轴承钢水浸探伤缺陷分析与改善实践
Reduction of the Macroscopic Inclusions Evaluated by Ultrasonic Test
本文以韶钢BOF-ARS(氩站)-LF-RH-CC工艺路线生产GCr15 轴承钢生产为研究背景,通过轧材超声水浸探伤、定位解剖分析与冶炼全流程取金相样分析相结合的方法,对钢中宏观夹杂物缺陷的特征及关键影响因素进行分析,并提出相应改善措施。研究结果表明:精炼时产生的细小CaO-Al2O3-MgO类夹杂物,随着成分中CaO含量的增加以及Al2O3含量的降低,与钢液润湿性增强,较难从钢中上浮去除,在凝固过程团聚并形成宏观夹杂物的机率增大。冶炼过程酸溶铝…查看全部>>
In this paper,the characteristics and main impact factors of macroscopic inclusion defects in steel were analyzed by combining ultrasonic detection,location analysis and metallography sample analysis,based on the production of GCr15 bearing steel produced by BOF-ARS(argon station)-LF-RH-CC process in Shaosteel,and corresponding improvement measures were proposed.The results show that it is difficult to remove the fine CaO-Al2O3-MgO inclusions,as the wettabil…查看全部>>
龙鹄;苗志奇;丘文生;鲁金龙;余大华;成国光;
bearing steel Ultrasonic test Macroscopic inclusion LF refining purity
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