Structure and Specifications
The vacuum gas quenching furnace is designed for rapid heat treatment of metal components under high-vacuum or protective gas conditions, ensuring oxidation-free and decarburization-free surfaces while maintaining excellent dimensional stability. The furnace features a high-strength double-layer water-cooled chamber with multiple thermal insulation shields and a uniform heating system that enables precise temperature control and efficient heat transfer.
Available effective heating chamber sizes:
300 × 300 × 400 mm
600 × 600 × 1000 mm
1000 × 1000 × 1200 mm
Heating temperature range: 500 °C – 1500 °C
Cooling rate: up to 300 °C/min (from 1400 °C, adjustable according to process requirements)
Cooling pressure: up to 6 bar (high-pressure gas quenching system)
The furnace’s compact, hermetically sealed structure makes it suitable for both small-scale precision heat treatment experiments and batch production of medium and large workpieces.
Heating and Cooling System
The heating system employs high-purity graphite or molybdenum heating elements, achieving temperature uniformity within ±3 °C to ensure consistent heating of all parts.
The cooling system utilizes high-pressure inert gas circulation (nitrogen, argon, or mixed gases) in combination with a high-speed fan and efficient heat exchanger, enabling rapid cooling within seconds. This results in fine, dense microstructures, improving the material’s strength and toughness.
The temperature control system features multi-zone independent regulation with PID auto-adjustment, allowing programmable and precise control of complex heating and cooling curves.
Vacuum and Control System
The vacuum system consists of a mechanical pump, Roots pump, and a diffusion or turbomolecular pump combination, achieving an ultimate vacuum of 5 × 10⁻³ Pa. This effectively prevents oxidation and contamination.
The furnace is equipped with a PLC-based automatic control platform and touchscreen HMI for real-time monitoring and recording of temperature, vacuum, pressure, and cooling rates.
The control software supports recipe storage, process tracking, and batch data logging, enabling efficient quality management and repeatable production.
Equipment Features
High-efficiency insulation and water-cooled chamber ensure reliable and stable operation.
High-pressure gas quenching achieves rapid cooling with minimal deformation.
Multi-zone temperature control provides a uniform thermal field for complex heat treatment cycles.
Fully automated operation with programmable process control for easy use.
Clean vacuum environment ensures bright, oxidation-free surfaces and superior finish quality.
Application Scope
The vacuum gas quenching furnace is widely used in industries requiring high hardness, strength, and surface quality, including:
Precision metal molds (injection, die casting, stamping molds).
Cutting tools (turning tools, milling cutters, drills, punches, hobs).
High-strength gears, shafts, and transmission components.
Aerospace engines, gas turbines, and military-grade critical parts.
With its high-vacuum environment, efficient heating, and rapid cooling capability, the system produces oxidation-free, decarburization-free surfaces and optimal microstructures. Its high stability, precise process control, and full data traceability make it an indispensable high-performance heat treatment solution for precision mold manufacturing, aerospace, energy, and advanced machinery industries.
