Foundry Maintenance Software: Plan the Reline, Not the Rescue

Published on 10/21/2026 • Updated on 10/22/2026

A grey iron foundry in Rajkot melts 8 tonnes a day in two induction furnaces. On a Tuesday the furnace lining starts showing a hot spot on the lower sidewall; the melt supervisor notes it verbally and plans to patch after the next pour. The next pour never finishes: the lining lets go mid-heat, 4 tonnes of molten metal go to the pit floor, and the furnace is down for a week-long reline with a casting order already late. The hot spot had been visible for three days, in a register that nobody opens on Mondays.

This guide covers maintenance management for foundries: the furnace-centred asset mix, why refractory wear sets the maintenance rhythm, and how a ticketing habit moves the melt supervisor's observations into maintenance before the metal moves first. For the general maintenance workflow, our guide to the maintenance ticketing system covers the basics; this article is about the foundry's specific machinery.

The asset mix around the furnace

A foundry's maintenance map radiates from the melt shop. The furnaces themselves wear refractory linings by heat count and coils by electrical life. The charging, pouring and material handling equipment (cranes, ladles, monorails, conveyors) fails mechanically under heat and dust. The moulding line, sand plant and shot blasting machines wear by throughput in a sand-and-dust environment that eats bearings. And the dust extraction and cooling water systems protect everything else while quietly clogging and scaling themselves.

What this mix means for the maintenance system:

• Refractory life is counted in heats. Lining inspection and patch decisions belong to a per-heat log, not a monthly calendar, and the log must reach maintenance daily.
• Dust is the common enemy. Bearings, motors and sensors across the sand plant and moulding line fail on dust-driven schedules that cleaning rounds hold in check.
• Water systems fail silently. Cooling water for coils and panels scales and clogs; the failure shows up as an electrical trip at the worst possible heat.
• The melt supervisor is the early-warning system. Lining condition, coil noise, water flow, crane brake feel: these observations exist every shift and die at the shift change without a ticket.

Register vs AMC contract vs a ticketing system

Most foundries run a maintenance register in the electrical room and lean on the furnace OEM's AMC for the melt shop; everything else is reactive. The comparison shows where each lands when the audit or the insurer asks for maintenance evidence.

Setting it up in three moves

Refractory, heat and the PM rhythm

The foundry's PM rhythm is set by three clocks. The heat clock runs the furnaces: lining checks, patch decisions, coil and panel inspections. The shift clock runs the daily and weekly items: crane checks, water system readings, cleaning rounds in the dust zones. The calendar clock runs the slow items: monorail structure inspection, electrical panel thermography, AMC vendor visits. A ticketing system holds all three against the right assets and turns each due item into a ticket the day shift inherits from the night.

The discipline that makes it stick is the close-out: what was done, which parts, one photo. Six months later, the foundry can answer the questions a register never could: lining life by furnace and ramming crew, which crane's brakes wear fastest, and whether the extraction plant's filter changes have kept pace with production.

Reader Q&A

Bottom line

This week, ask the melt supervisor to list every observation from the last five days that never reached maintenance. The lining notes on that list are the difference between a planned reline and a pit full of metal.

This quarter, put the furnaces on heat-count PM, the cranes on weekly checklist tickets, and the sand plant on asset history. The metric to watch is emergency relines and unplanned furnace stoppages per quarter; as it falls, on-time casting delivery climbs with it.