Quartz ceramic products have the advantages of high purity, strong temperature resistance, large size and high precision, good insulation, energy saving, and stable quality, and their applications are becoming increasingly widespread. In fact, we have mentioned many excellent features of this product before. This time, we mainly explain the deficiencies that occur during melting and the reasons for their formation. We will explain through the following content:
1. Attachments
Most of it is due to the deposition of high-temperature volatile SiO2 on the electrical surface, which then falls into the crucible.
2. Bubble
Mainly from raw materials of quartz ceramic products, organic impurities that fall in, silicon carbide and graphite generated by silicon carbon reaction are also reasons for the formation of bubbles, which need to be carefully analyzed and improved.

　3. Black dots
Mainly from raw materials, followed by graphite. Impurities falling into equipment and surrounding environment are sometimes important, and electrical detachment and slag shedding often occur when the current is too high.
4. Loose contact of electrical wires
Resulting in the inability to input current.
5. Size mismatch
The main reasons are that the mold and forming rod sizes of quartz ceramic products do not match, and the control of melting time and electrical lifting is not appropriate.
In short, under reasonable process parameters, the occurrence of missing quartz ceramic products is mainly due to four factors: raw materials, environment, and operation. The testing work is a very important link, and product testing is developing towards on-site testing.