Belt Furnaces Type FN

These furnaces are particularly suited for:
• Chain welding
• Metal finding welding
• Sheet and tube welding.
• Enamelling.
Models FN70/A-A1, FN100/A-A1, FN140/A-B have two heating zones. The electrical resistances are made of wire capable of resisting temperatures beyond 1200°C. The muffle is built in refractory steel. The patented steel cooling chamber is designed to prevent condensate from dripping on to the items to be annealed or soldered. This chamber is cooled by a closed cycle cooling unit consisting of : stainless steel tank for decalcified water, a circulation pump and a water-water heat exchanger that needs to be connected to a water supply. This cooling unit is fitted on all models except the FN50/A-A1-A2.
The furnaces are fitted with time switches to automatically turn them on and off. When the temperature of the furnace goes above 350°C, the belt automatically starts up and the cooling water begins to circulate. When the temperature falls below 350°C, the belt and the cooling water automatically stop. Static power modules are used in place of traditional remote control switches. Propane , methane or butane can be used as protective gas for the two burners on the inlet and outlet of the furnaces.
The protective mixture (H2 + N2) can be used from gas tanks or generated by an ammonia cracker.

TECHNICAL DATA FN50/A FN50/A1
Power Supply Three-Phase Three-Phase
Power 5 kW 5 kW
Max. Working Temperature 1050 °C 1050 °C
Belt Mesh Sheet
Belt Width 50 mm 50 mm
Total Length of Heated Zones 570 mm 570 mm
Max Belt Speed 4.5 m/min 4.5 m/min
Thickness of Refractory Steel Muffle 3 mm 3 mm
Int. Useful Dimensions of the Muffle 50×28 mm 50×28 mm
Water Consumption 6 l/min 6 l/min
Gas Consumption 100-200 l/h 100-200 l/h
Weight 350 kg 350 kg
Overall Dimensions (mm) 750x2400x950 750x2400x950

TECHNICAL DATA FN70/B FN70/B1 FN70B1/2
Power Supply Three-Phase Three-Phase Three-Phase
Power 11 kW 11 kW 11 + 11 kW
Max. Working Temperature 1050 °C 1050 °C 1050 °C
Belt Width 70 mm 70 mm 70 + 70 mm
Total Length of Heated Zones 730 mm 730 mm 730 + 730mm
Max Belt Speed 4.5 m/min 4.5 m/min 4.5 m/min
Thickness of Refractory Steel Muffle 4 mm 4 mm 4 mm
Int. Useful Dimensions of the Muffle 70×46 mm 70×46 mm 70×46 + 70×46 mm
Water Consumption 8 l/min 8 l/min 16 l/min
Gas Consumption 350 l/h 350 l/h 700 l/h
Weight 800 kg 800 kg 1100 kg
Overall Dimensions (mm) 940x4250x1100 940x4250x1100 1240x4250x1100

TECHNICAL DATA FN70/A-A1 FN100/A-A1
Power Supply Three-Phase Three-Phase
Power 18 kW 18 kW
Max. Working Temperature 1050 °C 1050 °C
Belt Width 70 mm 100 mm
Total Length of Heated Zones 1160 mm 1160 mm
Max Belt Speed 4.5 m/min 4.5 m/min
Thickness of Refractory Steel Muffle 4 mm 4 mm
Int. Useful Dimensions of the Muffle 70×46 mm 100×46 mm
Water Consumption 8 l/min 8 l/min
Gas Consumption 350 l/h 350 l/h
Weight 900 kg 900 kg
Overall Dimensions (mm) 940x5500x1100 940x5500x1100

TECHNICAL DATA FN70A1/2
Power Supply Three-Phase
Power 18 + 18 kW
Max. Working Temperature 1050 °C
Belt Width 70 + 70 mm
Total Length of Heated Zones 1160 +1160 mm
Max Belt Speed 4.5 m/min
Thickness of Refractory Steel Muffle 4 mm
Int. Useful Dimensions of the Muffle 70×46 + 70×46 mm
Water Consumption 16 l/min
Gas Consumption 1500 l/h
Weight 1200 kg
Overall Dimensions (mm) 1350x5500x1100

TECHNICAL DATA FN140/C FN250/A
Power Supply Three-Phase Three-Phase
Power 21 kW 24 kW
Max. Working Temperature 1050 °C 1050 °C
Belt Mesh Mesh
Belt Width 140 mm 250 mm
Total Length of Heated Zones 2235 mm 2285 mm
Max Belt Speed 1.56 m/min 1.56 m/min
Thickness of Refractory Steel Muffle 4 mm 4 mm
Int. Useful Dimensions of the Muffle 165×75 mm 265×75 mm
Water Consumption 10 l/min 14 l/min
Gas Consumption 600 l/h 600 l/h
H2+N2 Consumption 600 l/h 600 l/h
Weight 1200 kg 3000 kg
Overall Dimensions (mm) 860x8000x1400 1050x9300x1670


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