Proper handling and maintenance of crucibles can prevent physical and thermal
damage and extend their operational use. DIDIER FINCK, DIETER HEUMANNSCKAEMPER, BRETT FIDDES AND RAMDAS CHITALKER, MORGAN MOLTEN METAL SYSTEMS, WALLINGFORD, CONNECTICUT
C
rucibles with a long ser- vice life allow managers to plan longer produc-
tion campaigns, schedule crucible replacement with minimal downtime and reduce replacement frequency. Further, mindful crucible care avoids dangerous incidents of failure occur- ring during use. While service life
42 | MODERN CASTING September 2011
depends on the manufacturer and product quality, metalcasters also can extend service life though proper crucible care. For the best results, your crucible should be the right one for your application. Crucible choice depends on: • specific alloy or range of alloys;
• type of furnace; • melting and holding temperatures; • rate of temperature change; • how the crucible is charged; • fluxes; • how slag or dross is removed; • how the crucible is poured. Once the crucible is purchased and delivered, it’s up to you to properly care
Maximize
Your Crucible’s Service Life
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