Rolling Mill Billet Reheating Furnace
At JNS Heats, we specialize in designing and manufacturing advanced Rolling Mill Billet Reheating Furnaces that provide precise temperature control, high energy efficiency, and consistent performance for steel billets, blooms, and slabs. These furnaces are essential in the steel rolling process, heating the stock to around 1200°C, the temperature at which steel becomes soft enough for deformation. Our furnaces ensure smooth charging, uniform heating throughout the chamber, and efficient discharge at the exit, maintaining constant heat with optimal fuel usage. Heat transfer inside the furnace occurs mainly through radiation and convection, supported by the strategic arrangement of burners and thermally efficient furnace walls.
Heat Transfer Mechanism
The heat transfer mechanism in a JNS Heats reheating furnace is carefully engineered to handle a wide range of input temperatures—from ambient levels up to 1200°C. The heating process depends on the billet’s dimensions, the type of steel, and rolling speed. Our systems are designed to ensure that each billet exits the furnace at the exact temperature required for rolling, preserving metallurgical quality. Both liquid and gaseous fuels can be used, depending on plant requirements. By maintaining uniform temperature distribution and a balanced heat gradient, our furnaces ensure precise heating and superior product consistency.
Performance and Energy Efficiency
The efficiency of a reheating furnace depends on its ability to convert cold steel into uniformly heated billets using minimal fuel. At JNS Heats, our furnaces are measured in tons per hour, reflecting their production capacity and heating efficiency. Energy performance is determined by the increase in billet temperature relative to fuel consumption. Our furnace designs focus on maximizing heat transfer while minimizing heat loss, using superior insulation, advanced burner technology, and optimized combustion control.
Design and Construction
JNS Heats furnaces are built for durability, safety, and performance. Each furnace features optimized burner placement, carefully calculated internal dimensions, and multiple heating zones to achieve controlled temperature progression. The roof and wall insulation minimize heat loss, while specially designed skids ensure uniform heat distribution and minimal scale formation. Additionally, our systems incorporate regenerative or recuperative heat recovery units, which preheat combustion air or fuel using exhaust gases, resulting in significant energy savings and reduced operating costs.
Operational Parameters
A well-designed reheating furnace from JNS Heats ensures that steel billets heat evenly without excessive fuel use or manual intervention. We control all critical parameters such as total heat input, temperature uniformity, surface heating rate, and internal heat equalization. Our automation systems maintain precise temperature control across all furnace zones, ensuring consistent results with minimal human effort. The best efficiency is achieved when operated at rated capacity using uniform billet sizes and steel grades, but our systems are designed to perform reliably even under variable conditions.
Efficiency and Maintenance Factors
The efficiency of a reheating furnace can be influenced by operational delays, billet variations, or changes in fuel composition. Over time, the condition of burners and internal linings may affect performance. JNS Heats addresses these challenges through robust construction, easy maintenance access, and long-life refractory materials. Regular maintenance and advanced burner control systems ensure steady efficiency, consistent heating, and low emissions.
Types and Classifications
JNS Heats manufactures various types of reheating furnaces tailored to customer needs and plant configurations. Based on the heating method, our furnaces are available in combustion-heated and electrically heated models, suitable for solid, liquid, or gaseous fuels. According to stock movement, we offer Pusher Furnaces, Walking Beam Furnaces, Roller Hearth Furnaces, Walking Hearth Furnaces, and Rotary Hearth Furnaces, each providing specific advantages in automation, throughput, and fuel efficiency.
Regenerative and Recuperative Systems
When classified by heat recovery method, JNS Heats furnaces fall into two main categories — Regenerative and Recuperative. Regenerative furnaces use regenerative burners that recover and reuse heat from exhaust gases, while recuperative furnaces employ recuperators to preheat combustion air. Both systems significantly enhance energy efficiency and reduce emissions, making our furnaces highly eco-friendly and cost-effective.
Conclusion
At JNS Heats, every Rolling Mill Billet Reheating Furnace is designed with a focus on energy efficiency, productivity, and sustainability. Our advanced thermal engineering solutions help steel rolling mills achieve consistent quality, reduced fuel costs, and a smaller environmental footprint. With our blend of innovation, robust design, and expert support, we ensure superior heating performance and long-term reliability for every industrial operation.
JNS Heats stands as a reliable partner to hand tool manufacturers, offering custom-designed heat treatment furnaces that enhance tool quality, extend lifespan, and reduce production costs — backed by strong technical support and after-sales service.
