Helium

Category: Industrial Gases

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Product Description

- Commodity name: Helium
- Commodity ID: 1442520547802632192
Helium is widely used in military industry, scientific research, petrochemicals, refrigeration, medical care, semiconductors, pipeline leak detection, superconducting experiments, metal manufacturing, deep-sea diving, high-precision welding, and the production of optoelectronic devices.

Low-temperature cold source : Using liquid helium -268.9 With its low boiling point of ℃, liquid helium can be used for ultra-low-temperature cooling. Ultra-low-temperature cooling technology finds wide applications in fields such as superconductivity; superconducting materials require operation at low temperatures ( 100K (Left and right) superconducting properties can only be demonstrated under such conditions; in most cases, only liquid helium can relatively easily achieve these extremely low temperatures. Superconducting technology finds extensive applications in maglev trains in the transportation sector and in nuclear magnetic resonance imaging equipment in the medical field.

Balloon inflation : Since the density of helium is much lower than that of air (the density of air is... 1.29kg/m3 , the density of helium is 0.1786kg/m3 ), and it is chemically extremely inert and much safer than hydrogen (hydrogen can burn in air and may cause explosions). Helium is often used as the filling gas in airships or advertising balloons.

Inspection and analysis In instrumental analysis, the superconducting magnets used in nuclear magnetic resonance (NMR) spectrometers require cooling with liquid helium. In gas chromatography, helium is often used as a carrier gas due to its excellent permeability and non-flammability. Helium is also employed in vacuum leak detection, such as in helium mass spectrometry leak detectors.

Protective gas Due to helium's chemically inert properties, it is often used as a shielding gas in the welding of metals such as magnesium, zirconium, aluminum, and titanium.

Other aspects Helium can be used as a pressurizing gas in high-vacuum devices and nuclear reactors, as well as in rockets and spacecraft to deliver liquid propellants such as liquid hydrogen and liquid oxygen. Helium is also employed as a cleaning agent in nuclear reactors and as the filling gas for gas thermometers in breathing mixtures used in marine exploration.