Electroslag Furnace Transformer – High-Power, Stable Power Supply Core for Metallurgical & Refining Industries

The electroslag furnace transformer is a specialized high-power transformer designed exclusively for electroslag remelting (ESR) equipment, serving as the core power supply component in the metallurgical industry. Widely applied in the production of high-quality alloy steels, precision alloys, superalloys and special non-ferrous metals, it is favored by metallurgical enterprises, alloy processing factories and precision manufacturing industries worldwide for its stable output, strong overload capacity and excellent temperature control performance. This transformer is tailored to meet the high-current, low-voltage power demand of electroslag furnaces, ensuring efficient and continuous operation of the remelting process.

1. Core Technical Parameters & Customization Options

Our electroslag furnace transformer is manufactured in strict compliance with IEC 60076 and GB 1094 international and national standards, with flexible parameter configurations to adapt to different electroslag furnace models and production scales.

Basic Technical Specifications

Rated capacity ranges from 500 kVA to 20,000 kVA, covering most production needs from small-scale precision alloy processing to large-scale metallurgical production. The high-voltage side rated voltage is 10 kV (optional 6 kV, 35 kV), and the low-voltage side adopts low-voltage, high-current design with rated voltage of 200V, 380V or customizable specifications. Rated frequency is 50Hz/60Hz, compatible with power grid standards of different countries and regions. The connection group is mainly Dyn11, which can effectively suppress harmonic interference and ensure stable power supply quality for the electroslag remelting process.

Customization Capabilities

We provide one-stop customization services according to user needs. For high-temperature and high-humidity coastal areas or dusty mining regions, we offer enhanced anti-corrosion and dust-proof treatment. For large-scale metallurgical enterprises with high overload requirements, we can customize transformers with 120%–150% overload capacity. In addition, we support customization of cooling methods, installation dimensions and protection levels to perfectly match the user’s on-site working conditions and equipment matching requirements.

2. Advanced Structural Design & Core Advantages

The electroslag furnace transformer adopts an optimized structural design, integrating high efficiency, stability and durability, with outstanding performance in all aspects.

High-Efficiency Energy-Saving Design

The core is made of high-permeability cold-rolled silicon steel sheet with an optimized step-lap structure, minimizing no-load loss and no-load current, with overall efficiency reaching over 98.5%. The winding uses high-purity oxygen-free copper wire, with tight winding and advanced vacuum impregnation process, effectively reducing load loss and saving energy consumption for long-term operation. The low-loss design not only reduces production costs for enterprises, but also meets the global green energy-saving and environmental protection requirements.

Reliable Insulation & Cooling System

Adopting oil-immersed insulation structure, the transformer uses high-quality mineral insulating oil or optional FR3 natural ester eco-friendly insulating oil, with excellent insulation performance and heat dissipation effect. The fully sealed corrugated oil tank can automatically adjust the volume with temperature changes, isolating the transformer oil from air and moisture, avoiding oil oxidation and aging, and extending the service life of the transformer. The cooling system supports natural oil circulation (ONAN) and forced oil circulation (OFAF) options; the forced cooling mode is suitable for high-load continuous production scenarios, ensuring stable operation without overheating even under long-term full load.

Strong Overload & Short-Circuit Resistance

The winding adopts a reinforced structure, with strong mechanical strength, capable of withstanding the impact of short-circuit current and avoiding winding deformation or damage. The transformer is equipped with a complete set of protection devices, including gas relays, pressure relief valves and temperature controllers, which can monitor the operating status in real time, issue alarms or cut off power automatically in case of overheating, oil leakage or gas accumulation, effectively protecting the transformer and electroslag furnace equipment.

3. Main Application Scenarios

The electroslag furnace transformer is widely used in various high-precision alloy production and metallurgical refining scenarios, with strong adaptability to different working conditions:

• High-Quality Alloy Steel Production: Used in the production of bearing steel, gear steel, mold steel and other high-quality alloy steels, ensuring uniform composition and excellent mechanical properties of the steel through stable power supply.

• Precision & Superalloy Production: Applied in the remelting of nickel-based superalloys, titanium alloys and other precision alloys, which are widely used in aerospace, automotive and high-end equipment manufacturing fields.

• Special Non-Ferrous Metal Processing: Suitable for remelting and refining of copper alloys, aluminum alloys and other non-ferrous metals, improving the purity and performance of non-ferrous metal materials.

• Large-Scale Metallurgical Enterprises: Adapt to the high-load continuous production needs of large metallurgical plants, with stable power supply to ensure uninterrupted production.

4. Core Competitive Advantages

Compared with ordinary power transformers, our electroslag furnace transformer has obvious competitive advantages, creating higher value for global users:

• Strong Professional Matching: Tailored for electroslag furnaces, with low-voltage, high-current design perfectly matching the power demand of electroslag remelting, avoiding power waste and unstable operation caused by mismatched parameters.

• High Stability & Long Service Life: Strict quality control, use of high-quality raw materials and advanced production processes, each transformer undergoes strict factory testing with 100% qualification rate and service life of over 30 years.

• Low Maintenance Cost: The fully sealed structure and high-quality insulating oil reduce the frequency of failures and maintenance; the global universal spare parts supply network minimizes maintenance downtime and costs.

• Strong Environmental Adaptability: Enhanced anti-corrosion and dust-proof treatment adapts to harsh working conditions such as high temperature, high humidity and dust; supports 50Hz/60Hz frequency conversion to meet the power grid standards of different countries.

• Perfect Global After-Sales Service: We have built a complete after-sales service network in more than 100 countries and regions, providing 24/7 technical support, on-site installation guidance and timely spare parts supply to ensure continuous operation of the user’s production line.