1400°C Vacuum Atmosphere Box Furnace for Inert Gas & High-Temp Sintering

Basic Parameters

The GWDL-ZQLB series vacuum atmosphere box furnace integrates a complete temperature control system, vacuum chamber, vacuum pump, gas delivery system, pressure protection, gas flow control, pressure display (positive/negative), and water circulation system into one unit, with a separate water cooling tank design.

Parameter	1400°C Model
Max. Operating Temp.	1400°C
Long-Term Use Temp.	1350°C
Control Range	50–1400°C
Temp. Sensor	S-type thermocouple (0–1700°C)
Control Accuracy	±1°C (no overshooting)
Heating Elements	Silicon carbide rods/ Silicon molybdenum
Installation Position	Installation Position
Heating Rate	Adjustable: 1°C/h (min, non-leaner) – 40°C/min (max, non-leaner)
How To Replace The Heating Element	The sealed top cover lifts mechanically and rotates 360°, providing full access while minimizing downtime.

1. Construction & Insulation

Body: CNC-processed steel with anti-oxidation coating (dual-color); double-layer air-cooled housing; 180° side-opening door
Lining: High-purity alumina fiber vacuum-formed panels; alumina hollow sphere boards in wear zones
Insulation: 4-layer thermal protection (fiber cotton, fiber board, polycrystalline board, imported materials)

2. Cooling System

Water Cooling: Applied to furnace mouth, door, and top; compatible with external chiller
External Shell Temp: <45°C during continuous use

3. Vacuum & Atmosphere Control

Vacuum Pump: Dual-stage rotary vane (standard)
Measurement: Analog gauge (-0.1MPa), optional digital display
Chamber Pressure Resistance: ±0.1MPa with 6–20mm steel shell
Gas Compatibility: H₂, N₂, Ar, CO, O₂, etc.
Gas Control: Stainless steel valves, dual flow meters (digital mass flow optional), pressure protection with alarms

4. Safety Features

Auto shutdown & alarm if pressure >0.1MPa
Optional toxic gas leak detector (H₂/CO/O₂) with emergency ventilation
Dual-circuit electrical protection (overcurrent/voltage/temperature)
Emergency exhaust valve for instant depressurization
4-layer insulation ensures outer surface remains <45°C

5. Control System

Display: Temperature, segments, time, power, voltage, current
Programs:
- 1 curve: 50 segments
- 2 curves: 28 segments/curve
- 3 curves: 15 segments/curve
- 5 curves: 9 segments/curve
Control Modes: PID, APID, MPT (self-tuning)
Communication: RS485 port (up to 1700m) for PC control/data logging

6. Standard Accessories

2 heating elements with mounts
Furnace door insulation plug (for ≥1700°C models)
Crucible tongs, high-temp gloves
User manual, inspection certificate

7. Warranty & Shipping

Warranty: 1 year for furnace, 3 months for heating elements; lifetime service
Packaging: Foam + plastic wrap + wooden crate
Delivery: Free to domestic urban areas; transit damage fully covered

8. Optional Accessories

Crucibles, saggars, alumina/SiC setters
PC control kits, touchscreen controller
Spare heating elements

9. Usage Notes

Recommended ramp rate: 10–20°C/min for longer element life
Minor lining cracks after use are normal and repairable
Avoid direct spills—use setters or alumina powder
Install in a dry, well-ventilated area

Model (TMAX:1400℃)	Chamber Size (mm)	Voltage	Power	Heating Element	Weight
GWDL-1400ZQLB-4.5L	200×150×150	220V	5KW	U-SiC Rod	140kg
GWDL-1400ZQLB-12L	300×200×200	380V	10KW	U-SiC Rod	160kg
GWDL-1400ZQLB-30L	500×300×200	380V	15KW	U-SiC Rod	240kg
GWDL-1400ZQLB-45L	500×300×300	380V	18KW	U-SiC Rod	460kg
GWDL-1400ZQLB-96L	600×400×400	380V	24KW	U-SiC Rod	640kg
GWDL-1400ZQLB-200L	800×500×500	380V	35KW	U-SiC Rod	920kg