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To compensate for the decrease in the salt bath, I always have a layer of broken up carbon arc rods on the surface of my salt tank. I use a neutral salt in my tanks, and cannot fathom why your company would use cyanide salt baths..... that's nothing but a death trap..... HIGHLY TOXIC!
With the type of salts I use, it has the advantage of absorbing the carbon from the arc rods as it needs it, keeping itself in a neutral state.
What I don't understand is why your company goes to all the trouble, expense, and danger when about the best you can hope for is basically a "case hardening" effect on the steel..... and there are much cheaper and safer ways to do that.
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