<正> 为了减少和消除Al_2O_3和CaO·Al_2O_3等类型夹杂物对轴承钢性能的有害影响,采用稀土部分地取代Al,在脱氧后形成RE夹杂物,以期改善轴承钢的接触疲劳性能。 为了比较,以完全按普通轴承钢生产的工艺(Ⅰ)作为参照。试验分别采用终脱氧插Al0.5和0.25kg/t钢并在盛钢桶中加入RE0.08wt-%(Ⅱ,Ⅲ),以及终脱氧插RE
In order to improve the contact fatigue life of the bearing steel, the rare earth was used as deoxidizer partly instead of Al in the conventional processing. This RE ladle deoxidizer in amount of 0.08 wt-% of the melt produces inclusions of Ce_2S_3, CeS, La_2S_3, etc. which tend to increase the fatigue life of the steel by 50%.
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