THE FINISHING PROCESS
Our highly trained technical team operate from an advanced production facility to ensure that the latest galvanizing standards are met, and that our customers enjoy a high quality, resilient finish. Galvanizing can result in a 40-year lifespan and significantly enhanced resistance to corrosion (dependent on environment or industrial factors) – benefits too good to pass up on, if you ask us.
STEP 2: Flux
The steel – which we refer to as “the work” – is now immersed in a heated preflux. This process aids the wetting of the work and flow of zinc, which is critical to achieving a smooth finish later down the line. The flux is heated to reduce thermal shock and improve immersion times.
STEP 3: Zinc Bath
The work is then submerged into a bath of molten zinc, which is heated to 445 degrees. Here, the zinc becomes an integral part of the steel.
STEP 5: Fettle
To achieve a smooth surface for powder coating, we undertake a process called “fettling”. This eradicates rough edges and uneven surfaces to prepare the work for a smooth powder coated finish.
STEP 6: Powder coating pretreatment
Now, we take specific preparatory steps for powder coating. These include passing the work through several intensive treatments.
STEP 7: Spray booth
Using electrostatic charge, one of 180 European RAL colours powders is sprayed onto the surface of the work. Our customers can choose the colour they’d like. An even and consistent finish is achieved by applying the perfect amount of pressure and powder, tried and tested from experience. Barkers is keen to fly the eco flag wherever we can and are conscious of our environmental impact. So, you won’t find any worrying solvents in our powders and recycle up to 80% of unused powder by passing it back through the system to reduce waste, too.