铸铁由于孕育处理过程的发展和改进,以及应用镁作变质剂的结果,获得了球状石墨铸铁,这种铸铁的强度与韧性都很高,因而成为一种新的构造材料,同时并在相当程度上打消了钢与铸铁之间的界限。目前这种铸铁还没有定名。由于它具有高度的机械性能,所以有称为“高强度铸铁”,“塑性铸铁”“铸熊球墨塑性铸铁”或“韧性铸铁”等。 Due to the development and improvement of cast iron, as well as the application of magnesium as a modifier, spherical graphite cast iron is obtained, which has high strength and toughness and thus becomes a new construction material and, to a considerable extent, On the elimination of the boundary between steel and cast iron. This cast iron is not yet named. Because of its high mechanical properties, there are so-called “high-strength cast iron”, “plastic cast iron”, “cast iron ball plastic cast iron” or “ductile cast iron”.