Strategies for monitoring and control with seam tracking in electron beam welding

Nowadays high qualities welds which have a very narrow form and high accuracy can be obtained with advanced monitor and control system. In this paper are presented the main components of the electron beam welding equipment CTW 5/60 and proposed two welding strategies with seam tracking and adapted to the possibilities of the experimental setup. The first strategy consists in dividing the surface of the material over several successive frames, while the second strategy involves performing the operation in a single pass. Aspects of machine vision, meaning the image reconstruction, seam detection and image processing methods are also summarized.