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Our main induction furnace crucible cracked on a Friday pour
It was the last pour of the week for a big order of 4140 steel, and the whole thing just gave out. We had to scramble to transfer the melt to the backup unit, losing about 15 minutes of critical temp. Anyone have a good source for a more durable 500 lb silicon carbide crucible?
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evayoung2mo ago
Our 600 pound magnesia crucible failed on a Tuesday night shift, right in the middle of a super duplex pour. The whole bottom just fell out, sent molten steel everywhere. We lost the whole heat and had to re-line the furnace. I feel your pain on that scramble. We switched to a different supplier after that, but it took three tries to find one that could handle our thermal cycles.
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max8082mo agoTop Commenter
We ended up using a custom rammed lining instead.
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anthony9897d ago
Watched a shop try rammed lining in a tilt furnace once, they ended up with severe cracking at the transition zones because the thermal expansion rates were totally different from their castable backer. The maintenance guys spent weeks grinding out stress risers before they could get back to production. Did you guys have to modify your shell or anchor system to make it work or did the rammed lining just naturally conform better than expected?
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