Quartz glass has a very low coefficient of thermal expansion, high temperature resistance, excellent chemical stability, excellent electrical insulation, low and stable ultrasonic delay performance, optimum UV transmission performance, and visible light transmission and near infrared spectroscopy. Performance, and has higher mechanical properties than ordinary glass. Therefore, it is one of the indispensable materials in the modern technology of space technology, atomic energy industry, national defense equipment, automation system, and semiconductor, metallurgy, chemical, electric light source, communication, light industry, building materials and other industries.
Quartz glass is quartz glass made of natural crystalline quartz (crystal or pure silica) or synthetic silane at high temperature. The molten product has excellent processing properties. In the extremely high viscosity range, the tubes and rods can be processed like ordinary glass, and high-speed mechanical tools can be used for grinding tools made of diamond or silicon carbide. Processing to make instruments and special products of various complex shapes. The performance of quartz glass depends mainly on its purity, followed by the process or thermal system. The presence of trace impurities will have a major impact on the performance of quartz glass; at the same time, due to the slight negligence of the process or thermal system, it will bring a variety of defects to the appearance quality, resulting in a large number of waste products.
Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure.Brass is similar to bronze, which is another alloy containing copper, with tin instead of zinc;Both bronze and brass may contain small amounts of other elements, including arsenic, lead, phosphorus, aluminum, manganese, and silicon.Brass has long been a popular decorative material due to its bright golden appearance, due to many characteristics such as low melting point, machinability (for hand tools and modern turning and milling machines), durability, electrical and thermal conductivity, it is also widely used in a variety of utensils.It is still widely used in applications where corrosion resistance and low friction are required. Our ball valves are made of brass, which is hard and durable with long service life and high stability.Brass is typically composed of 66% copper and 34% zinc, making it a good alternative to copper-based jewelry as it shows greater resistance to corrosion.Brass is often used in important situations where sparks do not collide, such as near fittings and tools where flammable or explosive materials are used.
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