近年来,日美苏等国相继研制了专门用于轧辊表面钝化的电火花加工机。经过电火花放电钝化的轧辊表面、对轧制的钢板具有良好的装饰外观和对油膜的密结性、并大大延长了轧辊寿命,改善了轧制过程的工艺条件。此外,苏联还对碾压面粉和甘蔗用轧辊也采用了同样方法,在经济上获得了良好效果。 In recent years, Japan, the United States and the Soviet Union and other countries have developed a dedicated roll surface passivation EDM machine. After the spark discharge passivation roller surface, the rolled steel plate has a good decorative appearance and the oil film of the cohesion, and greatly extended roll life, improved the rolling process conditions. In addition, the Soviet Union also adopted the same method for rolling flour and sugar cane rolls, which achieved good economic results.