Investigation on the Effects of Ladle Change Operation and Tundish Cover Powder on Steel Cleanliness in a Continuous Casting Tundish

2021 ◽  
Author(s):  
Rui Xu ◽  
Haitao Ling ◽  
Haijun Wang ◽  
Lizhong Chang ◽  
Shengtao Qiu
Keyword(s):  
Continuous Casting ◽  
Steel Cleanliness ◽  
Continuous Casting Tundish ◽  
Change Operation

Mechanism of fluid flow in a continuous casting tundish with different turbo-stoppers

2001 ◽  
Vol 72 (11-12) ◽  
pp. 466-476 ◽  
Author(s):  
Hans-Jürgen Odenthal ◽  
Ralf Bölling ◽  
Herbert Pfeifer ◽  
Jörg-Friedrich Holzhauser ◽  
Franz-Josef Wahlers
Keyword(s):  
Fluid Flow ◽  
Continuous Casting ◽  
Continuous Casting Tundish

scholarly journals Fluid Flow in A Four-strand Bloom Continuous Casting Tundish with Different Flow Modifiers

2007 ◽  
Vol 47 (1) ◽  
pp. 88-94 ◽  
Author(s):  
Liangcai Zhong ◽  
Baokuang Li ◽  
Yingxiong Zhu ◽  
Rengui Wang ◽  
Wenzhong Wang ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Continuous Casting ◽  
Continuous Casting Tundish

scholarly journals Influence of Plasma Heating on the Metallurgical Effects of a Continuous Casting Tundish

Metals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1438
Author(s):  
Maolin Ye ◽  
Mengjing Zhao ◽  
Sai Chen ◽  
Shufeng Yang ◽  
Jingshe Li
Keyword(s):  
Continuous Casting ◽  
Molten Steel ◽  
Plasma Heating ◽  
Temperature Drop ◽  
Casting Process ◽  
Before And After ◽  
Continuous Casting Tundish ◽  
Product Homogeneity ◽  
Stable Degree ◽  
Unstable Product

Steel products have experienced long-standing problems such as unstable product quality and low product homogeneity. In the continuous casting process, realizing constant-temperature pouring is an effective way to improve product homogeneity. Plasma heating can compensate for the temperature drop during casting with a tundish and maintain a stable degree of superheating of the molten steel in the tundish. Plasma heating has a certain impact on the cleanliness of the molten steel and on the tundish covering flux in the tundish while compensating for the temperature drop. This paper uses SEM-EDS, XRD and FactSage to analyze the cleanliness of molten steel and the characteristics of the tundish covering flux before and after plasma heating. The results show that the number density of inclusions in the tundish is significantly lower after heating, improving the floating removal of small-sized inclusions; after heating, the surface morphology of the tundish covering flux sample appears transparent and glassy, with uniform morphology. XRD results show that the tundish covering flux after plasma heating exhibits no crystal precipitation and is amorphous and that there is a certain regularity before and after heating; there are no obvious changes in the composition of the tundish covering flux in the liquid phase area.

scholarly journals Study of the Influence of Intermix Conditions on Steel Cleanliness

Metals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 852 ◽  
Author(s):  
Branislav Bul’ko ◽  
Marek Molnár ◽  
Peter Demeter ◽  
Dana Baricová ◽  
Alena Pribulová ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Negative Impact ◽  
Cast Steel ◽  
Continuous Casting Machine ◽  
Casting Machine ◽  
Chemical Compositions ◽  
Negative Effect ◽  
Type Size ◽  
Steel Cleanliness ◽  
Steel Grades

Modern steel plants produce today a large portfolio of various steel grades, many for end-uses demanding high quality. In order to utilize the maximum productivity of the continuous-casting machine, it is sometimes necessary to cast steel grades with different chemical compositions in one sequence. It is important, therefore, to know the possibilities of a specific continuous-casting machine to make the Intermix connections as short as possible. Any interference with established procedures may, however, have a negative impact on the cleanliness of the cast steel. Using physical and numerical simulation tools, it was found that reducing the steel level in the tundish during the exchange of ladles makes it possible to shorten the transition zone. However, when the steel level is reduced, the flow of steel is impaired, which can have a negative effect on the cleanliness of the cast steel and, in extreme cases, may even lead to entrapment of slag in the mold. The cleanliness of cast steel was evaluated using one of the most advanced tools for automatic steel cleanliness evaluation, AZtecFeature (Oxford Instruments, Abingdon, UK), which enables determination of the type, size, distribution, and shape, as well as the chemical composition, of individual types of non-metal inclusions.

scholarly journals The Physical and Mathematical Modelling of Continuous Casting Tundish System.

1999 ◽  
Vol 39 (6) ◽  
pp. 524-547 ◽  
Author(s):  
Dipak Mazumdar ◽  
Roderick I. L. Guthrie
Keyword(s):  
Continuous Casting ◽  
Mathematical Modelling ◽  
Continuous Casting Tundish

scholarly journals Erratum to: A Mathematical Modeling Study of Tracer Mixing in a Continuous Casting Tundish

2015 ◽  
Vol 46 (6) ◽  
pp. 2721-2721
Author(s):  
Chao Chen ◽  
Lage Tord Ingemar Jonsson ◽  
Anders Tilliander ◽  
Guoguang Cheng ◽  
Pär Göran Jönsson
Keyword(s):  
Mathematical Modeling ◽  
Continuous Casting ◽  
Continuous Casting Tundish ◽  
Modeling Study
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