Porcelain enamel glaze for acid-resistant cast iron sanitary ware

Abstract

The invention discloses an enamel glaze for cast iron plumbing fittings with acid resistance, of which composition (wt.%) is: SiO2 40.0-60.0, Al2O3 0.1-5.0, B2O3 1.0-10.0, K2O 0.1-5.0, Na2O 6.0-17.0, Li2O 0.5-5.0, CaF2 1.5-7.0, Na2SiF6 2.0-6.0, Sb2O3 5.0-15.0, ZrO2 1.0-5.0, TiO2 1.0-10, PbO 0-8.0, CeO2 0.5-6.0, La2O3 0.3-5.0. The enamel glaze for cast iron plumbing fittings with acid resistance has a high chemical stability, a good processing property and a good opacifying capacity.

Description

technical field [0001] The invention relates to an enamel glaze, more specifically to an enamel glaze used for acid-resistant cast iron sanitary ware. Background technique [0002] Enamel glaze is a glass frit that is melted by a compound and then quenched with water. It is coated on a metal substrate and fired at a high temperature to become enamel. The main problems of current cast iron sanitary ware enamel are: 1. For cast iron sanitary ware enamel with good acid resistance and chemical stability, such as antimony oxide opalescent cast iron sanitary ware enamel, the firing temperature is relatively high and the process performance is poor , the fired enamel glaze layer is easy to crack and explode; 2. The cast iron sanitary ware enamel with better process performance, such as: zirconia milky white cast iron sanitary ware enamel, has poor chemical stability, is easy to stain, and is difficult to clean. Affect the use effect of enamel glaze products. The cast iron sanitar...

AI Technical Summary

Problems solved by technology

The main problems of current cast iron sanitary ware enamel are: 1. For cast iron sanitary ware enamel with good acid resistance and chemical stability, such as antimony oxide opalescent cast iron sanitary ware enamel, the firing temperature is relatively high and the process performance is poor , the fired enamel glaze layer is easy to crack and explode; 2. The cast iron sanitary ware enamel with better process performance, such as: zirconia milky white cast iron sanitary ware enamel, has poor chemical stability, is easy to stain, and is difficult to clean. Affect the use effect of enamel glaze products

The cast iron sanitary ware enamel glaze with antimony oxide and zirconia as opacifying agent has low opacity ability, and the enamel glaze layer needs to be coated thicker to achieve a better opacifying effect, which not only increases the opacity of the cast iron sanitary ware enamel glaze. The cost of cast iron sanitary ware enamel increases the probability of cracking and porcelain explosion, which reduces the yield of cast iron sanitary ware enamel products

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