Study of Ultra High Power Heat Source of Electron Beam and its Application for Welding (Report 2)

Theoretical Consideration and Observation for Deep Penetration

Abstract

Some theoretical discussions were performed for the penetration depth and an empirical formula was given for practical usage, which was certified to be correct for each output level up to 100 KW of high energy density beam.
A new type X-ray camera which detects the “beam hole X-ray” emitted from a beam hole was developed and it has more validity as the penetration became deeper. Using this method the deep penetration depth could be observed even during welding, besides after welding.