Continuous Type Heating Furnace For Steel

Operation Mode

● Continuous charging and discharging with stable production rhythm

● Steady thermal regime, with furnace temperature fields maintained quasi-constant over time

● High productivity, suitable for integration with continuous rolling or forging lines

Furnace Structure and Material Transport

● Unidirectional material flow along the furnace length

● Mechanical conveying systems, such as walking beam, pusher, or roller hearth mechanisms

● Longitudinal zoning, dividing the furnace into functional thermal sections

Thermal and Control Features

● Zoned temperature control, typically including preheating, heating, and soaking zones

● Controlled combustion, using gaseous or liquid fuels with precise air-fuel ratio regulation

● Furnace atmosphere control, minimizing oxidation, scale formation, and heat loss

Heating Quality

● High temperature uniformity across the steel cross-section

● Programmable heating curves, adaptable to different steel grades and dimensions

● Consistent and repeatable heating results, essential for metallurgical quality control

Charging

● Steel products are charged into the furnace at a controlled rate through the charging end, with sealing systems to maintain furnace pressure and prevent air ingress.

Preheating Zone

● The steel is gradually heated by high-temperature exhaust gases.

● Purpose: reduce thermal gradients and utilize waste heat

● Typical temperature range: approximately 300–800 °C, depending on steel grade

Heating Zone

● Primary heat input is supplied through burners to rapidly raise the steel temperature.

● Furnace temperatures commonly reach 1000–1200 °C

● Heating rate and surface oxidation are carefully controlled

Soaking Zone

● The steel is held near the target temperature to equalize internal and surface temperatures.

● Ensures thermal homogeneity

● Critical for downstream deformation processes

Discharging

● The steel exits the furnace at a specified temperature (typically 1100–1250 °C) and is directly transferred to rolling mills, forging presses, or other hot-working equipment.