前言可锻铸铁中的硫高如果处理不好,容易造成铸件缺陷多、铸造性能差、机械性能低。硫的主要来源是焦炭。过去我们用过的土焦近600吨。其中含硫量1．6~2．8%,固定碳在68~72%左右,铁水含硫一般在0．35~0．54%。针对这种情况,我们将生产和试验结合起来组织攻关,现已能稳定生产出高牌号35—10以上的高硫铁素体可锻铸铁。生坯合格率达95%以上。我省韶山银田农机厂、马迹塘马铁厂等9个单位采取同样工艺也收到很好的效果。现重点介绍于下。 Foreword Malleable iron in the high sulfur if not handled properly, likely to cause more defects casting, casting poor performance, low mechanical properties. The main source of sulfur is coke. In the past we used nearly 600 tons of coke. The sulfur content is 1.6-2.8%, the fixed carbon content is about 68-72%, and the hot metal content is generally 0.35-0.54%. In response to this situation, we will combine the production and testing organizations tackle, is now able to stable production of high grade 35-10 high-strength ferritic malleable iron. Green pass rate of 95% or more. Shaoshan Yantian Agricultural Machinery Factory, horse track Tong Ma Iron Factory and other nine units to take the same process also received good results. Now focuses on the next.