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- gwdlthermo@gwdl.com
Medium and small power medium-frequency induction melting equipment, suitable for melting 50-200kg of gold, silver, copper, iron and aluminum. It is compatible with vacuum/protective atmosphere/open furnace types, serving as a medium and small metal melting tool that balances efficiency and cost. With a combined structure of main unit + step-down transformer + low-voltage induction coil, it is a medium-frequency induction equipment suitable for vacuum melting, through heating of large workpieces and special heating scenarios with few-turn coils.
Main Specifications and Heating Capacity: The table below lists the maximum heating capacity of each melting furnace. For a cold furnace, the melting time per furnace is 50--60 minutes; for a hot furnace, the melting time per furnace is 20--30 minutes.
★ The medium-frequency melting furnace is used for melting materials such as steel, stainless steel, copper, aluminum, gold, and silver.
★ Medium-frequency melting has an excellent electromagnetic stirring effect, which is conducive to the uniformity of temperature and structure of the molten metal, facilitates slag floating, and reduces impurities.
★ It has a wide frequency range, from 1KHZ to 20KHZ. The induction coil and matching compensation capacitor can be designed by comprehensively considering factors such as melting capacity, electromagnetic stirring effect, heating efficiency, and noise during operation to determine the output frequency.
★ Compared with silicon-controlled medium-frequency furnaces, it saves energy by at least 20%.
★ The equipment is small in size and light in weight, with a melting capacity ranging from several kilograms to several hundred kilograms, providing a wide range of options. It is suitable for both factory production and small-volume melting in schools and research institutes.
| Model | Input Power | Output Voltage Range | Input Supply | Output Frequency | Duty Cycle |
|---|---|---|---|---|---|
| GWDL-15 | 15 kW | 70–520 V | 3-phase 380V/50-60Hz | 200 Hz–20 kHz (adjustable) | 100% (continuous) |
| GWDL-25 | 25 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| GWDL-35 | 35 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| GWDL-45 | 45 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| GWDL-70 | 70 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| GWDL-90 | 90 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| GWDL-110 | 110 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| GWDL-160 | 160 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| GWDL-240 | 240 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| GWDL-300 | 300 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| GWDL-500 | 500 kW | 70–550 V | 3-phase 380V | 200 Hz–20 kHz | 100% |
| Model | Steel / Stainless Steel | Copper / Gold / Silver | Aluminum |
|---|---|---|---|
| GWDL-15 Furnace | --- | 10 kg | 3 kg |
| GWDL-25 Furnace | 5 kg | 20 kg | 6 kg |
| GWDL-35 Furnace | 10 kg | 30 kg | 10 kg |
| GWDL-45 Furnace | 18 kg | 50 kg | 20 kg |
| GWDL-70 Furnace | 25 kg | 100 kg | 30 kg |
| GWDL-90 Furnace | 40 kg | 120 kg | 40 kg |
| GWDL-110 Furnace | 50 kg | 150 kg | 50 kg |
| GWDL-160 Furnace | 100 kg | 250 kg | 100 kg |
| GWDL-240 Furnace | 150 kg | 400 kg | 150 kg |
| GWDL-300 Furnace | 200 kg | 500 kg | 200 kg |
| GWDL-500 Furnace | 300 kg | — | 300 kg |
Cold start melting time: 50–60 mins per batch; Hot start: 20–30 mins
At GWDLTHERMO, we understand that each melting application is unique. That’s why we proudly offer tailor-made configurations to meet your specific process, capacity, and automation requirements — whether you're a research lab or an industrial manufacturer.
Contact us to configure your furnace with:
