Zinc alloy for galvanizing Umicore TECHNIGALVA®, AX, GALFAN® ...
Continuous galvanising
In this continuous galvanising process, sheet steel is coated with a thin zinc layer by drawing the steel continuously through a bath with a liquid zinc alloy. For this process specially produced zinc alloys with aluminium are generally used, called CGG zinc alloys, with the aluminium content typically varying from 0.1% to 1%. Some processes also use zinc alloys with a higher aluminium content ( such as "Galfan") or a mix of aluminium and lead.
Nyrstar produces zinc/aluminium alloys according to specifications that are developed in close consultation with our customer. These alloys are all produced from Special High Grade zinc (SHG) and are available in jumbos in the range of 1000 kg to 4000 kg and slabs of 25 kg.
The melting and casting process at Nyrstar is developed to produce homogeneous alloys that are cast in jumbos that are free from shrinkage cavities and zinc oxides. This guarantees our customer a product that is suitable for the optimal performance of the galvanising process.
