Billet Caster’s supporting structures which are exposed to high temperature steam containing casting chemicals from the hot slab quenching operation has been causing extreme chemical corrosion of structures leading to severe metal loss. Repeated conventional painting methods are unable to yield satisfactory results in terms of protection.
After first round of copper slag blast cleaning to Sa 2 standard, all vertical and horizontal channels are scrubbed with detergent to remove the chemical contamination and further rinsed with fresh water jet to ensure contamination freeness of structures surface.
After surface got dry, carried out with second round of copper slag blasting to achieve Sa 2.5 i.e., near white metal finish with an average surface profile of 85+ microns to attain exceptional mechanical interlocking, polar-polar adhesion and chemical bonding of ProCoat advanced chemical and abrasion resistant polymer coating system.
With thorough hand pressure, initial wetting coat of ProCoat is applied followed by thickness build up coats with tynex bristle brush and synthetic roller over vertical and horizontal beams and allowed for full curing.
Carried out quality checks like wet film thickness during application, dry film thickness after curing, coating integrity check with Elcometer Gauges ensuring flawlessness coating application..