Study on Ultra High Energy Density Heat Source of Electron Beam and its Application for Welding (Report 1)

Development and Function of 100KW Class Electron Beam Welder

Abstract

A 100KW-class electron beam welder was designed and assembled for the first time in the world with the maximum output power of 120KW. Typical material qualities of a thermionic emission type cathode and its life time were tested and discussed for such a high power electron beam production. Various properties of the bead penetration were investigated for each output level of the beam up to 100KW. Some fundamental discussions were given for the penetration depth of the bead.