Shielding Gases for Laser Beam Welding (LBW)

An inert shielding gas is used to protect the molten pool from the atmosphere, keep spatter levels minimal and remove the plasma cloud, which can absorb the laser beam. Shielding gases most commonly used are pure helium, pure argon and helium/argon mixes. Industrial grade gases are generally of sufficient purity when utilized as an assist gas and are supplied by cylinders, banks or bulk according to volume and pressure requirements.

Prest-O-Sales can help determine the appropriate shielding gas and can assist with supplying your needs.