Compared with the manner of addition Cr simply, add Cr with Sn can increase value of Brinell hardness and quanties of pearlite, but it has less influence on the upgrade of distance between commutator segments of pearlite.

• 相对于单纯加Cr,采用Cr+Sn的合金加入方式可以明显提高铸件的布氏硬度值和组织中的珠光体量,但对于提高珠光体的片间距等级和减少渗碳体量则效果不明显。