引言: 我厂轧辊的废品主要是复合轧辊裂纹(该废品量占总废品量的40～60％)。八○年以后,成立了裂纹攻关小组,在解决轧辊铸造裂纹方面取得了很大进展。一、复合轧辊铸造工艺简介我厂采用的是传统的半冲洗复合孕育铸造方法,即利用亚共晶成分的铁水一次浇注到上辊颈高度的30～50％水平面高度,保持所需要的白口层厚度(静置时间180～300秒)后,由同包铁水和固体硅铁 Introduction: The scrap of our factory roll is mainly the crack of the composite roll (the amount of waste accounts for 40-60% of the total amount of waste). After 80 years, set up crack research team, made great progress in solving the casting roll cracks. First, the introduction of composite roll casting process I plant is used in the traditional half-flushing compound inoculation casting method, the use of sub-eutectic composition of a hot metal pouring to the height of the upper roll neck height of 30 to 50%, to maintain the desired white Layer thickness (standing time of 180 to 300 seconds), from the same package of molten iron and solid ferrosilicon