1400℃ electric top-opening fire assay furnace with high-precision ±1℃ control, SiC heating rods and batch melting design. Adopts double air cooling and program temperature control for precious metal fire assay smelting.
| Category | Specification |
|---|---|
| Chamber Dimension | 600×1050×300mm |
| Power Supply | 380V,50Hz; 22kW |
| Sample Capacity | 50 pcs of 65g crucibles (Bottom Dia.105 × Top Dia.165 × Height 55mm) |
| Max Temperature | 1400°C |
| Long-term Operating Temperature | 1350°C |
| Temperature Control Range | 80–1400°C |
| Thermocouple | S-type Platinum-Rhodium (0–1600°C) |
| Heating Element | U-shaped silicon carbide rods, vertically mounted on furnace chamber wall |
| Temperature Control Accuracy | ±1°C |
| Temperature Uniformity | ±1°C (Multi-zone control available for larger chambers) |
| Heating Rate | Adjustable: Max 30°C/min (non-linear), Min 1°C/hour |
| Furnace Body | CNC machined, acid & heat resistant coating, two-tone decorative finish |
| Cooling System | Double-layer air cooling structure, directional airflow to prevent oxidation |
| Furnace Door Mechanism | Electro-pneumatic top-opening type; opening height controllable via foot switch or touch screen |
| Crucible Tongs (Custom-made) | Fabricated from 304 stainless steel |
| Cast Iron Mould Trolley | Carbon steel housing with plastic spraying coating |
| Cast Iron Mould | For holding or cooling metal samples during high-temperature melting to ensure full forming and facilitate subsequent analysis |
| Refractory Lining | High-purity lightweight alumina board (crack resistant & energy saving) |
| Insulation Layers | Three layers: alumina fiber + silica-alumina fiber + polycrystalline alumina |
| Safety Protection | Dual-loop control with overvoltage / overcurrent / overtemperature protection |
| Display Parameters | Real-time temperature, power output, voltage, current, program segment |
| Communication | RS485 interface (1200m range) for PC-based curve programming & data logging |
| Touch Screen | 7-inch touch screen, supports multi-segment heating program setting, stores historical curves and data reports, displays real-time power and alarm messages |
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