实验室试验和工业性生产的结果表明,若灰铸铁的稀土残留量适当,不仅能净化铁水,明显地减小灰铸铁的白口倾向与断面敏感性,而且能提高灰铸铁的机械性能与抗孕育衰退的能力。欲获得最佳RE残,必须研究各种工艺因素 The results of laboratory tests and industrial production show that if the proper amount of rare earth residues in gray cast iron can not only purify the hot metal, the white cast of gray cast iron obviously reduces the whiteness tendency and the cross-sectional sensitivity, but also improves the mechanical properties and resistance of gray cast iron Born recession ability. To obtain the best RE residue, you must study a variety of process factors