- +86-13526935931
- gwdlthermo@gwdl.com
Vacuum atmosphere frit furnace: The furnace chamber and roof are water-cooled. It features a high-purity alumina crucible with top-loading and bottom-discharging design, and is equipped with a 5L heating feeding bin. The vacuum degree can reach -0.098Mpa, making it suitable for melting high-purity materials such as glass. It supports long-term continuous operation without shutdown, and the outer shell temperature is less than 45°C.
The 5L Vacuum Atmosphere Frit Furnace is a specialized high-temperature furnace designed for glass frit melting, ceramic sintering, and advanced material processing under vacuum or controlled atmosphere (inert/reducing gases). It features a 5-liter chamber capacity, making it ideal for lab-scale R&D, small-batch production, and quality control testing.
| Category | 1200℃ |
| Model | GWL-1200R5 |
| Crucible Volume | 5L |
| Crucible Material | High-purity alumina (99.9%) |
| Way of Placing and Taking Out Crucibles | Placed from the upper part and taken out from the lower part |
| Discharge Port | Diameter 6mm, equipped with air cooling |
| Loading and Unloading | Loading from the upper part, unloading from the lower part |
| Feeding Bin | 5L feeding bin designed with heating function (within 400℃); DN80 valve and water-cooled pipeline are designed at the lower part of the bin |
| Power Supply (AC) | 380V |
| Maximum Operating Temperature | 1250℃ |
| Long-term Operating Temperature | 1200℃ |
| Control Range | 100 to 1600℃ |
| Temperature Measuring Element | K-type thermocouple, measuring range 0-1350℃ |
| Installation Position of Heating Elements | Vertically installed 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 15℃/min (fastest) |
| Heating Elements | Imported U-type silicon carbide rods |
| Furnace Body | Processed by CNC machine tools, manufactured through polishing, grinding, pickling, phosphating, plastic powder spraying, high-temperature baking, etc., 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 |
| Furnace Body Structure | The electric furnace body adopts internationally advanced air-cooled double-layer structure with vacuum sealing; effective water-cooled and air-cooled guide partitions enable overall cold air circulation in the furnace shell, which finally cools the conductive sheets of heating elements before being discharged out of the furnace body, avoiding high-temperature oxidation of conductive sheets and ensuring a good working environment |
| Lower Furnace Door Opening Method | The furnace door opens 180 degrees axially to the side, locked and sealed by a handwheel |
| Furnace Shell Temperature | The shell temperature is ≤45℃ during long-term continuous operation |
| Water-cooled Parts | Furnace chamber top |
| Vacuum Pump and Vacuum Value | Adopts two-stage direct rotary vane vacuum pump; |
| vacuum value | -0.098Mpa |
| Pressure Resistance | The furnace chamber steel plate is 6-20mm thick, with double-sided welding, resistant to positive pressure of 0.2Mpa |
| Gas Inlet and Outlet Paths | 4 gas inlets around the lower part, 1 at the top feeding port; 1 DN20 gas outlet at the top; stainless steel valves are equipped for inlet and outlet pipelines |
| Pressure Detection | 1 pointer pressure gauge with double indication (positive pressure and negative pressure); 1 digital display pressure gauge with double indication (positive pressure and negative pressure) |
| Random Accessories | 2 heating elements, 2 sets of rod tools, 1 pair of crucible tongs, 1 pair of high-temperature gloves |
| 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) |
| 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 a wooden case. 2. Free door-to-door delivery within urban areas in China. 3. We shall be responsible for any damage to the electric furnace during transportation. 4. Logistics methods: transportation by truck, train, ship (for export), or air (for export); for short distances, our company will arrange special vehicles for delivery. |
| Name | Specification Model | Standard Crucible Material | Overall Dimensions (mm) | Crucible Volume (L) | Power (kw) | Weight (kg) |
| 1200℃ Box-type Electric Furnace | GWDL-1200R-A-1.6L | High-purity fused silica ceramic | L=1120, W=800, H=1370 | 1.6L | 6 | 180 |
| GWDL-1200R-A-3L | High-purity fused silica ceramic | L=1120, W=800, H=1370 | 3L | 10 | 220 | |
| GWDL-1200R-A-5L | High-purity fused silica ceramic | L=1120, W=800, H=1370 | 5L | 12 | 240 | |
| GWDL-1200R2-A-10L | High-purity fused silica ceramic | L=1825, W=1825, H=2100 | 10L | 15 | 300 | |
| GWDL-1200R2-A-17L | High-purity fused silica ceramic | L=1825, W=1825, H=2100 | 17L | 18 | 450 | |
| GWDL-1200R2-A-50L | High-purity fused silica ceramic | Customized | 50L | 45 | 700 | |
| GWDL-1200R2-A-70L | High-purity fused silica ceramic | Customized | 70L | 60 | 900 |
| Name | Function Introduction | Options | Function Code |
| Temperature Controller | Standard 50-segment heating curve; imported instruments can be selected alternatively (B) | Two choices | AB |
| Touchscreen | Chinese menu, storage of multiple heating process curves, storage of historical curves and data reports (7-inch) | Four choices | C |
| IoT Interface | The RS485 communication interface of the electric furnace reads and writes real-time data such as furnace start, pause, stop, heating curve, allowable time, etc. | D | |
| Computer Control Software and Hardware | The furnace can be controlled via computer for starting, pausing, stopping, setting heating curves, reading heating curves, and parameter adjustment with high reliability and easy operation. It displays measured value, set value, output value, segment time, segment number, heating curve, and power percentage curve. Heating curves can be stored, set values and common parameters modified via computer. Historical curves and reports can be saved for a long time with selectable time intervals (1s-1h). | E | |
| PLC | Adopts Siemens PLC control (capable of reading and writing furnace start, pause, stop, heating curve, time, temperature curve, atmosphere, flow, switch quantity, power supply, power); opens ports for serial and parallel data with upstream and downstream equipment | F | |
| Air Inlet | Float flowmeter + manual valve; the number of flowmeters, maximum output, and gas medium can be selected | Two choices | K |
| Digital display mass flowmeter; the number of flowmeters, maximum output, and gas medium can be selected | M | ||
| Air Outlet | Exhaust port, manually opened; DN30 | Two choices | T |
| Electrically opened, automatically opened or closed at segment N according to the heating curve | P | ||
| Fully Automatic Air Inlet and Outlet | Electric exhaust port and electric air inlet can be associated with heating curve segments to be automatically opened and closed at any temperature segment; PLC is used to realize automatic opening and closing during heating (on the premise of selecting the touchscreen function) | Y | |
| Vacuum Atmosphere | The feeding chamber, high-temperature furnace chamber as a whole, and discharging chamber adopt vacuum-sealed shells to prevent oxidation, and can be used with atmosphere | R | |
| High-Temperature Stirrer | Uses frequency converter and reducer for speed regulation; the stirrer rod is made of high-temperature ceramic | Z | |
| Independent Control Cabinet | Control system is separated from the furnace body; an independent control cabinet (1600x600x400) is added, and the length of the control cable is extended (within 5 meters) | Q | |
