Roller Hearth Annealing Furnace - Advanced Continuous Heat Treatment System for Precision Industrial Applications
JIANGSU YINUO THERMAL ENERGY TECHNOLOGY CO., LTD makes industrial heating systems for hard working conditions. Over 100 technical professionals work across a 20,000㎡ production facility. Our Roller Hearth Annealing Furnace is built for factory thermal processing. Each furnace chamber can be customized, and the 350mm refractory fiber lining helps hold temperature uniformity at ±8℃. Control stays within ±2℃. The system runs at a standard 550℃ and can be adjusted up to 950℃. This gas-fired bogie hearth system gives steady heat treatment results. Heating rates can be set from 50–200℃/h at full load. The company backs this with 80 million yuan in fixed assets and quality management systems.
What Makes Our Heat Treatment Solution Different?
Your production needs steady output. It also needs to run efficiently and stay reliable. Our furnace design uses careful engineering to solve key problems in continuous thermal processing.
The system utilises natural gas as a primary fuel media and offers 8500 Kcal/Nm3 calorific value for optimum energy conversion. A number of temperature control zones are set up to suit your particular heat treatment methods, so that each workpiece is subjected to the appropriate thermal conditions.
Equipped with wedge-locking furnace doors that raise at 6 m/min and self-propelled bogies travelling at 5–7 m/min, the equipment streamlines material handling. You can pull the bogie completely out of its chamber in the furnace for full access during loading operations. Your workflow is supported by the chain driven bogie system with electric hoist mechanisms that perform dependably even under the most difficult conditions.
Technical Specifications
| Parameter |
Specification |
| Furnace Type |
Gas-fired bogie hearth furnace |
| Furnace Chamber Dimension |
Customized per customer's requirements |
| Loading Capacity |
Customized per customer's requirements |
| Refractory Fiber Lining |
350 mm thickness |
| Fuel Medium |
Natural gas (8500 Kcal/Nm³) |
| Working Temperature |
Standard 550℃, adjustable up to 950℃ |
| Temperature Uniformity |
±8℃ ~ ±1℃ (after 1h heat preservation) |
| Temperature Control Precision |
≤±2℃ |
| Heating Rate |
50–200℃/h (adjustable, full loading) |
| Shell Temperature Rise |
Top ≤45℃, side wall ≤40℃ (at 950℃) |
| Control System |
Semi-automatic PID + Omron PLC |
| Furnace Door Speed |
Approx. 6 m/min, electric lifting |
| Bogie Travel Speed |
5–7 m/min |
| Combustion System |
Pulse (high/low fire) or regenerative |
| Exhaust System |
Multi-position outlets, chimney ≥2m above roof |
| Typical Application |
Stress relief annealing |
| Customization |
Available based on requirements |
Key Performance Advantages
Precise Multi-Zone Temperature Management
Your heat treatment quality depends on uniform thermal distribution. Our multi-zone independent PID control system maintains temperature consistency within ±5℃ throughout the heating chamber. This precision eliminates common defects like uneven hardness, workpiece deformation, and surface oxidation that compromise product integrity.
Strong Energy Efficiency Design
The Roller Hearth Annealing Furnace incorporates multi-layer composite lightweight fiber lining that minimizes surface heat loss. This closed heat preservation architecture reduces thermal radiation, achieving energy consumption reductions of 25%–58% compared to conventional heating systems. Lower operating costs translate directly to improved production economics.
Industrial Applications for the Roller Hearth Annealing Furnace
Your plant is capable of a wide range of thermal processes. The device is particularly well suited for stress relief annealing processes where the regulated environment and temperature stability are critical.
Steel tube producers use this method for intermediate and final annealing of cold drawn products to meet ductility criteria for high pressure applications. Automotive component manufacturers use continuous processing for fastener production and gearbox components where surface integrity cannot be compromised.
The switchable combustion system with pulse and regenerative mode can be adjusted to the production requirements. The furnace also provides consistent metallurgical results from a Roller Hearth Annealing Furnace whether you are processing a large batch or a specialised material.
FAQ
Q: What effect does temperature uniformity have on my product quality?
A: Temperature swings hit metallurgical properties head on. That is why we hold a ±8℃ uniformity standard. Every section of the workpiece gets the same thermal treatment. Soft spots, warping, and grain structures that drift out of spec never get a chance to form, so you avoid rejection rates and rework costs.
Q: How does this system keep energy use down?
A: The 350mm fiber lining creates exceptional thermal insulation. Combined with the closed preservation structure, heat retention increases dramatically. Your facility uses less fuel per cycle while maintaining processing temperatures, reducing operational expenses significantly.
Q: Will the furnace handle workpieces of different sizes?
A: Yes, we do. Furnace chamber dimensions and loading capacity both get built to your specs. Loading works around different product shapes and weights, thanks to the fully-retractable bogie design.
Q: What control options are available?
A: Imported PID intelligent instruments and an Omron PLC give the system semi-automatic control. Specialized processes can also run in manual mode. Automated production lines and operator-supervised cycles both fit this setup.
Q: How quickly can the furnace reach working temperature?
A: Heating rates adjust from 50–200℃/h at full loading, which keeps your process under control. Short cycle times come from rapid heating, useful for high-volume runs. Sensitive materials stay protected from thermal shock when ramp rates are controlled.
Contact Our Engineering Team
Ready to enhance your heat treatment capabilities with a Roller Hearth Annealing Furnace? Reach us at info@yinuofurnaces.com for detailed specifications and project consultation.
