1800°C Tube Furnace | DFH-2, DFH-3 & DFH-4
1800°C Tube Furnace
The DFH-2, DFH-3 and DFH-4 tube furnaces rated to 1800°C are designed for ultra-high-temperature applications involving ceramic, metal, electronic and powder materials, including sintering, atmosphere heating, heat treatment, R&D testing and quality inspection. The 16-step programmable controller supports ramp-up and ramp-down profiles, with S.C.R. phase control, a Type B thermocouple and molybdenum disilicide heating elements. Select a model based on sample size, tube inner diameter, heated-zone length, target temperature, hold time, atmosphere requirements and available site power.
Up to 1800°C tube furnace
The typical operating range is 1650°C–1800°C for sintering, heat treatment, atmosphere heating and ultra-high-temperature testing.
16-step program control
The 16-step programmable controller supports ramp profiles for experiments requiring staged heating, holding or cooling.
Molybdenum disilicide elements
Molybdenum disilicide heating elements work with a Type B thermocouple and S.C.R. phase control for 1800°C-class tube furnace applications.
How to select an 1800°C tube furnace
Consider sample size, tube inner diameter, heated-zone length, batch quantity, target temperature, hold time, gas introduction or atmosphere control, ramp profile, site power and available space. DFH-2 suits smaller tubes and samples; DFH-3 suits medium samples and longer heated zones; DFH-4 suits larger tubes or samples. Confirm the final model against the sample, test objective and quality-control process.
Product specifications
| Model | DFH-2 | DFH-3 | DFH-4 |
|---|---|---|---|
| Temperature range | Typically 1650°C–1800°C | ||
| Temperature controller | 16-step programmable controller with ramp-up and ramp-down profile control | ||
| Temperature accuracy | 1°C% | ||
| Thermocouple | Type B | ||
| Control system | S.C.R. phase control | ||
| Heating element | Molybdenum disilicide heating rods | ||
| Chamber material | Imported high-temperature-resistant fiberboard lining | ||
| Cabinet material | Powder-coated galvanized steel | ||
| Insulation | Multi-layer insulation with a double air gap, ceramic fiberboard and ceramic wool | ||
| Safety protection | Power, over-temperature and over-current protection | ||
| Tube inner dimensions / length | ID φ55 x 200mm L | ID φ80 x 300mm L | ID φ110 x 400mm L |
| Overall dimensions W x D x H | 500 x 500 x 1100mm | 550 x 600 x 1200mm | 600 x 600 x 1250mm |
| Voltage / current | 220V / 10A | 220V / 14A | 220V / 20A |
| Note | Custom heated-zone lengths may be evaluated; please provide the required length for confirmation. | ||
Applications and product features
Suitable for: Ceramic, metal, electronic and powder materials; research institutes, school laboratories and factory processes; quality inspection, atmosphere heating, sintering and general ultra-high-temperature heat treatment.
Features: A 16-step programmable controller supports ramp profiles. S.C.R. phase control, a Type B thermocouple and molybdenum disilicide elements support material testing and heat treatment requiring tube furnace temperatures up to 1800°C.
Customization: Heated-zone length can be evaluated for customization. For special tube dimensions, gas flowmeters, piping, vacuum or controlled-atmosphere requirements, provide sample and process details for review.
Frequently asked questions
Q1: How do I choose between DFH-2, DFH-3 and DFH-4?
Compare tube inner diameter, heated length, sample size and batch quantity. DFH-2 has a 55mm ID x 200mm tube for smaller samples; DFH-3 has an 80mm ID x 300mm tube for medium samples; DFH-4 has a 110mm ID x 400mm tube for larger diameters or longer samples. Confirm the model against your sample and workflow.
Q2: What applications suit an 1800°C tube furnace?
Applications include ceramic sintering, metal heat treatment, powder processing, high-temperature testing of electronic materials, atmosphere heating, R&D and quality inspection. Suitability depends on material, target temperature, atmosphere and process time.
Q3: Should I choose a 1600°C or 1800°C tube furnace?
For typical operating temperatures around 1400°C, consider the 1600°C model. For higher-temperature sintering, special ceramics or powders, or ultra-high-temperature heat-treatment tests, evaluate the 1800°C model. Confirm based on the sample and process.
Q4: Can the heated-zone length be customized?
A specified heated-zone length can be evaluated. Provide the required length, sample size, tube diameter, target temperature and atmosphere; final availability depends on model and supply version.
Q5: What information should I provide when requesting a quote?
Provide sample material, dimensions and weight; required tube diameter and heated-zone length; typical and maximum temperatures; hold time; gas introduction needs; ramp profile; site power and installation space.
Specifications are compiled from current product information. Confirm tube dimensions, heated-zone length, controls, power, gas piping and supply version for the selected model and application.