Q:What is the optimum ultrasonic frequency for ultrasonic cleaning of silicon wafers?

Ultrasonic cleaning machine of silicon wafer method and its device will be washing method is placed in the bottom horizontal grinding silicon wafer cleaning groove above the fence shaped quartz rod frame, in order to ensure the cleaning tank with deionized water height and the constant flow conditions, cleaning by ultrasonic vibrator is arranged on the bottom of the cleaning tank, the ultrasonic frequency is 40KHz. 80KHZ, every 5 minutes will turn a grinding silicon wafer surface grinding of silicon surface to be super super continuous wash wash no black smoke pollutants check.

Q:The working principle of quartz tube heater

Far infrared heating tube is used by the opal quartz glass tube, with special processing of resistance alloy material as a heating element, the opal quartz glass can be absorbed into the electric wire from radiation almost all of the visible light and near infrared light, and can make the far infrared radiation. But the current industrial infrared heating tube basically eliminates the milky white quartz tube, because of its relatively brittle material, it can not form a very long white heating tube. The milky white has an anti - light effect that stops its heat. Because of its high wall temperature, it is only suitable for near infrared heating.

Q:What can be used after battery recycling?

To recover a ton of waste dry battery as an example, after processing can be made: zinc manganese powder 140 kg, 440 kg, ammonium chloride 42 to 70 kg, 35 kg of manganese dioxide, graphite rod 70 kilograms, 4 kilograms of copper, iron bottom 17 kg.

Q:The problem of using crystal powder to make crystal

The crystal powder is made of high quality natural stone processing, high SiO2 content, low impurity content, can be used as optical fiber, quartz glass, quartz tube, quartz rod, quartz crucible materials, used in optical communication, semiconductor lighting industry, etc..

Q:Indoor cable heat shrinkable tube is fiber heat shrinkable tubes do

The heat shrinkable tube is composed of a transparent heat shrinkable tube, a hot melt pipe and a stainless steel needle (or ceramic rod / quartz rod).

Q:What is crystal powder?

Crystal powder has high content of SiO2 and low impurity content. It can be used as raw material of optical fiber, quartz glass, quartz tube, quartz rod and quartz crucible. It is used in optical communication, lighting and semiconductor industries.

Q:Characteristics and characteristics of ultra high temperature filter media

There are two kinds of Si3N4 fiber preparation method: one is to chlorosilane and six methyl two silicon nitrogen as the starting material, the first synthesis of hydrogenated stable polysilazane fibers by melt spinning, by melting and burning Si3N4 fibers; two with pyridine and two chloro silane as raw materials, the reaction of white the solid adducts under the protection of inert gas, and then get the whole solution of ammonia cyanide polysilazane in nitrogen, dissolved in organic solvents with hydrocarbon into the spinning solution made of fiber by dry spinning, and then in an inert gas or ammonia at the temperature of 1100-1200 DEG C for heat treatment and silicon nitride fiber.SiBN3C fiber is also produced by pre polymerization method. It is the newest ceramic fiber. The starting material is poly silicon nitrogen. It is obtained by melt spinning, cross-linking, melting and cracking.SiO2 is mainly through the same fiber and preparation of high silica glass fiber process, first made of glass material, then two times of melting, melt spinning with platinum crucible, a temperature of about 1150 DEG C, are further processed into fibers or fabrics and other products postprocessing with hot hydrochloric acid, get rid of B2O3 the composition of HNa2O, the sintering mass fraction of fiber in SiO2 reached 95%-100%, in addition, there are configured using SiO2 as raw material, high viscosity of the sol after spinning, obtained precursor fibers, and then heated to 1000 DEG C can be obtained with 99.999% purity quartz fiber. In addition, the quartz rod or the oxyhydrogen flame can be fused into coarse fiber, and then the continuous fiber with a diameter of 4-10 mu m can be drawn into a continuous fiber with a constant speed through an oxyhydrogen flame or a gas flame, and the content of SiO2 is 99.9%.

Q:Is quartz wool insulation material?

Purity 99.95%, density 2.2g/cm3. Tensile strength 7GPa; tensile modulus 70GPa. It has heat resistance, corrosion resistance and softness. High strength maintaining rate, stable size, thermal shock resistance, chemical stability, light transmission and electrical insulation under high temperature. Enhanced filament diameter 4~10 m, fiber diameter as quartz cotton varies depending on the use, about 0.7 to 10 mu m.

Q:The difference between quartz fiber and high silica fiber

The high silica fiber is made from alkali free fiber or high silica fiber by acid treatment. The fibers are removed from other fiber components except SiO2 and then sintered by hot sintering;

Q:Fiber core and cladding are not roundness, which is used to describe the parameters of optical fiber

Chemistry will know although I do not know what but in boiling water is 100 degrees. The node can only display the diamond crystal to out only after the most hard things that do not know can not stand the crystal modification in the volcano.