During the electron beam rapid manufacturing procedure of large metal work piece

the electron beam is used for scanning and heating in order to implement real-time annealing treatment which can eliminate the residual stress in the electron beam freedom fabrication process and reduce the deformation caused by the stress accumulation. In this paper

an electron beam high-frequency deflection scan control experiment platform

which consists of industrial computer

waveform generation card

drive circuit

and deflection scanning coil

is built to generate X

Y output waveform

do rectangular scan and circular offset scan. LabVIEW is used to develop the software interface. A real time annealing finite element model is built to analyze the influence of scanning on temperature distribution difference in a range of 100mm×100mm. The conclusion is the temperature difference in the area is reduced from 94℃ to 11℃ which improves the uniformity of the temperature distribution when the beam current is 30mA

beam spot radius is 4mm

beam spot overlap is 1mm

and using the electron beam to scan for 0.6323s with a speed of 25m/s.