Enamel abrasives can be divided into anti-sagging agents, fluxes, suspending agents, adhesives, pre-treatment neutralizers, etc. according to their functions. They can also improve the adhesion of the ground coat and prevent enamel cracking. Common enamel additives include clay, sodium nitrite, lithium carbonate, potassium carbonate, etc. Today we will introduce the functions and dosage of some common enamel additives. Enamel manufacturers recommend collection.

1. Antimony oxide, barium molybdate

Antimony oxide and barium molybdate are adhesives. The enamel is often used in grinding and adding the ground coat to enhance the adhesion of the enamel itself. If the adhesion of the enamel itself is strong, do not add it. At this stage, only antimony oxide is generally used, and barium molybdate is rarely used. Antimony oxide and barium molybdate are prone to crystallization in winter in the ground coat, resulting in pitting of the ground coat. In addition, the price of barium molybdate is high and the content is low, so it is basically eliminated, and the same effect can be achieved by using antimony oxide alone. The dosage is 0.5-2%. Generally 1% in the ground coat. Matte enamel 1-2%. One-time enamel is basically not used, and antimony affects human health. The national enamel standard antimony content should not exceed 0.7%.

2. Nickel oxide

Nickel oxide adhesive can improve the compactness of enamel, increase the adhesion of enamel, and prevent the R part from de-ceramization and cold burst defects. In matte enamels, it can improve the thermal and thermal extreme performance.

3. Potassium chlorate, sodium chlorate

Potassium chlorate and sodium chlorate are generally used in titanium cover coat and blue enamel to overcome the boiling point and chemical difference caused by organic impurities. Also enhances retention. The general dosage is 0.3-0.5. Excessive consistency is not easy to affect the porcelain surface during enamelling operation. Potassium chlorate and sodium are strong oxidants and are not used in red powder (to fade the red pigment).

4. Potassium carbonate, sodium; Potassium chloride, sodium; Fluorosilicon, sodium fluoborate, sodium aluminate, etc.

Potassium carbonate, sodium; potassium chloride, sodium; fluorosilicon, sodium fluoroborate, sodium aluminate, etc. all enhance the retention effect (or assist retention). The general dosage is between 0.2-0.5. Excessive dosage will affect the porcelain surface and luster. If the suspension of clay and bentonite can solve it, try to use less or not.