- +86-13526935931
- gwdlthermo@gwdl.com
1200℃ for long-term use, with temperature control and uniformity of ±1℃. It can be filled with various atmospheres and achieve a vacuum degree of -0.1MPa (customizable vacuum degree). The loading table lifting and rotation are adjustable, with stirring function, intelligent temperature control and multiple safety protections.
| Temperature | 1200°C |
| Operating Temperature | 1250°C |
| Long-term Operating Temperature | 1200°C |
| Control Range | 80 to 1200°C |
| Temperature Measuring Element | K-type thermocouple, measuring range 0-1320°C |
| Installation Position of Heating Elements | Around the furnace or around the furnace + bottom |
| Temperature Control Precision | ±1°C (controlled by integrated circuit, no overshoot) |
| Furnace Temperature Uniformity | ±1°C (depending on the size of the furnace chamber; multi-point control can be adopted for large chambers to achieve better uniformity) |
| Heating Rate | Freely adjustable, ranging from 40°C per minute (40°C/min) at maximum to 1°C per hour (1°C/h) at minimum |
| Heating Elements | High-temperature alloy resistance wire (containing molybdenum, surface temperature up to 1500°C) or silicon carbide rods. U-shaped equal-diameter silicon carbide rods, made mainly from a-SiC, are non-metallic high-temperature heating elements with advantages of fast heating, high thermal efficiency, long service life, resistance to deformation at high temperatures, easy installation/maintenance, and maximum temperature of 1500°C. |
| Furnace Body | Processed by CNC machine tools, manufactured through polishing, grinding, pickling, phosphating, plastic powder spraying, and high-temperature baking. It features a two-color design with a novel and attractive appearance, and has properties of oxidation resistance, acid/alkali resistance, corrosion resistance, high-temperature resistance, and easy cleaning. |
| Furnace Structure | The electric furnace has a three-layer outer shell and adopts an air-cooled double-layer structure. Effective air-cooled guide baffles enable overall cold air circulation in the shell, which cools the conductive sheets of heating elements before being discharged, preventing their high-temperature oxidation and ensuring a good working environment. |
| Rotation of Loading Platform | This lifting furnace can be equipped with a power conversion joint, with rotation speed adjustable via an external speed-regulating motor. |
| After Loading Platform Rises | A stirring rod can be inserted from the top of the furnace body to realize stirring. |
| Lifting of Loading Platform | Lifted by two lead screws and guided by four optical axes, with adjustable lifting speed. |
| Combination of Loading Platform and Furnace Mouth | The furnace door opens by vertical lifting from the bottom; the loading platform and furnace mouth are sealed with 3-4 layers of tapered stepped soft seals, with elastic high-temperature sealing strips on the steps to effectively absorb the expansion of refractory materials at the furnace mouth and loading platform. |
| Refractories for Loading Platform | Made of a combination of vacuum-formed alumina lightweight materials and alumina hollow sphere plates, ensuring both thermal insulation and load-bearing performance. |
| Refractory Materials | The furnace lining is made of vacuum-formed alumina lightweight materials. Lightweight hollow sphere alumina plates are used in positions prone to collision during material handling and load-bearing areas (furnace mouth, furnace bottom), featuring high operating temperature, low heat storage, resistance to rapid heating/cooling, no cracking, no slag dropping, and good thermal insulation. |
| Thermal Insulation Materials | Three layers of insulation: aluminum silicate fiberboard, alumina fiberboard, and alumina (polycrystalline) fiberboard. |
| Temperature of Furnace Shell | Below 45°C during continuous operation without shutdown. |
| Protection | Equipped with an integrated module control unit with accurate control precision, designed with dual-loop control and protection, featuring protections against overshoot, undershoot, thermocouple breakage, phase loss, overvoltage, overcurrent, overtemperature, current feedback, and soft start. |
| Control | Adopts closed-loop thyristor module trigger control (phase-shift or zero-crossing trigger), with continuously adjustable output voltage, current, or power, and constant voltage, current, or power characteristics. The current loop is the inner loop and the voltage loop is the outer loop; when a sudden load is applied or load current exceeds the limit, the output current of the voltage regulator is limited within the rated range to ensure normal operation. The voltage loop also participates in regulation to maintain constant output current and voltage within the rated range, protecting heating elements from excessive current/voltage impact and ensuring safe, reliable control and precision. |
| Water Cooling | Water-saving equipment, equipped with a high-temperature circulating water pump, circulating water tank, and water radiator; water-cooled parts include furnace top, furnace mouth, furnace door, and shell. |
| Atmosphere | The electric furnace can be filled with hydrogen, nitrogen, argon, carbon monoxide, oxygen, etc. |
| Vacuum Degree | -0.1Mpa (can be customized to 1Pa, -1Pa, -0.01Pa, etc.) |
| Protection System | To prevent dangers caused by closed or blocked exhaust ports and excessive pressure in the furnace tube, this system uses signals from an electric contact pressure gauge or pressure sensor to drive the control module to close the electromagnetic intake valve, start the electromagnetic exhaust valve and alarm, thus protecting the normal operation of the electric furnace. |
| Display Parameters | Real-time temperature, temperature segment number, segment time, remaining time, output power percentage, voltage, current, etc. |
| Buttons | High-quality buttons with a service life of over 100,000 operations and LED indicators. |
| Temperature Curve Setting | Equipped with an intelligent temperature controller with multiple 调节 modes (standard PID, AI-adjusted APID, MPT, etc.), featuring self-tuning, self-learning, no overshoot/undershoot, and 30-segment program control. It enables heating/cooling control with arbitrary slopes, and has programmable commands (jump/cycle, run, pause, stop), allowing program modification during operation. It uses an AI adjustment algorithm with curve fitting for smooth curve control. |
| Input of Multiple Curves | 30-segment (customizable to 50-segment) program control, supporting settings: 1 curve with 30 (50) segments, 2 curves with 14 (28) segments each, 3 curves with 9 (15) segments each, 5 curves with 5 (9) segments each; multiple curves can be input and called arbitrarily. |
| Communication Interface | Equipped with an RS485 interface with a communication distance of up to 1200 meters, enabling computer control of furnace start/pause/stop, curve setting/reading, and parameter adjustment with high reliability. The computer screen displays rich content (measured/given/output values, segment time/number, heating curve, power percentage curve). Curves can be stored, called, and modified; historical curves and reports can be saved long-term with selectable time intervals (1s-1h). |
| Accessory Parts | 2 heating elements, 2 sets of rod tools, 1 pair of crucible tongs, 1 pair of high-temperature gloves. |
| Warranty Scope and Period | The furnace is covered by a 1-year free warranty; heating elements are not covered (free replacement for natural damage within 3 months). |
| Selection Instructions | For example: A 1200°C lifting furnace with 1 loading platform and furnace chamber size (diameter-height) of 600×600mm has the model: GWL-1200VSF-SR/D600/600. |
| Customer Optional Accessories | 1. Crucibles, saggars, corundum furnace pads / silicon carbide pads 2. Computer control software and hardware 3. Touchscreen temperature controller 4. Additional exhaust port 5. Consumables: heating elements 6. Additional observation port |
| Notes | 1. To avoid affecting the service life of the electric furnace, we recommend a heating and cooling rate of 10-20°C/min (excessively fast heating at high temperatures will shorten the service life of the heating elements). 2. After using this lifting furnace for a period of time, small cracks may appear in the furnace chamber, which is a normal phenomenon and will not affect use. It can be repaired with an alumina coating. 3. It is not recommended to pass corrosive gases. If strong corrosive gases such as S, Na, etc. need to be introduced, please inform us in advance, and we will carry out special treatment on the furnace chamber. 4. Do not let high-temperature solutions leak onto the furnace bottom. To avoid this, a pad or alumina powder can be used for isolation. 5. The instrument should be placed in a well-ventilated and non-humid place. |
| Packing List | 1 electric furnace, 2 heating elements, 2 sets of rod tools, 1 pair of crucible tongs, 1 pair of high-temperature gloves, 1 instruction manual, 1 certificate of conformity, 1 acceptance report (factory inspection report), 1 sales delivery note. |
| Shipping Information | 1. The electric furnace is packaged in three layers: wrapped with sponge paper, then wrapped with plastic film, and then packed in a wooden box. 2. Free door-to-door delivery in China (free delivery within urban areas). 3. We will be responsible for any damage to the electric furnace during transportation. 4. Logistics methods: transportation by car, railway, ship (for foreign trade export), air freight (for foreign trade export). For shorter distances, our company will send a special vehicle for transportation (packaged with wooden pallets and cartons). |
| Name | Model Specification | Furnace Chamber Size (mm) (Length×Width×Height) | Voltage (ACV) | Power (kw) | Weight (kg) |
| Vacuum Atmosphere Lifting Furnace | GWL-1200VSF-SR/D200/300 | Diameter 200×300 | 380 | 10 | 1500 |
| GWL-1200VSF-SR/D300/300 | Diameter 300×300 | 380 | 15 | 1800 | |
| GWL-1200VSF-SR/D300/500 | Diameter 300×500 | 380 | 18 | 2700 | |
| GWL-1200VSF-SR/D500/500 | Diameter 500×500 | 380 | 35 | 2700 | |
| GWL-1200VSF-SR/D500/800 | Diameter 500×800 | 380 | 45 | 2600 | |
| GWL-1200VSF-SR/D800/800 | Diameter 800×800 | 380 | 85 | 38000 | |
| GWL-1200VSF-SR/D800/1000 | Diameter 800×1000 | 380 | 120 | 52000 | |
| Notes: | 1. Furnace chamber sizes of special models can be customized according to customer requirements (delivery time: 17-30 days)! 2. The unit of overall dimensions is millimeters (mm). The marked dimensions are for reference only, and the actual dimensions shall be subject to the ex-factory ones! | ||||
| Name | Function Introduction | Function Code | |
| Temperature Controller | Standard 50-segment heating curve, optional imported controller (B) | Choose one out of two. | AB |
| Touch Screen | Chinese menu, multi-curve storage, historical data recording (7-inch) | Choose one out of two. | C |
| IoT Interface | RS485 communication for real-time data access (start/pause/stop/curves/timing) | D | |
| Computer Control System | PC software for full furnace control (start/stop/curve setting/data logging). Supports data recording (1s-1h intervals), parameter adjustment, and long-term storage. | E | |
| PLC Control | Siemens PLC (controls heating curves, atmosphere, flow rates, power). Open ports for upstream/downstream equipment integration. | F | |
| Observation Window | High-temperature quartz glass window on furnace door | H | |
| Gas Inlet | Float flow meter + manual valve (selectable flow range/gas type) | Choose one out of two. | K |
| Digital mass flow controller (selectable flow range/gas type) | M | ||
| Exhaust | Manual exhaust valve | Choose one out of two. | T |
| Automatic electric valve (program-controlled by heating curve segments) | P | ||
| Full Auto Gas Control | PLC-controlled electric valves synchronized with heating curves (requires touch screen option) | Y | |
| Casters | 2 swivel + 2 fixed wheels | R | |
| Rapid Cooling | Program-controlled cooling with inverter + centrifugal fan | N | |
| Multi-zone Control | +10% cost per additional heating zone, +20% for independent control | X | |
| Stirring Fan | Metal fan (<1050°C):-4000; Inverter: -1500-2000; PLC-auto control: -4000 | Z | |
| Separate Control Cabinet | Independent cabinet (1600×600×400mm) with 5m control cables | Q | |
| Heat-storage Base | 50mm recessed hollow base with multi-point support (+5% cost) | W | |
| Exhaust Treatment | VOC treatment furnace (40m³/h or 80m³/h options) | V | |
| Corrosion-resistant Chamber | Acid/alkali/HF-resistant materials | G | |
| Heating Element Protection | Protective features against powder contamination and vapor corrosion | L | |
| Clean Chamber | Ceramic/glass/metal lining to prevent dust/vapor contamination | J | |
