Annealing furnace L 9/11 BO

thermalcleaningheating

Product overview
The ashing furnaces L ../11 BO are specially designed for processes in which organic substances have to be evaporated from the charge, e.g. during debinding of small ceramic products after additive manufacturing. Other applications include ashing of samples (e.g. food), thermal cleaning of injection molding tools or loss on ignition determination. The furnaces feature a passive safety system and integrated exhaust gas post combustion. An exhaust gas fan extracts gases from the furnace while supplying fresh air to the furnace atmosphere so that sufficient oxygen is always available. Incoming air is guided behind the furnace heating and preheated to ensure good temperature uniformity. Exhaust gases are led directly from the furnace chamber to the integrated post combustion system for combustion and catalytic cleaning. After the debinding/ashing process (up to max. 600 °C), a sintering process up to max. 1100 °C can be performed.

Standard Equipment

• Tmax 600 °C for the incineration process
• Tmax 1100 °C for the subsequent process
• Three-side heating (both sides and bottom)
• Ceramic heating plates with embedded heating wire
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• Exclusive use of insulation materials without categorisation according to EC Regulation No. 1272/2008 (CLP) — no classified refractory ceramic fibres (RCF)
• Steel collecting pan protects the bottom insulation
• Spring-assisted closing of the furnace door (flap door) with mechanical locking against unintentional opening
• Thermal/catalytic post combustion, integrated in the exhaust channel, up to 600 °C in function
• Temperature control of post combustion can be set up to 850 °C
• Monitored exhaust air
• Inlet-air preheated through the bottom heating plate
• Over-temperature limiter with adjustable cutout temperature to protect furnace and load
• Controller with touch operation C550 (10 programs with each 20 segments)
• Defined application within the constraints of the operating instructions
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

• Process control and documentation via VCD software package for monitoring, documentation and control

Technical specifications (selected table)
Model | Tmax (°C) | Inner dimensions W x D x H (mm) | Volume (l) | Outer dimensions W x D x H (mm) | Max. loading weight of organic substances (g) | Max. evaporation rate of organic substances (g/min) | Connected load (kW) | Electrical connection | Weight (kg)
L 9/11 BO | 1100 | 230 x 240 x 170 | 9 | 415 x 575 x 750 | 75 | 1.0 | 7.0 | 3-phase | 60
L 24/11 BO | 1100 | 280 x 340 x 250 | 24 | 490 x 675 x 800 | 150 | 2.0 | 9.0 | 3-phase | 90
L 40/11 BO | 1100 | 320 x 490 x 250 | 40 | 530 x 825 x 800 | 200 | 2.1 | 11.7 | 3-phase | 110

Notes: Recommended working temperature for processes with longer dwell times is 1000 °C. External dimensions may vary with additional equipment; dimensions include exhaust tube (Ø 80 mm) where applicable. Connected load refers to the standard furnace and may increase with additional equipment.

Caractéristiques / spécifications techniques

• Series: L (examples: L 9/11 BO, L 24/11 BO, L 40/11 BO)
• Dual-mode capability: controlled ashing/incineration up to max. 600 °C and subsequent sintering up to max. 1100 °C
• Integrated thermal/catalytic post combustion and monitored exhaust air
• Preheated inlet air via bottom heating plate for improved temperature uniformity
• Three-side heating and ceramic heating plates with embedded heating wire
• Safety features: passive safety system, over-temperature limiter, mechanical door locking
• Controller: touch operation C550, plus NTLog Basic process data recording