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.
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:
The surface of 300 mm x 360 mm low carbon steel casting bloom produced by using original mold powder [/%: 25. 64 CaO
22. 72SiO
2
5. 69MgO
8.29Al
2
O
3
11. 87 (Na
2
O + K
2
O)
5. 49CaF
2
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
2
F and alkali-earth oxide content on viscosity of mold powder
the optimum ingredient of mold powder [/%: 22. 06CaO
23.
63SiO
2
4. 76MgO
8. 29Al
2
O
3
11. 90 (Na
2
O + K
2
O)
2. 32CaF
2
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.