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- gwdlthermo@gwdl.com
The 1200℃ vacuum atmosphere well-type electric furnace features a temperature control accuracy of ±1℃ and a heating rate of ≤45℃/min. Its vacuum alumina furnace chamber is resistant to rapid temperature changes, and the outer shell temperature is ≤40℃. It supports program-controlled temperature, with simple operation. Suitable for high-temperature treatment of various materials, it can be used in both scientific research and production.
| Model | GWL-1200ZQJ |
| Power Supply (AC) | 380V |
| Rated Operating Temperature | 1200℃ |
| Long-term Operating Temperature | 1150℃ |
| Control Range | 50 to 1200℃ |
| Temperature Measuring Element | Thermocouple (Type K), measuring range 0-1320℃ (detects the interior of the furnace liner) |
| Installation Position of Heating Elements | Around the furnace (using high-temperature alloy resistance wires) with corundum mullite for anti-collision protection |
| Temperature Control Precision | ±1℃ (integrated circuit control, no overshoot) |
| Furnace Temperature Uniformity | ±1℃ (depending on the size of the furnace chamber; multi-point control can be adopted for large furnace chambers to achieve better uniformity) |
| Heating Rate | Freely adjustable, with a range of 20℃/min (fast) to 1℃/h (slow) |
| Heating Elements | High-temperature alloy resistance wires (containing molybdenum) |
| Installation/Replacement of Heating Elements | The sealed top cover of the vacuum atmosphere furnace is designed with a mechanical lifting mechanism, allowing easy lifting of the sealed top cover. After lifting, the entire top cover can rotate, saving significant labor and time. |
| Furnace Body | Processed by CNC machine tools, with processes including polishing, grinding, pickling, phosphating, plastic powder spraying, and high-temperature baking. It features a two-color design, novel and attractive appearance, and advantages such as oxidation resistance, acid and alkali resistance, corrosion resistance, high-temperature resistance, and easy cleaning. |
| Furnace Body Structure | Air-cooled double-layer structure, ensuring a good working environment |
| Inner Liner | Sealed, made of 310S stainless steel, can be taken out at high temperatures (provided by the customer) |
| Water Cooling | Provided by the customer |
| Water-cooled Parts | Furnace mouth, furnace door |
| Vacuum Pump and Vacuum Value | Dual-stage direct rotary vane vacuum pump (provided by the customer); pointer pressure gauge shows -0.1MPa |
| Pressure Detection | One positive/negative pressure dual-indicator pointer pressure gauge (optional digital vacuum gauge, etc.) |
| Gas Flowmeter | Two float flowmeters (digital mass flowmeters optional for higher precision as required by the customer) |
| Pressure Protection | To prevent dangers caused by closed or blocked exhaust ports and excessive furnace pressure, this system works as follows: Signals from an electric contact pressure gauge or pressure sensor drive the control module to close the electromagnetic intake valve, start the electromagnetic exhaust valve and alarm, release pressure through the exhaust port, and trigger an audible and visual alarm buzzer, thus protecting the normal operation of the electric furnace. |
| Gas Leak Alarm | Prevents leaks based on the atmosphere used. Function: When the gas leak alarm detects that the content of toxic or dangerous gases in the (indoor) air exceeds a certain value, it drives the module to shut down the electric furnace and gas source intake, open the exhaust port and ventilation, etc., to achieve a safer working environment. (Optional for customers) |
| Applicable Atmospheres | Hydrogen, nitrogen, argon, carbon monoxide, oxygen, etc. |
| Refractory Materials | The furnace lining is made of vacuum-formed high-purity alumina lightweight materials. Positions prone to collision during material handling (furnace mouth, furnace bottom) use lightweight corundum mullite materials, featuring high operating temperature, low heat storage, resistance to rapid heating/cooling, no cracking, no slag dropping, and good thermal insulation performance. |
| Insulation Materials | Three-layer insulation: aluminosilicate fiberboard, alumina fiberboard, and alumina (polycrystalline) fiberboard |
| Furnace Body Surface Temperature | ≤45℃ during long-term continuous operation |
| Protection | Adopts an integrated module control unit with accurate control precision, designed with dual-loop control and dual-loop protection, featuring overshoot, undershoot, thermocouple break, phase loss, overvoltage, overcurrent, overtemperature, current feedback, and soft start protection. |
| Control | Uses closed-loop thyristor module trigger control (phase-shift trigger or zero-crossing trigger mode). Output voltage, current, or power is continuously adjustable with constant voltage, current, or power characteristics. The current loop is the inner loop and the voltage loop is the outer loop. When the load is suddenly applied or exceeds the current limit, the output current of the voltage regulator is limited within the rated range to ensure normal operation of the output and regulator. The voltage loop also participates in regulation to maintain stable output current and voltage within the rated range, thus protecting heating elements from excessive current/voltage impact and ensuring safe, reliable control and precision. (See electric furnace video for details) |
| Display Parameters | Temperature, temperature segment number, segment time, remaining time, output power percentage, voltage, current, etc. |
| Buttons | Imported buttons with a service life of over 100,000 times, equipped with LED indicators |
| Temperature Curve Setting | Uses an intelligent temperature controller with multiple regulation modes (standard PID, artificial intelligence adjustment APID, MPT, etc.), featuring self-tuning and self-learning functions, no overshoot/undershoot, and 30-segment program control. It supports arbitrary slope heating/cooling control, with programmable commands (jump/cycle, run, pause, stop) and allows in-operation program modification. Adopts an AI adjustment algorithm with curve fitting function for smooth curve control. (See electric furnace video for details) |
| Multiple Curve Input | 50-segment program control function |
| Touchscreen | 7-inch touchscreen |
| Random Spare Parts | 2 heating elements |
| Warranty Scope and Period | The electric furnace is covered by a 1-year free warranty; heating elements are not covered (free replacement for natural damage within three months) |
Power (kW): 105
Temperature Control Zones:D800×1300, effective temperature zone D730×1000 (±5℃)，sets of independent control for upper, middle, and lower zones
Furnace Model: GWL-1200ZQJ/D730/1000 (Vacuum Atmosphere Well-Type Furnace)
Vacuum System:25 L/s，Includes control, air intake, pipelines, etc.
Hydrogen Combustion: Automatic combustion
Platform:2×2×2 (unit not specified)，Includes stairs
Furnace Tube:Material: 310S ，Wall thickness 15mm, cover thickness 25mm
English Optional Function List | |||
| Name | Function Introduction | Remarks | Function Code |
| Temperature controller | Standard 50-segment heating curve; optional premium instrument (B) | Either | AB |
| Touch screen | Chinese menu, storage of multiple heating process curves, historical curves and data reports (7-inch) | One out of four | C |
| IoT interface | Electric furnace RS485 communication interface to read/write real-time data such as start, pause, stop, heating curve, allowable time, etc. | D | |
| Computer control software and hardware | Computer-controlled start, pause, stop, heating curve setting/reading, parameter adjustment, etc. High reliability with display of measured value, set value, output value, segment time, segment number, heating curve, power percentage curve. Heating curves can be stored, modified, and historical data can be saved long-term with selectable intervals (1s-1h). | E | |
| PLC | Siemens PLC control (reads/writes start, pause, stop, heating curve, time, temperature curve, atmosphere, flow, switch quantity, power supply, power); open ports for data serial/parallel connection with upstream and downstream equipment | F | |
| Viewport | Viewport on furnace door with high-temperature resistant quartz glass | H | |
| Air inlet | Float flowmeter + manual valve; optional number, range, and gas medium of flowmeters | Either | K |
| Digital mass flowmeter; optional number, range, and gas medium of flowmeters | M | ||
| Exhaust port | Exhaust port, manual opening; DN30 | Either | T |
| Electric opening, automatically opens/closes at segment N according to heating curve | P | ||
| Fully automatic intake and exhaust | Electric exhaust and intake ports can be linked to heating curve segments for automatic opening/closing at any temperature segment; PLC-controlled (requires touch screen function) | Y | |
| Moving caster | Two universal wheels, two directional wheels | R | |
| Rapid cooling | Frequency converter + centrifugal fan for program-controlled cooling | N | |
| Swing-up door | Electric top-opening door + foot control panel | S | |
| Quick discharge rack | Rack (platform) made of high-temperature steel with wear-resistant heavy refractory bricks on top; cooperates with function S to quickly pull out high-temperature materials to the rack outside the furnace door after door opens | I | |
| Multipoint temperature control | Multi-sided independent temperature control for higher temperature field uniformity | X | |
| Stirring fan | Metal stirring fan (within 1050℃) - 4000; frequency converter - 1500-2000; PLC automatic start/customization with temperature segments - 4000 | Z | |
| Separate control cabinet | Control separated from furnace body; additional separate control cabinet (1600x600x400) and extended control cable (within 5m) | Q | |
| Regenerative hearth | Furnace bottom sunk 50mm hollow, multi-point support with additional burning plate; cost increased by 5% | W | |
| Tail gas treatment | Additional VOC tail gas treatment furnace 40m³/H; 80m³/h | V | |
| Corrosion-proof furnace | Furnace material resistant to acid, alkali, and hydrofluoric acid corrosion | G | |
| Heating element protection | Heating element with protection against powder pollution and volatile corrosion | L | |
| Clean furnace | Furnace interior protected with ceramics, high-temperature glass, high-temperature metal, etc. to prevent dust and volatiles | J | |
