以前,球墨铸铁中存在一些微量元素(如Sb,Bi等),统称之谓干扰元素。要求限制其含量。甚至于某些作者还提出一些微量元素的总和不得大于多少的公式。但是随着技术的进展,对微量元素的看法已有改变。锑在大断面中促使石墨球数的增加,获得较高的机械性能这一点已获得一致的意见。但是在中、小断面的球墨铸铁中,随加入方法的不同,其作用和许用量尚存在不同的意见。为此,我们在球墨铸铁中采用型内孕育方法加入不同的锑量进行了研究。一、试验条件熔化设备为2.5—3吨/小时带前炉的酸性热风冲天炉。铁料配比见表1。球化剂是用1~＃稀土自己配制,其配比组成见表2。用冲入法 Previously, there were some trace elements in ductile iron (such as Sb, Bi, etc.), collectively referred to as interfering elements. Required to limit its content. Even some authors have proposed some formula for which the sum of trace elements should not be greater than how much. But as technology advances, the perception of trace elements has changed. Antimony in the large cross-section of graphite balls to promote the increase in the number of access to higher mechanical properties that have been agreed. However, in the medium and small sections of ductile iron, with the addition of different methods, the role and the amount of Xu there are different views. For this reason, we conducted a study on the addition of different amounts of antimony in the ductile iron by the inoculation method. First, the test conditions Melting equipment for the 2.5-3 t / h with a hot stove before the hot air cupola. Iron material ratio see Table 1. Nodulizer is prepared with 1 ~ # rare earth, the ratio of composition in Table 2. Use punching method