一、前言随着球墨铸铁的深入研究和推广应用,出现了一种介于球墨铸铁和灰铸铁之间的新型材料,即蠕状石墨铸铁。由于其石墨形状处于球状和片状之间的一种过渡型石墨,所以它既具有接近于球铁的强度、刚度、一定的韧性和良好的耐磨性;又具有接近于灰铸铁的铸造性能和导热性能。因此,这种材料愈来愈引起人们的重视,并已在生产上开始应用,如用来代替高强度灰铸铁、合金铸铁、黑心可 I. Introduction With the deepening research and popularization and application of ductile iron, there is a new type of material between ductile iron and gray iron, that is, creep-like graphite cast iron. Because of its graphite shape between spherical and flaky graphite, it has both close to the ductile iron strength, stiffness, a certain degree of toughness and good wear resistance; but also has a cast iron close to the casting performance And thermal conductivity. Therefore, this material attracts more and more people’s attention, and has started to apply in the production, as used to replace the high-intensity gray cast iron, alloy cast iron, black heart can