Induction Products

Induction Heating Equipment Manufacturer: Power Supplies, Brazing Systems and Melting Furnaces

OPDEL is an induction heating equipment manufacturer supplying solid-state induction power supplies, brazing systems and induction melting furnaces to jewellery manufacturers, precious-metal refiners, casting houses and general engineering plants. The induction range covers power supplies from 5 kW to 35 kW output, hand-held and robot-mounted brazing systems, air-cooled and water-cooled heat stations, and melting furnaces from a 1 kg desktop unit up to multi-hundred-kilogram industrial installations. Every system is supplied with standard or custom-designed induction coils matched to the specific part, alloy and cycle time the customer runs.

This page is the entry point to the induction product line. If you already know whether you need a power supply, a brazing cell or a melting furnace, jump straight to the model pages linked in each section below — those carry the model-level specification tables.

Induction power supplies

The power supply is the part of the system that determines what you can heat and how fast. OPDEL designs and manufactures induction heating power supplies from 5 kW to 35 kW for annealing, bonding, brazing, carbide tipping, casting, melting and soldering, built around the Smart Power System modular platform with the Direct Digital Step™ control algorithm.

Two families cover most requirements:

• Opdel Heat S5 Series — 5 kW single-phase induction heater. A compact 5 kW unit running on a 230 V ±10% single-phase supply, available in a standard-frequency version (OPS-5/200, OPT-5/200) and a higher-frequency version (OPT-5/400) for shallow, surface-critical work . It supports both air-cooled and water-cooled remote heat stations, offers power control in 1% increments from 1% to 100%, and can be specified with a 5″ colour touchscreen, RS-485, data logging and an automation upgrade kit.
• Opdel SO Air Series — 24 kW and 32 kW air-cooled power supplies. Built on SiC MOSFET switching, running 5–25 kHz through the OHS-32A forced-air heat station. Because the heat station is air-cooled, there is no chiller loop to install, which removes a significant part of the site preparation cost. A variable-ratio transformer and configurable capacitor bank give a wide load-matching range across different coil geometries.

For plasma torch work rather than induction, the IGBT-based plasma power supply is a separate constant-current switching supply with a 150 V, 10–400 A variable DC output.

Induction brazing systems

Induction brazing replaces the flame torch with a coil that heats only the joint. The induction brazing machine range covers three levels of automation:

• OPSOLO UBRZ hand-held induction brazing system — a hand-held gun on flexible leads, driven by an OPSOLO power supply at 12, 16 or 24 kW through the HS-24B water-cooled heat station . Standard C-shape ceramic-coated coils are available in 12 mm, 24 mm and 40 mm sizes, in 2-turn and 3-turn options. This is the direct substitute for a torch operator working varied assemblies.
• OPSOLO ROBRZ automation-ready brazing head — the same power supply platform with a 4.5–5 kg automation unit designed to mount on a robot arm or fixture. It accepts 0–10 V or 4–20 mA external control, digital I/O for remote start/stop, and RS485 (MODBUS) for remote monitoring and data logging. Optional dual-colour pyrometer and coil-positioning laser sensor.
• OPSOLO DRGN 24 cobot brazing cell — a 24 kW system integrated with Universal Robots UR5, UR5e, UR10 and UR10e cobots for fully automated multi-joint brazing. Cycle time is 3 to 10 seconds per joint depending on tube size and alloy. It brazes copper-to-copper, copper-to-steel, brass-to-copper and aluminium tube, and is used on refrigerator compressors, heat exchangers and HVAC assemblies. The system logs the energy applied to each joint and compares it against a reference value, so every joint is quality-checked as it is made.

Induction melting furnaces

Melting is the largest part of the induction range and is documented model by model:

At the top of the range, the OPUM ITC uses modular Induction Cube technology: up to four furnaces can run from a single power supply with a combined output up to 400 kW, covering 20 kg to 900 kg of steel or 40 kg to 1300 kg of brass.

Specifications

Only verified published figures are listed here. Model pages carry the full tables.

Additional gaps that need OPDEL’s confirmation before publication:

Why buyers move to induction

The commercial case is not “faster heating” in the abstract — it is the line items a plant manager can measure:

• Metal loss and oxidation. Heat is generated inside the workpiece rather than washed over it by a flame, so there is less surface oxidation and scaling. On precious metals that difference goes directly to yield.
• Cycle time. Heat is applied only where it is needed and only for as long as it is needed. On the DRGN 24 cell that is a documented 3 to 10 seconds per joint.
• Repeatability. Power, time and frequency are set numerically and stored as programs. The same joint is made the same way on the night shift as on the day shift, and the energy delivered can be logged and compared against a reference.
• Labour and skill dependency. A torch braze is a skill; a stored induction program is a setting. That shortens operator training and reduces scrap during ramp-up.
• Running cost. Only the workpiece is heated, so there is no soak loss into a furnace chamber or standing loss between parts. There is no gas cylinder handling, no propane storage and no open flame in the workspace.
• Safety and floor space. Flameless operation removes open-flame hazard and the compact power supply and heat station take less floor area than an equivalent oven.

If you want the physics rather than the commercial case — eddy currents, penetration depth, coil design, flux concentrators and how to calculate the power you need — see how induction heating works.

Applications and users

Across the induction line, systems are used for metal forging and billet preheating, induction hardening of gears, shafts and bearings, brazing and soldering, metal melting, shrink fitting of bearings and couplings, and preheating for tube and pipe welding.

The buyers are typically jewellery manufacturers and precious-metal refiners melting gold, silver and platinum; HVAC and refrigeration plants brazing copper tube and heat exchangers; automotive suppliers brazing fuel injector, sensor and hydraulic components; electrical manufacturers joining busbars and contacts; carbide tool makers; and aerospace and medical subcontractors working precision assemblies in high-performance alloys.

Frequently asked questions

How do I choose the right power rating? Power is driven by the material, the mass or joint size, the target temperature and the throughput you need per hour. Method: find the energy absorption rate for your material, multiply by your target kg/hour, then divide by the equipment efficiency to get the required input power — the induction heating guide sets out the calculation. Send OPDEL a part drawing, the alloy, the target temperature and the parts-per-hour figure and the sizing can be done for you.

How is frequency selected, and does it matter? It matters more than power rating for surface-critical work. High frequencies (roughly 100 kHz to 1 MHz) give shallow penetration and suit surface heating and small brazed joints; medium frequencies suit general industrial heating; low frequencies penetrate deepest and suit through-heating of larger workpieces. This is why the brazing systems run at a higher frequency than the SO Air melting-oriented systems, which run 5–25 kHz.

What electrical supply and cooling do I need on site? It depends on the family. The S5 Series runs on 230 V single phase. The SO Air and OPSOLO systems are 380/480 VAC three phase. The SO Air heat station is forced-air cooled with no water loop. The OPSOLO HS-24B heat station is water-cooled and needs a minimum flow of 8 LPM with inlet water no warmer than 35 °C.

Are induction coils included, and can they be made for my part? Systems are supplied with standard or custom-designed induction coils. Standard C-shape ceramic-coated coils for the UBRZ gun come in 12 mm, 24 mm and 40 mm sizes with 2-turn and 3-turn options. Coil design has a direct effect on heating efficiency, heat distribution and coil life, so custom geometries are developed against the actual part.

Can these systems be integrated with a PLC or robot? Yes. The ROBRZ and DRGN 24 systems support analogue and digital I/O, 0–10 V or 4–20 mA external power control, remote start/stop, and RS485 (MODBUS) for remote control, monitoring, data logging and diagnostics. Temperature control uses a K-type thermocouple or an optional IR pyrometer. Machine vision integration for dynamic coil positioning is available on the DRGN 24.

Do you provide installation, commissioning and operator training?

What about spare parts and service, including export markets?

What is the lead time and the warranty?

Request a quote

Send the part or the process, not just a power figure — the material, part geometry or melt capacity, target temperature, cycle time and throughput, and your available electrical supply. That is enough to size the power supply, select the heat station and frequency, and design the coil.

Get in touch through the OPDEL contact page to discuss a requirement, request the full specification sheets for any model above, or arrange a process trial. OPDEL operates fully equipped laboratories for testing and developing complete solutions to a customer’s specific application, including custom induction heaters and turnkey installations.