Focusing on High-Purity Gases for Columbus Laser Welding


Lasers were originally proposed by none other than Albert Einstein at the start 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 applied to weld polymers. These days, Delille Oxygen Company, one of over 150 PurityPlus® Partners at 600 locations across the states, is happy 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 engaged in the automotive industry are likely the most distinctive cases in point.

A few gas laser basics:

  • Resonator gases are commonly a combination of helium (He), carbon dioxide (CO2), and nitrogen (N2). The active gas that in truth engenders 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 familiar shielding gas. It’s frequently mixed with helium, oxygen, or carbon dioxide, which significantly raises its plasma suppression properties.
  • As a resonator gas, ultra-high-purity (99.999%) PurityPlus® helium delivers incredibly high thermal conductivity, the better to conduct heat away from the electric discharge. This makes it a great 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 needed 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 supports plasma generation, it should not be used for laser powers above 3 kW.

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