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主要研究了钢中氧含量与硫化物夹杂物的种类和形态之间的关系,以控制合适的氧含量,从而提高线材的切削性能,对15个炉次的冶炼过程及其成品取样,分析氧含量对硫化物夹杂的成分、形态及切削性能的影响。结果表明:钢中硫化物与氧化物形成的复合夹杂物的比例会随着氧含量的增加而变大,硅、铝、钙氧化物为核心,外围包裹MnS或CaS的纺锤形或球形复合夹杂对提高切削性能非常有利,应保证成品线材中的氧的质量分数不低于0.0140%。
Mainly studied the relationship between the oxygen content in steel and the type and morphology of sulfide inclusions in order to control the appropriate oxygen content, thereby improving the cutting performance of the wire, smelting process and finished product sampling of 15 heats, analysis of oxygen Content of sulfide inclusions composition, morphology and cutting performance. The results show that the proportion of composite inclusions formed by sulfide and oxide in steel becomes larger with the increase of oxygen content. The spindle or spherical composite inclusions with Si, Al and Ca oxides as their core and MnS or CaS as their outer peripheries To improve the cutting performance is very beneficial, should ensure that the quality of the finished wire rod oxygen content of not less than 0.0140%.