I'm hoping this is the correct subforum-
Anyway, I've mostly used to coal, but recently I built an insulating brick propane forge. I've noticed that my steel looks a bit burned on the outer, thinner parts after repeated heats. It crinkly like it's being oxidized (I guess it is).
The thing is, I'v got it dialed to the point where there are dragon flames just starting to come out the opening. Shouldn't this indicate a reducing atmosphere in the forge, and thus the steel shouldn't be oxidizing? Perhaps?
The forge is built with a single forced air burner that is in the center of the forged and aimed directly down at the silicon carbide floor. Is excess oxygen simply hitting the steel in the "hot spot"? Any thoughts? do other people experience this?
Thanks,