Application of high-purity helium gas in laser cutting

Helium, high-purity helium

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Laser cutting is a highly precise cutting technology widely used in the processing and manufacturing of metal and non-metal materials. In the process of laser cutting, gas must be used to blow the cutting area to avoid the generation of oxides and reduce laser scattering. High purity helium gas is an ideal blowing gas, which has strong inert properties and does not undergo chemical reactions with other metals or materials, thus ensuring the stability of cutting. In addition, the low density of high-purity helium gas is also one of the reasons why it can become an excellent blowing gas, as it can effectively reduce the volatiles and smoke in the cutting area, ensure the smooth progress of cutting work, and avoid environmental pollution. This excellent performance has made high-purity helium gas one of the important gas materials in the manufacturing industry, providing strong support for the efficient implementation of laser cutting technology.

In laser cutting, carbon dioxide laser is commonly used for cutting, which requires gas to blow the cutting area. Specifically, with the assistance of gas, the thermal energy of the laser is used to cut the workpiece. When laser cutting is performed, due to the high energy density of the laser, the material on the surface of the workpiece evaporates and rapidly fluctuates, producing high-pressure gas. These gases are forcibly blown out of the cutting area for the next step of cutting.

Therefore, the selection of blowing gas is very important in the laser cutting process. High purity helium gas, with its unique inertness and low density, has become the preferred purge gas with excellent performance. In addition, high-purity helium can maintain the relative stability of the internal air and oxygen content in the cutting area. This is very important for cutting metal, as excessive oxygen may cause oxidation reactions in the metal, which can affect the accuracy and effectiveness of cutting. As an ideal blowing gas, high-purity helium can not only maintain the stability of cutting, but also make the surface of the cut workpiece smoother and meet the design requirements.

In short, high-purity helium gas is an excellent choice as a purge gas in laser cutting processes. It not only has good inert properties, but also effectively reduces the generation of volatiles and smoke in the cutting area, avoiding environmental pollution. At the same time, the low density of high-purity helium gas can effectively maintain the stability of air and oxygen content in the cutting area, resulting in higher cutting accuracy and efficiency, and the surface of the cut workpiece is smoother and more delicate, meeting the requirements.