【摘要】 对GCr15轴承钢LF精炼过程各阶段的钢中氧及夹杂物含量进行了研究。结果表明,在现有工艺条件下,LF精炼15~20min时钢中氧含量已降低到较低水平,LF精炼结束后软吹时间控制15min左右较为合理;LF精炼结束及中间包钢中大部分夹杂物尺寸在15μm以下;应进一步加强浇铸环节的控制,减少钢水的二次污染。更多还原

【Abstract】 This paper investigates the oxygen content and non-metal inclusions of the GCr15 bearing steel in each and every phase of the LF refining process.The results indicate that in the existing process conditions the oxygen content of steel has been reduced to a lower level through 15 to 20 minutes of LF refining.The appropriate time for soft blowing upon completion of LF refining is proved to be about 15 minutes.The dimension of the non-metal inclusions at the end of LF process is below 15μm;To reduce the secondary contamination of steel the casting process should be strengthened.更多还原