蠕墨铸铁作为一种新型工程材料应用于生产,只有十几年的历史。1976年我们用冲天炉研制蠕铁,并探索其在重型机械上大中型铸件的适用性。对蠕铁、灰铁和球铁的主要机械性能、铸造性能和(?) 些耐热性能进行了对比测试。结果表明,蠕铁不仅有较高的强度,而且具备良好的综合耐热性能。我们研制的受热循环条件下的耐热铸件,具有很好的应用价值。1980年曾先后生产两批200多支8in蠕铁钢锭模,分别在太原重机厂铸钢车间(平炉 Compacted graphite cast iron as a new type of engineering materials used in the production, only a dozen years of history. In 1976, we developed the use of cupola to produce vermicular iron and explored its suitability for large and medium sized castings on heavy machinery. The main mechanical properties of cast iron, gray iron and ductile iron, casting performance and heat resistance (?) Were compared. The results show that vermicular iron not only has higher strength, but also has good comprehensive heat resistance. We have developed under the conditions of heat-resistant heat-resistant castings, with good application value. 1980 has produced two batches of more than 200 8in vermicular iron ingot mold, respectively, in Taiyuan Heavy Machinery Plant Steel Casting (open hearth furnace