含0.06%～0.30%Cr的可锻铸铁的试验研究

Study on Malleable Cast Iron Containing 0 06%～0 03%Cr

试验结果表明，对于含Ｃｒ量００６％～０３０％的可锻铸铁，可以加入０２％～０２５％的ＢＺⅢ型变质剂来较好地解决石墨化退火困难的问题，且其力学性能明显改善（达到ＫＴ３００６的指标）。

Abstract It is difficult for malleable cast iron above 0 06% chromium to accomplish graphitizing annealing,especially highsulphur iron melted in the cupola in our country.Our trials showed that additions of 0 2%～0 25% inoculant to malleable cast iron with chromium contents of 0 06%～0 30% can improve ascast carbide morphology and reduce the time of graphitizing annealing.