Hi Chemi,

Thank you for saying "Hi". Hope all is well with you & family.

For high-performance brazed coils - whether aluminium, or copper, we use the same type of CAB furnace, with similar operating temperatures. In the early days of this type of brazing, we would even use an aluminium production furnace, adjust the settings, and pass trays of aluminium-friendly flux through afterwards, to move back to aluminium production.

With the brazing furnace system the same for both, what we are left with the technical challenges of the joining alloy between tube, fins, fittings.

The key to joining alloy selection, is to manage the galvanic charges, to protect the tube from corrosion in wet conditions.