CNC Precision Machined Fused Silica Parts Custom Special Shape Quartz Structural Components

used silica sand is manufactured by melting high-purity natural quartz sand at ultra-high temperature above 1700°C, followed by crushing, sieving, cleaning and grading processes. It features amorphous silica structure, extremely low thermal expansion coefficient, outstanding thermal shock resistance and stable chemical inertness.Unlike ordinary crystalline quartz sand, fused silica sand will not undergo crystal phase transformation and volume expansion during repeated heating and cooling cycles, making it an ideal high-temperature raw material for precision investment casting, refractory materials, optical glass, ceramics and semiconductor industries.

Ultra-low thermal expansion rate, nearly zero volume change under sharp temperature fluctuation, effectively preventing mold cracking and finished product deformation.Excellent thermal shock resistance, resistant to repeated rapid heating and quenching without pulverization or spalling.High SiO₂ purity, low contents of Fe₂O₃, Al₂O₃ and other harmful impurities, low iron content avoids yellowing of glass and castings.Superior acid resistance, insoluble in most acids except hydrofluoric acid; stable chemical performance in high-temperature molten environment.Low thermal conductivity, good heat insulation effect, reduces energy consumption of high-temperature furnaces.Uniform particle shape, controllable grading, good fluidity and compactness when filling molds.