A LITERATURE REVIEW ON ELECTRON BEAM WELDING

Electron beam welding is a fusion welding process where electrons are generated by an electron gun and it is accelerated to high speeds using electrical fields. This high speed stream of electrons is tightly focused on the weld spot using magnetic fields and applied to the materials to be joined. This beam of electrons creates kinetic heat as it impacts with the workpieces, causing them to melt and bond together,it is widely used in the Aerospace and Defense industries mainly due to the Narrow Fusion Zone generated as less amount of metal is melted during joining which leads to less distortion and less amount of heat.The Electron Beam Welding process is complex in nature and is controlled by large number of parameters. Welding Input Parameters plays a vital role in determining the quality of weld. Parameters such as Accelerating Voltage,Beam Current, Depth of Penetration,Beam Focal Diameter and Welding Speed are part of the Electron Beam Parameters. This paper reviews various researches made in Electron Beam Welding process and conclude with factors influencing the high quality of Weld.