ã€China Aluminum Industry Network】 Al2O3 and SiO2 in Al-Si glass are high in content, have good chemical stability, electrical insulation, mechanical strength and low coefficient of thermal expansion, can be used to manufacture halogen bulbs, alkali-free Substrates, alkali-free glass fiber, and chemical pipelines, etc., are a kind of special industrial glass with large usage.
Alumino-silica glass is made of Li20-A1203-Si02 system, which is produced by calendaring method and has a thickness of 6-20?. It has high transparency, suitable for chemical tempering and other characteristics of the glass.
The main performance indicators transmittance: 91.8% (8?)
Refractive index: 1.5325 (yellow light)
Softening temperature: 600°C
Bending strength: 450-500Mpa
Expansion coefficient: 50X10-7/°C (20~100°C)
Thermal shock temperature: 250~300°C
The role is widely used: iron and steel, metallurgy, petrochemical, power plants, semiconductors, new light sources, precision optical instruments, aviation, military, instrumentation, printing and dyeing, boiler plant and other high-pressure mechanical equipment.
The glass color alkali-free aluminosilicate glass is generally colorless and transparent, and sometimes slightly yellowish.
Specifications High-pressure aluminum-silica glass products are a kind of special products. Generally, they can be processed into round sight glass such as circular sight glass, direction sight glass and long strip glass plate: Φ25mm~Φ200mm
Square sight glass: 20mm×20mm-150mm×250mm
Long strip glass: The common size is 250×34×17mm, 280×34×17mm, 320×34×17mm. This series of dimensions can be up to 400mm.
Due to the fact that the composition does not contain fluxes of alkali metal oxides, and the contents of A2O3 and SiO2 are high, the melting of alkali-free aluminosilicate glass is very difficult, and bubbles and streaks in the glass are not easily excluded. At present, the melting of the glass in China is carried out by continuous melting or single crucible production using platinum crucibles. This production method greatly increases the cost of the alkali-free aluminum-silica glass, and brings great difficulties to the formation of profiled (pipe, sheet, etc.) products, resulting in the application of alkali-free aluminum-silica glass receiving a relatively large limit.
In order to solve the above problems and meet the needs of the national economic development on the varieties and output of aluminum-silicon glass, the establishment of economies of scale - to provide production and reduce costs, has become the development trend of the application of glass.
To form economies of scale, we must first solve the problem of large-scale production of melting furnaces. The Bosh furnace is a new type of high temperature electric furnace that can be continuously or intermittently produced by Bussy of France in the 1980s. The melting furnace is a metal tank structure, and the lower furnace top temperature is kept with the incompletely melting batch materials, and the cold-leaching glass is used as the inner wall lining of the pool to eliminate the direct contact between the refractory material and the glass liquid, and the high temperature is solved. State of refractory erosion and glass contamination. The wave furnace uses electrode heating, the resistance heating zone is formed in the furnace, and the glass liquid flows back from the center high temperature zone to the outside. The central temperature can reach 2000°C, which fully meets the requirements of the refractory glass on the melting temperature. Many foreign manufacturers have used this melting furnace to melt alkali-free aluminum-silicate glass.
In addition to the need to solve the melting method, in order to form a large-scale production, the research of the glass-like process performance needs to be strengthened, and the melting temperature of the glass is reduced by the alkaline-earth metal box rare-earth metal oxide without introducing alkali metal oxides in minutes. , Adjust the material quality of the glass to reduce the technical requirements for the melting furnace, refractory materials and forming process when the glass is melted and formed, so as to improve the quality of glass produced on a large scale.
In this categories we will introduce our hydroponic grow light, horticulture grow light to you. Those samsung grow lights are for plant growth, offering intense illumination and special wavelengths to help plants grow faster and of higher quality. Additionally, the herb grow light offers improved energy efficiency and can provide more light for better nutrition absorption and photosynthesis. Moreover, all our lights are with dimmer, making it easier to adjust the light exposure during the plants' growth cycle for optimal results. Maksdep grow lights are a great option for those looking to cultivate the best plants possible.
Samsung Horticulture Led,Samsung Grow Light,Horticulture Grow Light,Herb Grow Light
GuangDong One World High-tech Co., Ltd. , https://www.maksdep.com