초록 ▼

A porcelain enamel frit for sheet iron ground coat is disclosed, which contains neither fluorine nor fluorine compound, but has excellent firing property, and can be worked into sheet iron enamel having high gloss and adherence and low surface roughness. The frit consists of 100 parts of a main comp

A porcelain enamel frit for sheet iron ground coat is disclosed, which contains neither fluorine nor fluorine compound, but has excellent firing property, and can be worked into sheet iron enamel having high gloss and adherence and low surface roughness. The frit consists of 100 parts of a main component and 7-42 parts of an auxiliary component, said main component consisting of 30-73 parts of SiO2 or a mixture of SiO2 and at least one of TiO2, ZrO2 and SnO2, 8-45 parts of B2O3, and 8-41 parts of Na2O or a mixture of Na2O and at least one of Li2O and K2O, and said auxiliary component consisting of not more than 12 parts of Al2O3, 1-22 parts of at least one of CaO, Bao, ZnO, MgO and SrO, from more than 0 part to 7 parts of MoO3 or a mixture of MoO3 and at least one of V2O5, P2O5 and Sb2O3, and 0.5-10 parts of at least one of CoO, NiO, CuO, MnO2 and Fe2O3.

대표청구항 ▼

A fluorine or fluorine compound free porcelain enamel frit for sheet iron ground coat, consisting of, in parts by weight, 100 parts of a main component consisting of 30-73 parts of SiO2 or a mixture of SiO2 and at least one of TiO2, ZrO2 and SnO2, 8-45 parts of B2O3, and 8-41 parts of Na2O or a mixt

A fluorine or fluorine compound free porcelain enamel frit for sheet iron ground coat, consisting of, in parts by weight, 100 parts of a main component consisting of 30-73 parts of SiO2 or a mixture of SiO2 and at least one of TiO2, ZrO2 and SnO2, 8-45 parts of B2O3, and 8-41 parts of Na2O or a mixture of Na2O and at least one of Li2O and K2O (provided that, when the total amount of the mixture of Na2O and at least one of Li2O and K2O is assumed to be 100% by weight, the amount of Na2O is at least 45% by weight, that of Li2O is not more than 25% by weight and that of K2O is not more than 50% by weight), and 7-42 parts of an auxiliary component consisting of not more than 12 parts of Al2O3, 1-22 parts of at least one of CaO, BaO, ZnO, MgO and SrO (provided that the amount of each oxide is not more than 12 parts), from more than 0 part to 7 parts of MoO3 or a mixture of MoO3 and at least one of V2O5, P2O5 and Sb2O3, and 0.5-10 parts of at least one of CoO, NiO, CuO, MnO2 and Fe2O3.