Atmospheric furnaces

We also propose a line of atmospheric furnaces using hot air ventilation adapted to different uses:

  • Atmospheric drying furnaces for small transformers or other applications
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  • Polymerisation furnaces making it possible to dry and cure varnishes (usually following impregnation) using a temperature curve ending at between 200 and 300°C depending on their composition. The control of this temperature rise, essential to keep the varnishes or resins intact over time (by avoiding thermal shocks which are sources of micro-cracks), is fully programmable and it can be started up using a timer to allow deferred cycles without the presence of operators.
  • Burner furnaces mainly designed for the thermal decomposition of varnishes before unwinding apresfor maintenance operations (common operation when refurbishing an electric motor). This operation is carried out by keeping the coil and its supports (motor body, etc.) at a temperature of between 300 and 400°C for 3 to 8 hours (depending on the type of insulation and the equipment size) in order to guarantee the perfect carbonisation of the varnish (pyrolysis type process). The resulting fumes then pass through a post-combustion box at 850°C to fully oxidise all polluting elements before their release. Heating temperature regulation is provided by a self-adapting system that optimises the cycle time using thermal regulation control during the varnish degassing phases.

All these furnaces can be optionally fitted with handling trolleys adapted to the loads of the elements to be handled. A rail track can also be laid on the ground or embedded (flush with the floor level) for better operator safety.

Similarly, the standard two-door system can be replaced by a single door or a sliding door (horizontal or vertical) depending on customer space constraints.

All our furnaces are perfectly heat insulated in order to reduce energy consumption and guarantee a wall temperature below 35°C.