Focusing on High-Purity Gases for Columbus Laser Welding


Lasers were originally proposed by none other than Albert Einstein in the early days of the 20th century. It wasn’t until the 1980s, though, that lasers were applied to solder lead in electronic component circuit boards. And it wasn’t until 2002 that CO2 lasers were used to weld polymers. These days, Delille Oxygen Company, one of better than 150 PurityPlus® Partners at 600 locations across the states, is honored to be a trusted Columbus producer of the high-purity specialty gases so necessary to the gas laser welding process. Our main customers are majorly automated high-volume manufacturers. Those associated with the automotive industry are likely the most conspicuous cases in point.

A few gas laser basics:

  • Resonator gases are most often a combination of helium (He), carbon dioxide (CO2), and nitrogen (N2). The active gas that in truth produces the laser light itself – infrared radiation – is CO2.
  • Shielding gases keep the weld area free of oxygen and water vapor, which helps increase the speed and quality of the welding process. Argon is the more traditional shielding gas. It’s frequently mixed with helium, oxygen, or carbon dioxide, which significantly improves its plasma suppression properties.
  • As a resonator gas, ultra-high-purity (99.999%) PurityPlus® helium provides incredibly high thermal conductivity, the better to conduct heat away from the electric discharge. This makes it amore than suitable choice for truly high-powered laser welding.
  • PurityPlus® carbon dioxide, while much used by itself to operate CO2 lasers, is better intermixed with helium and nitrogen so as to achieve the very high laser powers mandatory for laser cutting and welding.
  • PurityPlus® nitrogen, especially as an intermediary with CO2, is also helpful in securing very high laser powers.
  • PurityPlus® argon, an inert gas and thus first-rate as a shielding gas in laser welding, provides total protection against ambient air. Since it generally aids in plasma generation, it should not be used for laser powers above 3 kW.

Regardless of your specific laser welding application here in Columbus, you can be sure we supply the PurityPlus® specialty gases with the certified high- or ultra-high purity necessary to accomplish it. Contact Delille Oxygen Company today.