This Vacuum Annealing Furnace is designed specifically for vacuum annealing of copper tubes. It enhances crystalline structure, delivers a bright surface finish, improves degassing efficiency, and significantly boosts overall material performance.
Vacuum Annealing Furnace for Copper Tubes Features
- Elimination of work hardening: Restores plasticity after cold processing for easier subsequent forming.
- Optimized grain structure: Homogenizes microstructure to enhance mechanical properties.
- Oxidation prevention: Vacuum annealing eliminates surface discoloration.
- Hydrogen embrittlement mitigation: Avoids brittleness risks from hydrogen in traditional atmosphere annealing.
- Integrated structure: Lightweight, high-purity alumina furnace chamber ensures safety and environmental compliance.
- Uniform heating: High-quality resistance wires ensure consistent temperature distribution.
- Full automation: Pre-set programs enable automatic heating/cooling cycles.
- User-friendly interface: Power and heating indicators for real-time monitoring.
Vacuum Annealing Furnace Applications
- Power industry: Cables, transformers
- Refrigeration: Condenser tubes (ACs, refrigerators)
- Electronics: Heat sinks, connectors
- Aerospace: High-precision conduits
- New energy: Solar panels, battery components
Process Flow
Loading → Primary vacuum → Nitrogen charging → Heating → Fume extraction → Insulation → Heating completion → Cooling with gas replenishment → Cooling completion and unloading
Technical Specifications
- Dimensions: φ360×6400mm (Diameter × Depth)
- Temperature: Max 900°C, standard 850°C (±1°C or ±5°C accuracy)
- Power: 380V, 3-phase, 50Hz, 248.2 kW
- Control system:
- 10-inch LCD touchscreen with 30 programmable curves, 30-day data storage, USB export
- Siemens PLC automation, bidirectional anti-parallel thyristor voltage regulation
- Self-tuning temperature control, vacuum system integrated into touchscreen
- Heating elements: OCr25Al5 resistance wire with high tensile strength and oxidation resistance.
- Furnace structure:
- Double-layered chambers (outer: 309s stainless steel, δ8; inner: 321 stainless steel, δ5)
- Robust steel frame, mobile furnace body with 5-7m/min drive system
- 50mm I-beam rails, modular cooling ducts, and air vents
- Atmosphere protection: N₂ atmosphere with auto-purging and pressure alarms.
- Vacuum system:
- 2X-70 rotary vane pump + 2X-70 mechanical pump
- Valves controlled by cylinders and pneumatic solenoid valves
- Ventilation: 304 stainless steel ventilation tube at rack base, compressed air backflushing at furnace mouth.
- Safety systems: Over-temperature, thermocouple break, and pressure alarms with automatic shutdown.
If you need other sizes, contact us now for a custom quote.
Other Vacuum furnaces recommend :
- Vacuum Brazing Furnace
- Vacuum Sintering Furnace up to 1700℃
- Vacuum Induction Melting Furnace
- Graphite Vacuum Furnace up to 2200℃
- Vacuum Gas Quenching Furnace
- Vacuum Hot Press Furnace
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