10.3969/j.issn.1003-8620.2015.04.008
100t EAF-LF-VD-CC流程冶炼非调质钢49MnVS3的工艺实践
10炉非调质钢49MnVS3(/%:0.46 ~ 0.48C,0.30 ~ 0.40Si,0.88~0.92Mn,0.001 ~0.014P,0.004~0.005S,0.09 ~0.10V,0.19 ~0.22Cr)由100 t EBT DC EAF-LF-VD-260 mm×340 mm坯连铸-Φ140~150 mm材轧制流程生产.采用兑入75%铁水,EAF前期脱磷至≤0.015%P,出钢前[C]为0.20% ~0.30%,精炼时加150 ~ 200kg碳化硅,控制LF精炼渣碱度2.80 ~2.95,(CaO)/(Al2O3)=1.2 ~ 1.6,VD后喂1.5 m/t钙铁线,软吹时间≥15min等工艺措施,49MnVS3钢中[N]、[H]和[O]分别为130×10-6 ~ 220×10-6,1.2×10-6~1.5 × 10-6和5×10-6~11×10-6,成品材晶粒度≥5级,非金属夹杂物和低倍组织均≤1.5级,组织(带状≤1级)和力学性能(Rm803 ~883 Mpa,Rel517 ~590 Mpa,A 16% ~21%,AKU 39 ~99 J)均满足标准要求.
100 t DC EAF-LF-VD-CC流程、非调质钢49MnVS3、工艺实践
36
TH1;TF7
2015-08-21(万方平台首次上网日期,不代表论文的发表时间)
共3页
31-33