Muffle furnace FMU-22

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Overview
The Labotemp FMU-22 is a laboratory muffle furnace designed for high-temperature sintering, ceramic research, powder metallurgy experiments and composite material processing requiring stable thermal performance up to 1700 °C. The FMU-22 features a 12 L front-loading chamber (300 × 200 × 200 mm) heated by premium 1800-grade MoSi₂ rods and insulated with vacuum-formed, high‑purity alumina polycrystalline fiber to minimize contamination and ensure repeatable results.

Design & Safety
The oven uses a dual-shell carbon casing with built-in forced-air convection to keep external surface temperature within ambient +45 °C during continuous operation. A robust powder-coated steel exterior and heavy-duty insulated support feet provide mechanical stability and reduce heat transfer to workbenches. Options include gas inlet/outlet, exhaust port, touchscreen and RS485 communication for atmosphere-controlled processing.

Key advantages

• High-temperature capability: continuous operation ≤1600 °C with 1700 °C peak using MoSi₂ heating rods.
• High-precision control: 50-segment programmable digital PID controller with B-type thermocouple delivers ±1 °C accuracy and repeatable thermal profiles.
• Safe laboratory use: air-cooled dual-shell design maintains a cool exterior for safe daily operation.

Features

• 50-segment PID control with programmable profiles.
• Front-loading chamber for easy sample handling and reduced heat exposure.
• Precision insulated door assembly to limit heat loss and improve thermal efficiency.
• Fast heating and rapid recovery after door opening.
• Uniform heat distribution for consistent processing.
• Independent power and process indicators and digital display for status monitoring.
• Optional touchscreen and RS485 interface for remote control and data logging.

Applications

• Advanced ceramic sintering
  Precise, contamination-controlled sintering up to 1700 °C.
• Powder metallurgy research
  Densification and heat treatment of metal powders for R&D.
• Composite material processing
  Thermal processing and evaluation of high-temperature composites.
• Refractory material testing
  Firing and heat-resistance evaluation in laboratory settings.
• Glass and specialty materials
  High-temperature melting, annealing and thermal characterization.
• Metallurgical heat treatment
  Annealing, oxidation studies and high-temperature testing of alloys.

Optional accessories

• Touchscreen
• RS485 communication interface
• Gas inlet/outlet
• Exhaust port

Technical specifications

• Maximum temperature: 1700 °C
• Continuous operating temperature: ≤ 1600 °C
• Heating element: 1800-grade MoSi₂ rods
• Temperature sensor: B-type thermocouple
• Temperature control: 50-segment programmable digital PID controller
• Temperature accuracy: ±1 °C
• Chamber insulation: vacuum-formed high-purity alumina polycrystalline fiber
• Power supply: 220 V 50/60 Hz, single-phase
• Rated power: 6 kW
• Cooling method: built-in forced-air convection
• Inner dimensions (W × D × H): 300 × 200 × 200 mm
• Outer dimensions (W × D × H): 600 × 695 × 920 mm
• Chamber volume: 12 L
• Structure: dual-shell with forced-air cooling
• Surface temperature: ambient +45 °C
• Gross weight: 250 kg
• Package size: 700 × 800 × 1070 mm