2. Use of helium transportation and transportation equipment: Helium is always the gas with the lowest boiling point and has excellent thermal conductivity, so it is widely used to test radiator heat exchanger, air conditioning module, fuel tank, torque converter and other important automobile parts to ensure that it meets the quality specifications. In addition, helium can also be used in combination with argon, which is increasingly used for airbag inflation.
3. Helium for entertainment and decoration: Everyone should have heard of the performance of helium changing sound. After inhaling helium, because helium spreads sound almost three times as fast as air, the frequency of sound will become higher after inhaling helium, which can make people imitate tenor singers and speak in harsh voices, just like cartoon characters in the old days. However, helium is also a suffocating gas. If there is no professional guidance, it is easy to inhale too much helium and cause suffocation, which is in danger of death! Recently, there have been a lot of news related to the sound change of helium. For example, Morgan Riemann, a veteran black actor in Hollywood, changed his voice with helium and became a Donald Duck accent in three seconds. For example, not long ago, the famous star Balotelli shouted Liverpool in a very funny tone after inhaling helium.
4. Using helium for medical care: He-Ne laser can be used for surgery, treating amblyopia and activating blood vessels for health care. The gas medium in He-Ne laser is neon and high purity helium. In addition, due to its low-temperature superconductivity, helium is an ideal frozen gas and can be used as a superconducting magnet for magnetic vibration and nuclear magnetic vibration. Helium can reach the low temperature of -45 1 Fahrenheit, and effectively obtain high-resolution images of internal organs and tissues.
5. Electronic research on the use of helium: Helium plays an important role in the manufacture of semiconductors, liquid crystal panels and optical fiber lines, which can realize the rapid cooling of parts, thus improving productivity, and can also control the heat transfer rate to improve production efficiency and reduce defects; In addition, helium can also be used as a carrier gas in the production process, and high-purity helium can be used as a carrier gas for gas chromatograph /GC-MS and other instruments.
6. Helium is used for welding and metal processing: high-purity helium and high-purity argon are used as shielding gases for special welding. The inertia of helium at arc temperature makes it an ideal gas for welding high thermal conductivity materials such as aluminum, stainless steel, copper and magnesium alloy, and can also be used as quenching gas and furnace gas in heat treatment process to improve the tolerance and quality of parts.
7. Use of Helium Diving Gas: Deep-water diving oxygen cylinders must be filled with oxygen and helium. Helium is not easy to be paralyzed in the deep sea, so helium is used instead of nitrogen in deep sea diving.