摘要
针对某钢厂生产的汽车大梁钢的工艺流程(BOF→LF精炼→连铸),分析了各工序以及铸坯中T[O]、T[N]和显微夹杂物的类型、来源、数量及组成。结果表明,稳态铸坯中T[O]=25×10^(-6),T[N]=27×10^(-6),显微夹杂的数量为7个/mm^2,显微夹杂类型主要有:CaS-Al_2O_3类夹杂、Al_2O_3类夹杂、CaO-Al_2O_3类夹杂;粒度分别在4～10μm、1～10μm、1～100μm之间,含量分别为60%、35%、5%。
The type, source, quantity arid composition of T [O], T [N] and micro-inclusions in each process and slab were analyzed according to the technological process of automobile beam steel produced by a steel plant （BOF, LF refining and continuous casting）. The results show that the steady state slab of T [O]=25 ×10^-6, T [N]=27 ×10^-6, the number of micro-inclusions is 7 mm^-2, micro-inclusion types mainly include CaS-Al2O3, Al2O3 and CaO-Al2O3 inclusions. The inclusions sizes are between 4-10μm, 1-10μm, 1-100 μm, and the content are 60%, 35%, 5%, respectively.
作者
么洪勇
张彩军
刘善喜
王欣
项有兵
YAO Hongyong1, ZHANG Caijun2, LIU Xishan1, WANG Xin1, XIANG Youbing1(1. NO.2 Steel Making and Rolling Plant ofHBIS Tangsteel Company, Tangshan 063000, China; 2. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063000, Chin)
出处
《铸造技术》
CAS
2018年第3期546-549,557,共5页
Foundry Technology
关键词
大梁钢
显微夹杂物
粒度
girder steel
micro-inclusions
particle size
