微量铅对铸铁组织和性能的影响

Effect of Trace Pb on the Structure and Properties of Gray Iron

研究了微量铅对灰铸铁石墨形态、基体组织、机械性能以及铸造性能的影响。结果表明，铅显著影响铸铁石墨形态，导致机械性能的恶化，铸铁中铅含量应控制在０ ．００５ ％ 以下。

The effect of trace Pb on the graphite morphology,matrix structures and mechanical properties and castability of grey iron was investigated,the result showed that Pb remarkably changed graphite morphology of grey iron and Pb content must be limited to ≤0.005%