钢精炼过程非金属夹杂物演变与控制
朱苗勇, 邓志银

Evolution and Control of Non-Metallic Inclusions in Steel During Secondary Refining Process
ZHU Miaoyong, DENG Zhiyin
表1 不同钢铁企业不同钢种主要的夹杂物类型[2~19]
Table 1 Main types of inclusions found in different steel grades at different steel plants[2-19]
Steel grade (Remark) Deoxidizer Steel plant Production process Type of inclusion Ref.
GCr15 (Bearing steel) Al - - Al2O3-MgO, [2]
CaO-Al2O3-MgO
803J (Bearing steel) Al OVAKO, Sweden EAF→ASEA-SKF→IC CaO-Al2O3-MgO-CaS [3]
SCM420 (Case hardening steel) Sanyo Steel, Japan EAF→LF→RH→CC CaO-MgO-Al2O3 [4]
SCM435 (Case hardening steel) Al Xingtai Steel, China BOF→LF→RH→CC CaO-Al2O3-MgO [5]
(IF steel) Al - BOF→RH→CC Al2O3 [6]
X70 (Pipeline steel) Al NISCO, China BOF→LF→RH→CC CaO-Al2O3-MgO [7]
X80 (Pipeline steel) Al Shougang, China BOF→LF→RH→CC CaO-Al2O3-MgO [8]
(ULC steel) Al-Ti Tata Steel, India - Al2O3-TiO x [9]
ORVAR2M (Tool steel) Al Uddeholm, Sweden EAF→LF→VD→IC CaO-Al2O3-MgO [10]
20CrMnTi (Gear steel) Al-Ti - BOF→LF→CC CaO-Al2O3-MgO-TiO x [11]
(LCAK steel) Al JISCO, China BOF→LF→CSP CaO-Al2O3-MgO-CaS [12]
LX82A (Tire cord steel) Si-Mn Xingtai Steel, China BOF→LF→CC SiO2-MnO-Al2O3, [13]
CaO-SiO2-Al2O3
LX82A (Tire cord steel) Si-Mn Jiyuan Steel, China BOF→LF→CC SiO2-MnO-Al2O3, [14]
CaO-SiO2-Al2O3
60Si2Mn-Cr (Spring steel) Al - BOF→LF→CC CaO-Al2O3-MgO [15]
(Spring steel) Si-Mn Baosteel, China EAF→LF→VD→CC CaO-SiO2-Al2O3 [16]
SAE 9254 Si-Mn ArcelorMittal, Brazil BOF→LF→CC CaO-SiO2-Al2O3 [17]
U75V (Rail steel) Si-Mn Baotou Steel, China BOF→LF→VD→CC CaO-SiO2-Al2O3 [18]
U71Mnk (Rail steel) Si-Mn - BOF→LF→VD→CC CaO-SiO2-Al2O3-MgO [19]