Liquid steel flow in continuous casting machine: Modelling and measurement

Date

2011-08-01

Author

Yavuz, Mehmet Metin

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

301
views

0
downloads

Single phase (liquid steel) and two-phase (liquid steel and argon bubbles) three-dimensional computational fluid dynamic and heat transfer models were developed for the continuous casting machines of ArcelorMittal. The computational domains include tundishes, slide gates, submerged entry nozzles and moulds. The effects of buoyancy, tundish design, tundish practices, nozzle design and caster practices on flow structure were investigated. Mathematical modelling is discussed in detail. In addition, submeniscus velocity measurements in the slab caster mould are performed with the method of torque measurement. A consumable probe is inserted into the liquid steel meniscus from the top of the mould through mould powder and slag layer. The liquid steel flow applies a drag force to the probe, which then generates a torque. This torque value is measured and then converted back to velocity. The concept and challenges of the technique are discussed, and the effects of casting parameters on mould flow structure are investigated. Product quality in relation to real time meniscus velocity measurements is also discussed.

Subject Keywords

Mechanical Engineering, Materials Chemistry, Mechanics of Materials, Metals and Alloys

URI

https://hdl.handle.net/11511/39697

Journal

Ironmaking and Steelmaking

DOI

https://doi.org/10.1179/1743281211y.0000000013

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

Acoustic phonons scattering mobility and carrier effective mass in In6S7 crystals Qasrawi, A. F.; Hasanlı, Nızamı (Elsevier BV, 2006-12-21) Systematic dark electrical resistivity and Hall coefficient measurements have been carried out in the temperature range of 170-320 K on n-type In6S7 crystals. The analysis of the electrical resistivity and carrier concentration reveals the intrinsic type of conduction with an average energy band gap of similar to 0.75 eV The carrier effective masses of the conduction and valence bands were calculated from the intrinsic temperature-dependent carrier concentration data and were found to be 0.565m(0) and 2.020...
Annealing improvement on the localized states of plasma grown boron nitride film assessed through admittance measurements ÖZDEMİR, Orhan; Anutgan, Mustafa; Aliyeva-Anutgan, Tamila; Atilgan, Ismail; Katircioglu, Bayram (Elsevier BV, 2009-05-05) Boron nitride (BN) thin film was grown by plasma enhanced chemical vapor deposition (PECVD) technique and was investigated by UV-Visible transmission, Fourier transform infrared (FTIR) and ac conductance spectroscopies. Mainly the density of electronic localized states (D-it) at BN/Si interface was obtained by continuum and statistical models of ac conductance through an MIS structure (Al/BN film/Si). The origins of the electronic defects have been outlined and discussed within the frame of a nitrogen defic...
Size dependent stability and surface energy of amorphous FePt nanoalloy Akdeniz, Mahmut Vedat; Mehrabov, Amdulla (Elsevier BV, 2019-06-05) The effects of particle size (2-6 nm) and temperature (300-2700 K) on the stability and local structural evolutions of amorphous equiatomic FePt bulk/nanoalloys have been investigated by combining Embedded Atom Model (EAM) with classical molecular dynamics (MD) simulation method. The three dimensional (3D) atomic configuration of amorphous FePt NPs by means of Voronoi analysis reveals that, deformed bcc (d-bcc) and icosahedron (d-ico) type structures are most probable local atomic configurations for 2-6 nm ...
Charge transport mechanisms and density of interface traps in MnZnO/p-Si diodes Tascioglu, Ilke; Farooq, W. A.; Turan, Raşit; ALTINDAL, ŞEMSETTİN; YAKUPHANOĞLU, FAHRETTİN (Elsevier BV, 2014-03-25) MnZnO films were grown onto p-Si substrate by sol-gel spin coating method. The electrical properties of the diodes were investigated at room temperature via the current-voltage (I-V), capacitance-voltagefrequency (C-V-f), and conductance-voltage-frequency (G-V-f) methods by considering the effect of the interface trap density (D-it) and series resistance (Rs) of the diodes. The rectifying ratio (RR) values of undoped and Mn-doped ZnO/ p-Si diodes (at +/- 4 V) were found to be 275 and 2031, respectively. Mn ...
Melt instabilities and the effect of surface tension on preventing edge serrations in melt overflow alloy strip casting Kalkanlı, Ali; Braithwaite, Nick (Iron and Steel Institute of Japan, 1998-01-01) Direct casting of metallic strip onto a single rotating chiller is possible by the displacement of liquid metal in a horizontal pouring channel against a vertically moving chiller surface. In the case where of a high liquid/vapour surface tension exists, the liquid cannot be dragged out of the melt pool by momentum transfer. The critical surface tension values for making strip in a series of 304 stainless steels as measured by a modified oscillating droplet technique, values 2.1-1.4 N m(-1). Surface tension...

Citation Formats

M. M. Yavuz, “Liquid steel flow in continuous casting machine: Modelling and measurement,” Ironmaking and Steelmaking, pp. 453–463, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39697.