scholarly journals Numerical simulation of different types of voids closure in large continuous casting billet during multi-pass stretching process

2017 ◽  
Vol 207 ◽  
pp. 532-537 ◽  
Author(s):  
Liwen Zhang ◽  
Wenfei Shen ◽  
Chi Zhang ◽  
Qianhong Xu ◽  
Yan Cui
Keyword(s):  
Numerical Simulation ◽  
Continuous Casting ◽  
Different Types ◽  
Stretching Process ◽  
Continuous Casting Billet

scholarly journals Numerical Simulation of Macrosegregation Impurities in the Solidifying Continuous Casting Steel Billet

2018 ◽  
Vol 1 (1) ◽  
pp. 88
Author(s):  
Oleksandr Volodimirovich Hress ◽  
O. B. Isayev ◽  
O. O. Chebotaryova ◽  
Kaiming Wu
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Continuous Casting ◽  
Chemical Compositions ◽  
Quasi Equilibrium ◽  
Alloy Solidification ◽  
Steel Billet ◽  
Impurity Segregation ◽  
Casting Steel ◽  
Continuous Casting Billet

<p>In this study, new theoretical conceptions have been developed about an impurity segregation mechanism at the time of alloy solidification considering present microvolumes with different chemical compositions during alloy solidification. It has been concluded that this conception allows to establish and optimize technologic parameters that influence the production of the main types of macro-heterogeneity. The derived model conceptions have confirmed the final condition of real continuous casting billets by using the advanced analyzing methods. </p><p>Highlights </p><p>· The quasi-equilibrium theory used to study the hardening processes of alloys has been expanded and improved.<br />· The development of a numerical model for macrosegregation impurities in solidifying continuous casting billet is suggested.<br />· The adequacy of the developed model is checked under the industrial conditions using comparison theoretical<br />· calculations and practical data.<br />· The results and developments that are obtained are discussed.</p>

Numerical simulation of Al2O3 deposition at a nozzle during continuous casting

2008 ◽  
Vol 15 (3) ◽  
pp. 227-235 ◽  
Author(s):  
Fangming Yuan ◽  
Xinghua Wang ◽  
Jiongming Zhang ◽  
Li Zhang
Keyword(s):  
Numerical Simulation ◽  
Continuous Casting

scholarly journals Monstars on Glaciers

1983 ◽  
Vol 29 (101) ◽  
pp. 70-77 ◽  
Author(s):  
J. F. Nye
Keyword(s):  
Numerical Simulation ◽  
Strain Rate ◽  
Tensor Field ◽  
Pure Shear ◽  
Glacier Surface ◽  
Isotropic Point ◽  
Different Types ◽  
Isolated Points ◽  
Principal Directions ◽  
Structurally Stable

AbstractIsotropic points are structurally stable features of any complicated field of stress or strain-rate, and therefore will almost always be present on the surface of a glacier. A given isotropic point for strain-rate will belong to one of six different classes, depending on the pattern (lemon, star, or monstar) of principal directions and the contours (ellipses or hyperbolas) of constant principal strain-rate values in its neighbourhood. The central isotropic point on a glacier should theoretically have a monstar pattern, but the contours around it may sometimes be elliptic and sometimes hyperbolic. Nearby, but not coincident with it there will be an isotropic point for stress. This will also have a monstar pattern but, in contrast to the strain-rate point, the contours around it must be hyperbolic. Published examples are consistent with these conclusions. In addition to isotropic points for strain-rate a glacier surface will contain isolated points of pure shear; these also can be classified into six different types. Stable features of this kind give information about the essential structure of a tensor field and form useful points of comparison between observation and numerical simulation.

Simulation to the Temperature Field for Continuous Casting Billet during Direct Rolling of Free-Heating

2014 ◽  
Vol 941-944 ◽  
pp. 1890-1894
Author(s):  
Guang Zheng Luo ◽  
Xin Liu ◽  
Ying Zhi ◽  
Xiang Hua Liu
Keyword(s):  
Heat Transfer ◽  
Finite Element Method ◽  
Finite Element ◽  
Temperature Field ◽  
Continuous Casting ◽  
Transfer Process ◽  
Heat Transfer Process ◽  
Direct Rolling ◽  
Cutting Point ◽  
Continuous Casting Billet

The temperature field of continuous casting billet (CC-billet) is important to carry out the research on direct rolling of free-heating (DROF). The solidification and the heat transfer process of CC-billet from crystallizer to cutting point were studied by finite element method (FEM).The casting speed was improved in order to get reasonable temperature field during DROF.

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