A furnace has no cycle. It still has a timeline.
Melting, holding and pouring identified automatically from the furnace's own behaviour — plus energy per tonne and the holding-time share most foundries have never measured.
An induction melting furnace has no cycle in the sense a machine tool does, no part counter and frequently no controller worth reading. What it does have is an electrical load that varies enormously with what the furnace is actually doing — and that is enough to build a complete operational picture from.
MachineWise distinguishes melting, holding and pouring automatically from the furnace's own electrical behaviour. The plant does not configure thresholds and does not need to understand the method; what it gets is a timeline of what the furnace did, all shift, every shift.
Machine signals, an energy meter and sensors, on one timeline.
Every induction furnace can carry all three. Each tonne is recorded with the energy it took and the condition of the machine that made it.
What the machine is doing
- State: melting, holding, pouring, idle
- Heats and batches with start and end
- Temperatures through the cycle
- Stops with reasons from the operator
What it costs to run
- kW, kWh, kVA and power factor, live
- Energy per tonne, per shift and per job
- Idle energy: power drawn while producing nothing
- Maximum demand and load profile
How healthy it is
- Condition sensors connected where they matter
- Per-machine baselines, not generic limits
- Alerts before a trend becomes a breakdown
- Readings stored against every tonne
Sensors typically connected on a induction furnace
An energy meter connection is available on every machine type we monitor. Sensors are chosen per machine at the pilot, and connected by the MachineWise team. See energy monitoring and condition monitoring.
| State | What it represents | Why it matters commercially |
|---|---|---|
| Melting | The furnace is doing the work it exists to do | The only state that converts energy into product |
| Holding | Metal at temperature, waiting | Consumes power continuously and produces nothing. The classic foundry loss. |
| Pouring | Metal being tapped or transferred | Short, and useful for tying heats to downstream moulding |
| Idle | Furnace available and not in use | Distinguishes a scheduling problem from a capacity problem |
States are determined automatically from the furnace's electrical behaviour. No thresholds are set by the plant and none need to be maintained as the furnace ages or the charge mix changes.
Holding time as a share of powered time
Metal held at temperature while a mould line is not ready is pure cost. Most foundries suspect it is significant and have never measured it.
Energy per tonne melted
Per furnace and per shift, trended. It moves with charge mix, lining condition and operating practice, and it is the foundry's clearest efficiency signal.
Heat cycle time
Charge to tap, compared across shifts and crews on the same furnace. Differences are practice, not physics.
Furnace availability against the mould line
Whether the constraint is melting capacity or downstream readiness. These need different investments and are routinely confused.
A furnace holding metal is drawing substantial power to produce nothing, and it happens because something downstream is not ready — a mould line stopped, a ladle unavailable, a crane occupied. The furnace is the visible cost and rarely the cause.
Measuring holding as a distinct state, with its duration and its energy, converts an argument between the melting section and the moulding line into an arithmetic question. Once holding hours per shift and energy per tonne are on a screen that both sections can see, the conversation changes character — which is usually worth more than any single efficiency improvement to the furnace itself.
A smart energy meter at the furnace supply, plus any existing signals worth reading — the temperature controller, a tilt or pour indication, a charge-door contact. Where a PLC governs the installation, its tags can be read directly.
Installation is scheduled around a planned stop and does not modify the furnace, its power supply or its control. The gateway is optically isolated, which on a foundry floor is not a specification nicety.
What does one tonne cost in electricity?
With an energy meter on the induction furnace, this is measured for every shift and job. Until then, estimate it here with your own numbers.
Values are pre-filled with a typical induction furnace. Replace them with yours; nothing you type is stored or sent.
Idle energy is usually the fastest saving: it needs a switch-off rule, not capital. The meter shows it per machine, per shift.
Two furnaces on a live dashboard this week.
Thirty days on one furnace will report your holding-time share and energy per tonne — two figures most Indian foundries have never had in front of them.
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