High-purity argon

　　High-purity argon:

　　Product Name: high purity argon high, purity, argon

　　Molecular formula: Ar

　　The purity of the product is less than or equal to 99.9999%: 99.999%;

　　Properties: argon is a colorless, odorless, monatomic inert gas with an atomic weight of 39.948 and a density of 1.78kg / m3 (air density is 1.29Kg / M 3). The weight of argon is 1.4 times that of air, which can form a stable air flow layer above the molten pool, and has good protection performance. In addition, less smoke is produced during the welding process to control the welding pool and arc. Argon is an inert gas at room temperature and other substances are not chemical reaction at high temperatures is not soluble in liquid metal, the non-ferrous metal welding when can demonstrate its superiority of argon is a single atomic gas under high temperature, argon directly dissociate into ions and electrons, so low energy consumption, stable arc combustion. At the same time, the positive ion volume and mass are larger, the impact force of the cathode is very strong, and it has a strong cathode fragmentation. The cooling effect of argon on arc is small, so when the arc is burning in argon, the heat loss is small and the stability is better. The effect of argon on the thermal contraction of arc is small, and the potential gradient and current density of argon arc are small, so the voltage of argon arc combustion is low, and the average 10V can be. Therefore, the arc is elongated when welding, and the voltage is not changed, and the arc is not easy to extinguish. This is very beneficial to manual argon arc welding. Argon is a by-product of oxygen production, because the boiling point of argon is between oxygen and nitrogen, and the difference is very small, so a certain amount of impurities remain in argon. According to China's GB484284 welding with argon (argon and test) standards, the purity should reach 99.99%. The specific technical requirements shown in the table below, if the impurity content in argon gas exceed the prescribed standards, in the welding process will not only affect the protection of molten metal, and extremely easy to weld porosity, slag and other defects, the welding quality is bad, and the loss amount also increased W.

　　Argon is mainly used in welding, stainless steel, smelting, chemical gas is also used in semiconductor manufacturing process phase deposition, thermal oxidation, crystal growth and epitaxy, diffusion, polycrystalline silicon, tungsten, ion implantation, load flow, sintering etc.. Used as carrier gas for ICP, gas chromatograph, standard gas, equilibrium gas, zero gas, etc..

　　Product use:

　　Stainless steel welding protective gas

　　Aluminium alloy welding protective gas

　　Welding protective gas of copper alloy

　　High purity argon is widely used in ICP spectrometers

　　High purity argon gas is widely used in energy-saving lamps, incandescent lamps and fluorescent lamp filling gases

　　High pure argon for ArF excimer laser gas

　　Ultra pure argon is used in the electronics industry