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 ›› 2012, Vol. 33 ›› Issue (4): 10-12.

• 试验研究 • 上一篇    下一篇

渣成分对冶炼28MnCr5齿轮钢时CaO-SiO2-Al2O3 -MgO 精炼渣系熔点的影响

梁娜1, 吴德发2, 翟正龙1, 张利平1   

  1. 莱芜钢铁集团有限公司1特钢事业部;2宽厚板厂，莱芜271104
  • 收稿日期:2012-01-13 出版日期:2012-08-01 发布日期:2022-10-13
  • 作者简介:梁 娜(1982-),女，硕士，工程师,2007年昆明理工大学毕 业，特殊钢的工艺技术及产品开发。

Effect of Slag Ingredient on Melting Point of CaO-SiO2 -Al2O3 -MgO Refining Slag Series for Gear Steel 28MnCr5 Steelmaking

Liang La, Wu Defa, Zhai Zhenglong1, Zhang Liping#br# #br#   

  1. (1 Special Steel Division； 2 Heavy Plate Plant, Laiwu Iron and Steel Group Co Ltd, Laiwu 271104)
  • Received:2012-01-13 Published:2012-08-01 Online:2022-10-13

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摘要： 以28MnCr5齿轮钢(/%:0.28C、0.09Si、0.70Mn、0.015P、0.027S、0.95Cr)50 t电弧炉-LF-VD的生产过程为对象,利用热力学计算软件FactSage,研究CaO-SiO2-Al2O3-MgO精炼渣系中不同成分比例对其熔点的影响,找出最佳的比例使夹杂物控制在低熔点区域,以便于去除。结果表明,(CaO)/(SiO2) ≤1时,低熔点区域占总相图面积的百分比较大;当CaO含量为30%时,低熔点区域占总相图面积的百分比达到所有的最大值,为53.2%;4组元最佳配比为(%)30CaO-30SiO2-25Al2O3-15MgO。

Abstract: Based on the process of 50 t EAF-LF-VD for gear steel 28MnCr5 (/% : 0. 28C, 0. 09Si, 0. 70Mn, 0. 015P, 0. 027S, 0. 95Cr) , the effect of proportion of each ingredient in slag on melting point of CaO-SiO2-Al2O3-MgO refining slag series has been studied by using thermodynamic calculation software FactSage, to get optimum proportion of ingredients in order to control the inclusions in low melting point region and remove out. Results show that as (CaO) / ( SiO2) W 1, the percentage of low melting point region to whole phase diagram area is larger and as CaO content in slag ( CaO) is 30%, the percentage of low melting point region to whole phase diagram area is maximum i. e. 53. 2% ； the optimum ingredient of quaternary refining slag series is (/%) 30CaO-30SiO2-25Al2O3-15MgO.

Key words: Gear Steel 28MnCr5, Refining Slag, Phase Diagram, Low Melting Point

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