|
|
|
| TEMPERATURE DISTRIBUTION ROUND THE MOLTEN SLAG POOL IN THE PROCESS OF ELECTROSLAG REFINING |
| Fu Jie;Chen Chongxi;Chen Enpu;Wang Yong Beijing Institute of Iron and Steel Technology |
|
Cite this article:
Fu Jie;Chen Chongxi;Chen Enpu;Wang Yong Beijing Institute of Iron and Steel Technology. TEMPERATURE DISTRIBUTION ROUND THE MOLTEN SLAG POOL IN THE PROCESS OF ELECTROSLAG REFINING. Acta Metall Sin, 1979, 15(1): 44-50.
|
|
|
Abstract Temperature distribution round the molten slag pool in the process of electro-slag refining has been studied under various industrial conditions. It was found thatthe temperature of the molten slag pool along the radial direction and thatalong the axial direction were uneven. A decreasing temperature gradient was observ-ed along radial direction from eletrode centre to mould wall and along axial directionfrom molten metal pool/slag interface to slag/atmosphere interface. At the slag/atmo-sphere interface the temperature dropped sharply. Under certain experimental condi-tions the change of temperature along the axial direction at the middle of the distancebetween the electrode cylindrical surface and mould wall was found in accordancewith: t=1675 exp(-1.074/l),(5mm≤l≤210mm)where t = the slag temperature, ℃; l=the distance from the slag/atmosphere in-terface, mm. The difference between axial temperatures was greater than 300℃,and the temperature at slag/atmosphere interface was below 1350℃. In the molten slag pool, there existed a "high temperature region" in whichthe temperature distribution appeared to be rather even and its temperature gra-dient was only about 30℃. If the insulation of the mould from its base platewas poor, thus allowing electric current flowing from the mould wall to ingot, thetitanium loss during the electroslag refining of superalloys would be great, becausethe rather high temperature at the slag/atmosphere interface rendered the admis-sion of a greater amount of oxygen as well as promoted a more rapid transferof chemical reactants and products.
|
|
Received: 18 January 1979
|
[1] (1963) , 9．
[2] Wolfenbuttel, H. M. und Hanau, M. W., Arch. Eisenhuettenw., 44 (1973) , 19．
[3] Paton, B. E., et al., Int. Iron Steel Congress 1974, Vol. Ⅲ, 4, Special Metallurgical Treatment of Highgrade Steels, 4． 2． 2． 6．
[4] 川上正博,铁钢,62(1976) ,117．
[5] 川上正博,铁钢,63(1977) ,99．
[6] Mitchell, A. et al., Electroslag Refining. The Iron and Steel Institute, London, 1973, 3．
[7] Fraser, M. E. and Mitchell, A., Ironmaking Steelmaking, 3 (1976) , 279．
[8] (1963) , 94．2 |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
