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Old 05-30-2012, 05:11 AM
Dave Bross Dave Bross is offline
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Many use SP in wire melters.

It has lots of lithium so it will melt at very low temps. if you have the time to wait it out.

Expansion changes a bit if you do that.

I've heard stories of loading up the furnace with SP and leaving it at 2000. It takes days to fine that way though.

With batch (SP) the only thing you need to go over 2170 for is to get the antimony to switch valence and eat the bubbles. You can do that for just long enough to be sure the middle of the melt has hit 2170 and then back down.

One more tech question.

Your thermocouple is sticking out into the melt chamber?

If not, you're running a lot hotter than you think.
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