kelvin2164
Well-Known Member
- Joined
- May 10, 2014
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I've been doing some more cast iron castings. Skim the slag off the top, ok, but after pouring, there is a huge amount of slag stuck to the bottom of the crucible.
A few questions. Is this actually slag? Can I add something like borax to act as a flux. I thought all the slag would float to the top? Why is it at the bottom. And how do I get it out without breaking the pot (see pic).
I believe slag has a large silica content. I've been putting the cut off feeders and sprues back in the pot, after cleaning. Could this be a problem, getting a bit too much sand in the mix.
A few questions. Is this actually slag? Can I add something like borax to act as a flux. I thought all the slag would float to the top? Why is it at the bottom. And how do I get it out without breaking the pot (see pic).
I believe slag has a large silica content. I've been putting the cut off feeders and sprues back in the pot, after cleaning. Could this be a problem, getting a bit too much sand in the mix.