由于电子束的能量密度极高，因此，电子束焊接已经获得了愈来愈广泛的应用。特别是随着电子束在材料表面改性中的应用．越来越显示出其优越性。我们使用的一台30kw、150kV大功率高压真空电子束焊机阴极逆变电源在电子束表面熔凝处理实验中出现故障，烧毁了大功率晶体管，致使逆 Due to the extremely high energy density of electron beams, electron beam welding has gained more and more widespread use. Especially with the electron beam in the surface modification of the material. More and more shows its superiority. We use a 30kw, 150kV high-power high-voltage vacuum electron beam welding cathode inverter power in the electron beam surface melting experiment failed, burned the high-power transistors, resulting in inverse