Factors Affecting The Thermal Stability Of High Temperature Alumina Ceramic Rollers

Time:2018/7/16 15:23:51 Click on:

In recent years, with the rapid development of the economy, people's living standards have been greatly improved, and the catering industry has also developed rapidly. Many foods need to be fried, fried, cooked, fried, stewed, boiled and other complex cooking methods to enrich the dining table of ordinary people, and people hope that traditional high temperature ceramic materials cookware can cook food under various heat sources and can directly The dining table is used for dining. Traditional ceramic cookware has been difficult to meet people's complex cooking requirements due to its resistance to thermal shock.

The amount of lithium mineral content of the high temperature alumina ceramic roller determines the expansion coefficient of the product, and the higher the content, the smaller the expansion coefficient. In the green body composition of the lithium heat-resistant ceramic cookware, since the lithium-containing mineral can form a low-expansion crystal phase β-spodumene solid solution with the molten quartz in the green body, the thermal stability of the product can be improved.

The higher the content of lithium minerals in high temperature alumina ceramic rollers, the better the thermal stability of the product. However, the content of lithium minerals should not be too high, because the price is relatively expensive, the content is too high, which will lead to an increase in product cost. At the same time, the range of firing of lithium-containing minerals is narrow, and the excessive content may lead to difficulty in firing the product, and its content is 40%. -55% is more suitable, and the fineness of the raw material has a significant influence on the thermal stability of the heat-resistant ceramic cookware. The fineness of the raw material not only affects the grain size of each crystal phase after firing, but also affects the formation and content of each crystal phase.

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