Room-Type Heat Treatment Furnace | Gas-Fired Bogie Hearth Solution for Precision Thermal Processing
Heavy manufacturing plants need heat treatment equipment that holds tight tolerances. The Room-Type Heat Treatment Furnace systems from JIANGSU YINUO THERMAL ENERGY TECHNOLOGY CO., LTD are built for that job. Each unit carries a 350 mm refractory fiber lining and holds temperature control within ≤±2℃. Gas-fired bogie hearth furnaces in the range reach working temperatures up to 950℃. After one hour of heat preservation, temperature uniformity stays between ±8℃~±1℃. Behind the build sits a 20,000㎡ production facility, 80 million yuan in fixed assets, and more than 100 specialized engineers. Furnace chamber dimensions and loading capacities can be fully customized to your stress relief annealing and heat treatment requirements.
Why Choose Our furnace?
Precision matters in thermal processing. So does efficiency. So does room to adjust when the job changes, and your equipment has to deliver all three. Our solution applies intelligent engineering to the major problems this industry faces.
The design of the movable bogie hearth avoids the laborious and safety concerns of manual loading of heavy workpieces. You can load the components externally while the furnace is still running, greatly increasing throughput, and shielding your personnel from extreme temperature exposure.
Big heating chambers have always struggled to hold an even temperature. That problem has dogged metallurgical processes for years. Our combustion system can run in switchable pulse combustion mode or regenerative combustion mode, and either way heat spreads evenly through the customisable furnace chamber. Local over-heating is avoided. Material waste from rejected pieces drops.
Your operating costs are directly impacted by energy efficiency. The refractory fibre lining of 350mm thickness offers excellent insulation, with a maximum furnace shell temperature rise of less than 45℃ on the top and 40℃ on the side walls at a maximum operating temperature of 950℃. This better heat containment decreases fuel use and offers safer working conditions.
Technical Specifications
| Parameter |
Specification |
| Furnace Chamber Dimension |
Customized per customer's requirements |
| Furnace Type |
Gas-fired bogie hearth furnace |
| Furnace Loading Capacity |
Customized per customer's requirements |
| Refractory Fiber Lining Thickness |
350 mm |
| Fuel Medium |
Natural gas |
| Fuel Calorific Value |
8500 Kcal/Nm³ |
| Working Temperature |
Standard 550℃, adjustable up to 950℃ |
| Furnace Temperature Uniformity |
≤±8℃~±1℃ (after 1 h heat preservation) |
| Temperature Control Precision |
≤±2℃ |
| Adjustable Heating Rate |
50–200℃/h (under full workpiece loading) |
| Furnace Shell Temperature Rise |
Top ≤45℃, side wall ≤40℃ (at 950℃) |
| Temperature Control Zones |
Configured per customer's process |
| Combustion System |
Switchable pulse/regenerative combustion |
| 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 |
Key Operational Advantages
Rapid Heating Ability
The adjustable heating rate of 50-200℃/h with full loading of workpieces speeds up your production cycles. Your staff can handle more batches each shift without impacting the quality of the thermal treatment.
Design that Saves Space
The bogie hearth arrangement gives you the maximum use of your floor area. The boiler door is electrically lifted and the bogie can move completely out of the chamber allowing for a compact installation in facilities with restricted footprint.
Simplified Service
Imported PID intelligent instruments and Omron PLC enable control systems with simple diagnostics. Few specific tools are needed for regular servicing of the chain-driven bogie system and the wedge locking structure of the furnace door.
Typical Applications
Stress relief annealing is the main use for this Room-Type Heat Treatment Furnace. It works in many industrial sectors. Heavy machinery manufacturers use it to normalize large castings and forgings. Uniform cooling keeps residual stress from building up.
Automotive component producers use our systems to temper transmission gears and axle shafts. Temperature control stays precise. That gives consistent hardness profiles. They meet strict automotive quality standards.
Oil and gas equipment fabricators use these furnaces for post-weld heat treatment. They treat pressure vessels and pipeline components. Dimensional stability matters there. Mechanical property uniformity does too. Both are safety-critical requirements.
Advanced Control System for Room-Type Heat Treatment Furnace
You get room to adapt with the semi-automatic control design. Normal production runs can use automatic PID control. For experimental heat treatment cycles or non-standard materials, operators switch to manual mode.
Several process parameters can be watched at the same time, in real time, thanks to Omron PLC integration. Logging of temperature data and over-temperature warnings give you traceability. That helps with quality audits and with meeting industry norms such as AMS2750 or GB/T 9452.
Multiple temperature control zones are set to your individual heat treatment procedure, with separate heating adjustments. The zoning control is energy optimised and allows mixed load processing in a Room-Type Heat Treatment Furnace, where the geometries of the workpieces are different.
FAQ
Q: What is the maximum workpiece size this product can accommodate?
A: Chamber size and loading capacity get built around what you need. Your largest workpieces set the starting point. Our engineering team works out the bogie hearth size and the chamber proportions from those dimensions. That way there is enough clearance for thermal expansion, and air can still circulate properly.
Q: Compared with fixed hearth furnaces, how does the bogie hearth system make things safer?
A: The self-propelled bogie rolls right out of the chamber. Your operators then load and unload at floor level, in a cool area. Nobody has to reach into a hot chamber anymore. Burn injury risks drop a lot.
Q: Will this furnace also run heat treatment jobs other than stress relief annealing?
A: Yes. Stress relief annealing is the job it was built around. Even so, the working temperature can be pushed to 950℃, and the temperature zones can be configured to match your setup. That opens the door to normalizing. Tempering works too, and so does solution heat treatment. Talk to our technical team about the thermal cycle you need.
Q: Our plant has no natural gas supply. What fuel choices do we have?
A: Natural gas is what our standard setup runs on, and its calorific value is 8500 Kcal/Nm³. Propane, LPG, and other gaseous fuels can be handled too, since we build the combustion system to order. Changing the fuel means the burner design and control parameters change with it. We make those adjustments in the engineering phase.
Q: How long does installation and commissioning typically take?
A: Installation duration depends on furnace size and site preparation status. Standard units require 2–4 weeks for mechanical installation, followed by 1–2 weeks for electrical integration and commissioning. Our project management team coordinates with your facility schedule to minimize production disruption.
Q: What ongoing maintenance does the refractory fiber lining require?
A: Under normal operating conditions, the 350 mm fiber lining holds up very well. Any mechanical damage or fiber settling gets caught during annual visual inspections. Lining refurbishment is usually needed every 3–5 years, depending on how hard the unit is used. That keeps thermal efficiency and temperature uniformity where they should be.
Contact Us for Customized Solutions
Our engineers will build a Room-Type Heat Treatment Furnace to match it. Send a note to info@yinuofurnaces.com.
