Forming lubricants
Condoroil presents a new formulation for galvanized coils passivation
Condoroil has reently developed a new formulation for the passivation of galvanized coils. The product has been named with the acronym CROMCOAT CR 646 and it differs from the current CR 644 since it has a double active components concentration. With the use of the formulation there are no technical changes in the application and/or performance but simply a reduction in the cost of use of the product resulting from lower specific purchasing and logistics costs.
CROMCOAT CR 646 is a product specifically formulated to give a HIGH YIELD, in the passivation of hot-dip galvanized surfaces (HDG). The YIELD HIGH of CROMCOAT CR 646 ensures a strong reduction of the concentrated product consumption compared to the trivalent chromium passivating normally in use. This facilitates the customer in having a reduced handling of tanks and consequently it reduces the space for storage. It is usually used with a roller applicator, chemical coater or spray and squeege. After passivation with CR 646 the galvanized coil must be dried in such a way that the surface reaches a PMT higher than 50°C.
CROMCOAT CR 646 is totally free of hexavalent chromium and fluorides. It allows to ensure a corrosion resistance that exceeds the highest demands of the market ensuring excellent wettability and uniformity of the support (WR <5% after 100 h NSS with 30 mg/m2 deposit). The trivalent chromium deposit to be applied varies between 15 and 40 mg/m2, depending on the treated substrate, the corrosion resistance that you want to give or that the customer requires. The product is also compatible with the majority of fluids used in the skinpassing phase.
