球墨铸铁的机械性能(强度)高,铸造性能(流动性)好,使它在机械制造业中,已成为一种重要的结构材料,受到人们广泛的重视,配合近十年来特种铸造(金属型、失腊、壳型、化学硬化)方法的发展,大大地扩充了铸造的用途,从而提供以铁代钢,以铸代锻的 Ductile iron has high mechanical properties (strength) and good castability (fluidity), so it has become an important structural material in the machinery manufacturing industry. It has received extensive attention by the people. With the special casting (metal type , Lost wax, Shell type, Chemical hardening) method has greatly expanded the use of casting, which provides iron-based steel to cast forging