Refractory Coating suits foundry application to 3,270°F.

Press Release Summary:

Pyro-Paint(TM) 634-ZO is zirconium oxide-filled, water-based, chemically resistant refractory coating used to extend life of ceramic, graphite, and metal crucibles and molds used in foundry applications. Resistant to wetting by range of metals, VOC-free solution provides erosion resistance and dries at room temperature within hours (within 2 hr @ 200°F). Dry films up to 5-10 mils can be produced without cracking, and cured films are more than 95% pure zirconium oxide.

Original Press Release:

New Pyro-Paint(TM) 634-ZO High Temp Refractory Coating Now Available

Valley Cottage, NY - April 3, 2007


Pyro-Paint(TM) 634-ZO, a new high temperature, zirconium oxide filled refractory coating developed by Aremco Products, Inc., is now used to coat and extend the life of ceramic, graphite and metal crucibles and molds use in foundry applications to 3270 °F (1800 °C).


Pyro-Paint(TM) 634-ZO is a high purity, zirconium oxide filled, water-based, chemically resistant coating system used to extend the life of ceramic, graphite and metal crucibles and molds used in the handling of molten metals in applications to 3270 °F (1800 °C). Pyro-Paint(TM) 634-ZO exhibits excellent adhesion to ceramics, graphites and metals and is resistant to wetting by a wide range of metals including Steels, Acidic Slags, Al, Pt, Rh, Zr, Nb, Mo, W, U, Ti, Pd and Ru. Pyro-Paint(TM) 634-ZO provides excellent durability and erosion resistance.

Pyro-Paint(TM) 634-ZO is formulated with a solids content of 54.0% by weight and 32.4% by volume to a viscosity range is 3,000 to 5,000 cps. It is typically applied by brush, roller or conventional spray equipment. Dry films up to 5-10 mils can be produced without cracking. Cured films are greater than 95% pure zirconium oxide.

Pyro-Paint(TM) 634-ZO is a simple to use, environmentally friendly, water-based formulation containing no volatile organic compounds. It dries at room temperature in several hours and cures fully within 2 hours at 200 °F.

Pyro-Paint(TM) 634-ZO is part of a line of refractory coatings based on ceramic fillers including aluminum oxide, alumino-silicate, boron nitride, carbon, graphite, and yttrium oxide. For complete details about Pyro-Paint(TM) 634-ZO and other related products, please contact Aremco's Technical Sales Department.

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