The 1800℃ ultra-high-temperature box furnace features a fiber furnace chamber made of imported materials and a joint venture ultra-high-temperature silicon molybdenum rod, allowing for continuous operation at temperatures up to 1750°C. The furnace top is a reinforced composite structure, ensuring no collapse over long-term use.
We offer three high-temperature box furnaces at 1700°C, 1400°C, and 1200°C to meet your various experimental temperature needs.
This series of electric furnace is specifically designed for use in laboratories of colleges and universities, research institutions, and industrial and mining enterprises for sintering, melting, and analyzing metal, non-metal, and other compound materials.
High-Temperature Box Furnace with 1800°C Features
Rated working temperature: 1800℃; Long-term operating temperature: 1750℃
Capacity 1-36L
High-quality U.S.-imported silicon molybdenum rods.
Japanese进口 ceramic fiber furnace lining with ultra-high temperature coating.
Top and side doors available for customization to keep operators away from heat sources.
PID intelligent automatic temperature control, 51 programmable stages.
Double-layer furnace shell with air circulation insulation; made of carbon steel, surface rust removed and electrostatic powder coated, meeting international laboratory standards.
Over-temperature alarm, automatic short-circuit and leakage protection, safe and worry-free.
1800°F Ultra-High Temperature Box Furnace: Furnace Chamber and Heating Elements

Standard accessories for box furnace with ultra-high temperature of 1800°C
High-temperature gloves
Pot tongs
Manual
Optional Accessories
7-inch high-definition touch screen
Exhaust vent
Observation hole
Multi-layer kiln ware
Sapphire crucible
Communication Software
Technical Specifications of High-Temperature Box Furnace for 1800℃ Ultra-High Temperature
Ⅰ. Technical Specifications | |
| Rated operating temperature | 1800°C (<2 hours) |
| Long-term operating temperature | 1750℃ |
| Thermometer gauge | Artificial Intelligence PID gauge for automatic temperature control. Bi-directional anti-series可控硅 voltage regulation, providing precise control of the electric furnace temperature and featuring flow limiting function. Prevents unstable power supply voltage, sudden excessive current causing tripping, and burning of electrical components. ● 30-stage programmable curve, automatically heats, maintains, and cools according to preset programs. One-touch operation, no need for worker supervision. ● Built-in self-tuning function for temperature control parameters. ● Features over-temperature alarm, thermocouple breakage alarm, and automatic power supply cutoff for reliable protection. |
| Temperature Control Accuracy | ±1℃ |
| Heating Rate | 0-15°C/minute |
| Thermocouple | B Type (Dual Platinum Rhodium), thermocouple protection tube made of 99.7% pure alumina tube |
| Heating Element | Joint venture high purity silicon molybdenum rod |
| Furnace chamber | Three-layer full fiber furnace lining, forming the entire furnace chamber ● One layer: 1900 type polycrystalline alumina ceramic fiber. Ensures sufficient furnace chamber strength while maintaining excellent heat-insulating properties. ● Second Layer: 1430 Type Polycrystalline Aluminum Oxide Ceramic Fiber. ● Layer 3: Several pieces of thermal insulation. |
| Furnace Shell Structure | ● Made of high-strength carbon steel, after pickling, phosphatizing and rust removal, electrostatic spraying for a beautiful and elegant finish. ● Double-layer air-cooled furnace shell with 2-4 built-in cooling fans to ensure the surface temperature of the shell is below 60℃. |
| Furnace door | Side opening (also available with top or bottom door opening) |
| Product Warranty | From the date of self-inspection, the high-temperature box furnace is provided with a free one-year warranty. In case of any issues with the equipment, on-site repairs will be carried out, and lifetime technical support is guaranteed! 2. After the warranty period, parts are available at cost price. |

Standard dimensions of a 1800℃ high-temperature box furnace
| Model | Rated Temperature (°C) | Furnace chamber size (mm) (Width x Height x Depth) | Volume (L) | Power (kW) |
| DNR-1800-1 | 1800 | 100x100x100 | 1 | 2 |
| DNR-1800-2 | 1800 | 120x120x130 | 2 | 4 |
| DNR-1800-3 | 1800 | 150x150x150 | 3 | 5 |
| DNR-1800-5 | 1800 | 150x150x200 | 5 | 6 |
| DNR-1800-8 | 1800 | 200x200x200 | 8 | 8 |
| DNR-1800-12 | 1800 | 200x200x300 | 12 | 10 |
| DNR-1800-27 | 1800 | 300x300x300 | 27 | 12 |
| DNR-1800-36 | 1800 | 300x300x400 | 36 | 15 |
| Note: | Other furnace chamber sizes for the 1800°C ultra-high-temperature box furnace are customizable. | |||
We also manufacture three high-temperature box furnaces in 1700°C, 1400°C, and 1200°C models, catering to your various temperature experiment requirements.































