ENAMEL Russian patent published in 2008 - IPC C03C8/04 

FIELD: ferrous metallurgy industry; other industries; production of the enamels for deposition on the iron and steel articles.

SUBSTANCE: the invention is pertaining to the composition of the enamels used for their deposition on the articles made out of the cast iron and the steel. The technical result of the invention consists in the increased strength of the enamel against action of the impact. The enamel composition contains (in mass %): SiO₂ - 45.0-50.0; СаО - 12.0-16.0; Na₂O - 5.0-7.0; В₂О₃ - 5.0-7.0; Al₂О₃ - 3.0-4.0; MgO - 5.0-7.0; Fe₂O₃ - 3.0-4.0; NiO - 20-3.0; TiO₂ - 8.0-10.0; ZnO - 3.0-5.0.

EFFECT: the invention ensures the increased strength of the enamel against action of the impact.

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