The main components of quartz glass-cleaning of quartz glass

The main components of quartz glass

        Quartz glass is a kind of special glass that contains only a single component of silica. Due to different types, processes and raw materials, foreign countries are often called silicate glass, quartz glass, fused silica, fused silica, synthetic fused silica, and transparent, translucent, and opaque quartz without a clear concept. In my country, it is collectively referred to as quartz glass, which is mostly classified according to the process method, use and appearance, such as fused transparent quartz glass, continuous fused quartz glass, gas-smelted transparent quartz glass, synthetic quartz glass, opaque quartz glass, optical quartz glass, and semiconductor quartz glass. , Quartz glass for electric light source, etc. People are accustomed to using a simple word such as "quartz" to name this material, which is inappropriate, because "quartz" is a general term for the crystalline state of silica, which is similar to vitreous silica in physicochemical properties. There is a difference.

        Quartz glass is made of natural crystalline quartz (crystal or pure silica) or synthetic silane by melting at high temperature. The melted product has processability, in the viscosity range, tubes and rods can be thermally processed like ordinary glass fine work, and can also be machined at high speed with abrasives made of diamond or silicon carbide to make complex. Shaped instruments and specialty products. The performance of quartz glass mainly depends on its purity, followed by the process or thermal system. The existence of impurities will have a significant impact on the performance of quartz glass; at the same time, due to the slight negligence of the technological process or thermal system, it will bring various defects to the appearance quality, resulting in a large number of waste products.

        Cleaning and maintenance of quartz glass

        Quartz glass is an acidic material. Except for hydrofluoric acid and hot phosphoric acid, it is inert to other acids and is an acid-resistant material. Alkali and salt are also slightly corrosive to quartz glass at room temperature, so quartz glass is not used in these reagents.

        Transparent quartz glass is chemically more stable than opaque quartz glass because the latter has an increased surface area exposed to the corrosive solution due to the presence of air bubbles. Quartz glass does not absorb moisture and does not weather. Quartz glass is resistant to alkali and alkaline earth compounds, and slight traces of these compounds can also cause quartz glass to crystallize at high temperatures.

        1. Quartz glass products are valuable materials and need to be handled with care;

        2. Quartz glass that needs to be used at high temperature should be wiped clean before use. It can be soaked with 10% hydrofluoric acid or lotion, then cleaned with high-purity water or treated with alcohol. Thin-line gloves should be worn during operation, and direct contact with quartz glass is not allowed;

        3. Quartz glass has a working temperature, which should not be exceeded during use, otherwise it will crystallize or soften and deform;

        4. Although the quartz glass material has thermal stability, it can withstand severe temperature changes. However, in actual use, due to the difference in residual strain and product shape, there are differences in thermal stability, and attention should be paid during use;

        5. Quartz glass products are allowed to be used continuously at high temperature, which affects the life and temperature resistance of quartz glass. On the contrary, the intermittent use of quartz glass products at high temperature has a limited number of uses;

        6. Quartz glass is an acidic material. When used at high temperature, it is in contact with alkaline substances (such as water glass, asbestos, potassium-sodium compounds, etc.) to resist crystallization.