Custom copper induction coils for medium frequency melting, induction heating and vacuum induction melting furnaces — built to your drawing, your sample or your existing coil.
The induction coil is one of the core components of an induction furnace. We manufacture custom water-cooled copper induction coils for medium frequency melting furnaces, induction heating furnaces, vacuum induction melting furnaces and other industrial induction heating systems.
Each coil is engineered according to the furnace design, power supply, operating frequency, coil dimensions, number of turns, cooling requirements and installation configuration. Manufacturing follows customer drawings, samples or technical specifications.
The copper coil is treated with imported ceramic insulation material in a controlled porcelain coating process. The insulation layer isolates the water-cooled copper conductor from the surrounding furnace components, which helps reduce the risk of electrical arcing and insulation failure.
The cooling circuit is designed with monitoring for water flow and water temperature. When insufficient flow, restricted circulation or excessive temperature is detected, the protection system triggers an alarm or shuts down the power supply according to the furnace control configuration, protecting the coil from overheating.
The assembly is laid out with proper service clearances and access areas, so the coil can be inspected, maintained and replaced without dismantling the surrounding structure. Coil geometry, turns, conductor size, cooling connections and supports are all customised to the furnace.
Insulation inspection, helium leak testing, pressure testing and water flow testing are carried out before shipment, so leakage at welded joints is found in our plant rather than in your furnace.
| Product | Water-cooled induction furnace coil |
|---|---|
| Product type | Induction furnace copper coil |
| Application | Melting / heating |
| Furnace type | Medium frequency melting and heating furnace |
| Other applications | Vacuum induction melting furnace, induction heating systems |
| Conductor material | High-conductivity copper |
| Copper tube | Rectangular, round or to drawing |
| Coil structure | Multi-turn water-cooled coil |
| Cooling method | Internal water cooling through the copper conductor |
| Insulation | Ceramic / porcelain insulation |
| Insulation process | Ceramic coating and baking |
| Number of turns | To drawing |
| Coil inside / outside diameter | To drawing |
| Coil height | To drawing |
| Copper tube size & wall thickness | To drawing |
| Water inlet / outlet | Position and size to drawing |
| Lead configuration & connection | To drawing |
| Mounting structure | To drawing |
| Furnace capacity | Coil designed to the furnace, not to a fixed tonnage table |
| Power & frequency | According to the furnace design and power supply |
| Cooling flow | According to the coil design |
| Testing | Insulation test, helium leak test, pressure test, water flow test |
| Drawing service / OEM | Available |
A coil is not selected from a tonnage table. It is designed from the furnace capacity, power, frequency, charge material, furnace geometry and cooling conditions, and the final dimensions are confirmed on the drawing before production.
We manufacture induction coils to customer drawings, samples and technical specifications — replacement coils for furnaces in service, coils for new furnace projects and coils for special induction heating applications.
If no drawing exists, photos of the old coil with the main dimensions are enough for us to prepare a manufacturing drawing for your approval.
Water-cooled copper coils for melting steel, stainless steel, cast iron, copper, brass, aluminium and other alloys.
Coils for industrial induction heating systems, forging heaters and thermal processing lines.
Custom coils for vacuum induction melting and controlled-atmosphere furnace systems.
Coils for special heating equipment are built to the required heating zone and installation dimensions.
The ceramic insulation layer is inspected for insulation integrity and surface quality after baking.
Welded joints and cooling passages are checked with helium leak testing, which finds leakage paths that visual inspection cannot.
The cooling circuit is pressure tested to verify the copper tube, the welded joints and the water connections.
The passages are checked for unobstructed circulation and correct flow before the coil is packed.
Click any photo to enlarge.
Coils after ceramic coating and baking.
Terminals, water connections and supporting structure.
Forming, insulation, testing and final inspection in our own plant.
We manufacture replacement coils for melting and heating furnaces already in service. If your original coil is damaged, leaking, overheated or near the end of its life, we build a replacement to the original drawing, to measured dimensions or to the old coil itself.
Send us your coil drawing, furnace specifications or the existing coil sample. Our engineers build a water-cooled copper coil to your dimensions, turns, connections and insulation requirements.
WhatsApp: +86 188 3715 8450
Email: sales@furnacecopperparts.com