scholarly journals Mold Flux for High Speed Continuous Casting of Hypoperitectic Steel Slabs

2002 ◽  
Vol 88 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Masahito HANAO ◽  
Masayuki KAWAMOTO ◽  
Masashi HARA ◽  
Toshihiko MURAKAMI ◽  
Hirohisa KIKUCHI ◽  
...  
2006 ◽  
Vol 103 (2) ◽  
pp. 82-88 ◽  
Author(s):  
M. Hanao ◽  
M. Kawamoto ◽  
T. Murakami ◽  
H. Kikuchi

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1165
Author(s):  
Jie Yang ◽  
Dengfu Chen ◽  
Fengting Qin ◽  
Mujun Long ◽  
Huamei Duan

High casting speed coincides with the development trend of billet continuous casting, which significantly changes the casting characteristics. A mathematical model of the billet mold, which includes multiphase fluid flow, transient heat transfer, and solidification during ultra-high speed of the casting process was developed. The model is first applied to investigate the flow field of molten steel in the mold, studying the influence of steel flow upon the melting and flowing behavior of mold flux. The temperature and velocity distributions of the flux pool that formed above the molten steel surface are described. A parametric study on the melting temperature and viscosity of mold flux on liquid flux thickness and flow velocity is then carried out. Finally, the model is used to derive the relationship between interfacial tension and level fluctuations. The predictions provide an improved understanding of the melting and flowing behavior of mold flux in the billet mold and give the guidance for the design and optimization of mold flux for ultra-high speed of billet casting.


2002 ◽  
Vol 99 (4) ◽  
pp. 367-372 ◽  
Author(s):  
M. Hara ◽  
H. Kikuchi ◽  
M. Hanao ◽  
M. Kawamoto ◽  
T. Murakami ◽  
...  

2019 ◽  
Vol 38 (2019) ◽  
pp. 750-759
Author(s):  
Li-Guang Zhu ◽  
Zhi-Peng Yuan ◽  
Ying Xu ◽  
Kai-Xuan Zhang ◽  
Yi-Hua Han

AbstractMost traditional mold fluxes are Newtonian fluids, and their constant viscosity has certain limitations in continuous casting. A new non-Newtonian fluid mold flux with shear-thinning behavior, i.e., a mold flux with a relatively high viscosity at lower shear rates and a relatively low viscosity at higher shear rates, is required to satisfy the mold-flux performance requirements for high-speed continuous casting. The addition of a certain amount of B2O3 to a CaO–SiO2–Na2O-based mold flux can result in a shear-thinning property. To obtain an improved understanding of the mechanism of this characteristic, a molecular-dynamics simulation method was used to study the microstructural changes of the mold flux. Structural changes of mold-flux samples were analyzed and verified by Raman spectroscopy. The results of the two methods were almost the same, both resulted from the addition of B2O3 and changed the microstructure and degree of polymerization of the mold flux, which resulted in the shear-thinning property of the mold flux. This non-Newtonian fluid mold flux was used in square-billet casting tests, and the quality of the slab was improved effectively.


1992 ◽  
Vol 78 (1) ◽  
pp. 113-120 ◽  
Author(s):  
Mikio SUZUKI ◽  
Shinobu MIYAHARA ◽  
Toru KITAGAWA ◽  
Shigetaka UCHIDA ◽  
Takashi MORI ◽  
...  

1991 ◽  
Vol 31 (3) ◽  
pp. 254-261 ◽  
Author(s):  
Mikio Suzuki ◽  
Hideaki Mizukami ◽  
Toru Kitagawa ◽  
Kiminari Kawakami ◽  
Shigetaka Uchida ◽  
...  

2011 ◽  
Vol 66-68 ◽  
pp. 185-188
Author(s):  
Hong Ming Wang ◽  
Ting Wang Zhang ◽  
Yong Qi Yan ◽  
Bang Min Song ◽  
Gui Rong Li

According to the rule of non-sinusoidal oscillation of continuous casting mold, a mathematical model was established to study the effects of oscillation parameters on the consumption rate of mold flux. The results indicated that the mold flux consumption rate is remarkably affected by the non-sinusoidal factor. This proves that the non-sinusoidal oscillation of mold contributes to increase the flux consumption. Moreover, the amplitude and frequency of mold oscillation have effects on mold flux consumption rate. The non-sinusoidal oscillation parameters must be optimized.


Sign in / Sign up

Export Citation Format

Share Document