72A钢非金属夹杂物行为

Non-Metallic Inclusions in 72A Steel

采用多种方法对酒钢72A钢中非金属夹杂物进行了调查,对夹杂物的类型、来源、数量及尺寸进行了讨论.实验证明,铸坯中夹杂物有60％外来夹杂物,40％为脱氧产物;引起线材拉拔脆断的主要原因是外来大颗粒脆性夹杂,而控制好脱氧产物和外来夹杂物的组成、形貌、大小及分布,是解决线材拉拔脆断的关键.

Non-metallic inclusions of 72A Steel investigated invest using multi-measurements in Jiuquan Group. The amount, type, source, composition and distribution of the inclusions were discussed. The results show that more than 60% of inclusions in billet come from exotic inclusions, and 40% of inclusions in billet origin from oxides. The main reason of wire-breaking is large exotic inclusions. It is important to control the composition, shape, size and distribution of these endogenous and exotic inclusions.