Effect of Mold Powder on Surface Quality of 300 mm x 360 mm Casting Bloom of Low Carbon Steel and Ingredient Optimization

曾亚南; 孙彦辉; 艾西; 马志飞; 刘瑞宁; 刘泳

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Effect of Mold Powder on Surface Quality of 300 mm x 360 mm Casting Bloom of Low Carbon Steel and Ingredient Optimization

更新时间：2026-01-21

- Effect of Mold Powder on Surface Quality of 300 mm x 360 mm Casting Bloom of Low Carbon Steel and Ingredient Optimization
- Special Steel Vol. 35, Issue 4, Pages: 24-27(2014)
- 作者机构：
  
  1. 北京科技大学冶金与生态工程学院,北京,100083
  2. 河北钢铁集团石家庄钢铁有限责任公司,石家庄,050031
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：09 February 2014，
  
  Online First：03 September 2022，
  
  Published：03 September 2014
- 稿件说明：
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曾亚南, 孙彦辉, 艾西, et al. Effect of Mold Powder on Surface Quality of 300 mm x 360 mm Casting Bloom of Low Carbon Steel and Ingredient Optimization[J]. Special Steel, 2014, 35(4): 24-27.
DOI：

曾亚南, 孙彦辉, 艾西, et al. Effect of Mold Powder on Surface Quality of 300 mm x 360 mm Casting Bloom of Low Carbon Steel and Ingredient Optimization[J]. Special Steel, 2014, 35(4): 24-27. DOI：

摘要

钢厂使用原保护渣[/%:25.64CaO

22.72SiO

5.69MgO

8.29Al

11.87(Na

O+K

5.49CaF

5.10BaO

]

生产的300mm×360 mm低碳钢连铸坯表面易产生网状裂纹。通过分析保护渣润滑性能与铸坯冶金质量之相关性和研究碱度、MgO和Al

对保护渣熔点的影响

CaF

和碱土金属化合物含量对保护渣粘度影响

优化了保护渣的成分[/%:22.06CaO

23.63SiO

4.76MgO

8.29Al

11.90(Na

O+K

2.32CaF

4.18BaO

]

应用结果表明

使保护渣液层的厚度由原保护渣的6~7.5 mm提高到7~10 mm

完全消除了连铸坯的网状裂纹。

Abstract

The surface of 300 mm x 360 mm low carbon steel casting bloom produced by using original mold powder [/%: 25. 64 CaO

22. 72SiO

5. 69MgO

8.29Al

11. 87 (Na

O + K

5. 49CaF

5. 10BaO

]

easily produces network cracks at steel work. With analysis on 由e relativity between mold powder lubricating property and metallurgical quality of casting bloom and study on the influence of basicity

MgO and Al2 03 on melting point of mold powder and the influence of Ca

F and alkali-earth oxide content on viscosity of mold powder

the optimum ingredient of mold powder [/%: 22. 06CaO

23.

63SiO

4. 76MgO

8. 29Al

11. 90 (Na

O + K

2. 32CaF

4. 18BaO

]

is defined. The application results show that as the thickness of liquid slag layer increases to 7 ~ 10 mm from original slag 6 ~ 7. 5 mm

the casting bloom surface network is completely eliminated.

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