Enamel Mill Adjunct Formula Adjustment
The formula of enamel mill addition is also a production operating condition that has an important influence on enamel processing, especially the effect on the adhesion of enamel slurry. Because different forms of enamel slurry have different adhesion characteristics, when grinding different enamel slurrys, it is usually necessary to adjust the grinding additive formula.
Different grinding additives have an impact on the performance of enamel products. In the past, some customers have consulted that enamel products always have shrinkage. After firing, the iron billet is exposed. , so it is very important to understand the role of enamel mill admixtures and to be able to make adjustments to the product situation.
The clay in the mill admixture is generally considered to be a suspended solid, preventing the precipitation of the enamel particles, enhancing the dry film strength and contributing to the adhesion characteristics. The requirements for the use of clay are that the content of iron and mica in its composition should be low, and at the same time, it should have a stable viscosity. Generally speaking, if you want to increase the adhesion of enamel slurry, you can use high-adhesion clay in the grinding formula or increase the amount of clay added or replace clay with part of bentonite. In order to control the bubble structure and adhesion of the primer, high adhesion clays can be mixed with low adhesion clays in the grinding formula. Electrolytes, also known as "retention agents," belong to the class of salts. It can ionize and react with clay and fine enamel particles to change the adhesion.