蠕墨铸铁生产中,要稳定地获得蠕虫状石墨,对变质元素的含量要求范围很窄,且很多工艺因素都可造成变质元素的波动超限而致使蠕墨铸铁件的组织和性能达不到技术要求。同时,从降低成本和满足高生产率的角度考虑,生产中应尽量避免采用检测金相组织和力学性能的方法来控制铸件质量。 Compacted graphite cast iron production, to obtain stable worm-like graphite, metamorphic elements of the content of a narrow range of requirements, and many factors can cause deterioration of metamorphic elements of the over-limit, resulting in compacted graphite cast iron organization and performance of less than skills requirement. At the same time, from the perspective of cost reduction and high productivity, the quality of castings should be avoided by adopting the method of testing microstructure and mechanical properties in production.