My furnace hit 2800 degrees for the first time last shift.

I was running a new alloy mix and the temp just kept climbing past where I thought it would stop. Honestly, it made me a bit nervous about the crucible lining. Has anyone else seen a jump like that with a 60/40 copper-nickel blend?

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3 Comments

rivershah5mo ago

Ever check your thermocouple calibration?

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hannah_price795mo ago

Yeah, the whole "check your calibration" thing is huge. It's not just a one-time setup check, you know? I've seen so many readings go way off over time from normal wear and tear. If you don't have a routine to test against a known good standard, you're basically trusting a guess. That's how you end up with a process running too hot or too cold and ruining stuff. It's a simple step that saves a ton of headache later.

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oscar3902mo ago

...but here's what I'm wondering - when's the last time you actually documented the drift on yours? I mean, it's one thing to eyeball it against a known temp once in a while, but if you don't track how fast it's moving off zero you're just reacting instead of staying ahead of it. That's the part that gets me, because you can't really know if your "routine check" is frequent enough without some history to go off of. And most guys I talk to just do the check and move on, no notes, no nothing.

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