Lead glass by - lead oxide, sodium carbonate plus a small amount of other materials in an oxidizing or neutral atmosphere melting glass mainly made of lead component is lead oxide, silicon dioxide, potassium oxide, which lead oxide content of 15-30. % higher degree of transparency, strong and refraction crystal gloss, hardness smaller, easy car grinding, carving and other decorative processing; but not acid.
Lead suitable for the manufacture of glass containers and exquisite tableware, crystal technology, optical instruments. Yu quality glass that glass "lead glass" .I quartz glass containing a chemical composition of 98% quartz. There are two kinds of opaque and transparent. Opaque quartz glass with pure quartz sand as raw material in the resistance furnace melting together, the finished product contains a large number of bubbles. transparent quartz glass with high silica content of the crystal as raw material, high-frequency vacuum melting furnace from lead glass hardness general Ta Mok's seven, low coefficient of expansion, excellent acid resistance. capability except hydrofluoric acid erosion hot phosphoric everything outside, electrical insulation, chemical and thermal stability, the maximum temperature difference between the heat-resistant up to 1000 - around. useful for making high temperature, erosion resistant bottles, cans. altar etc. po silicate glass containing a boron oxide glass multipurpose by boron oxide. silica. oxidation mixing aluminum, or the like, wherein the boron oxide content of at least 5% or more has good heat resistance and impact resistance, resistance to most chemicals.
The use of lead glass: lead glass is mainly used for the manufacture of optical glass, vacuum glass, low-temperature sealing glass, radiation protection glass, lead crystal glass, flint-based optical glass, low-melting glass, glass delay line, high refraction glass beads utensils and art glass.