scholarly journals Lubrication Phenomena in a Mold and Optimum Mold Oscillation Mode in High-speed Casting

1986 ◽  
Vol 72 (14) ◽  
pp. 1862-1869 ◽  
Author(s):  
Hideaki MIZUKAMI ◽  
Kiminari KAWAKAMI ◽  
Toru KITAGAWA ◽  
Mikio SUZUKI ◽  
Shigetaka UCHIDA ◽  
...  
Keyword(s):  
High Speed ◽  
Oscillation Mode ◽  
Mold Oscillation ◽  
High Speed Casting

scholarly journals Development of a new mold oscillation mode for high-speed continuous casting of steel slabs.

1991 ◽  
Vol 31 (3) ◽  
pp. 254-261 ◽  
Author(s):  
Mikio Suzuki ◽  
Hideaki Mizukami ◽  
Toru Kitagawa ◽  
Kiminari Kawakami ◽  
Shigetaka Uchida ◽  
...  
Keyword(s):  
Continuous Casting ◽  
High Speed ◽  
Oscillation Mode ◽  
Continuous Casting Of Steel ◽  
Mold Oscillation ◽  
Steel Slabs

scholarly journals Mold Nonsinusoidal Oscillation Mode and Its Effect on Slag Infiltration for Lubrication and Initial Shell Growth during Steel Continuous Casting

Metals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 418 ◽  
Author(s):  
Xiaobo Yan ◽  
Boran Jia ◽  
Qiangqiang Wang ◽  
Shengping He ◽  
Qian Wang
Keyword(s):  
Liquid Film ◽  
Molten Steel ◽  
Liquid Slag ◽  
Shell Growth ◽  
Oscillation Mode ◽  
Quantitative Prediction ◽  
Multiphase Model ◽  
Obvious Effect ◽  
Mold Slag ◽  
Mold Oscillation

The effect of nonsinusoidal oscillation at different modification ratios (α) on slag lubrication was investigated during mold oscillation. A validated and reliable multiphase model was employed, which involved flow and solidification of the molten steel and mold slag. The main results revealed that a large amount of liquid slag at the entrance of the mold–strand channel reflowed into the slag pool at the middle of the negative strip period. The phenomenon was more distinct, with an increase in the modification ratio. The modification ratio had no obvious effect on the average thickness of the liquid film at different depths below the meniscus. A modification ratio of 0.5 caused less fluctuation of the transient liquid film. Quantitative prediction of slag consumption indicated that as the modification ratio increased from 0.2 to 0.5 to 0.8, the average values were 0.278, 0.286, and 0.279 kg/m2, respectively. Shell solidification and growth near the meniscus mainly occurred when the mold was descending, which not only depended on the heat flux, but also on the liquid slag flow, the pressure driven by slag rim, and the mold oscillation. Optimization of the modification ratio of nonsinusoidal oscillation could be an alternative to delay growth of the initial shell towards the molten steel. A modification ratio of 0.5 had the least robust shell tip at the meniscus, thereby reducing entrapment of inclusions and bubbles by the shell tip.

scholarly journals A 1D Analytical Model for Slag Infiltration during Continuous Casting of Steel under Non-Sinusoidal Mold Oscillation

Metals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1389
Author(s):  
Hyunjin Yang
Keyword(s):  
Continuous Casting ◽  
Analytical Model ◽  
Superposition Principle ◽  
Oscillation Mode ◽  
Positive Pressure ◽  
Continuous Casting Of Steel ◽  
Slag Film ◽  
Model Calculations ◽  
Mold Oscillation ◽  
Infiltration Behavior

A 1D analytical model for slag infiltration during continuous casting of steel is developed to investigate the slag behavior in the mold–strand gap. The superposition principle and Fourier expansion are applied to obtain the analytical solution for transient slag flow under arbitrary mold oscillation including non-sinusoidal oscillation mode. The validated model using literature data partially explains several controversies such as slope of slag film channel, mechanism of non-sinusoidal mold oscillation, and timing of slag infiltration. The model shows that a converging slag film into the casting direction is required to open the mold–strand gap if compression is applied in between. Also, model calculations imply that higher slag consumption is achievable from non-sinusoidal mold oscillation by means of the increase of film thickness through longer positive pressure with higher peak pressure. The model demonstrates a time difference between slag flow and pressure near the meniscus and the discrepancy in timing of infiltration between previous works is attributed to the mismatch. The model provides a concise but reliable tool to understand slag infiltration behavior and design mold oscillation settings.

Development of Mold (HS-MOLD) for High Speed Casting

1999 ◽  
Vol 38 (5) ◽  
pp. 337-346 ◽  
Author(s):  
N. Fukada ◽  
Y. Marukawa ◽  
K. Abe ◽  
T. Ando
Keyword(s):  
High Speed ◽  
High Speed Casting
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