- +86-13526935931
- gwdlthermo@gwdl.com
The furnace lining is made of high-purity alumina lightweight material, and silicon carbide rods can be selected as heating elements. Built-in/external heat exchange controls cooling. Touch screen + RS485 control, with 30-segment curve storage and retrieval. Dual-circuit protection, load capacity of 3000KG, supporting alternate use of dual loading platforms.
| Category | 1200°C, 1400°C, 1600°C, 1700°C |
| Model | GWL-SS-H/C |
| Number of Loading Platforms | One or two loading platforms |
| Power Supply (AC) | Three-phase five-wire 380V |
| Control Range | 80 to 1650°C |
| Temperature Measuring Element | K-type thermocouple, measuring range 0-1320°C |
| Installation Position of Heating Elements | Around and at the 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) |
| Heating Rate | Freely adjustable, with a range from a maximum of 40°C per minute (40°C/min) to a minimum of 1°C per hour (1°C/h) |
| Cooling Rate | Freely adjustable, with a maximum cooling rate of 40°C per minute (40°C/min) |
| Heating Elements | High-temperature alloy resistance wire (imported with molybdenum, surface temperature up to 1500°C) or silicon carbide rods are used as heating elements. U-shaped equal-diameter silicon carbide rods, made mainly from high-purity a-SiC, are non-metallic high-temperature electric heating elements. They feature fast heating, high thermal efficiency, long service life, resistance to deformation at high temperatures, easy installation, operation and maintenance, and a maximum temperature of 1500°C. |
| Cooling Principle | Built-in type (applicable range: room temperature to 1000°C): A high-temperature heat exchange device is used inside the heating chamber. The tube wall of the heat exchange device absorbs heat from the heating chamber, and the absorbed heat is quickly carried out of the heating chamber through the air flow inside the tube, thus achieving the function of rapid program-adjustable cooling without direct cold air blowing into the heating chamber. |
| External type (applicable range: room temperature to 800°C): The interior of the heating chamber is cooled by an external heat exchanger. | |
| Furnace Body | The furnace body is processed by CNC machine tools, and manufactured through polishing, grinding, pickling, phosphating, plastic powder spraying, and high-temperature baking. It adopts a two-color design with a novel and attractive appearance, and has the advantages of oxidation resistance, acid and alkali resistance, corrosion resistance, high temperature resistance, and easy cleaning. It is of export quality with mirror baking paint. |
| Furnace Structure | The electric furnace adopts an air-cooled double-layer furnace structure. Effective air-cooled guide partitions enable overall cold air circulation in the furnace shell, which finally cools the conductive sheets of the heating elements before being discharged, avoiding high-temperature oxidation of the conductive sheets and ensuring a good working environment. |
| Loading Platform In/Out Mode | The loading platform and the furnace chamber are designed separately. The in/out and lifting of the loading platform are controlled by PLC, with centralized control and operation via a touchscreen. |
| Loading Platform Braking Mode | The in/out and lifting of the loading platform use photoelectric isolation switch sensing signals, which are processed by PLC and controlled by commands from the touchscreen. |
| Loading Platform In/Out | In/out is driven by a stepless deceleration motor with lead screws and guides, with adjustable speed. |
| Loading Platform Lifting | The loading platform is lifted by electric double lead screws, equipped with a manual power-off lowering mechanism (for emergency). |
| Cooperation Between Furnace Mouth and Refractories of Loading Platform | The furnace mouth and refractories of the loading platform are sealed with stepped intersections. The refractories have angles both above and below. The opening angle of the loading platform increases, and gradually decreases as the loading platform closes. |
| Loading Capacity of Platform | 3000KG (can be customized according to customer requirements) |
| Refractory Materials | The furnace lining is made of vacuum-formed high-purity alumina lightweight material. Lightweight hollow sphere alumina plates are used in positions that are easy to be hit when taking and placing materials and load-bearing positions (furnace mouth, furnace bottom). They have the advantages of high service temperature, small heat storage, resistance to rapid heating and cooling, no cracking, no slag dropping, and good thermal insulation performance (energy-saving effect is more than 80% that of old-fashioned electric furnaces). |
| Thermal Insulation Materials | Three layers of thermal insulation are adopted: alumina fiber cotton, alumina fiberboard, and alumina (polycrystalline) fiberboard. The energy-saving effect is more than 80% that of old-fashioned electric furnaces. |
| Temperature of Furnace Shell | Less than 45°C during long-term (20 days) continuous operation without shutdown. |
| Protection | An integrated module control unit is adopted with accurate control precision. It is designed with dual-loop control and dual-loop protection, featuring protections against overshoot, undershoot, thermocouple breakage, phase loss, overvoltage, overcurrent, overtemperature, current feedback, and soft start. |
| Control | Closed-loop thyristor module trigger control with phase-shift trigger mode is adopted. The output voltage, current, or power is continuously adjustable, with the characteristics of constant voltage, constant current, or constant power. 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 value, the output current of the voltage regulator is limited within the rated current range to ensure the normal operation of the output and the voltage regulator. At the same time, the voltage loop also participates in the regulation, so that the output current of the voltage regulator is limited within the rated current range, and the output current and voltage are maintained constant under the premise of sufficient regulation margin. This protects the heating elements from the impact of excessive current and voltage, achieving safe and reliable control effect and control precision. |
| Display Parameters | Temperature, temperature segment number, segment time, remaining time, output power percentage, voltage, current, etc. |
| Buttons | Imported buttons with a service life of more than 100,000 times and LED indicators are adopted. |
| Input of Multiple Curves | 30-segment program control function, which can input and set: one curve with 30 segments, two curves with 14 segments each, three curves with 9 segments each, and five curves with 5 segments each. Multiple curves can be input at the same time and can be called arbitrarily when in use. |
| Communication Interface | The electric furnace is equipped with an RS485 communication interface, with a communication distance of up to 1000 meters. It can centrally control the start, pause, stop of the electric furnace, set and read the heating curve, and set parameters via the touchscreen, with high reliability and easy operation. The computer screen displays rich content, including measured value, given value, output value, segment time, segment number, heating curve, and power percentage curve. The heating curve can be stored via the computer, and the stored heating curve can be called arbitrarily, and the given value and common parameters can be modified. The time interval of historical curves and historical reports can be selected (1s-1h) and can be saved for a long time. |
| Accessory Parts | 2 heating elements, 2 sets of rod tools, 1 pair of crucible tongs, 1 pair of high-temperature gloves, 1 DVD data disk (software, electronic manual, video tutorial). |
| 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). |
| Customer Optional Accessories | 1. Crucibles, saggars, corundum furnace pads / silicon carbide pads (see electric furnace accessories for details) 2. Computer control software and hardware (click to view) 3. Touchscreen temperature controller (click to view) 4. Additional exhaust port 5. Consumables: heating elements 6. One more loading platform (total of two loading platforms, which can be used alternately to improve efficiency and save electricity costs) 7. Additional observation port |
| Notes | 1. To avoid affecting the service life of the electric furnace, we recommend a maximum heating and cooling rate of 10-20°C/min (excessively fast heating will shorten the service life of the heating elements). 2. This electric furnace has no vacuum sealing structure, so flammable and explosive gases must not be introduced. 3. After using this electric 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. 4. It is not recommended to introduce 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. 5. Do not let high-temperature solutions leak onto the furnace bottom. To avoid this, a pad or alumina powder can be used for isolation. 6. 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 DVD data disk, 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). |
| Name | Furnace Chamber Size (mm) (Length×Width×Height) | Overall Dimensions (mm) | Voltage (ACV) | Power (kw) | Weight (kg) |
| Heating and Cooling Dual-Control Lifting Furnace | 500×500×500 | B=1500, F=1500 | 380 | 25 | 1500 |
| A=2500, J=1300 | |||||
| 800×500×500 | B=1800, F=1500 | 380 | 40 | 1800 | |
| A=2500, J=1300 | |||||
| 800×800×800 | B=1800, F=1800 | 380 | 75 | 2700 | |
| A=2800, J=2000 | |||||
| 1300×750×600 | B=2300, F=1750 | 380 | 65 | 2700 | |
| A=1200, J=1800 | |||||
| 1300×600×600 | B=2300, F=1200 | 380 | 60 | 2600 | |
| A=2600, J=1800 | |||||
| 1500×800×800 | B=2500, F=1800 | 380 | 120 | 3800 | |
| A=2800, J=2000 | |||||
| 2500×800×800 | B=3500, F=1800 | 380 | 240 | 5200 | |
| A=2800, J=2000 | |||||
| 5000×800×600 | B=6500, F=1800 A=2800, J=2000 | 380 | 350 | 9000 | |
| 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 | |
