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- gwdlthermo@gwdl.com
1600℃ automatic constant-pressure vacuum atmosphere hot-press electric furnace supports customized pressure ranging from 0.5 to 150 tons. It is equipped with high-temperature U-shaped molybdenum disilicide rods and an electric precision hydraulic press, and is compatible with multi-atmosphere and vacuum environments. Featuring three-layer thermal insulation that saves 80% energy, it is specially designed for high-temperature and high-pressure material sintering, ensuring precision and efficiency.
It is a special equipment developed for laboratories of colleges and universities, scientific research institutes, and industrial and mining enterprises to conduct sintering, melting, analysis and production of ceramics, metallurgy, electronics, glass, chemicals, machinery, refractory materials, new material development, special materials, building materials, metals, non-metals and other compounds.
| Maximum Operating Temperature | 1650℃ |
| Long-term Operating Temperature | 1600℃ |
| Control Range | 80 to 1600℃ |
| Temperature Measuring Element | Thermocouple calibration number B, temperature measurement range: 0 - 1820 °C |
| Installation Position of Heating Elements | Around the furnace chamber |
| Temperature Control Precision | ±1℃ (integrated circuit control, no overshoot phenomenon) |
| 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 temperature uniformity) |
| Heating Rate | Freely adjustable, with a range of 1℃/h (slowest) to 40℃/min (fastest) |
| Heating Elements | High-temperature U-type molybdenum disilicide rods |
| Furnace Body | Processed by CNC machine tools, through polishing, grinding, pickling, phosphating, plastic powder spraying, and high-temperature baking. It adopts a two-color design with a novel and beautiful appearance, and has advantages such as oxidation resistance, acid and alkali resistance, corrosion resistance, high-temperature resistance, and easy cleaning. |
| Pressure | 0.5-150 tons (customizable according to customer requirements) |
| Pressure Regulation | Digital display automatic/manual adjustment, programmable curve. Precision ±1‰ |
| Press | Electric precision hydraulic press |
| Pressure Display | Digital display, unit (N - Newton) |
| Pressure Holding / Constant Pressure | Equipped with imported solenoid valves, with excellent pressure holding performance; constant pressure ±0.2T |
| Pressure and Temperature Change Record | Digital storage |
| Furnace Chamber Refractory Materials | The furnace lining is made of 1800-type vacuum-formed high-purity alumina lightweight materials; easily collision and load-bearing positions (furnace mouth, furnace bottom) use lightweight hollow sphere alumina plates, featuring high operating temperature, low heat storage, resistance to rapid heating/cooling, no cracks, no slag dropping, and good insulation performance (energy-saving effect is over 80% compared with old-style electric furnaces). |
| Insulation Materials | Three-layer insulation: alumina fiber cotton, alumina fiberboard, and alumina polycrystalline fiberboard. The energy-saving effect is over 80% compared with old-style electric furnaces. |
| Furnace Shell Temperature | ≤45℃ during long-term continuous operation |
| Protection (1) | Adopts integrated module control unit with accurate control precision, designed with dual-loop control and protection, featuring overshoot, undershoot, thermocouple break, phase loss, overvoltage, overcurrent, overtemperature, current feedback, and soft start protection. |
| Water Cooling | The equipment saves water, equipped with 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 ventilated with hydrogen, nitrogen, argon, carbon monoxide, oxygen, etc. |
| Vacuum Degree | -0.1Mpa (can be customized to 1Pa, -1Pa, -0.01Pa, etc.) |
| Protection (2) | To prevent dangers caused by closed or blocked exhaust ports and excessive pressure in the furnace tube, this system is specially designed. Principle: Signals are obtained by electric contact pressure gauges or pressure sensors 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. |
| Control Method | 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 is limited within the rated range to protect heating elements from excessive current/voltage impact, ensuring safe and reliable control effect and precision. |
| Display Parameters | Real-time 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 | Adopts 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. Equipped with AI adjustment algorithm with curve fitting function for smooth curve control. |
| Multiple Curve Input | 30-segment program control (50 segments customizable): 30 (50) segments for one curve, 14 (28) segments each for two curves, 9 (15) segments each for three curves, 5 (9) segments each for five curves. Multiple curves can be input simultaneously and called arbitrarily. |
| Communication Interface | The electric furnace is equipped with an RS485 communication interface with a communication distance of up to 1600 meters. It can be controlled by a computer for starting, pausing, stopping, setting/reading heating curves, and parameter adjustment, with high reliability and easy operation. The computer display shows rich content, including measured value, set value, output value, segment time, segment number, heating curve, and power percentage curve. Heating curves can be stored in the computer, called arbitrarily, and modified (set values and common parameters). Historical curves and reports can be saved for a long time with selectable time intervals (1s-1h). |
| Random Accessories | 2 heating elements, 2 sets of rod tools, 1 pair of crucible tongs, 1 pair of high-temperature gloves, 1 DVD data disk. |
| 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). |
| Customer Optional Accessories | 1. Crucibles, saggars, corundum furnace pads / silicon carbide pads 2. Computer control software and hardware 3. Touchscreen-controlled 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, it is recommended that the maximum heating and cooling rate be 10-20℃/min (excessively fast heating at high temperatures will shorten the service life of heating elements). 2. After using this hot press furnace for a period of time, tiny 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 introduce corrosive gases; if strong corrosive gases such as S and Na need to be introduced, please inform us in advance, and we will perform special treatment on the furnace chamber. 4. High-temperature solutions must not leak onto the furnace bottom; a backing plate or alumina powder can be used for isolation to avoid this. 5. The instrument should be placed in a well-ventilated and dry 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. |
| Name | Specification Model | Furnace Chamber Size (mm) (Length × Width × Height) | Voltage (AC V) | Power (kw) | Weight (kg) |
| Vacuum Atmosphere Hot Press Furnace | GWL-1600VSF4-RYDZ/D200/300 | Diameter 200 × 300 | 380 | 10 | 1500 |
| GWL-1600VSF4-RYDZ/D300/300 | Diameter 300 × 300 | 380 | 15 | 1800 | |
| GWL-1600VSF4-RYDZ/D300/500 | Diameter 300 × 500 | 380 | 18 | 2700 | |
| GWL-1600VSF4-RYDZ/D500/500 | Diameter 500 × 500 | 380 | 35 | 4700 | |
| GWL-1600VSF4-RYDZ/D500/800 | Diameter 500 × 800 | 380 | 45 | 5600 | |
| GWL-1600VSF4-RYDZ/D800/800 | Diameter 800 × 800 | 380 | 85 | 98000 | |
| GWL-1600VSF4-RYDZ/D800/1000 | Diameter 800 × 1000 | 380 | 120 | 516000 |
