from adding too much thermal mass.
 
It's SOOOOOOO much easier to just use a different flux, such as kerosene. Although, fluxless should be given it's due diligence as many find excellent results without any flux at all.
 
Fred.Rowe said:
If you are using a hydrocarbon solvent, like kerosene, keeping the billet from moving while it comes to temp helps with your success. Put the billet in the forge right after soak in liquid. You don't want to move the billet after it goes into the forge, the carbon shell can crack. Try it out on a few layers of mild steel and see how the shell is formed. Its an air tight jacket and interesting to watch it form. I still use borax on occasion but if I can avoid it I would rather not.

Fred
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Personally, I dry weld everything. I don't do a lot, but I haven't had any bad welds if the surface prep is adequate.
 
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