脱氧合金化工艺对高铝钢中夹杂物的影响  

Effect of Deoxidation Process on Non-Metallic Inclusion in High Aluminum Steel

作　　者：李丰功[1,2] 战东平[1] 张佩灿[1] 姜周华[1] 王博 张思勋[1,2] 韩文习[1,2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]莱芜钢铁集团公司技术研发中心,山东莱芜271004

出　　处：《中国冶金》2013年第7期21-23,27,共4页China Metallurgy

基　　金：国家自然科学基金(50804009);国家863项目(2012AA03A503);中央高校基本科研业务费项目(N110402013)

摘　　要：在1873K条件下采用Φ70mm×100mm MgO坩埚在MoSi2电阻炉上开展了3炉含1.5%Al的高铝钢脱氧试验。试验炉次获得了较高的脱氧率和较低的终点全氧质量分数。Mn+Nb-Ti-Al-Ca脱氧工艺获得了最高的脱氧率和最低的全氧质量分数,分别为84.1%和0.000 7%。在Al加入钢水中后,夹杂物平均直径和数量均迅速增大。在终点钢中夹杂物均以尺寸为0～3μm的含Al2O3的复合夹杂物为主,大部分夹杂物外围包裹CaS或MnS。Deoxidation and non-metallic inclusion controlling experiments of 3 heats with different deoxidation process at a steel bearing 1.5; Aluminum were done in a MoSi2 furnace with 470 mm×100 mm MgO at 1 873 K. The test heats get the high deoxidation ratio and the low terminal total oxygen content. The maximum deoxidation ratio is 84.1 ; and the minimum total oxygen content is 0. 000 7 ; in the process of Mn_Nb-Ti-Al-Ca. After the a- luminum were put into the molten steel, the diameter and number of the inclusions become bigger. In the terminal steels, most of the inclusions are compound bearing Al2O3, which outside are coated by CaS or MnS. The inclusion diameter are 0 to 3μm.

关 键 词：炼钢 脱氧 夹杂物 高铝钢 氧质量分数 

分 类 号：TF762[冶金工程—钢铁冶金]