东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (10): 1118-1121.DOI: -

• 论著 • 上一篇    下一篇

AlMnCa合金脱氧和非金属夹杂物控制技术

战东平;张慧书;李术川;姜周华;   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-10-15 发布日期:2013-06-23
  • 通讯作者: Zhan, D.-P.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金与上海宝钢集团公司联合资助项目(50174012).

Steel deoxidation and non-metallic inclusion control using AlMnCa alloy

Zhan, Dong-Ping (1); Zhang, Hui-Shu (1); Li, Shu-Chuan (1); Jiang, Zhou-Hua (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-10-15 Published:2013-06-23
  • Contact: Zhan, D.-P.
  • About author:-
  • Supported by:
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摘要： 在1873K下,MoSi2电阻炉内用70mm×100mmMgO坩埚和AlMnCa合金开展了3炉低碳低硅钢脱氧实验.结果表明,用1#AlMnCa脱氧后,钢中溶解氧和全氧含量均较低,终点全氧质量分数为37×10-6.用AlMnCa脱氧后钢中夹杂物大部分为球形的含有CaO的复合夹杂物.用AlMnFe脱氧后,钢中主要是Al2O3或Al2O3-MnO等构成的复合夹杂物,其形状仅有少量为球形.实验终点钢中89.1%的夹杂物尺寸小于10μm,无大于50μm的夹杂物.用1#AlMnCa在25t转炉上进行了6炉TGD07钢脱氧工业试验,脱氧后钢中氧质量分数平均为23.8×10-6,最低达到8×10-6.与未用...

关键词: 炼钢, 脱氧, AlMnCa合金, 夹杂物, 低碳钢, 低硅钢

Abstract: Experiments for deoxidation of low-carbon and low-silicon steel and control of non-metallic inclusion were done for 3 heats at 1873 K in a φ70 mm × 100 mm MgO crucible put into MoSi2 resistance furnace, with AlMnCa alloy used as deoxidant. The results showed that after deoxidized with 1# AlMnCa alloy, the dissolved oxygen and total oxygen content in the steel are both the lowest and the endpoint total oxygen is 37 × 10-6, and most inclusions in the steel are spherical CaO-containing compounds. However, after the steel was deoxidized by AlMnFe alloy, most inclusions are Al2O3 or Al2O3-MnO compounds among which only a small part is spherical. In the final steel 89.1% of inclusion size is less than 10 μm with none bigger than 50 μm. Then, 6 heats of industrial deoxidation tests for TGD07 steel were done in an 25 t LD converter with 1# AlMnCa alloy, and the results showed that the mean oxygen content in molten steel is 23.8 × 10-6 even down to 8 × 10-6. The average yield strength, tensile strength and elongation percentage of the test steel are increased by 19.2 MPa, 26.2 MPa and 0.55%, respectively, compared with that of the not test steel.

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