H13模具钢电渣重熔过程Mg的烧损动力学  

KINETIC ANALYSIS OF MAGNESIUM'S LOSS FOR H13 DIE STEEL DURING THE ESR PROCESS

作　　者：宁博[1] 李晶[1] 王亮亮[1] 李勇勇[1] 周朝刚[1] 

机构地区：[1]北京科技大学

出　　处：《河南冶金》2012年第6期13-15,29,共4页Henan Metallurgy

摘　　要：研究了电渣重熔过程,H13模具钢中镁含量变化。结果表明:CaF2-Al2O3-CaO-MgO-SiO2渣系下,重熔过程中Mg的总烧损量达到90%左右,其中50%发生在电极在渣池内熔化阶段;[Mg2+]由渣-钢界面向渣中的传质为Mg烧损的限制性环节;计算得到了CaF2-Al2O3-CaO-MgO-SiO2渣系中[Mg2+]的传质参数为8.36×10-4mm/s。Variation of magnesium content in H13 die steel during the ESR process was studied. Experimental results show that： under the condition of CaF2 - Al2O3 - CaO - MgO - SiO2 slag system, 90% magnesium was lost in ESR process, of which 50 percent magnesium＇s loss occur during the electrode melts in slag pool; The limit step for magnesium loss in the ESR process is that [ Mg2＋ ] ＇s transferring from iron - slag interface to slag, and [ Mg]2＋ mass transfer parame- ter is 8.36 × 10-4mm/s.

关 键 词：Mg 电极 电渣锭 渣动 力学 

分 类 号：TF14[冶金工程—冶金物理化学]