Cover Coat Enamel Frit for BBQ Oven, Grill and Enamel Bathtub

Enamel cover frit is coated on the surface of products.

According to their characteristics, they can be divided into acid resistant frit, alkali resistant frit, wear-resistant frit, microcrystalline frit, luminescent frit, high-temperature resistant frit, and insulating frit.

According to the types of emulsifiers in cover frit, they are mainly divided into titanium white cover frit and antimony white cover frit. The titanium dioxide in the former porcelain frit crystallizes again during firing, giving the frit super milky white properties. Therefore, the porcelain layer is thin and material saving, making it the most widely used cover frit for daily enamel; The milky effect of antimony oxide in the latter porcelain frit is secondary to that of titanium dioxide, so the antimony surface porcelain layer is thick and commonly used in cast iron bathtub glaze or other enamel products for non food use.

Chemical characteristics of frit: There are acid resistant and alkali resistant frits. The acid resistant frit contains more than 65% silicon dioxide and is mainly used for coating chemical machinery enamel products. A large amount of zirconia is often introduced into the composition of alkali resistant frits, and chromium oxide and titanium dioxide can also be introduced to improve alkali resistance.