ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2023, Vol. 44 ›› Issue (3): 34-38.DOI: 10.20057/j.1003-8620.2022-00207

• 冶炼与凝固 • 上一篇    下一篇

不同合金化工艺对18Cr超纯铁素体不锈钢精炼过程夹杂物的影响

张建龙, 陈兴润, 程云霞, 李鸿亮, 徐斌, 潘吉祥   

  1. 酒泉钢铁集团宏兴钢铁股份有限公司, 嘉峪关 735100
  • 收稿日期:2022-12-05 出版日期:2023-06-01 发布日期:2023-05-17
  • 通讯作者: 陈兴润
  • 作者简介:张建龙(1983-),男,本科,工程师

Effect of Different Alloying Processes on Inclusions of 18Cr Ultra-pure Ferrite Stainless Steel during Refining Process

Zhang Jianlong, Chen Xingrun, Cheng Yunxia, Li Hongliang, Xu Bin, Pan Jixiang   

  1. Hongxing Iron & Steel Co., Ltd., Jiuquan Iron and Steel Group Corporation, Jiayuguan 735100
  • Received:2022-12-05 Published:2023-06-01 Online:2023-05-17

摘要: 采用试验和热力学计算相结合的方法研究了不同合金化工艺对18Cr超纯铁素体不锈钢精炼过程夹杂物的影响。试验结果表明:18Cr超纯铁素体不锈钢钛合金化前的夹杂物类型为CaO-Al2O3-MgO,钛合金化后夹杂物类型转变为了CaO-Al2O3-MgO-TiOX。铌钛双稳定(Ti:0.181%,Nb:0.147%)合金化后的炉次夹杂物数量密度和夹杂物中TiOX的重量百分比都要低于钛单稳定(Ti:0.324%)的炉次。

关键词: 18Cr超纯铁素体不锈钢, 精炼, 夹杂物, 铌钛双稳定, 热力学计算

Abstract: Effect of different alloying processes on inclusions of 18Cr ultra-pure ferrite stainless steel during refining process were investigated by using industrial experiments and thermodynamic calculations. The results showed that the inclusion type of 18Cr ultra-pure ferrite stainless steel before titanium alloying is CaO-Al2O3-MgO, and the inclusion type changes to CaO-Al2O3-MgO-TiOX after titanium alloying. After titanium alloying, the number density of inclusions and the weight percentage of TiOX in Nb-Ti double stable heats number (Ti: 0.181%, Nb: 0.147%) are lower than those in single Ti stable heats number (Ti: 0.324%).

Key words: 18Cr Ultra-pure Ferrite Stainless Steel, Refining Process, Inclusion, Nb-Ti Double Stable, Thermodynamic Calculation