Alluminium brazing furnaces
• Easy fluxant application
• Furnace atmosphere less critical then in vacuum brazing
• Simple plant layout
• Low maintenance costs
• No need to remove the fluxant from the pieces
• Initial investment is lower then in vaccum brazing
• Reducing assembly costs
• With the Nocolok process, scrap pieces are easily recycled by reprocessing them
Continuous plants for the production of such Aluminium heat exchangers as radiators,
heaters, condenser, evaporators and oil refrigerators
Nocolok is a brazing process employing non-corrosive fluxes and is nowadays
recognised as the best solution for Aluminium brazing.
The outer structure of the drying furnace is built in iron, the inner structure in AISI 304
The drying furnace is partioned in three zones: each zone is equipped with its own
burners and ventilators, temperature is independently monitored in each furnace zone
and the conveyor belt speed is controlled by an inverter.
The brazing furnace conists of six zones, of which three are heated with gas and three
are electrically heated, in order to achieve precise temperature control in the brazing
After brazing, the pieces are sent into the cooling zone, where the muffle plunges into
two water tanks, by which heat is removed.
The loading and unloading vestibules are equipped with glass fiber curtains that
prevent air from entering the muffle.
Nitrogen consuption is thus greatly reduced. Finally, the conveyor belt is driven by an
inverter, so as to achieve the desired speed variations.