HIGH VOLTAGE ELECTRON BEAM WELDING :EFFECT OF PROCESS PARAMETERS

摘要

The effect of varying the main operating parameters in turn, on the geometry of the resulting melt runs at otherwise constant working conditions, is examined for a Hamilton Standard high voltage electron beam welding machine. From macrosections, relation¬ships are obtained between the relative depth of pene¬tration in 1/2 in. thick En 58J stainless steel and the accelerating voltage, beam current, welding speed and particularly focus current.nFurther data on beam characteristics are obtained by deflecting the electron beam in a circular path at 60 c/sec over a tungsten probe, which thereby collects sharp pulses of current.