Vacuum Heat Treatment Furnace Features
Clean Surface Processing
The system is designed to achieve:
•No visible oxide scale
•Controlled or slight decarburization
•Stable surface finish after annealing
Vacuum-Assisted Atmosphere Control
The process includes:
•Pre-evacuation of air inside the chamber
•Gas replacement (e.g., nitrogen)
•Pressurized protection during heating
•This sequence reduces unwanted chemical reactions during heat treatment.
High Spheroidization Performance
According to the product description, the furnace supports high spheroidizing rate, which is critical for improving machinability of steel materials.
Convection-Dominant Heating Mode
The equipment uses convection as the primary heat transfer mechanism, helping reduce temperature differences between inner and outer layers of the load.
Sealed Vertical Chamber：A closed cylindrical structure where materials are loaded and processed under controlled internal conditions.
Furnace Cover System：A top-mounted structure that ensures sealing during vacuum and heating operations.
Vacuum & Gas Replacement System：Removing internal air,Introducing protective gas,Maintaining pressure stability,Convection Circulation System
Heating System：Electric heating is used, as indicated in the product description.
Intelligent Control Unit：Touch screen interface,Integrated heat treatment software,Full process control capability
Industrial Annealing Furnace Technical Characteristics
1.Capacity Range
•Approx. 8–24 tons per batch
2.Effective Size
•Diameter: approx. 1800–3600 mm
•Height: approx. 2400 mm
3.Power Range
•Approx. 200–500 kW
4.Atmosphere Type
•Nitrogen-based protective atmosphere
Annealing Heat Treatment Furnace Applications
This vacuum annealing equipment is designed for precision heat treatment in industries such as:
•Automotive fasteners
•Aerospace components
•Railway fastening systems
•High-strength wire rods and coils
•Bearing steel and alloy steel materials
FAQ
1.What makes a vacuum annealing furnace different from standard furnaces?
It uses vacuum or controlled gas replacement to reduce oxidation and improve surface quality during heat treatment.
2.Why is pre-vacuuming important?
Removing air before heating prevents oxidation and allows better control of the internal atmosphere.
3.What kind of results can be achieved after annealing?
According to the product data, the process results in clean surfaces, minimal decarburization, and improved structural uniformity.
4.What materials benefit most from vacuum annealing?
High-strength steels, alloy steels, and precision components that require clean surfaces and stable metallurgical properties.
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