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The GWDL-VAF Series 2100℃ Vacuum Atmosphere Furnace integrates temperature control, vacuum, and gas path systems in one unit. It adopts tungsten sheet heating elements and a multi-layer metal reflective screen furnace lining, supports fully automatic program-controlled temperature, and is suitable for high-temperature sintering, melting, and other scenarios of materials in scientific research and industrial fields.
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As shown in the figure, the GWDL-VAF Series 2100℃ Vacuum Atmosphere Furnace integrates a temperature control system, vacuum furnace chamber, vacuum pump, gas path, pressure protection, gas flow control, and positive/negative pressure display in one unit. The water-cooled unit is separated from the furnace body. The furnace lining is made of multi-layer metal reflective screens.
It uses tungsten sheets as heating elements and is a specialized device developed for laboratories in colleges and universities, research institutes, as well as industrial and mining enterprises. It is designed for sintering, melting, analysis, and production of materials such as ceramics, metallurgy, electronics, glass, chemicals, machinery, refractory materials, new material development, special materials, building materials, metals, non-metals, and other compound materials.
The control panel is equipped with a touchscreen and PLC intelligent control system, enabling intelligent temperature adjustment. It controls the power supply, main heating operation, voltage, current, water pump, vacuum pump, gas flow, positive/negative pressure, pressure contact gauge, and valves—allowing real-time monitoring of the system’s working status. This product adopts reliable integrated circuits, ensuring a good working environment and strong anti-interference capability. Even at the maximum temperature, the surface temperature of the furnace body is ≤40℃, significantly improving the working environment. With microcomputer program control, it supports programmable temperature curves and fully automatic heating/cooling. During operation, temperature control parameters and programs can be modified, offering flexibility, convenience, and simple operation.
The furnace chamber is entirely made of vacuum-formed high-purity lightweight alumina material, featuring high service temperature, low heat storage, resistance to rapid heating and cooling, and excellent thermal insulation performance. It has a reasonable structure with inner and outer double-layer furnace sleeves and air-cooled heat dissipation, which can greatly shorten the test cycle.
| Temperature | 2100℃ |
| Model | GWDL-2100VAF |
| Common Operating Temperature | 2100℃ |
| High-Temperature Operating Condition | When the temperature exceeds 1600℃, control the argon flow rate to maintain the furnace internal pressure at 100-1000Pa, preventing evaporation of the heating element and high-temperature reflective screen. |
| Voltage (AC) | 380V |
| Designed Power | 18KW |
| Furnace Chamber Size (mm) (Depth×Width×Height) | 300×160×160 (effective heating zone) |
| Temperature Control Accuracy | ±1℃ (integrated circuit control, no overshoot) |
| Control Range | 50℃ to 2100℃ |
| Temperature Uniformity Inside Furnace | ±2℃ (varies by heating chamber size) |
| Temperature Measuring Element & Range | Thermocouple with 分度 number C, measuring range up to 2300℃ |
| Heating Rate | Freely adjustable. Range: Maximum 20℃/min (non-linear); Minimum 1℃/h |
| Heating Element | High-purity metallic tungsten ribbon (Note: Nitrogen is prohibited from being introduced when the temperature exceeds 800℃) |
| Installation Position of Heating Element | Evenly distributed around the furnace chamber |
| Furnace Body | Processed by CNC machine tools, with surface treatments including polishing, grinding, pickling, phosphating, plastic powder spraying, and high-temperature baking. Features a novel and attractive appearance, with advantages of oxidation resistance, acid and alkali resistance, corrosion resistance, high-temperature resistance, and easy cleaning. |
| Furnace Body Structure | Double-layer water-cooled structure made of 304 stainless steel, ensuring a good working environment |
| Furnace Door Opening Method | Side-opening |
| Surface Temperature of Furnace Body | ≤45℃ during long-term continuous operation |
| Water Cooling | 3P refrigeration unit (with compressor) |
| Water-cooled Parts | Around the outer shell |
| Vacuum Pump | Two-stage direct rotary vane vacuum pump + roots pump |
| Vacuum Degree | 0.1-1000Pa (controllable pressure) |
| Pressure Resistance | The furnace chamber steel plate is 6-20mm thick, with double-sided welding, capable of withstanding positive pressure of 0.1MPa |
| Gas Path Valves | Imported stainless steel valves |
| Pressure Detection | 1 digital pressure gauge with dual indication (positive pressure & negative pressure) |
| Gas Flow Meter | 1 argon mass flow meter for precise gas flow control |
| Exhaust Port | 1 electrically controlled exhaust port for pressure relief |
| Pressure Protection | Designed to prevent hazards caused by closed exhaust port, blocked exhaust port, or excessive furnace chamber pressure. Principle: Signals are obtained by a pressure contact gauge or pressure sensor, which drives the control module to close the electromagnetic intake valve, activate the electromagnetic exhaust valve and alarm. Pressure is released through the exhaust port, and the sound and light alarm buzzer is triggered to ensure the normal operation of the furnace. |
| Applicable Atmosphere | Argon |
| Thermal Insulation | The furnace chamber is equipped with 10-layer reflective screens, including 3 layers of tungsten, 2 layers of molybdenum, 2 layers of 310S stainless steel, and 3 layers of 304 stainless steel |
| Protection System | 1. Adopts an integrated module control unit with high control accuracy, equipped with dual-circuit control and dual-circuit protection. It provides protection against overshoot, undershoot, thermocouple break, phase loss, overpressure, overcurrent, overtemperature, current feedback, and soft start. |
| 2. Equipped with a 5kW generator as a backup emergency power supply to prevent power failure at high temperatures, with an automatic control circuit. | |
| Control System | Adopts closed-loop thyristor module trigger control with phase-shift trigger mode. Output voltage, current, or power is continuously adjustable, with constant voltage, constant current, or constant power characteristics. The current loop is the inner loop, and the voltage loop is the outer loop. When a sudden load is applied or the load current exceeds the current limit, the output current of the voltage regulator is limited within the rated current range to ensure the normal operation of the output and voltage regulator. Meanwhile, the voltage loop also participates in regulation to maintain the stability of output current and voltage within the rated current range (with sufficient adjustment margin). This protects the heating element from excessive current and voltage impact, achieving safe, reliable control and high control accuracy. |
| Display Parameters | Temperature, temperature segment number, segment time, remaining time, output power percentage, voltage, current, pressure, gas flow rate, vacuum degree, etc. |
| Temperature Curve Setting | Touchscreen intelligent temperature controller |
| Multiple Curve Input | 50-segment temperature program control function, with real-time control by Siemens PLC. It enables automatic setting of temperature, vacuum degree, gas flow rate, etc., for any temperature segment. |
| Warranty Scope & Period | Free warranty for the furnace: 1 year. Heating elements are not covered by warranty (free replacement for natural damage within 3 months). |
| Random Spare Parts | 2 fuses, 1 crucible tong, 1 pair of high-temperature gloves |
| Packing List | 1 furnace, 2 fuses, 1 crucible tong, 1 pair of high-temperature gloves, 1 instruction manual, 1 certificate of qualification, 1 factory inspection report (acceptance report), 1 sales delivery note |
