高钡孕育剂在生产厚大灰铸铁件中的应用

Application of High Barium Inoculant to the Production of Large and Thick Gray Iron Casting

在厚大机床类产品的生产中,利用Ba含量在10%的高钡孕育剂进行多次孕育处理,在少加或不加贵重金属合金Cu、Mo等的情况下,性能和金相组织均达到HT300的要求。而且铸件本体硬度在HB190-220,均匀性好,很好地解决了铸件表面硬度与内部硬度差大的问题。

High barium inoculants （10%Ba） are used to carry on multiple inoculations to produce large and thick machine tool products whose performance and metallographic structure, with a little or without precious metal （Cu, Mo） alloys addition, meet the requirement of HT300. Moreover, the casting body has a good uniformity with its hardness ranging from HB 190 to HB220, which solves the problem of the big difference between surface and internal hardness.