摘要
马钢特钢公司生产GCr15轴承钢的流程为110 t UHP EBT EAF-120 t LF-RH-Φ380~Φ600 mm圆坯连铸工艺。通过控制EAF终点[C]≥0.10%,下渣量≤2.0 kg/t_钢,出钢用铝铁预脱氧;LF终渣(/%):50~60CaO、5~6MgO、8~15SiO_3、15~20Al_2O_3,RH 67 Pa时间≥10 min,连铸结晶器、铸流、凝固末端电磁搅拌等工艺措施,使钢中总氧含量-T[O]≤8×10^(-6),Φ130 mm材中A、B、C、D夹杂物≤1.0级,Ds夹杂0级,满足对产品冶金质量的要求。
The flow sheet for production of bearing steel GCrl5 at Special Steel Co, Masteel is 110 t UHP EBT EAF- 120 t LF-RH-qb380 -qb600 mm round bloom CC process. By using the process measures including controlling EAF end [ C] I〉0. 10% , slagging clown quantity 〈2. 0 kg/t steel, using ferro-aluminium to pre-deoxidize in tapping, LF end refining slag （/%） ： 50 - 60CaO, 5-6MgO, 8 - 15SiO2, 15 - 20A12 03 , RH 67 Pa keeping t〉 10 min and electromagnetic stirring with M-EMS, S-EMS and F-EMS, the total oxygen content in steel T[O] is 〈8 x 10-6 and in qbl30 mm round products the rating of A, B, C and D series inclusions is 〈 1.0, and the rating of Ds series is 0, all meet the requirement on metallura oualitv of products.
出处
《特殊钢》
北大核心
2013年第6期39-41,共3页
Special Steel
