Zeroing In on High-Purity Gases for Beaumont 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 used to solder lead in electronic component circuit boards. And it wasn’t until 2002 that CO2 lasers were employed to weld polymers. Today, Coastal Welding Supply, one of over 150 PurityPlus® Partners at 600 locations nationwide, is thrilled to be a trusted Beaumont producer of the high-purity specialty gases so essential to the gas laser welding process. Our principle customers are majorly automated high-volume manufacturers. Those engaged in the automotive industry are maybe the most conspicuous exemplars of such.

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 actually generates the laser light itself – infrared radiation – is CO2.
  • Shielding gases isolate the weld area from oxygen and water vapor, which helps boost the speed and quality of the welding process. Argon is the most common shielding gas. It’s often mixed with helium, oxygen, or carbon dioxide, which notably elevates its plasma suppression properties.
  • As a resonator gas, ultra-high-purity (99.999%) PurityPlus® helium offers extremely high thermal conductivity, the better to conduct heat away from the electric discharge. This makes it amore than suitable choice for very 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 realize the very high laser powers needed for laser cutting and welding.
  • PurityPlus® nitrogen, particularly as an intermediary with CO2, is also beneficial for achieving very high laser powers.
  • PurityPlus® argon, an inert gas and thus fantastic as a shielding gas in laser welding, affords full protection against ambient air. Given that it normally supports plasma generation, it should not be used for laser powers above 3 kW.

Regardless of your specific laser welding application here in Beaumont, you can be confident we have the PurityPlus® specialty gases with the certified high- or ultra-high purity needed to carry it off. Contact Coastal Welding Supply today.