Numerical simulation of solidification structure of high carbon SWRH77B billet based on the CAFE method

2012 ◽  
Vol 39 (1) ◽  
pp. 26-30 ◽  
Author(s):  
Y Z Luo ◽  
J M Zhang ◽  
X D Wei ◽  
C Xiao ◽  
Z F Hu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Solidification Structure ◽  
High Carbon

Deformation and Structure Difference of Steel Droplets during Initial Solidification

2017 ◽  
Vol 36 (4) ◽  
pp. 347-357 ◽  
Author(s):  
Yang Li ◽  
Jing Wang ◽  
Jiaquan Zhang ◽  
Changgui Cheng ◽  
Zhi Zeng
Keyword(s):  
Carbon Steel ◽  
Continuous Casting ◽  
High Carbon Steel ◽  
Low Carbon Steel ◽  
Carbon Steels ◽  
Solidification Structure ◽  
Low Carbon ◽  
High Carbon ◽  
Peritectic Steel ◽  
Initial Solidification

AbstractThe surface quality of slabs is closely related with the initial solidification at very first seconds of molten steel near meniscus in mold during continuous casting. The solidification, structure, and free deformation for given steels have been investigated in droplet experiments by aid of Laser Scanning Confocal Microscope. It is observed that the appearances of solidified shells for high carbon steels and some hyper-peritectic steels with high carbon content show lamellar, while that for other steels show spherical. Convex is formed along the chilling direction for most steels, besides some occasions that concave is formed for high carbon steel at times. The deformation degree decreases gradually in order of hypo-peritectic steel, ultra-low carbon steel, hyper-peritectic steel, low carbon steel, and high carbon steel, which is consistent with the solidification shrinkage in macroscope during continuous casting. Additionally, the microstructure of solidified shell of hypo-peritectic steel is bainite, while that of hyper-peritectic steel is martensite.

Morphology characteristics of solidification structure in high-carbon steel billet based on fractal theory

2019 ◽  
Vol 54 (19) ◽  
pp. 12851-12862 ◽  
Author(s):  
Jianghai Cao ◽  
Zibing Hou ◽  
Dongwei Guo ◽  
Zhongao Guo ◽  
Ping Tang
Keyword(s):  
Carbon Steel ◽  
Fractal Theory ◽  
High Carbon Steel ◽  
Solidification Structure ◽  
High Carbon ◽  
Steel Billet ◽  
Morphology Characteristics

Influence of Secondary Cooling Mode on Solidification Structure and Macro-segregation Behavior for High-carbon Continuous Casting Bloom

2017 ◽  
Vol 36 (7) ◽  
pp. 741-753 ◽  
Author(s):  
Kun Dou ◽  
Zhenguo Yang ◽  
Qing Liu ◽  
Yunhua Huang ◽  
Hongbiao Dong
Keyword(s):  
Continuous Casting ◽  
Casting Process ◽  
Coupling Model ◽  
Solidification Structure ◽  
Secondary Cooling ◽  
Characteristic Parameters ◽  
High Carbon ◽  
Cooling Mode ◽  
Gcr15 Steel ◽  
Continuously Cast

AbstractA cellular automaton–finite element coupling model for high-carbon continuously cast bloom of GCr15 steel is established to simulate the solidification structure and to investigate the influence of different secondary cooling modes on characteristic parameters such as equiaxed crystal ratio, grain size and secondary dendrite arm spacing, in which the effect of phase transformation and electromagnetic stirring is taken into consideration. On this basis, evolution of carbon macro-segregation for GCr15 steel bloom is researched correspondingly via industrial tests. Based on above analysis, the relationship among secondary cooling modes, characteristic parameters for solidification structure as well as carbon macro-segregation is illustrated to obtain optimum secondary cooling strategy and alleviate carbon macro-segregation degree for GCr15 steel bloom in continuous casting process. The evaluating method for element macro-segregation is applicable in various steel types.

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