Quartz glass Mohs hardness up to seven, with high temperature and expansion coefficient low, thermal shock resistance, chemical stability and electrical insulation performance is good and through ultraviolet and infrared. In addition to hydrofluoric acid and hot phosphoric acid, has good acid resistance to acid. Divided into transparent and opaque by two categories of transparency. The purity is divided into three types, high purity, general and doped. Quartz glass using high purity silica sand as raw materials, produced by traditional method is melt quenching method (material to be heated to the melting temperature, followed by rapid cooling to the glass solid phase); production of ultra high purity and UV transmittance of transparent glass to silicon gasification, oxidation silicon dioxide and heating dissolution process.

Today, we come to understand the difference between quartz glass and ordinary glass:

1, color: quartz glass is a single component of silica glass, so it must be colorless, ordinary glass generally have some color.

2, flame calcination: hydrogen oxygen flame and so on can be more than one thousand degrees of temperature calcination, look to soften the light, burning colorless is the quartz glass.

Quartz glass has a very low thermal expansion coefficient, high resistance to temperature, excellent chemical stability, excellent electrical insulation, low and stable ultrasonic delay performance, best through the UV spectral properties and through visible light and near infrared spectral properties, and has a higher than ordinary glass mechanical properties. Therefore, it is a sophisticated technology of modern space technology, atomic energy industry and national defense equipment, automation system, as well as one of the excellent material for semiconductor, metallurgy, chemical, electric light source, communication, light industry, building materials and other industry indispensable.