Version 2015 ©European Aluminium Association ([email protected]) 1 EAA Aluminium Automotive Manual – Joining 4. Beam welding Contents: 4. Beam welding 4.0 Introduction 4.1 Laser beam welding 4.1.1 Laser sources 4.1.1.1 CO2 lasers 4.1.1.2 Solid state lasers 4.1.2 Laser beam welding processes 4.1.2.1 Heat conduction welding 4.1.2.2 Deep penetration welding 4.1.2.3 Twin laser welding 4.1.2.4 Remote laser welding 4.1.2.5 Laser welding of tubes, profiles and tailored blanks 4.1.2.6 Laser deposit welding 4.1.3 Laser welding defects 4.1.4 Joint configurations 4.1.5 Addition of filler wire 4.1.6 Shielding gases for laser welding 4.1.7 Characteristics of laser welding of aluminium alloys 4.2 Electron beam welding 4.2.1 Vacuum electron beam welding 4.2.2 Non-vacuum electron beam welding 4.2.3 Electron beam welding of aluminium alloys