Heavy-Duty Pit Type Heat Treatment Furnace
The furnace adopts a vertical pit structure with strong convection circulation technology, helping maintain uniform heating performance throughout the load area. It is suitable for medium and large batch heat treatment operations where temperature consistency and loading capacity are critical.
Typical Heat Treatment Applications
Annealing：Used for reducing hardness and improving machinability of steel components after forming or cold working.
Spheroidizing Annealing：Suitable for medium and high carbon steel wire, bearing steel, and fastener materials requiring improved cold forming performance.
Normalizing：Improves internal grain structure and mechanical consistency before machining or forging.
Quenching and Tempering：Applicable for selected alloy steel parts requiring enhanced strength and wear resistance.
Stress Relieving：Reduces residual stress after welding, machining, or forging operations.
Suitable Steel Components
This pit type furnace is commonly used for:
- Steel wire coils
- Bearing rings
- Fasteners and bolts
- Forged steel parts
- Long shafts and rods
- Steel tubes and pipes
- Automotive components
- Heavy mechanical parts
The vertical loading structure helps minimize deformation of long or cylindrical workpieces during heat treatment.
Pit Type Heat Treatment Furnace Features
Vertical Pit Structure
The deep vertical chamber is designed for large loading capacity and long steel components. It allows efficient use of workshop space while supporting heavy industrial loads.
Strong Convection Heating System
The furnace uses forced hot air circulation to improve heat transfer efficiency and maintain stable temperature distribution throughout the chamber.
Automatic Temperature Control
The PLC-based control system supports programmable heat treatment cycles with precise temperature monitoring and process management.
Heavy-Duty Industrial Design
The furnace body adopts reinforced insulation and durable structural materials suitable for continuous industrial operation.
| Item | Specification |
|---|---|
| Furnace Type | Pit Type Heat Treatment Furnace |
| Heating Method | Electric Heating |
| Working Temperature | 650–950°C |
| Loading Capacity | 6–30 Tons |
| Furnace Diameter | Customized |
| Effective Heating Depth | Customized |
| Temperature Uniformity | ±5°C to ±10°C |
| Protective Atmosphere | Nitrogen / RX Gas / Methanol |
| Control System | PLC Automatic Control |
| Application | Steel Components Heat Treatment |
Reduced Workpiece Deformation
The vertical loading method is highly suitable for long shafts, wire coils, and cylindrical components that may deform in horizontal furnaces.
Large Batch Processing Capacity
The furnace supports heavy production loads for industrial-scale heat treatment operations.
Improved Heating Uniformity
Strong convection circulation enhances temperature consistency throughout the working chamber.
Flexible Heat Treatment Processes
Multiple heat treatment cycles can be configured for different steel grades and mechanical property requirements.
Lower Operating Maintenance
The simplified structure and industrial-grade components help reduce long-term maintenance costs.
Industries Served
Our pit type heat treatment furnaces are widely used in:
- Fastener manufacturing plants
- Steel wire processing factories
- Bearing manufacturers
- Forging workshops
- Automotive component suppliers
- Heavy machinery manufacturers
- Metal heat treatment service companies
Why Choose Our Pit Type Heat Treatment Furnace
- Experience in industrial heat treatment equipment manufacturing
- Custom engineering support for special workpieces
- Stable furnace atmosphere control
- Reliable heavy-load furnace structure
- Professional PLC automation system
- Technical support for installation and commissioning
FAQ
What materials can be processed in a pit type heat treatment furnace?
The furnace is suitable for carbon steel, alloy steel, bearing steel, spring steel, and various forged or machined steel components.
Is the furnace suitable for long shafts or wire coils?
Yes. The vertical structure is particularly suitable for long or cylindrical workpieces because it helps reduce deformation during heating.
Can protective atmosphere systems be added?
Yes. Nitrogen, RX gas, methanol atmosphere, and cracked ammonia systems are available according to process requirements.
What heating methods are available?
Electric heating is standard, while gas heating configurations can also be customized for certain applications.
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