Porcelain enamel is a glass of a particular chemical composition and physical nature determined for the surface protection of metal.
Enamel cover coat frit is a form of glass bonded to metal on a molecular level at high temperature.
This results in a typical and unique composite material of glass and metal, which combines the positive qualities of both materials.
Cover coat have good opacity and gloss with clean and fine surface, but they can’t be directly coated on the body metal, they require the matched ground cover coat frits. The firing temperature of cover coat frit is lower than that of ground cover coat frit.
This article comes from sinopigment edit released