摘要
通过Mo丝高温电阻炉采用正交实验法研究了LF精炼渣系(/%:28.75～58.05CaO、12.50～32.43Al_2O_3、0～15BaO、8～20SiO_2、6MgO、10CaF_2)的成分对高碳铬轴承钢GCr15(/%:0.99C、1.45Cr、0.034S)脱硫的影响。结果表明,当(CaO)/(Al_2O_3)=2.5,(SiO_2)=14%,(BaO)由0增至8%时,精炼渣对钢液的脱硫率增加,(BaO)由8%增至15%时脱硫率降低;当(BaO)=7.5%,(SiO_2)=14%时,随(CaO)/(Al_2O_3)增加,精炼渣的脱硫率增加;当(BaO)=7.5%,(CaO)/(Al_2O_3)=2.5时,随(SiO_2)增加,精炼渣的脱硫率降低。钢液最佳脱硫效果的LF精炼渣组成为:6%～10%(BaO),3.5～4.0(CaO)/(Al_2O_3),8%～12%SiO_2。
The effect of ingredient of LF refining slag series（/%：28.75～58.05CaO,12.50～32.43Al_2O_3,0～15BaO,8～20SiO_2,6MgO,10CaF_2） on desulphurization of high carbon chromium bearing steel GCr15（/%：0.99C, 1.45Cr,0.034S） has been studied by Mo wire high temperature electric resistance furnace and using orthogonal test method. Results shown that as（CaO）/（Al_2O_3） = 2.5 and（SiO_2） = 14%,with increasing（BaO） from 0 to 8%,the desulphurization rate of liquid by refining slag increases,while with increasing（BaO） from 8%to 15%the desulphurization rate decreases;as（BaO） =7.5%and SiO_2=14%,with increasing（CaO）/Al_2O_3,the desulphurization rate by refining slag increases;and as（BaO） =7.5%and（CaO）/（Al_2O_3） =2.5,with increasing（SiO_2）,the desulphurization rate by refining slag decreases.The ingredient of LF refining slag with optimum desulphurization rate of liquid is 6%～10% （BaO）,3.5～4.0（CaO）/（Al_2O_3） and 8%～12%SiO_2.
出处
《特殊钢》
北大核心
2012年第3期15-17,共3页
Special Steel
