Annealing furnace FMU-22

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Product Overview
Labotemp Muffle Furnace FMU-22 is a high-temperature laboratory muffle furnace engineered for demanding sintering, ceramic research, metal material testing, and advanced composite processing applications requiring stable thermal performance up to 1700°C. Built around premium 1800-grade MoSi2 heating rods with excellent high-temperature oxidation resistance, this furnace delivers consistent and clean heat treatment in a 12-litre chamber (300 × 200 × 200 mm). The high-purity ultra-clean alumina polycrystalline fiber insulation, vacuum-formed for exceptional chemical stability, effectively prevents sample contamination and ensures sintering purity across critical research workflows.

Design & Safety
The dual-carbon shell air-cooled structure with built-in forced convection keeps the furnace surface within ambient +45°C, ensuring operator safety during continuous high-temperature operation. A 50-segment programmable digital PID intelligent control system paired with precision B-type thermocouples delivers ±1°C temperature accuracy and repeatable thermal profiles for complex research protocols. With 6 kW single-phase power supply and optional gas inlet/outlet, exhaust port, touchscreen, and RS485 communication interface, the FMU-22 supports both standard and atmosphere-controlled sintering environments.

Key Features

• Extreme temperature capability: MoSi2 heating rods enable stable continuous operation up to 1600°C with 1700°C peak performance.
• Precise programmable control: 50-segment PID controller with B-type thermocouples delivers ±1°C accuracy for repeatable results.
• Safe surface design: Air-cooled dual-carbon shell structure maintains cool exterior for secure daily laboratory operation.
• Robust powder-coated steel exterior ensures excellent corrosion resistance and long-term structural durability.
• Front-loading chamber design enables convenient sample placement and retrieval while minimizing heat exposure.
• Precision-engineered insulated door assembly minimizes heat loss and improves thermal efficiency.
• Fast heating capability with excellent temperature recovery after door opening.
• Uniform heat distribution throughout the chamber supports reliable and repeatable processing results.
• Independent power and process control indicators for clear operational status monitoring.
• Digital display for convenient monitoring of process parameters and operating conditions.
• Heavy-duty insulated support feet provide stability and reduce heat transfer to benches.
• Safety-oriented design with efficient ventilation arrangement for reliable long-term operation.

Applications

• Advanced Ceramic Sintering
  Designed for sintering advanced ceramics at temperatures up to 1700°C with precise thermal control and contamination-free heating.
• Powder Metallurgy Research
  Suitable for densification and heat treatment of metal powders used in research and material development.
• Composite Material Processing
  Supports thermal processing and evaluation of high-temperature composite materials under stable heating conditions.
• Refractory Material Testing
  Used for firing, heat resistance evaluation, and quality assessment of refractory materials in laboratories.
• Glass and Specialty Material
  Ideal for high-temperature melting, annealing, and thermal characterization of specialty glass and inorganic materials.
• Metallurgical Heat Treatment
  Performs annealing, oxidation studies, and high-temperature material testing for ferrous and non-ferrous alloys.

Optional Accessories

• Touch screen
• RS485 communication interface
• Gas inlet/outlet
• Exhaust port

Technical specifications

• Maximum Temperature: 1700 °C
• Continuous Operating Temperature: ≤ 1600 °C
• Heating Element: Premium 1800-grade MoSi₂ (Silicon Molybdenum) rods
• Temperature Sensor: B-type thermocouple
• Temperature Control: 50-segment programmable digital PID controller
• Temperature Accuracy: ±1 °C
• Chamber Insulation: High-purity ultra-clean alumina polycrystalline fiber with vacuum forming
• Power Supply: 220 V 50/60 Hz
• Rated Power: 6 kW
• Cooling Method: Built-in forced air convection
• Inner Chamber Dimensions (W × D × H): 300 × 200 × 200 mm
• Outer Dimensions (W × D × H): 600 × 695 × 920 mm
• Chamber Volume: 12 L
• Structure: Dual-chamber shell with forced air cooling
• Surface Temperature: Ambient +45 °C
• Gross Weight: 250 kg
• Package Size: 700 × 800 × 1070 mm