Introduced a new NDT technique to reveal fatigue cracks on a punching/forging die-the fluorescent magnetic particle testing technique by spontaneous magnetization of ferromagnetic metals.
介绍了一种无损检测冲压/锻压模具疲劳裂纹的新方法——铁磁性金属构件自磁化萤光磁粉探伤法,简介了其研究缘由、观测发现、理论依据、方案选择、实践结果、新方法的优越性和局限性及其在冲压/锻造和其他工业中的推广前景。
The main factors that affect the uniformity of e -beam include two aspects: one is the diode design and diode electrical field, the other is the self-magnetic field.
对大面积矩形强流电子束自磁场在无限长束模型和有限长束模型下作了计算,给出了磁场的强度分布,并计算了在自磁场作用下的束电子的运动轨迹。