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

The bottom wall of the frame is made of fence like quartz bars, and the whole frame is supported by the support feet in the cleaning tank. The present invention changed the vertical level of ultra ultra washing after washing solution, because the distance of ultrasonic ranging from silicon source pollutants easily accumulate in the surface of a silicon wafer is caused by a local difficult clean problem and eliminate the made of PTFE material bearing silicon adsorption and blocking software basket will transfer the ultrasonic source, resulting in local area of silicon wafer surface cleaning the phenomenon is not clean.

Q:The working principle of quartz tube heater

Carbon fiber is a fibrous carbon material. It is a kind of strength than steel and density than aluminum ratio, stainless steel is resistant to corrosion, high temperature resistance, heat resistant steel and as conductive than copper like, new materials have many valuable electrical, thermal and mechanical properties. The carbon fiber heater relies on a carbon fiber with good thermal conductivity as a heat conductor of both ends of the heater, which can play a fast heating effect, and the carbon heater can also be used in the bathroom due to the insulating property of the carbon. Carbon fiber quartz electric heater is a new kind of electric heating product. It uses carbon fiber as heating material. It is mainly used in air, water heating, industry, agriculture and other aspects. The quartz heater energy-saving and uniform heating, electric transmission speed. Long service life up to 6000 hours, care of carbon fiber infrared radiation of 8-14 microns, reduce the damage to the human body infrared material, our products are powerful, can accelerate the body's blood circulation, promote The new supersedes the old., improve immune function, there are not other heaters compared the advantage.

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 transparent outer layer facilitates the detection of optical fiber joint connection is correct, the fiber can safe and easy to assemble, the contraction can keep the optical transmission characteristics of optical fiber, optical fiber joint to provide strength and protection, to avoid damage to the fiber during the installation process.

Q:What is crystal powder?

The crystal powder is Japanese jelly powder, crystal powder mainly composed of carrageenan, sodium alginate, agar gel and pectin gel plant compound and into, can slowly dissolve in cold water, soluble in hot water. Cold noodle powder (crystal powder) the amount of 0.8% of total food freezing and cold noodle ~ 1.0%.

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?

Method: (1) a quartz rod or tube oxyhydrogen flame melt drawing, then the oxyhydrogen blowpipe blowing, made of a diameter of 0.7 ~ 1 m quartz wool; (2) the flame melting quartz with high speed airflow form short fiber and mat; (3) the quartz wires or rods at a constant speed the oxyhydrogen flame or gas flame, high speed after softening into a longwire.

Q:What is an optical fiber heat shrinkable tube used for?

The transparent outer layer is convenient for detecting whether the joint of the optical fiber is connected properly, and the optical fiber can be assembled simply and safely. After contraction, the optical transmission property of the optical fiber can be maintained, and the strength and the protection of the optical fiber joint can be provided. To avoid damage to the optical fiber during installation.

Q:The difference between quartz fiber and high silica fiber

The quartz fiber is a high-purity silicon dioxide material, which is fused and drawn into a quartz rod and then drawn by two heating;

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

The crystal powder is Japanese jelly powder, crystal powder mainly composed of carrageenan, sodium alginate, agar gel and pectin gel plant compound and into, can slowly dissolve in cold water, soluble in hot water.