易切削钢用高黏度连铸保护渣的研究与应用
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摘要
针对国内某钢厂浇注易切削钢时铸坯表面出现夹渣、振痕较深等缺陷,建议采用高黏度保护渣。从振痕形成机制和保护渣作用机制的角度出发,并结合热力学和ANSYS模拟软件分析,对保护渣应具有的高黏度特性进行了系统研究。最后根据生产实际,对专用保护渣的理化性能进行了优化,工业试验效果较好,消除了铸坯缺陷,获得了质量合格的铸坯。
In view of the defects of slag inclusions and deeper osciallation marks that occurred on the surface of free-cutting steel slab in a domestic steel plant.The use of the high viscosity mold flux was suggested.In the term of the osciallation marks formation mechanism and the mold flux mechanism,and combining with thermodynamic analysis and ANSYS software,the high viscosity characteristics of mold flux were systematically studied.Combined with the actual production conditions,physical and chemical properties of the special mold flux was optimized,industrial test result was good,the casting defect was eliminated,so that qualified casting quality could be obtained.
In view of the defects of slag inclusions and deeper osciallation marks that occurred on the surface of free-cutting steel slab in a domestic steel plant.The use of the high viscosity mold flux was suggested.In the term of the osciallation marks formation mechanism and the mold flux mechanism,and combining with thermodynamic analysis and ANSYS software,the high viscosity characteristics of mold flux were systematically studied.Combined with the actual production conditions,physical and chemical properties of the special mold flux was optimized,industrial test result was good,the casting defect was eliminated,so that qualified casting quality could be obtained.
引文
[1]饶添荣.连铸保护渣的特性及其选用[J].上海金属,2004,26(2):50-53.
[2]刘强,潘志华,李庆彬,等.钙长石系轻质隔热砖的制备及钙长石形成过程[J].硅酸盐通报,2010,29(6):1269-1274.
[3]李殿明,邵明天,杨宪礼,等.连铸结晶器保护渣应用技术[M].北京:冶金工业出版社,2008.
[4]卢盛意.连铸坯质量第二版[M].北京:冶金工业出版社,2000.
[5]章耿,刘承军.高速连铸保护渣的理化性能研究[J].炼钢,2002,18(3):35-38.
[6]金小礼,雷作胜,任忠鸣,等.连铸坯振痕形成机理及电磁控制技术[J].上海金属,2007,29(1):15-20.
[7]迟景灏,甘永年.连铸保护渣[M].沈阳:东北大学出版社,2004.
[8]MANABU I.Model study on the entrapment of mold powder into molten steel[J].ISIJ International,2000,40(7):685-691.
[9]佐藤哲郎.连铸保护渣熔融特性的改善[J].武钢技术,1995,33(4):29-33.
[10]朱立光,金山同.高速连铸工艺中的结晶器保护渣技术[J].钢铁,1998,33(8):68-71.
[11]张羡夫.惰性气氛和还原剂对低碳连铸保护渣熔速的影响[J].炼钢,2005,21(6):30-32.
[2]刘强,潘志华,李庆彬,等.钙长石系轻质隔热砖的制备及钙长石形成过程[J].硅酸盐通报,2010,29(6):1269-1274.
[3]李殿明,邵明天,杨宪礼,等.连铸结晶器保护渣应用技术[M].北京:冶金工业出版社,2008.
[4]卢盛意.连铸坯质量第二版[M].北京:冶金工业出版社,2000.
[5]章耿,刘承军.高速连铸保护渣的理化性能研究[J].炼钢,2002,18(3):35-38.
[6]金小礼,雷作胜,任忠鸣,等.连铸坯振痕形成机理及电磁控制技术[J].上海金属,2007,29(1):15-20.
[7]迟景灏,甘永年.连铸保护渣[M].沈阳:东北大学出版社,2004.
[8]MANABU I.Model study on the entrapment of mold powder into molten steel[J].ISIJ International,2000,40(7):685-691.
[9]佐藤哲郎.连铸保护渣熔融特性的改善[J].武钢技术,1995,33(4):29-33.
[10]朱立光,金山同.高速连铸工艺中的结晶器保护渣技术[J].钢铁,1998,33(8):68-71.
[11]张羡夫.惰性气氛和还原剂对低碳连铸保护渣熔速的影响[J].炼钢,2005,21(6):30-32.