PSA: My foreman's advice on preheating the big ladle saved a pour

Iris Adams · 2026-03-15T07:50:08.680746+00:00

Frank, the old foreman at the Toledo plant, always told us to preheat the 500-pound ladle for a full 20 minutes before a big gray iron pour, even if it felt warm. I thought it was overkill until last week when I rushed it on a job for a municipal gear casting. The metal started to freeze off early, and we almost had a cold shut. Anyone else have a specific preheat time they swear by for different alloys?

river_scott7mo ago

My uncle's old trick was a blowtorch on the spout.

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the_max6mo ago

Yeah, @emeryfox, a small rosebud tip on the spout for the last minute or two makes a real difference. It keeps that first metal from chilling and causing a run-off issue. We do it on our smaller ductile iron jobs, just a quick pass to take the chill off.

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emeryfox7mo ago

Wait, a BLOWTORCH on the spout?

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