Calculation of Temperature and Thermoelastic Stresses in the Backups with Collars of the Unit of Combined Continuous Casting and Deformation in Steel Billet Production. Report 2

A comparative assessment of strenuous state of the anvils with and without channels has been carried out for the installation of combined continuous casting and deformation process in the production of steel sheets for welded pipes. The conditions of operation and loading of the anvils of combined continuous casting and deformation process are described. The design of anvil with channels for water cooling and the nature of its loading are given. Using the algorithm for solving problems in the elasticity theory by finite element method, the laws governing the distribution of axial stresses in anvils from the slab reduction force are determined. Effect of the channels for anvils cooling with water on the magnitude and nature of stresses distribution in them from the stress of the slab reduction was estimated. The calculation results of temperature fields and axial and equivalent thermoelastic stresses in anvils with channels are presented for the production process of steel sheets for welded pipes in a combined continuous casting and deformation unit. The article considers regularities of total stresses distribution in anvils with channels. To assess the effect of anvils structure on their stress state, regularities of distribution of thermoelastic and total stresses in strands without channels have been determined. The graph of dependence of thermoelastic stresses in the anvil on temperature of its contact surface is given. Recommendations for choosing the material of the fighters are given. The advantages and disadvantages of the anvils with channels for the unit for combined continuous casting and deformation are described. The parameters of such a pilot installation are presented. The authors also describe the results of an experimental study of the parameters of a combined process at the manufacture installation for continuous casting and deformation of JSC Ural Pipe Plant.

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Identification of heat transfer coefficients of steel billet in continuous casting by weight least square and improved difference evolution method

Applied Thermal Engineering ◽

10.1016/j.applthermaleng.2016.11.173 ◽

2017 ◽

Vol 114 ◽

pp. 36-43 ◽

Cited By ~ 8

Author(s):

Yang Yu ◽

Xiaochuan Luo

Keyword(s):

Heat Transfer ◽

Continuous Casting ◽

Least Square ◽

Transfer Coefficients ◽

Steel Billet ◽

Heat Transfer Coefficients

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Continuous casting mould for square steel billet optimised by solidification shrinkage simulation

Ironmaking & Steelmaking ◽

10.1179/030192310x12683045806026 ◽

2010 ◽

Vol 37 (5) ◽

pp. 341-346 ◽

Cited By ~ 9

Author(s):

T. M. Wang ◽

S. W. Cai ◽

J. Xu ◽

Y. Y. Du ◽

J. Zhu ◽

...

Keyword(s):

Continuous Casting ◽

Solidification Shrinkage ◽

Steel Billet ◽

Continuous Casting Mould

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Dendrite Growth Characteristics and Segregation Control of Bearing Steel Billet with Rotational Electromagnetic Stirring

High Temperature Materials and Processes ◽

10.1515/htmp-2016-0128 ◽

2017 ◽

Vol 36 (4) ◽

pp. 339-346 ◽

Cited By ~ 2

Author(s):

Yu Xu ◽

Xiu-Jie Xu ◽

Zhuang Li ◽

Tao Wang ◽

An-Yuan Deng ◽

...

Keyword(s):

Continuous Casting ◽

Solidification Process ◽

Bearing Steel ◽

Dendrite Growth ◽

Growth Characteristics ◽

Electromagnetic Stirring ◽

Secondary Dendrite Arm Spacing ◽

Steel Billet ◽

Dendrite Fragmentation ◽

Equiaxed Grain

AbstractThe effects of rotational electromagnetic stirring (R-EMS) on dendrite growth characteristics and segregation control of bearing steel billet were investigated in continuous casting. The results show that applying R-EMS can promote columnar-equiaxed transition, increase the region of the equiaxed grain from 5 % to 45 %, decrease the secondary dendrite arm spacing (SDAS), and reduce the segregation of both carbon and sulfur. Meanwhile, the fragments of dendrite arms induced by R-EMS are observed. The length of the dendrite fragmentation is approximately 1.5 mm, 7–10 times the SDAS. Some fragments can partially remelt to become effective nuclei, and some fragments survive the solidification process.

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Effects of vertical electromagnetic stirring on grain refinement and macrosegregation control of bearing steel billet in continuous casting

Journal of Iron and Steel Research International ◽

10.1016/s1006-706x(17)30073-0 ◽

2017 ◽

Vol 24 (5) ◽

pp. 483-489 ◽

Cited By ~ 9

Author(s):

Yu Xu ◽

En-gang Wang ◽

Zhuang Li ◽

An-yuan Deng

Keyword(s):

Continuous Casting ◽

Grain Refinement ◽

Bearing Steel ◽

Electromagnetic Stirring ◽

Steel Billet

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Modeling of the as-cast structure and macrosegregation in the continuous casting of a steel billet: Effect of M-EMS

Journal of Materials Processing Technology ◽

10.1016/j.jmatprotec.2021.117434 ◽

2021 ◽

pp. 117434

Author(s):

Zhao Zhang ◽

Menghuai Wu ◽

Haijie Zhang ◽

Susanne Hahn ◽

Franz Wimmer ◽

...

Keyword(s):

Continuous Casting ◽

Cast Structure ◽

Steel Billet

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

Materials Physics and Chemistry ◽

10.18282/mpc.v1i1.570 ◽

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

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. Highlights · The quasi-equilibrium theory used to study the hardening processes of alloys has been expanded and improved. · The development of a numerical model for macrosegregation impurities in solidifying continuous casting billet is suggested. · The adequacy of the developed model is checked under the industrial conditions using comparison theoretical · calculations and practical data. · The results and developments that are obtained are discussed.

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