The thermal expansion coefficient of quartz glass is only 1/10 to 1/20 of ordinary glass. The purity of quartz glass has an effect on the expansion coefficient. The linear expansion coefficient of the general transparent quartz glass （0-100℃） is 5.4×10-7. Opaque quartz glass is 5.5×10-7. High purity synthetic quartz glass is 4.9×10-7（0-200℃）-5.0×10-7（5-35℃）. Temperature(℃) 100 [...]
1.Electric fused transparent quartz glass It is by the electric resistance heating element in the vacuum pressure furnace melting ordinary crystal, through artificial or mechanical pull made of various quartz tubes.These products can be processed into a variety of instruments.This kind of glass is the most commonly used in quartz glass.It can meet the needs [...]
Fused quartz is made of high pure silicon by high temperature melting and condensation.Its main component is SiO2, and also contains Fe3+,Al3+,K+,Na+,Ca2+,Li+ and other trace elements.The fused silica has the characteristics of wear resistance, high temperature resistance and so on.Silicon is also a precious semiconductor material, so it is widely used in the fields of electronics, [...]
Main varieties and uses of quartz glass Because the quartz glass has the excellent properties of light transmission and heat resistance from the ultraviolet to infrared area.It is widely used in electric light source such as ultra high pressure mercury lamp, mercury lamp, xenon lamp, UV lamp, halogen lamp, halogen lamp, [...]
The purity of quartz glass is mainly determined by the raw material.The purity of quartz glass produced by high purity raw materials such as SiCl4 can reach 99.9999%,which mainly used in the production of optical fiber.The purity of the quartz glass produced by the purified high quality natural quartz can reach 99.99%, which is used [...]
Quartz crucibles processing. Quartz test tubes sealing processing. Small size quartz crucibles processing. Quartz tube sealing. Bending quartz tubes. Quartz cigarette holders processing. Quartz products pickling pool for clearing quartz manufactured goods.
Performance SP-200 series Density 2.2 x 103kg/m3 Tensile strength 4.7 x 107Pa(n/m2) Compressive strength >1.1 x 109Pa Coefficient of thermal expansion (20 oC -300 oC) 5.5 x 10-7 cm/cm oC Thermal conductivity (20 oC) 1.4w/m oC Specific heat (20 oC) 660J/kg oC Softening Point 1683 oC Annealing point 1215 oC Remark： Thermal stability- The [...]
Silicon is a very rich element in the earth, which accounts for 25.8% of the earth's surface and second only to the oxygen element.Silicon resources refers to crystal, quartz vein quartz, quartz gravel, natural silica sand, etc..The main chemical composition is SIO2, which is rich in natural resources.According to data records, Brazil quartz resources are [...]
Donghai County as the "Crystal City" is famous in China and foreign countries.In this magical land is rich in reserves with quality of crystal and quartz resources.In recent years, in the promotion of the government, vigorously develop the silicon material products processing industry relying on a wealth of crystal and quartz resources.Donghai has become the [...]
