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研究工作选用滚珠轴承钢进行,冶炼采用十种不同终脱氧制度(A10.5kg/t、A11kg/t、A11.5kg/t、Ca1kg/t、Mn1kg/t、Ca-Si1kg/t、Si-Mn-Ca7kg/t、AMS10kg/t、Ce-La0.5kg/t及不进行终脱氧,使铸造电极获得不同类型的原始夹杂物。试验结果表明:电渣重熔过程去除非金属夹杂物受到电极中原始夹杂物成分及尺寸的影响。因此电渣钢中非金属夹杂物的总量、形态及化学成分在一定范围内可精确控制。一般地说,低熔点、大颗粒原始夹杂物通过电渣重熔易去除,因为它们易于扩散到钢渣界面,与炉渣接触后为炉渣所吸收。实验表明:自耗电极钢冶炼用Si-Mn-Ca及AMS脱氧具有最好精炼效果。在工业炉上生产结果证实上述结论。
The research work was conducted with ball bearing steel. Ten different final deoxygenation systems (A10.5kg / t, A11kg / t, A11.5kg / t, Ca1kg / t, Mn1kg / t, Ca-Si1kg / t, Si-Mn - Ca7kg / t, AMS10kg / t, Ce-La0.5kg / t and without final deoxidation, the cast electrode obtained different types of primary inclusions.The results show that: Electroslag remelting process to remove non-metallic inclusions by electrode The original inclusions composition and size of the impact.Therefore, the total amount of non-metallic inclusions in ESR, morphology and chemical composition can be accurately controlled within a certain range.Generally speaking, the low melting point, large particles of the original inclusions by ESR Easy to remove because they are easy to diffuse to the slag interface and contact with the slag after being absorbed by the slag.The experimental results show that Si-Mn-Ca and AMS deoxidation of the consumable electrode steel have the best refining effect.It is produced in the industrial furnace The results confirm the above conclusion.