A thermomechanical model for simulation of carbon steel solidification in mould in continuous casting

2003 ◽  
Vol 30 (4) ◽  
pp. 265-272 ◽  
Author(s):  
A. Marcandalli ◽  
C. Mapelli ◽  
W. Nicodemi
Keyword(s):  
Carbon Steel ◽  
Continuous Casting ◽  
Thermomechanical Model

scholarly journals Mechanical property of lotus-type porous carbon steel fabricated by continuous casting method

2009 ◽  
Vol 165 ◽  
pp. 012071
Author(s):  
Y Kawamura ◽  
S Suzuki ◽  
S-Y Kim ◽  
H Nakajima ◽  
M Kashihara ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Carbon Steel ◽  
Continuous Casting ◽  
Porous Carbon ◽  
Casting Method

Inclusions, lining materials and nozzle clogging during middle carbon steel billet continuous casting process

2008 ◽  
Vol 105 (2) ◽  
pp. 72-79 ◽  
Author(s):  
Shihong Liu ◽  
Xinhua Wang ◽  
Xiangjun Zuo ◽  
Yufeng Wang ◽  
Lifeng Zhang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Continuous Casting ◽  
Casting Process ◽  
Continuous Casting Process ◽  
Nozzle Clogging ◽  
Steel Billet ◽  
Billet Continuous Casting

Numerical Modeling of Diffusion Boundary Layer in Strip Casting Process of Carbon Steel

2000 ◽  
Author(s):  
A. V. Kuznetsov
Keyword(s):  
Boundary Layer ◽  
Carbon Steel ◽  
Continuous Casting ◽  
Casting Process ◽  
Strip Casting ◽  
Diffusion Boundary Layer ◽  
Valuable Insight ◽  
Continuous Casting Process ◽  
Diffusion Boundary ◽  
Flat Steel

Abstract This paper is aimed at the investigation of the diffusion boundary layer near the cooled casting surface encountered in the horizontal continuous casting process of carbon steel. The strip casting process is a relatively new continuous casting process. This process makes it possible to produce high-quality flat steel products directly, without using hot rolling. This explains why this process is very attractive for industry. Extensive numerical simulations under equilibrium and nonequilibrium assumptions provide valuable insight into the physics of diffusion boundary layer.

The Mould Flux Heat Conduction Performance Designing of High Carbon Steel for Thin Slab Continuous Casting

2014 ◽  
Vol 1033-1034 ◽  
pp. 1313-1316
Author(s):  
Hui Rong Li ◽  
Li Gen Sun ◽  
Li Qun Ai
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Carbon Steel ◽  
Continuous Casting ◽  
Orthogonal Experiment ◽  
High Carbon Steel ◽  
Thin Slab ◽  
High Carbon ◽  
Slab Continuous Casting ◽  
Mould Flux

Heat transfer of the mould flux between the mould and the strand is very complicated, especially for the high carbon steel thin slab continuous casting. In this research the orthogonal experiment has been carried out, and the results showed that: the effect for the heat flux form strong to weak is: R>Na2O>F>MgO>BaO. and in the experiment range, with the R increasing, when the R, Na2O content and the F- content are increasing, the heat flux would be decreasing; with the MgO content increasing, the crystallization temperature would getting fluctuant; with the BaO content increasing, the heat flux would getting fluctuant, when its content is around 6%, the heat flux is reach its summit.

Ultrasonic Transmission Characteristics of Continuous Casting Slab for Medium Carbon Steel

2005 ◽  
Vol 297-300 ◽  
pp. 2201-2206
Author(s):  
Jun Youn Lee ◽  
Soon Bok Lee ◽  
Jae Kyung Yi
Keyword(s):  
Carbon Steel ◽  
Continuous Casting ◽  
Surface Defects ◽  
Medium Carbon Steel ◽  
Carbon Steels ◽  
Ultrasonic Waves ◽  
Transmission Characteristics ◽  
Medium Carbon ◽  
Continuous Casting Slab ◽  
On Line

Until now, surface defects of continuous casting slab have been removed by the enforced surface scarfing to produce high quality steel materials. An evaluation technique for surface and internal defects of slab is required to enhance the production of medium carbon steels and acquire defect-map. Accordingly as a preliminary step, longitudinal wave testing and Rayleigh wave testing were carried out on slab specimens of medium carbon steel to get basic transmission characteristics of ultrasonic waves. This research provides as basic data for on-line defect estimation using a laser ultrasonic or EMAT in non-contact ultrasonic detecting techniques in future.

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.

Analysis of Thermomechanical Behavior in Continuous Casting Mould and Design of Breakout Prediction System

2012 ◽  
Vol 463-464 ◽  
pp. 205-209
Author(s):  
Yi Wang ◽  
Xin Jian Ma
Keyword(s):  
Heat Transfer ◽  
Continuous Casting ◽  
Surface Temperature ◽  
Dynamic Characteristics ◽  
Casting Process ◽  
Thermomechanical Behavior ◽  
Prediction System ◽  
Thermomechanical Model ◽  
Continuous Casting Mould

By measuring the surface temperature of the mould, the condition of solidified shell can be monitored by thermocouples fixed to the mould. Breakouts can be predicted and effectively avoided by monitoring the dynamic characteristics of thermocouples temperature in the casting process. A thermomechanical model was developed to analyzed the heat transfer in the mould.The breakout prediction system of continuous casting has been analyzed with consideration of the principles, model and thermocouples installation. The system has been designed and implemented in the steel plants.

scholarly journals Analysis of the Influence of Segmented Rollers on Slab Bulge Deformation

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 231 ◽  
Author(s):  
Qin Qin ◽  
Ming Li ◽  
Jianlin Huang
Keyword(s):  
Continuous Casting ◽  
Three Dimensional ◽  
Dynamic Contact ◽  
Thermomechanical Model ◽  
Continuous Casting Slab ◽  
Roller Diameter

The bulge deformation of the continuous casting slab must be controlled in order to improve the slab quality. In this study, a coupled three-dimensional thermomechanical model is suggested based on dynamic contact between the slab and the rollers, so as to investigate the influence of the rollers in reducing slab bulge deformation. Moreover, the rigid casting rollers in this model are replaced by elastic casting rollers in order to improve the calculation accuracy. Further, the influence of two-segment and three-segment rollers on the slab bulge deformation is systematically studied. The results indicate that the bulge deformation of the slab increased by 74.3% when elastic casting rollers were adopted instead of rigid casting rollers. This deformation was reduced by 29.7% when three-segment rollers were used instead of two-segment rollers. Moreover, the influence of the roller spacing and the roller diameter of the segmented roller on the deformation was studied in detail. In order to achieve the purpose of controlling the bulge deformation, improved segmented roller spacing and diameter were proposed, leading to a 75.4% reduction in the bulge deformation.

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