一、产量根据1979年的统计,铸铁在铸造合金中所占的比例达80.1%(表1,表2)。由此可见,铸铁依然是一种重要的铸件材料。从铸铁的种类来看,如表3所示,灰铸铁仍占很大的比重,但是球墨铸铁的生产也相当活跃,两者合计,高达整个铸铁生产总量的93.8%。从这两种铸铁的用途和使用比例来看,如表4所示,有约一半左右是应用在汽车工业上的,特别是球墨铸铁,这种情况更为明显。灰铸铁大量用在钢锭模和铸锭底板,此外,在机床 Production According to the statistics of 1979, the proportion of cast iron in casting alloy reached 80.1% (Table 1 and Table 2). This shows that cast iron is still an important casting material. From the type of cast iron, as shown in Table 3, gray cast iron still accounts for a large proportion, but the production of ductile cast iron is also very active, both together, up to 93.8% of the total cast iron production. From the use of these two kinds of cast iron and the use of view, as shown in Table 4, about half of the application is in the automotive industry, especially ductile iron, the situation is even more obvious. A large number of gray cast iron used in ingot mold and ingot floor, in addition, in the machine