IGBT Induction Heating
Induction energy heats the metal charge directly. Electromagnetic stirring supports a more uniform molten bath before the crucible is removed for pouring.
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cdocastBuy Gold Melting Machine with the most advanced technology in China
The CDOCAST CDO-FL26 to CDO-FL31 series combines the induction heating head, solid-state power supply and cooling-water pump in one compact cabinet. This integrated gold melting machine is designed for 4–15 kg gold batches and compatible silver, copper, brass and bronze applications.
Core features for compact installation, controlled melting and manual crucible pouring.
Induction energy heats the metal charge directly. Electromagnetic stirring supports a more uniform molten bath before the crucible is removed for pouring.
The furnace head, induction power supply and main controls share one cabinet, reducing floor-space requirements and simplifying workshop layout.
The integrated pump supports connection to a suitable cooling-water circuit. A matching water chiller is recommended for frequent or extended operation.
K-type temperature measurement is listed as optional. Confirm the measuring method, range and process requirement before the furnace is configured.
Two views of the stationary induction furnace and manual-lift crucible arrangement.
Standard CDO-FL models cover 4 kg, 5 kg, 6 kg, 8 kg, 10 kg and 15 kg maximum gold capacity. The compact integrated cabinet is intended for workshops where a separate power-supply cabinet would occupy unnecessary space.
The furnace body remains stationary. After melting, trained personnel use suitable crucible tongs and protective equipment to lift the graphite crucible vertically and pour the molten metal into a prepared mold.
A clear operating sequence for the stationary non-tilting gold melting furnace.
Compare power, gold and silver capacity, melting time, dimensions and crucible sizes across all six CDO-FL models.
| Specification | CDO-FL26 | CDO-FL27 | CDO-FL28 | CDO-FL29 | CDO-FL30 | CDO-FL31 |
|---|---|---|---|---|---|---|
| Applicable metals | Gold, silver, copper, brass, bronze and compatible alloys | |||||
| Voltage | Three-phase, 380 V, 50/60 Hz | |||||
| Power | 15 kW | 20 kW | 20 kW | 25 kW | 25 kW | 30 kW |
| Gold capacity | 4 kg | 5 kg | 6 kg | 8 kg | 10 kg | 15 kg |
| Silver capacity | 2 kg | 2.5 kg | 3 kg | 4 kg | 5 kg | 8 kg |
| Typical melting time | 2–5 min | 3–6 min | 3–6 min | 5–8 min | 5–10 min | 5–10 min |
| Listed maximum temperature | 1800°C | 1800°C | 1800°C | 1800°C | 1800°C | 1800°C |
| Temperature measurement | Optional K-type temperature measurement | |||||
| Water pump | Equipped | |||||
| Machine weight | 72 kg | 75 kg | 78 kg | 78 kg | 78 kg | 100 kg |
| Dimensions (L×W×H) | 500×500×860 mm | 500×500×860 mm | 500×500×860 mm | 500×500×860 mm | 500×500×860 mm | 650×630×900 mm |
| Graphite crucible | Φ85×Φ60×136.5 mm | Φ100×Φ70×135 mm | Φ105×Φ70×155 mm | Φ115×Φ78×183 mm | Φ125×Φ90×183 mm | Φ150×Φ96×210 mm |
| Quartz sleeve | Φ100×Φ80×136 mm | Φ120×Φ90×135 mm | Φ120×Φ94×153 mm | Φ132×Φ106×180 mm | Φ143×Φ112×182 mm | Φ150×Φ132×207 mm |
Melting time is a reference range, not a guaranteed cycle. Actual time and usable process temperature depend on the model, metal, batch weight, charge size, starting temperature, power supply, crucible and quartz sleeve specifications, cooling conditions and operating settings. Confirm voltage and material requirements before ordering.
Match consumables and auxiliary equipment to the selected model and production schedule.
Each standard model uses a specified graphite crucible and quartz protective sleeve. Review the dimensions in the parameter table or the CDOCAST graphite crucible page before ordering replacements.
The built-in pump must be connected to a suitable cooling circuit. For frequent production, use a correctly sized industrial water chiller.
The CDO-FL series is designed for compatible metals within the selected model, crucible and operating specifications.
Choose the model by metal, maximum batch weight, production frequency and site utilities.
CDO-FL26 is the standard 4 kg gold melting machine, while CDO-FL30 and CDO-FL31 cover maximum 10 kg and 15 kg gold batches. Intermediate 5 kg, 6 kg and 8 kg induction gold melting machine configurations are also available.
Final selection should consider silver capacity, actual cycle target, power supply and the manual crucible-handling process.
View the CDOCAST graphite crucible melting furnace catalog for model selection, machine configuration and purchasing reference.
Answers about capacity, temperature, melting time, cooling, electrical supply and operation.
CDO-FL30 is rated for a maximum 10 kg gold batch, while CDO-FL31 is rated for a maximum 15 kg gold batch. Confirm the metal, required melting time, available three-phase power, production frequency and crucible-handling process before ordering.
The standard CDO-FL26 to CDO-FL31 parameter table lists a maximum temperature of 1800°C. The usable process temperature also depends on the metal, crucible, quartz sleeve, furnace power and operating settings.
Typical melting time ranges from 2–5 minutes for CDO-FL26 to 5–10 minutes for CDO-FL31. Actual time depends on the model, metal, batch weight, charge size, starting temperature, voltage, crucible condition and operating settings.
Yes. The standard models are specified for gold, silver, copper, brass, bronze and compatible alloys. Confirm the exact alloy, batch weight and crucible requirement with CDOCAST before processing a new material.
The machine includes a water pump but still requires a correctly sized cooling-water circuit. A matching industrial water chiller is recommended for frequent or extended production to maintain stable cooling conditions.
The standard parameter table specifies three-phase 380 V, 50/60 Hz. Electrical standards vary by country and facility, so confirm the available voltage, frequency and site wiring before production.
After melting, trained personnel use suitable crucible tongs to lift the graphite crucible vertically and pour the molten metal into a prepared mold. Protective gloves, face protection and a suitable work area are required.
K-type temperature measurement is listed as an optional configuration for the CDO-FL26 to CDO-FL31 series. Confirm the required measuring method and range when requesting the machine configuration.
Send CDOCAST the metal, maximum batch weight, voltage, required production rate, cooling conditions and temperature-measurement requirement for model confirmation.