在灰铁生产中加入含硼生铁，代替价格较高的硼铁合金等，以达到提高性能的目的。结果表明，含硼量在０．０２％～０．０６％时，力学性能，σｂ＝２１２～２３９ＭＰａ、ＨＢ＝１９７～２０９，而且截面硬度分布均匀。随含硼量增加，石墨细化、珠光体片间距减小，硬质相硼碳化物量增多。当Ｂ＝０．０５％时，相对耐磨性比ＨＴ２００高１．２倍 In gray iron production by adding boron pig iron, instead of the higher prices of ferroboron, etc., in order to achieve the purpose of improving performance. The results show that the mechanical properties, σb = 212 ~ 239MPa, HB = 197 ~ 209 and the uniform distribution of hardness are obtained when the content of boron is between 0.02% and 0.06%. With the increase of boron content, graphite refinement, pearlite sheet spacing decreases, the amount of boron carbides increases. When B = 0.05%, the relative wear resistance than HT200 1.2 times