Ladle Refining Furnace Transformer

Prioritize Stability and Precision Over Impact Resistance:

The refining process demands prolonged, stable arc heating. While these transformers do not endure frequent short-circuit impacts from molten metal collapse like EAF transformers, their load is continuous and relatively steady. Design emphasis lies on high reliability, high efficiency, and precise power control.

Higher Secondary Voltage, Lower Secondary Current:

Since refining involves burying electrodes in the shallow slag layer for submerged arc heating, the arc length is short and stable, requiring higher voltage to maintain power. Consequently, compared to equivalent-capacity electric arc furnace transformers, refining furnace transformers operate at higher secondary voltage and lower secondary current.

Long-Term Continuous Operation Capability:

Steel refining per furnace may last 30-60 minutes or longer. Transformers must operate continuously at full or near-full load throughout this process, demanding exceptional thermal stability from cooling systems and insulation materials. Oil-forced, water-forced (OFWF) cooling remains the most mainstream and reliable option. Typically employing F-class or H-class insulation, it permits higher temperature rises to accommodate sustained high-temperature operation.

The LF furnace transformers produced by our company have reached the international advanced level in terms of performance. We adopt independently developed designs and processes, which can ensure that the transformers have a service life of no less than 30 years.We have unique technical advantages in improving the axial stability of transformer coils, preventing the aging of transformer oil and seals. In the appearance design, the product structure is compact, and various transformer control lines are connected to a unified junction box with their uses indicated, making it aesthetically pleasing and easy to operate.