Coin Medal Minting Silver Gold Melting Induction Furnace LSZ-25 25kw 20kg Capacity IGBT Electric

This Coin Medal Minting induction melting furnace is a 25kw medium frequency IGBT machine built for mints, medal manufacturers and precious metal refiners that cast silver, gold and copper alloy blanks for coin and medal production. The LSZ-25 model melts up to 20kg of gold, silver or copper per batch, giving minting workshops enough output to feed continuous strip casting and blanking lines without the delays of torch melting. Medium frequency induction heating produces a homogeneous melt with strong electromagnetic stirring, which is essential for achieving the uniform alloy composition required in circulating coinage. Operators can adjust the working frequency within the 1-15KHz range to match different alloys and casting temperatures, ensuring repeatable results from the first melt of the day to the last.

• Mint grade melt quality: Electromagnetic stirring homogenizes silver, gold and copper alloys so every blank has consistent composition.
• 20kg batch capacity: Sufficient precious metal melting capacity for production scale coin and medal blank casting.
• IGBT inverter technology: Saves at least 20 percent energy compared with traditional SCR medium frequency furnaces.
• Stable frequency control: 1-15KHz adjustable oscillation range suits silver, gold, copper and their alloys.
• Continuous operation: The water cooled design supports long melting sessions required by minting schedules.
• Simple alloy changes: Quick crucible exchange allows fast switching between silver, gold and copper alloys.
• Factory tested: Every unit is batch melted under load before shipment to verify temperature uniformity.

Beyond coin and medal blank casting, this furnace is used by jewelry manufacturers producing silverware batches, by refiners recovering gold and silver from scrap, and by research mints testing new alloy formulas. The tilting crucible option makes it convenient to pour molten silver into ingot molds, while the compact control cabinet keeps the melting area tidy in workshops where space is shared with rolling mills and blanking presses. Central banks and private mints in developing markets use the LSZ-25 as their primary melting unit because it combines affordable running cost with the melt quality needed for official coinage.

The LSZ-25 melting furnace is delivered in a heavy duty plywood case with foam inserts, including the IGBT power cabinet, melting crucible, water cooling hoses, power cables and an illustrated operation manual. Each machine is load tested at the factory and inspected for electrical safety before packing. A one-year warranty covers the inverter module, control board and main electrical parts, with remote technical support and readily available spare crucibles, induction coils and capacitors for long service life.