Electroslag furnace transformer for ESR Alloy Steel Refining-10kV or 35kV

Electroslag furnace transformer is a specialized single-phase power supply for electroslag remelting (ESR) furnaces, engineered with reactor-free construction and low-impedance characteristics for high-purity alloy steel production.

Designed to deliver stable low-voltage output throughout the extended arc-free electroslag process, it meets the stringent power requirements of ESR applications including aviation bearing steel, superalloys, resistance alloys, precision alloys, and large high-quality ingot casting.

The water-cooled construction ensures reliable thermal management during continuous remelting cycles, while multi-mode voltage regulation adapts to varying process demands. Each unit undergoes full factory routine and type tests to guarantee long-term operational safety.

Technical Advantages

• Reactor-free design — Unique arc-free electroslag process eliminates the need for series reactors

• Low no-load voltage & low impedance — Optimized for stable slag remelting with minimal voltage drop

• Multi-mode voltage regulation — Supports no-excitation, excited off-load, and on-load tap changing for process flexibility

• Single-phase configuration — Standard single-phase power supply matched to ESR furnace requirements

• Specialty alloy capability — Powers production of aviation bearing steel, superalloys, resistance alloys, precision alloys, and high-quality ingots

• Robust water-cooled construction — Efficient thermal management for extended remelting cycles

Technical Parameters

Environmental Conditions

• Ambient temperature: −25 °C to +45 °C

• Altitude: ≤ 1000 m (de-rating required above 1000 m)

• Relative humidity: ≤ 90% (non-condensing)

• Installation: Indoor (with ventilation) or outdoor (weatherproof enclosure)

• Seismic withstand: 0.2 g (horizontal), 0.1 g (vertical) per GB/T 13540

Applications of Electroslag Furnace Transformer

It is specially used as the power supply for electroslag furnaces in the production of aviation bearing steel, superalloys, resistance alloys, precision alloys, certain non-ferrous metals, etc. It can also be used to produce large high-quality alloy steel ingots, large slab ingots or slabs, and other special shaped castings.