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ALU

Aluminium melting and holding

What it makes

Molten and held aluminium for casting.

Typical duty

700–900 °C but chemically severe: molten metal contact, and a bath line that attacks everything at it.

Where we are in it

ZonePartWhat goes wrong there
Thermocouple protectionSilicon nitride radiant tubeAttack by the melt; a failed sheath means blind temperature control
Degassing and holding elementsSilicon nitride radiant tubeElement sheath eroded at the bath line
Bath linePrecast shapesThe worst position in the furnace, attacked from both phases
Working liningDry castableMelt penetrating along curing cracks in a wet-cast lining
Launder and channelDry castablePenetration and build-up

Zone-to-part mapping shows typical arrangements. Final selection depends on your furnace and operating conditions.

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