Product Overview
The GWDL-1300VAF series vacuum atmosphere furnace is designed for heat treatments up to 1300°C in controlled vacuum or gas environments. It integrates temperature control, vacuum pumping, atmosphere protection, and safety monitoring systems into one compact solution. The furnace chamber adopts a circular horizontal structure, optimized for vacuum performance and structural stability.
Equipped with silicon carbide heating elements, the furnace delivers uniform temperature distribution and high energy efficiency. It is widely used in laboratories, research institutes, and industrial fields including ceramics, metallurgy, glass, chemical processing, machinery, new materials, and special alloys.
Key Features
Circular Furnace Body
- Seamless cylindrical structure resists deformation under vacuum
- Provides excellent airtightness and pressure uniformity
Accurate & Intelligent Control
- PLC touchscreen controller with multi-function interface
- Displays temperature, vacuum level, gas flow, chamber pressure, power, and status
- 1°C temperature accuracy; heating rate up to 20°C/min
Multi-Atmosphere Operation
- Supports vacuum, inert gas (N₂, Ar), and active gases (H₂, CO)
- Negative pressure display, gas flowmeters, and pressure safety interlock
Efficient Cooling & Safety Design
- Water cooling system for key zones (door, flange, top)
- Shell temperature <40°C during continuous operation
- Over-temperature, over-voltage, over-current, and gas protection included
- Emergency vent valve for instant depressurization
Robust Construction
- High-temperature alumina fiber insulation
- Compact, double-layer structure with internal circulation
- Integrated design, factory pre-wired and tested, ready to operate
Technical Specifications
Max Temperature: 1300°C
Power Supply: AC 380V
Rated Power: 12 kW
Chamber Dimensions: 300 (D) × 200 (W) × 200 (H) mm
Performance & Control
- Temperature Control Accuracy: ±1°C (integrated circuit control, no overshoot)
- Temperature Range: 50°C – 1300°C
- Chamber Uniformity: ±1–3°C
- Temperature Sensor: Type S thermocouple (0 – 1700°C)
- Heating Rate: Max 20°C/min (non-linear), Min 1°C/h
- Control System: Closed-loop SCR phase-trigger with constant voltage, current, or power modes
Heating & Chamber
- Heating Element: 1600-grade Silicon Carbide Rods
- Element Layout: Evenly distributed on both chamber sides
- Refractory Material: 1800-grade vacuum-formed alumina panels; hollow spheres at high-wear points
- Insulation System: Four-layer: alumina fiber wool, fiber board, polycrystalline board, imported insulation
Furnace Body & Structure
- Body Material: CNC-processed steel, polished, acid-washed, phosphated, powder-coated and baked
- Structure: Double-layer, water-cooled shell
- Cooling System: 1P water chiller
- Water-Cooled Areas: Entire furnace shell
- External Shell Temp: <45°C during continuous use
Vacuum & Gas Control
- Vacuum Pump System: Dual-stage rotary vane pump + Roots blower
- Vacuum Level: -0.1 MPa
- Pressure Resistance: 6–20 mm thick steel shell, double-side welded; up to 0.55 MPa (positive pressure)
- Gas Compatibility: H₂, Ar, N₂, O₂, etc.
- Gas Valves: Imported stainless steel
- Flow Meters: 2x float flow meters (0–5 L/min)
- Exhaust Port: 1
- Pressure Monitoring: Dual analog gauges + high-pressure gauge
- Protection System: Automatic shutdown, venting & alarm via pressure switch or sensor
Safety & Reliability
- Safety Module: Integrated protections against overshoot, overcurrent, overpressure, phase loss, etc.
- Door Mechanism: Pneumatic actuator, clockwise to close, counterclockwise to open
- Shell Protection: Low external temperature, water-cooled exterior, long-term safe handling
