试验选用球墨铸铁QT700-2,电脉冲处理过后,从其中间位置与电极位置分别取样,采用光学显微镜(OM)及金相分析软件Image-Pro Plus研究了电脉冲对球墨铸铁凝固组织的影响。结果表明,经过电脉冲处理后,其凝固组织中的石墨球分布更加均匀,球化率增加,珠光体的数量增多且电极位置处试样相对于中间位置处球化率更高,而珠光体的含量基本不变。 The test was made of ductile iron QT700-2. After the electric pulse was processed, samples were taken from the middle position and the electrode position respectively. The influence of electric pulse on the solidified structure of ductile cast iron was studied by optical microscope (OM) and metallographic analysis software Image-Pro Plus. The results show that after electrical pulse treatment, the distribution of graphite balls in the solidified structure is more uniform, the spheroidization rate is increased, the number of pearlite is increased and the nodularity of the sample at the electrode position is higher than that in the middle position, while the pearlite The content of the basic unchanged.