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Pyro-Paint™ 634-BN is a single part, odorless, water-dispersible, boron nitride filled, high temperature coating, formulated to resist molten metals, glasses, plastics and salts in applications to 1560 °F (850 ºC). It is particularly effective in resisting non-ferrous metals such as molten aluminum and magnesium.
Pyro-Paint™ 634-BN is most frequently applied to metal and refractory foundry structures such as crucibles, ladles and troughs. It provides a highly lubricious and chemically and erosion resistant interface between a molten material and the underlying metal or refractory structure, resulting in increased system life.
Pyro-Paint™ 634-BN is a simple to use, environmentally friendly, water-based formulation containing no volatile organic compounds. It is formulated with a solids content of 38.6% by weight, resulting in a dry film of greater than 95% boron nitride and a coverage rate of 345 ft²/gal assuming a 1mil dry film thickness. It is easy to apply with a brush, roller or conventional spray equipment; it dries at room temperature in 1-2 hours and cures fully in 1-2 hours at 200 °F. Cleanup of uncured material is accomplished easily with warm water and soap.
Pyro-Painttm 634-BN is part of a line of refractory coatings based on ceramic fillers including alumino-silicate, carbon, graphite, silicon carbide, yttrium oxide, and zirconium oxide. For complete details about the Pyro-Paint™ series of products, please contact Aremco’s Technical Sales Department.