Year1
- 规格：
- 40L
- 纯度：
- 99.999%
- 包装：
- 钢瓶
Product name:
High purity argon gas, liquid argon
Other names:
Liquid argon gas, high purity argon gas
Molecular formula:
r
.:
.:
Product purity:
.% or .%
Packing instructions:
Carbon cylinder or other customer-specified packaging
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< =>Product specifications and technical indicators
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< Pure Argon
< High Purity Argon
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< =>Product Description
Argon is a colorless, odorless, monatomic inert gas with an atomic weight of. , the density is. / (The density of air is.). Argon gas is as heavy as air. times, a stable airflow layer can be formed above the molten pool, which has good protective performance. In addition, less smoke is generated during the welding process, making it easier to control the welding pool and arc. Argon is an inert gas that does not react chemically with other substances at room temperature and is not dissolved in liquid metal at high temperatures. Therefore, it can show its superiority when welding non-ferrous metals. Argon is a monatomic gas. , at high temperatures, argon gas directly dissociates into positive ions and electrons, so energy loss is low and arc combustion is stable. At the same time, the decomposed positive ions have a large volume and mass, have a strong impact on the cathode, and have a strong cathode crushing effect. Argon gas has a small cooling effect on the arc, so when the arc burns in argon gas, the heat loss is small and the stability is relatively good. The thermal shrinkage effect of argon gas on the arc is small. In addition, the potential gradient and current density of the argon arc are not large, so the voltage required to maintain the argon arc combustion is low and generally sufficient. Therefore, the arc is elongated during welding, its voltage does not change much, and the arc is not easy to extinguish. This is very beneficial for 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, a certain amount of impurities often remain in argon. The purity of argon gas used for welding should meet the standard requirements of my country (argon gas and its inspection methods). %. The specific technical requirements are shown in the table below. If the impurity content in the argon gas exceeds the specified standard, it will not only affect the protection of the molten metal during the welding process, but also easily cause defects such as pores and slag inclusions in the weld, which will deteriorate the quality of the welded joint. , and the burning loss of the tungsten electrode also increases.
Argon is mainly used in welding, stainless steel manufacturing, and smelting. It is also used in chemical vapor deposition, crystal growth, thermal oxidation, epitaxy, diffusion, polysilicon, tungstenization, ion implantation, and current carrying in semiconductor manufacturing processes. , sintering, etc. Used as carrier gas, standard gas, balance gas, zero point gas, etc. for C, gas chromatograph and other instruments.
< =>Applications of argon
Stainless steel welding shielding gas
Aluminum alloy welding shielding gas
Copper alloy welding shielding gas
High purity argon is widely used in C Spectrometer
High-purity argon gas
Widely used as filling gas for energy-saving lamps, incandescent lamps, and fluorescent lamps
High-purity argon gas is used for r excimer laser gas
For ultra-pure argon gas Manufactured in the electronics industry
< =>Notes
The argon gas pipeline should be sealed and airtight. Provide good natural ventilation. Operators must undergo special training and strictly abide by operating procedures. Prevent gas leakage into workplace air. When transporting, load and unload with care to prevent damage to the cylinder and accessories. Equipped with leakage emergency treatment equipment. Argon is a colorless, odorless, non-flammable, high-pressure gas stored in cylinders. When its content increases and the oxygen content falls below .%, it may cause suffocation. Equipped with self-priming breathing mask. Bottled gas products are high-pressure filled gases and should be decompressed before use. The packaged gas cylinders have a service life on them. All expired gas cylinders must be sent to a department for safety inspection before they can continue to be used. When exhaust gas is used in each bottle of gas, the residual pressure in the bottle should be kept at ., and the minimum residual pressure should not be lower than . The bottle valve should be closed to ensure gas quality and safety. Bottled gas products should be classified and stacked during transportation, storage and use. It is strictly forbidden to stack combustible gases and combustion-supporting gases together. They are not allowed to be near open flames or heat sources. They should be kept away from fire, oil and wax, exposed to the sun, and thrown away again. , Do not hit, it is strictly prohibited to cause arc ignition or arcing on the cylinder, and it is strictly prohibited to load and unload brutally.
< =>Physical and chemical properties of argon
Molecular weight: .
Melting point: .℃
Boiling point (.): .℃
Liquid density (.,.) : /
Gas density (.,.):/
Relative density (gas, ℃,.):.
Specific volume (.℃,.):./
Gas Liquid volume ratio (℃,):/
Critical temperature: .℃
Critical pressure:
Critical density: ./
Heat of fusion (.℃,.) /
Heat of vaporization (.℃,.): ./
Specific heat capacity (,): C=/(&)
(,): C=/(&)
Specific heat ratio ( Gas,.℃,.):.
Vapor pressure (.℃):
(.℃):
(.℃):
Viscosity (,):
Surface tension: /
Thermal conductivity (,): /(&)
Refractive index (gas, ℃,.,.?): .
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