- +86-13526935931
- gwdlthermo@gwdl.com
The 1700℃ lifting furnace features an adjustable heating rate of 1-40℃/min. The furnace chamber is made of imported refractory materials from Germany, with four-layer thermal insulation that achieves over 80% energy saving, and the outer shell temperature is ≤45℃. The loading platform adopts lead screw lifting combined with optical axis guiding, along with 3-4 layers of step-type soft sealing.
| Maximum Operating Temperature | 1750℃ |
| Long-term Operating Temperature | 1700℃ |
| Control Range | 80 to 1700℃ |
| Temperature Measuring Element | Thermocouple (Type B), measuring range 0-1820℃ |
| Installation Position of Heating Elements | Around the furnace |
| 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 chambers to achieve better temperature uniformity) |
| Heating Rate | Freely adjustable, with a range of 40℃/min (fastest) to 1℃/h (slowest) |
| Heating Elements | High-temperature imported 1800U silicon molybdenum rods. |
| 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 | The electric furnace body adopts an air-cooled double-layer structure. Effective air-cooled guide partitions enable overall cold air circulation in the furnace shell, which finally cools the heating element conductive plates before being discharged, avoiding high-temperature oxidation of the conductive plates and ensuring a good working environment. |
| Loading Platform Rotation | This lifting furnace can be equipped with a high-vacuum aerospace-grade power conversion joint, and the rotation speed is adjustable via an external speed-regulating motor. |
| After Loading Platform Rises | After the loading platform rises, a stirring rod can be inserted from the upper part of the furnace body to realize the stirring function. |
| Loading Platform Lifting | The loading platform is lifted by two lead screws with four optical axes for guidance, and the lifting speed is adjustable. |
| Combination of Loading Platform and Furnace Mouth | The furnace door opens by vertical lifting from the bottom; the loading platform and furnace mouth are equipped with 3-4 layers of tapered step soft seals, with elastic high-temperature sealing strips arranged on the steps, which can effectively absorb the expansion of refractory materials between the furnace mouth and the loading platform. |
| Refractories for Loading Platform | The loading platform is made of a combination of vacuum-formed high-purity alumina lightweight materials and high-purity alumina hollow sphere plates, ensuring both thermal insulation performance and load-bearing capacity. |
| Furnace Chamber Refractory Materials | The furnace lining uses imported German MESCHUPP vacuum-formed high-purity alumina fiber lightweight plates. Positions prone to collision during material handling (furnace bottom) use high-purity lightweight hollow spherical alumina plates, featuring high operating temperature, low heat storage, resistance to rapid heating/cooling, no cracking, no slag dropping, and good thermal insulation performance (energy-saving effect is over 80% compared to old-fashioned electric furnaces). |
| Insulation Materials | Four-layer insulation: alumina fiber cotton, alumina fiberboard, alumina polycrystalline fiberboard, and imported materials, with an energy-saving effect over 80% compared to old-fashioned electric furnaces. |
| 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. |
| Water Cooling | The equipment saves water and is equipped with a high-temperature circulating water pump, a circulating water tank, and a water radiator; water-cooled parts include the furnace top, furnace mouth, furnace door, and shell. |
| Atmosphere | The electric furnace can be fed with hydrogen, nitrogen, argon, carbon monoxide, oxygen, etc. |
| Vacuum Degree | -0.1Mpa (can be customized to 1Pa, -1Pa, -0.01Pa, etc.) |
| Additional Protection | To prevent dangers caused by closed exhaust ports, blocked exhaust ports, or excessive pressure in the furnace tube, this system is specially designed. Principle: Signals are obtained by an electric contact pressure gauge or pressure sensor to drive the control module to close the electromagnetic inlet valve and start the electromagnetic exhaust valve and alarm, thereby 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 | 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. |
| Multiple Curve Input | 30-segment program control function (50-segment customizable). Settings can be input as follows: one curve with 30 (50) segments, two curves with 14 (28) segments each, three curves with 9 (15) segments each, five curves with 5 (9) segments each. Multiple curves can be input simultaneously and called arbitrarily during use. |
| Communication Interface | Equipped with an RS485 communication interface with a maximum communication distance of 1700 meters. It allows computer control of furnace operations, including start, pause, stop, heating curve setting/reading, and parameter adjustment, with high reliability and ease of use. The computer interface displays rich content, including measured values, set values, output values, segment time, segment number, heating curves, and power percentage curves. Heating curves can be stored on the computer, with stored curves editable for set values and common parameters. Historical curves and reports can be filtered by time interval (1s-1h) and saved long-term. |
| Random Spare Parts | 2 heating elements, 2 sets of rod tools, 1 crucible tong, 1 pair of high-temperature gloves |
| Warranty Scope and Period | The electric furnace comes with 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 temperature controller 4. Additional exhaust ports 5. Consumables: heating elements 6. Additional observation ports |
| Notes | 1. To avoid affecting the service life of the electric furnace, we recommend a maximum heating and cooling rate of 10-20℃/min (excessively fast heating at high temperatures will shorten the service life of heating elements). 2. After using this lifting 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. Introducing corrosive gases is not recommended. If strong corrosive gases such as S or Na need to be introduced, please inform us in advance, and we will specially treat the furnace chamber. 4. Do not allow high-temperature solutions to leak onto the furnace bottom. To avoid this, use a backing plate or alumina powder for isolation. 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 crucible tong, 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 in sponge paper, then wrapped with plastic film, and finally packed in a wooden box. 2. Free door-to-door delivery domestically (free delivery within urban areas). 3. We shall bear any damage incurred during transportation of the electric furnace. 4. Logistics methods: Transportation by car, railway, ship (for export), or air (for export). For nearby destinations, our company dispatches a special vehicle for transportation (packaged with wooden pallets and cartons). |
