scholarly journals CFD Model Study of a New Four-Port Submerged Entry Nozzle for Decreasing the Turbulence in Slab Casting Mold

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Debasish Chatterjee
Keyword(s):  
Submerged Entry Nozzle ◽  
Cfd Model ◽  
Casting Mold ◽  
Model Study ◽  
Slab Casting

Measurements of surface velocity and level fluctuation in an actual continuous wide slab casting mold

2017 ◽  
Vol 115 (1) ◽  
pp. 102 ◽  
Author(s):  
Lei Ren ◽  
Lifeng Zhang ◽  
Qiangqiang Wang
Keyword(s):  
Submerged Entry Nozzle ◽  
Time History ◽  
Optical Microscope ◽  
Surface Velocity ◽  
Level Fluctuation ◽  
Narrow Face ◽  
Casting Mold ◽  
Slab Casting ◽  
History Of ◽  
Oscillation Marks

In the current work, a kind of nailboard made of three rows of nails was designed to simultaneously measure the surface velocities and level fluctuations of the loose side, the center plane and the fixed side in an actual continuous wide slab casting mold. Seven nailboard dipping experiments were conducted to obtain both the transient and time-averaged behaviors near the meniscus. The distribution of disturbed oscillation marks (OMs) on the surface of corresponding slabs (in common with nailboard experiments strand) was systematically studied. In order to investigate the relationship between disturbed OMs and entrapment of inclusions or slag to the solidified shell, samples were taken at 10 locations on one relevant slab, and they were polished 2 mm each time. Inclusions larger than 10 µm were analyzed using the optical microscope. The level fluctuates with the continuous casting processing. The level positions on the fixed side and loose side may not be consistent. Surface level near the submerged entry nozzle (SEN) and the narrow face fluctuates on a higher position, while on the region between the SEN and the narrow face, the level fluctuates on a lower position. Time-history of the level fluctuation on the loose side and the centerline is synchronous, while the flow fluctuates in another pace on the fixed side. Root-mean-square (RMS) value of level fluctuation varies along the mold width. There are peak values at the locations near the SEN and narrow face, where slag entrapment may be induced. The OMs are more likely to be disturbed at the middle and 1/4 location in mold width. There is a big difference in entrapment of inclusions at the solidified shell between loose side and fixed side. On the fixed side, the distribution of number density of inclusions is in agreement with number distribution of disturbed OMs on meniscus, while more inclusions were entrapped at narrow faces on the loose side.

scholarly journals Comparison of two methods to study the gas-liquid flows in a continuous slab casting mold

2013 ◽  
Author(s):  
Zhiguo Luo ◽  
Chonglin Liu ◽  
Tao Zhang ◽  
Junjie Sun ◽  
Zongshu Zou ◽  
...  
Keyword(s):  
Casting Mold ◽  
Continuous Slab ◽  
Slab Casting ◽  
Liquid Flows

scholarly journals Numerical Modelling of Metal/Flux Interface in a Continuous Casting Mould / Modelowanie Numeryczne Powierzchni Międzyfazowej Metal/Ciekły Żużel W Krystalizatorze Do Ciągłego Odlewania Stali

2015 ◽  
Vol 60 (4) ◽  
pp. 2905-2912 ◽  
Author(s):  
J. Jowsa ◽  
M. Bielnicki ◽  
A. Cwudziński
Keyword(s):  
Liquid Steel ◽  
Steel Casting ◽  
Liquid Slag ◽  
Submerged Entry Nozzle ◽  
Casting Process ◽  
Continuous Steel Casting ◽  
Research Areas ◽  
Slab Casting ◽  
Metal Flux ◽  
Continuous Casting Mould

The behaviour of liquid slag in the mould is one of the key research areas of the continuous steel casting process. Numerical simulations of steel casting in the mould equipped with submerged entry nozzle, intended for slab casting, have been carried out within the study. For modelling the behaviour of the interfaces of the liquid steel - liquid slag - air system, the VOF method was employed. In the conducted simulations, seven different procedures for the discretization of the interface of individual phases were tested. The computation results have revealed that the “entrapment” of fine slag portions into liquid steel occurs in the system under investigation; the cause of this phenomenon is explicated by the Kelvin-Helmholtz theory.

scholarly journals Mathematical Modeling of Iron and Steel Making Processes. Comparison of Four Methods to Evaluate Fluid Velocities in a Continuous Slab Casting Mold.

2001 ◽  
Vol 41 (10) ◽  
pp. 1262-1271 ◽  
Author(s):  
Brian G. Thomas ◽  
Quan Yuan ◽  
Sivaraj Sivaramakrishnan ◽  
Tiebiao Shi ◽  
S. P. Vanka ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Casting Mold ◽  
Iron And Steel ◽  
Steel Making ◽  
Fluid Velocities ◽  
Continuous Slab ◽  
Slab Casting

scholarly journals Effect of Double Ruler Magnetic Field in Controlling Meniscus Flow and Turbulence Intensity Distribution in Continuous Slab Casting Mold

2016 ◽  
Vol 56 (12) ◽  
pp. 2181-2190 ◽  
Author(s):  
Sandip Sarkar ◽  
Vikas Singh ◽  
Satish Kumar Ajmani ◽  
Ravi Ranjan ◽  
Kalyansundaram Rajasekar
Keyword(s):  
Magnetic Field ◽  
Turbulence Intensity ◽  
Intensity Distribution ◽  
Casting Mold ◽  
Continuous Slab ◽  
Slab Casting
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