蠕墨铸铁是一种介于灰铸铁与球墨铸铁之间的新型铸铁材料,兼有灰铸铁与球墨铸铁的某些优良性能。早在六十年代初期,无锡柴油机厂在研究无镁球化剂的过程中,在试验“稀土球铁”时,曾试制了500只左右的气缸套,球化率一般只有30～40％,但抗拉强度也有50～60公斤力/毫米~2。用户使用都很满意,既耐磨又耐腐蚀,当时把它称为“稀土高强度铸铁”,由于这种新材料具有独特的优点,因而越来越受到人们的重视,已广泛地应用于工 Compacted graphite cast iron is a new type of cast iron between gray iron and ductile iron with some excellent properties of gray and ductile iron. As early as the early 1960s, Wuxi Diesel Engine Factory experimented with 500 or so cylinder sleeves while testing “rare earth ductile iron” during the study of magnesium-free nodulizer. The nodulizing rate was generally only 30-40% But the tensile strength is also 50 ~ 60 kg / mm ~ 2. Users are satisfied with the use of both wear and corrosion resistance, when it was called “rare earth high strength cast iron”, due to the unique advantages of this new material, and therefore more and more people’s attention has been widely used in engineering