Progress of Strip Casting Technology for Steel; Historical Developments

Ge, Sa; Isac, Mihaiela; Guthrie, R. I. L.

doi:10.2355/isijinternational.52.2109

Cited by 96 publications

(53 citation statements)

References 33 publications

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“…As alternative, the strip casting could be suggested as a more economic and environmentally friendly way for DP steels production. This technology is already used for carbon steels, silicon steels and stainless steels in industry [17,18]. It allows obtaining several millimetres thick strips directly from molten metals [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…This technology is already used for carbon steels, silicon steels and stainless steels in industry [17,18]. It allows obtaining several millimetres thick strips directly from molten metals [17,18]. Due to this and elimination of many subsequent hot rolling stages required by conventional continuous casting and thin slab casting, the strip casting process has many advantages, such as energy saving and emission reduction, lower capital and operating costs, a smaller and more flexible operating regime, a higher tolerance to a high residual scrap and easy adjustment for different steel grades [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

et al. 2015

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Conventional dual phase (DP) steel (0.08C-0.81Si-1.47Mn-0.03Al wt.%) was manufactured using simulated strip casting schedule in laboratory. The average grain size of prior austenite was 117. ±. 44. μm. The continuous cooling transformation diagram was obtained. The microstructures having polygonal ferrite in the range of 40-90%, martensite with small amount of bainite and Widmanstätten ferrite were observed, leading to an ultimate tensile strength in the range of 461-623. MPa and a corresponding total elongation in the range of 0.31-0.10. All samples exhibited three strain hardening stages. The predominant fracture mode of the studied steel was ductile, with the presence of some isolated cleavage facets, the number of which increased with an increase in martensite fraction. Compared to those of hot rolled DP steels, yield strength and ultimate tensile strength are lower due to large ferrite grain size, coarse martensite area and Widmanstätten ferrite. Abstract: Conventional dual phase (DP) steel (0.08C-0.81Si-1.47Mn-0.03Al wt. %) was manufactured using simulated strip casting schedule in laboratory. The average grain size of prior austenite was 117±44 μm. The continuous cooling transformation diagram was obtained. The microstructures having polygonal ferrite in the range of 40-90 %, martensite with small amount of bainite and Widmanstätten ferrite were observed, leading to an ultimate tensile strength in the range of 461 -623 MPa and a corresponding total elongation in the range of 0.31 -0.10. All samples exhibited three strain hardening stages. The predominant fracture mode of the studied steel was ductile, with the presence of some isolated cleavage facets, the number of which increased with an increase in martensite fraction. Compared to those of hot rolled DP steels, yield strength and ultimate tensile strength are lower due to large ferrite grain size, coarse martensite area and Widmanstätten ferrite. Disciplines Engineering | Science and Technology Studies

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

et al. 2015

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“…These high solidification rates not only reduce as-cast grain sizes, but also significantly reduces the degree of elemental segregation effects within the solidifying metal, leading to improved mechanical properties. 4,5) Various transport phenomena and solidification behavior, for both ferrous and non-ferrous alloys, have been extensively investigated by the researchers at the MMPC. 6) The application of Computational Fluid Dynamics (CFD) has proven to be extremely useful in modeling the HSBC process.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling and Microstructure Analysis of Al–Mg–Sc–Zr Alloy Strips Produced by Horizontal Single Belt Casting (HSBC)

Çelikin

Isac

et al. 2014

ISIJ Int.

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Horizontal Single Belt Casting (HSBC) is a near net shape strip casting technology that will probably gain significant prominence in the coming years. Fluid mechanics and associated heat and mass transfer are important aspects of any continuous casting process, and the HSBC process is no exception.In this study, mathematical models have been developed, using ANSYS FLUENT 14, to assess various aspects of the HSBC process for the Al-Mg-Sc-Zr system. Specific emphasis is placed on a) the effects of substrate surface properties on strip quality, b) liquid metal-air two-phase interactions and meniscus behavior, c) heat fluxes between the metal and substrate, and d) solidification behavior during strip casting.These predictions are validated against experimental casting results. A 5000 series Al-Mg alloy, with added Sc and Zr, shows exceptional potential as a structural material for aerospace and transportation applications. It is also a suitable material to be produced via the HSBC process. Optical microscopy, SEM and EBSD analyses were conducted to compare the potential advantages of casting this alloy via the HSBC process versus conventionally produced Direct Chill Casting.

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“…Near-net-shape casting 1,2) of flat products is one of the true technological adventures that the steel industry has undertaken in the last 30 years. As an important commercial near-net-shape casting technology, thin slab continuous casting (TSCC) process [3][4][5] has been developed rapidly and used widely to reduce production cost and the amount of scrap and improve productivity in steel industry.…”

Section: Introductionmentioning

confidence: 99%

Instability and Periodicity of Asymmetrical Flow in a Funnel Thin Slab Continuous Casting Mold

Liu

Tsukihashi

2015

ISIJ Int.

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Characteristics of the transient turbulent flow in a funnel thin slab continuous casting mold are studied using a large eddy simulation (LES) computational approach. Validations were done through comparison with previous experimental data of the mean velocities and the instantaneous velocities, and good qualitative and quantitative agreements are obtained. The turbulence flow inside the mold consists of various scales vortices; many pronounced large scale vortex structures were clear found inside the mold, containing various small scale vortices between them. The boundary shear flow can separate from the narrow wall and transport vorticity into the interior flow, and then possibly develop into a vortex. The intermittent chaotic vortex formation on both sides of the SEN is found at the meniscus. Three types of vortex phenomena are identified: one big vortex, two vortices and three small vortices. The positions and sizes are different, and the vortexes are located at the low velocity sides adjacent to the SEN. Significant asymmetry is seen in the instantaneous flow in the two halves of the thin slab mold cavity, especially in the lower recirculation zone. The periodical behavior of asymmetric flow inside the liquid pool was identified and characterized. The spectrum of velocities shows that the mean time interval for periodical changeover is 14.28 seconds.

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Progress of Strip Casting Technology for Steel; Historical Developments

Cited by 96 publications

References 33 publications

Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

Mathematical Modeling and Microstructure Analysis of Al–Mg–Sc–Zr Alloy Strips Produced by Horizontal Single Belt Casting (HSBC)

Instability and Periodicity of Asymmetrical Flow in a Funnel Thin Slab Continuous Casting Mold

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