The industry with the largest consumption of high-purity helium gas in China

Firstly, let's take a look at the applications of high-purity helium gas in various industries

Helium, high-purity helium

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aerospace

High purity helium is widely used in the entire process of aerospace and aircraft manufacturing, from manufacturing to flight. Space flight operations use high-purity helium to purify hydrogen systems, while ground and flight fluid systems use it as a booster. In addition, high-purity helium gas is also used as a lift source for meteorological and other observation balloons.

Automobiles and transportation equipment

High purity helium gas is used for testing important automotive components such as radiators, heat exchangers, air conditioning components, fuel tanks, and torque converters to ensure compliance with quality specifications. In addition, high-purity helium gas can also be used in conjunction with argon gas, and is increasingly used for inflating safety airbags.

diving

When diving, the combination of oxygen and high-purity helium can effectively eliminate nitrogen anesthesia, reduce deep breathing resistance, and shorten decompression pause time. Helium oxygen mixture can allow divers to stay deeper in the water for longer periods of time. The deeper the dive, the higher the concentration of high-purity helium gas, allowing divers to dive deeper and achieve longer welding times.

electronic

High purity helium gas plays an important role in the manufacturing of semiconductors, liquid crystal panels, and fiber optic cables. It can achieve rapid cooling of components, thereby improving productivity. It can also control the heat transfer rate to improve production efficiency and reduce defects; In addition, high-purity helium can also serve as a carrier gas during the production process.

Welding and metal processing

The inertness of high-purity helium gas under arc temperature conditions makes it an ideal gas for welding high thermal conductivity materials such as aluminum, stainless steel, copper, and magnesium alloys. It can also be used as a quenching gas and furnace gas in heat treatment processes to improve the durability and quality of parts.

healthcare

As an ideal cryogenic gas for magnetic resonance and nuclear magnetic resonance superconducting magnets, high-purity helium can achieve a cryogenic temperature of -451 degrees Fahrenheit, effectively obtaining high-resolution images of internal organs and tissues.

Most people know about the MRI machines in hospitals, which can capture three-dimensional images of the human body for doctors to diagnose. Liquid helium has two uses: one is to cool the internal magnet with liquid helium during the manufacturing process until it approaches absolute zero for product testing, and then send it to the hospital as a finished product; The second requirement is that the hospital's magnetic resonance imaging machine must maintain the temperature of the magnet to keep the machine running continuously, and it needs to be filled with liquid helium to meet this requirement. Older magnets require 2000L of liquid helium to be filled annually, while new magnets also require 500L of liquid helium to be filled annually. Although manufacturers are making efforts to improve magnetic resonance imaging technology, firstly they hope to operate at warmer temperatures (-196); The second option is to switch to a closed cycle freezer to maintain a low temperature, but it will take nearly 5 years to develop new instruments.

According to statistics, magnetic resonance imaging equipment accounts for 20% of the global high-purity helium gas usage, making it the industry with the largest usage of high-purity helium gas. Although the demand for magnetic resonance imaging equipment is decreasing in developed countries, the demand for liquid helium in developing countries is still growing strongly, thus maintaining a strong demand for liquid helium. Other major users of high-purity helium gas include welding (17%), balloons (8%), fiber optic production (6%), leak detection (5%), and scientific research (4%).