Explanation

kaolin feldspar quartze system porcelain with feldspar as a training aid. Its characteristics are: firstly, its firing temperature range is relatively wide, and the variation range is also wide depending on the component ratio and process factors. This type of porcelain can be fired within the temperature range of 1150 ° C to 1450 ° C. Generally speaking, those fired above 1350 ° C are referred to as high-temperature porcelain, while those below 1350 ° C are referred to as low-temperature porcelain. In China, the firing temperature of feldspathic porcelain is generally between 1250 ° C and 1350 ° C. A typical formula includes 50% kaolin, 25% feldspar and 25% quartze. The microstructure of the porcelain consists of crystal phase, glass phase and closed pores. The crystal phase plays the role of skeleton in the porcelain body, while the glass phase fills between the skeletons, playing a binding role. The water absorption of this kind of porcelain is close to zero, and the bending strength of unglazed test strips is usually between 70 and 100 MPa. This kind of porcelain is mainly used to make daily porcelain, electric porcelain, chemical porcelain and other products.

Classification