Continuous Tempering Furnace | Industrial Heat Treatment Solution for High-Volume Production
JIANGSU YINUO THERMAL ENERGY TECHNOLOGY CO., LTD makes Continuous Tempering Furnace systems to tight tolerances. Metallurgical results stay consistent, even in high-capacity production. Working temperatures on our gas-fired bogie hearth design run from 550℃ up to 950℃. Heat loss stays low thanks to a 350 mm refractory fiber lining. Temperature uniformity holds at ±8℃ after one hour of preservation, and control precision reaches ±2℃. Every component then hits the exact hardness spec. Our facility covers 20,000㎡. Fixed assets total 80 million yuan. Over 100 specialized engineers work here. From design through commissioning, we cover the full thermal processing job.

What Is Furnace?
The device is an automated industrial heating system for re-heating hardened metal parts to exact temperatures less than critical temperatures. This procedure increases the toughness while lowering brittleness in steel and alloy parts.
Unlike the classical batch furnaces, the continuous systems move the workpieces via stabilised heating zones with the help of conveyor mechanisms. This does rid of the typical production bottleneck of batch processing and guarantees each part gets the same temperature exposure.
The system targets three main manufacturing problems, irregular hardness profiles, the excessive energy consumption due to repetitive heating cycles and human error in manual loading processes. By automating residence time and temperature profiles, one can get predictable metallurgical transformations on thousands of components.
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 Thickness |
350 mm |
| Fuel Medium |
Natural gas (8500 Kcal/Nm³) |
| Working Temperature |
Standard 550℃, adjustable up to 950℃ |
| Temperature Uniformity |
±8℃ to ±1℃ (after 1h preservation) |
| Temperature Control Precision |
≤±2℃ |
| Adjustable Heating Rate |
50–200℃/h (full loading) |
| Furnace Shell Temperature Rise |
Top ≤45℃, side wall ≤40℃ (at 950℃) |
| Control System |
Semi-automatic PID + Omron PLC |
| Furnace Door Lifting Speed |
Approx. 6 m/min |
| Bogie Moving Speed |
5–7 m/min |
| Bogie Driving Type |
Chain drive, self-propelled |
| Customization |
Available based on requirements |
Key Advantages
Precise Multi-Zone Temperature Control
We have independent PID control in several heating zones in our system. This guarantees the homogeneity of temperature in ±5℃ in the whole furnace chamber. You will remove common problems like as inconsistent hardness, warping and surface oxidation caused by inconsistent heating.
Increased Energy Efficiency
The multi-layer composite fibre liner offers excellent heat insulation. The closed preservation structure keeps surface heat loss to a minimum. You’ll cut energy usage by 25% to 47% compared to traditional heating furnaces.
Flexible Continuous Tempering Furnace Process Configuration
The combustion system alternates between pulse combustion modes (high/low fire) and regenerative combustion depending on your process needs. The temperature control zones are set according to your individual heat treatment requirements.
Reliability of Automated Operation
Electric raising doors move at 4-6 m/min. Wedge locking mechanisms hold them in place. A self-propelled bogie system uses a precise chain drive and runs at 5–7 m/min. Fewer manual steps are needed with this automation. Output consistency improves as well.

Industrial Applications of the Continuous Tempering Furnace
Automotive Component Manufacturing
High-strength fasteners and safety-critical parts need precise martensitic transformation. The same goes for bolts in Class 8.8, 10.9, and 12.9. Our this product gives the stable thermal cycles that automotive-grade specs call for. No surface oxidation either.
Bearing and Drive Train Production
Parts that see heavy fatigue and rubbing wear need a hard surface and a tough core. In 24/7 manufacturing settings, the furnace runs nonstop. Mechanical properties stay the same from one production batch to the next.
Making Tools and Hardware for Industry
Hand tools need exact HRC specifications. Construction hardware and professional-grade equipment need them too. Our system handles many different shapes at the same time. Quality stays uniform no matter how complex the component is or how it is loaded.
Stress Relief Annealing Operations
Welding and machining leave residual stresses behind. Those stresses weaken the structure. Our system runs controlled heating and cooling cycles. That, using a Continuous Tempering Furnace, relieves the internal stresses. Parts last longer, and they keep their dimensions.

FAQ
Q: What materials can be processed in your product?
A: Carbon steel, alloy steel, tool steel, and other metal alloys all run in our system. These are the grades that need tempering between 150℃ and 950℃. Chamber dimensions can be customized, so different component sizes and shapes fit inside.
Q: How does temperature uniformity affect final product quality?
A: Hardness consistency takes a direct hit from temperature deviation. With ±8℃ uniformity, every workpiece gets the same thermal treatment. That kills soft spots and hardness variations. Left alone, those problems cause premature failure or rejection during quality inspection.
Q: What maintenance schedule do you recommend?
A: Check the refractory lining integrity every quarter. Calibrate temperature sensors once a month. Verify combustion system performance each week. Together these keep efficiency at its best. Our engineering team hands over detailed maintenance protocols with every installation.
Q: Can this system connect to production lines that are already in place?
A: Yes. The bogie design lets loading setups vary. Quenching operations upstream and inspection stations downstream can both connect to the control system. We adjust interface requirements during the design phase.
Q: What certifications ensure quality compliance?
A: Every unit is checked before delivery. The checks follow national and industrial standards. Our quality management system confirms that thermal processing requirements are met. Automotive, aerospace, and general manufacturing applications all fall under those requirements.
Partner With YINUO for Complete Thermal Solutions
Our engineering team designs each Continuous Tempering Furnace system around your manufacturing requirements. Email info@yinuofurnaces.com for a technical consultation or a quotation.