摘要
为对H13模具钢切削废屑加以回收利用,提高Cr、Mo、V等合金元素的回收率,采用50 t中频感应炉-LF-VD流程对切削废屑进行返回法熔炼H13钢。分析了固化压块和低真空熔化工艺对Cr回收率的影响和CaOBaO复合渣系BaO含量对脱磷效果的影响。结果表明,对废屑进行固化成块处理、采用≤1 333 Pa低真空熔化,可以将废屑中Cr、Mo、V的回收率提高到96%以上,与用未压制的切削废屑熔炼相比,节约熔化时间25 min/炉,在熔化期采用高碱度的CaO-20%BaO复合渣系进行除磷,可以将产品中P含量控制在0.01%。
In order to recover and apply the cutting scrap of die steel H13 and increase the yield of Cr, Mo, V etc al- loy elements, the die steel H13 is melted by return cutting scrap method in 50 t medium frequency induction furnace- LF- VD flowsheet. The effect of curing pressed block and low vacuum mehing process on Cr yield and the effect of BaO content in CaO-BaO compound slag series on dephosphorizing results are analyzed. Results show that with curing pressed block treatment and melting on ≤1 333 Pa low vacuum condition the yield of Cr, Mo and V in cutting scrap increases to more than 96%, as compared with non-using curing pressed block treatment, the melting time decreases by 25 min/heat. During melting period, dephosphorization process is carried out by high basicity CaO-20% BaO compound slag series, the P content in products shall be controlled to 0. 01%.
出处
《特殊钢》
北大核心
2016年第3期31-34,共4页
Special Steel
基金
江苏省科技支撑项目(基于再生资源条件下CrMo钢节约化生产工艺研究)资助(BE2014849)
关键词
H13模具钢
50t中频感应炉
切削废屑
固化成块
低真空熔化
合金回收率
脱磷
Material Index Die Steel H13, 50 t Medium Frequency Induction Furnace, Cutting Scrap, Curing Pressed Block,Melting on Low Vacuum Condition, Yield of Alloys, Dephosphorization
