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轧辊质量的好坏直接关系到轧板轧材的质量和产量。而球铁轧辊在轧辊中占着重要的比例,它与铸钢轧辊相比,具有较好的耐磨性、消振性和低的缺口敏感性;在采用合金化等条件下,可以获得良好的机械性能。中型以上的轧辊实际上是属于特大截面的铸件,而大多数辊子需开槽孔深50～150毫米;同时由于合金钢板材生产比例不断增大,故对球铁轧辊的质量提出更高的要求。因此如何获得球化良好,耐磨性高且磨损均匀,抗拉强度也好,是轧辊质量好坏的关键所在。过去生产球铁轧辊时主要用镁作球化剂,因而疏
The quality of the roll is directly related to the quality and output of rolled sheet. The ductile iron roll in an important share of the roll, which is compared with the cast steel roll, has good wear resistance, vibration damping and low notch sensitivity; in the use of alloying conditions, you can get good Mechanical properties. Medium-sized roll is actually a large section of the castings, and most of the roll to be slotted hole depth of 50 to 150 mm; the same time due to the increasing proportion of the production of alloy steel sheet, so the quality of the ductile iron put forward higher requirements . Therefore, how to obtain a good ball, wear resistance and uniform wear, tensile strength is good, is the key to the quality of the roll. In the past when the production of ductile iron mainly used as a nodulizer, and therefore sparse