Effect of Calcium Treatment on Inclusions in Cold Heading Steel Containing Aluminum

董练德; 陈伟庆; 亓奉友; 李文英; 王广顺

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Effect of Calcium Treatment on Inclusions in Cold Heading Steel Containing Aluminum

更新时间：2026-01-21

- Effect of Calcium Treatment on Inclusions in Cold Heading Steel Containing Aluminum
- Special Steel Vol. 31, Issue 6, Pages: 32-34(2010)
- 作者机构：
  
  1. 北京科技大学冶金与生态工程学院,北京,100083
  2. 青岛钢铁集团公司技术中心,青岛,266043
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：20 May 2010，
  
  Online First：28 October 2022，
  
  Published：28 October 2010
- 稿件说明：
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董练德, 陈伟庆, 亓奉友, et al. Effect of Calcium Treatment on Inclusions in Cold Heading Steel Containing Aluminum[J]. Special Steel, 2010, 31(6): 32-34.
DOI：

董练德, 陈伟庆, 亓奉友, et al. Effect of Calcium Treatment on Inclusions in Cold Heading Steel Containing Aluminum[J]. Special Steel, 2010, 31(6): 32-34. DOI：

摘要

利用扫描电镜对80 t LF钢液喂钙处理前后的冷镦钢SWRCH22A中夹杂物形态和组成的变化进行了分析和研究

对钙处理钢中夹杂物的变性进行了热力学计算。研究表明

SWRCH22A钢液钙处理后夹杂物中的Mn被Ca置换

中间包内钢中Al

夹杂变性生成低熔点铝酸钙夹杂12CaO·7Al

如要钢液钙处理生成易上浮排除的液态12CaO·7Al

夹杂的必要条件是[Al

]

/[Ca

]

≤10.58×10

。

Abstract

The change of morphology and ingredient of inclusions in cold heading steel SWRCH22 A before and after feeding calcium wire in 80 t LF liquid steel has been analyzed and studied by scanning electron microscope

and the thermodynamics calculation for modification of inclusions in steel by calcium treatment is carried out. Research results show that after calcium treatment of liquid steel SWRCH22A the Mn in incdusions is placed by Ca

the inclusion Al

in liquid steel in tundish is modified to form low melting point calcium aluminate 12CaO·7Al

and during calcium treatment of liquid steel the necessary condition to form easily floating up and removing liquid inclusion 12CaO·7Al

is [Al

]

/[Ca

]

≤10.58×10

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