高耐磨性球磨钢HM2A的研发
|
摘要
采用半钢+顶底复吹转炉冶炼、LF超高功率精炼、VD真空炉处理、Φ 10 m五机五流方坯连铸等工艺,利用滑板挡渣及红外线检测技术、高铝精炼渣系(Al_2O_3≥35%、R=6～8)造渣脱氧技术,结合连铸工艺参数优化(过热度15～25℃、比水量0.24 L/kg)及合理轧制温度、速度控制(1 000℃、1.85 m/s)等措施,生产出了质量及性能优良的高耐磨性球磨钢HM2A。该球磨钢的低倍质量好,非金属夹杂物<1.5级,硬度>60HRC,冲击韧性好,各项指标满足客户的技术要求。
High wear resistance ball mill steel HM2 A with good quality and performance has been produced by adopting the process of semi-steel + top-bottom combined blown converter, LF ultra-high power refining, VD vacuum furnace treatment, Φ 10 m five-strand billet continuous casting; using the slide slag and infrared detection technology, and slagging and deoxidation technology of high aluminium refining slag system(Al_2O_3>35%, R=6～8); optimizing the continuous casting process parameters(superheat 15～25 ℃, specific water 0.24 L/kg), reasonable rolling temperature and speed and control measures(1 000 ℃, 1.85 m/s). The ball milled steel has good low-power quality with non-metallic inclusions<1.5 grade, hardness >60 HRC, and good impact toughness. The various indicators meet the technical requirements of customers.
High wear resistance ball mill steel HM2 A with good quality and performance has been produced by adopting the process of semi-steel + top-bottom combined blown converter, LF ultra-high power refining, VD vacuum furnace treatment, Φ 10 m five-strand billet continuous casting; using the slide slag and infrared detection technology, and slagging and deoxidation technology of high aluminium refining slag system(Al_2O_3>35%, R=6～8); optimizing the continuous casting process parameters(superheat 15～25 ℃, specific water 0.24 L/kg), reasonable rolling temperature and speed and control measures(1 000 ℃, 1.85 m/s). The ball milled steel has good low-power quality with non-metallic inclusions<1.5 grade, hardness >60 HRC, and good impact toughness. The various indicators meet the technical requirements of customers.
引文
[1]刘发友.70tBOF-LF-VD-CC-HR试制磨球钢80MnCr棒材的开发[J].特殊钢,2017,(3):37～40.
[2]李文兴,刘振民.GCr15轴承钢碳化物高温扩散的研究[J].河北冶金,2012,(3):23～26.
[3]张文风.超高硬韧性耐磨铸钢的研究[D].沈阳:沈阳理工大学,2010.
[4]梁立军,杨建伟,马桂旺.400B磨球钢的开发[J].河北冶金,2011,(5):19～22.
[5]董凤奎,何建楠,王银国.400B磨球钢矫直断裂原因分析[J].河南冶金,2016,(01):11～12.
[2]李文兴,刘振民.GCr15轴承钢碳化物高温扩散的研究[J].河北冶金,2012,(3):23～26.
[3]张文风.超高硬韧性耐磨铸钢的研究[D].沈阳:沈阳理工大学,2010.
[4]梁立军,杨建伟,马桂旺.400B磨球钢的开发[J].河北冶金,2011,(5):19～22.
[5]董凤奎,何建楠,王银国.400B磨球钢矫直断裂原因分析[J].河南冶金,2016,(01):11～12.