Taken Semi-conductor industry for an example, different kinds of quartzware have their special applications.
Large quartz glass plates can be used in the manufacture of flat panel displays (FPD).
Quartz original wafers are used to clean the tank in the wet cleaning process.
Quartz glass rods are generally used to make quartz boats, silicon wafer carriers and bases, etc.
Fused silica tubes can be widely used in batch-type firing furnaces as high-purity reaction chambers, gas/liquid inlets or conveying pipes.
High-purity fused silica rods can be used as guide fiber cores in fiber production.
Fused silica tubes have many uses in the production of optical fibers. It is one of the components of the optical fiber preform.
Regarding the rating of fused silica, a well-respected Quartz manufacturer suggests that several factors below should be taken into consideration:
Optical uniformity
Reflection and absorption
Bubble or impurity content
Refractive index and dispersion
Residual Stress
Fluorescence
Resistance to light-induced defects or radiation
To determine the residual stress grade in Quartzwares, a quartz polariscope can be a handy instrument.
Just like the photo above , it indicates that the blue area has stress.
By adjusting the process conditions, this situation can be improved.
