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LZ Induction Heating Systems
Precious Metal Induction Melting Furnace
Precious-metal melting needs a small, clean heat and a temperature that stops where the alloy requires it. The catalogue shows a 1 kg class gold furnace with a maximum around 1150°C, plus 15 kW and 25 kW induction melters for gold and silver. The 15 kW set is listed around 1–3 kg of gold or silver on single-phase 220 V. The 25 kW set is listed around 3–5 kg on three-phase 380 V. Frequency is about 30–100 kHz. These kilogram figures are not the kilowatt figures. Copper and other non-ferrous heats can be quoted on the same family when the crucible and the coil match the metal.
What to check before you enquire
- 1 kg class furnace, about 1150°C max in the catalogue.
- 15 kW, 220 V, about 1–3 kg gold or silver.
- 25 kW, 380 V, about 3–5 kg gold or silver.
- 30–100 kHz, water cooling 0.2 MPa.
Typical applications
- Gold
- Silver
- Copper alloys
- Small jewelry heats
Catalogue models
| Model | Capacity | Supply | Current | Frequency |
|---|---|---|---|---|
| 1 kg gold furnace | 1 kg class | 110 V class, about 1500 W | about 7 A | 50/60 Hz supply |
| JL-15 kW | 1–3 kg gold/silver | 220 V 1-phase | 37 A | 30–100 kHz |
| JL-25 kW | 3–5 kg gold/silver | 380 V 3-phase | 54 A | 30–100 kHz |
Figures are taken from the LZ catalogue. Final power, frequency and capacity depend on the metal, coil, lining, duty cycle and your mains voltage. Ask for a technical proposal before you order.
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