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我们经多次试验,找到一种能用HT15 33铁水(C 3.4～3.6％,Si 1.8～2.2％,Mn 0.5～0.8％,P≤0.10％,S≤0.10％)在没有任何设施的普通铁水包内冲制,得到质量稳定的球铁水(一般100公斤以上就可处理),铸态可达到QT45-5要求。通过正火,可达到QT60-2要求。实践表明,这种方法机动、灵活,稳定可靠,很适合零星球铁生产,尤其深受乡镇企业的欢迎。其关键在于配制合适的球铁处理用中间合金。硅钙能抑制镁的过早与铁水
After several tests, we found a hot metal that can be hot-rolled with HT1533 hot metal (C 3.4-3.6%, Si 1.8-2.2%, Mn 0.5-0.8%, P ≦ 0.10%, S ≦ 0.10% Impregnation bag, get quality and stability of the ductile iron water (generally more than 100 kg can be processed), cast to QT45-5 requirements. Through normalizing, QT60-2 requirements can be achieved. Practice shows that this method is mobile, flexible, stable and reliable, very suitable for sporadic iron production, especially by township enterprises welcome. The key is to formulate a suitable intermediate alloy for ductile iron treatment. Calcium can inhibit magnesium premature with hot metal