On the damage mechanisms in a continuous casting mold: After-service material characterization and finite element simulation

Novak, Jelena Srnec; Lanzutti, A.; Benasciutti, Denis; Bona, Francesco De; Moro, Luciano; Luca, Andrea De

doi:10.1016/j.engfailanal.2018.08.005

Cited by 7 publications

(3 citation statements)

References 15 publications

(45 reference statements)

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“…Steelmaking components are often subjected to thermo-mechanical loads applied cyclically. Typical examples are rolls for hot strip rolling, anodes in electric arc furnaces and molds for continuous casting [24][25][26].…”

Section: First Case Study: Cyclic Softening Materials Behavior and Th...mentioning

confidence: 99%

“…The thermal flux q proposed in [27] was increased by around 50%, so that the mold reached a maximum temperature close to 300 • C. As a consequence, an increase in the amount of plastic strain was obtained. The temperature of the cooling water was 40 • C and the convection coefficient was 48,000 W/m 2 K. As observed in [25], the variation in the thermal flux can be approximated by simulating a sequence of steady-state analyses. A nonlinear solution was carried out to take into account the temperature dependence of thermal properties.…”

Section: Numerical Model Of the Round Moldmentioning

confidence: 99%

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Benchmarks for Accelerated Cyclic Plasticity Models with Finite Elements

Novak

Bona

Benasciutti

2020

Metals

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In numerical simulations of components subjected to low-cycle fatigue loading, the material cyclic plasticity behavior must be modelled until complete stabilization, which occurs approximately at half the number of cycles to failure. If the plastic strain per cycle is small, a huge number of cycles must be simulated, which results into a huge and thus unaffordable simulation time. Acceleration techniques for shortening this time are useful, although their accuracy needs to be checked. This work aims to compare different approaches (nonlinear kinematic with “initial” and “stabilized” parameters and combined nonlinear kinematic and isotropic with the speed of stabilization fictitiously increased). It considers two benchmarks taken from the literature, in which the material has opposite cyclic behaviors (hardening, softening). A plane finite element model can be used in both benchmarks, thus permitting a simulation up to complete stabilization. Results confirm that the common approach of considering only the kinematic model (calibrated on “initial” or “stabilized” material state) from the very first cycle could lead to relevant errors. The acceleration technique based on a fictitious increase in the speed of stabilization leads to accurate results. Guidelines for calibrating this technique on a material’s hardening or softening behavior are, finally, proposed.

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Section: First Case Study: Cyclic Softening Materials Behavior and Th...mentioning

confidence: 99%

Section: Numerical Model Of the Round Moldmentioning

confidence: 99%

Benchmarks for Accelerated Cyclic Plasticity Models with Finite Elements

Novak

Bona

Benasciutti

2020

Metals

Self Cite

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“…Meanwhile, the mechanisms behind the slab/billet features and defects like oscillation marks [17,18], subsurface hooks [19,20], longitudinal off-corner depressions [1,21], surface and subsurface cracks [22] were elucidated by different experimental methods over the past decades. The cracks on different types of moulds were also investigated through a variety of metallographic detections [10,11,23].…”

Section: Introductionmentioning

confidence: 99%

Heat transfer behaviour of funnel mould copper plates during thin slab continuous casting and channel structure optimization

Niu

Cai

Zhu

2019

Ironmaking & Steelmaking

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The heat transfer in funnel mold during thin slab continuous casting is rather complex and sensitive that the flow and temperature of cooling water as well as the roughness of channel walls may have significant influences on it. Herein, a 3-D heat transfer model of funnel copper plates coupling with the flow of cooling water in the channels was developed with the consideration of the fluid-solid interaction. The results show that the interfacial heat flux between the copper plate and cooling water decreases significantly with the increase of distance from channel root, and the temperature distribution of mold lower part is more uneven than that of the upper part. According to the magnitude and distribution of mold temperature, structure of mold copper plates like fillet radius and depth of concave channel, length of circular channels in wide face and roughness of channel wall were optimized.

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Corrosion and Wear Resistance of HVOF-Sprayed Ni-Cr-Co Multi-principal Element Alloy Coating on Copper Plate

Huang,

Xu,

et al. 2024

J Therm Spray Tech

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On the damage mechanisms in a continuous casting mold: After-service material characterization and finite element simulation

Cited by 7 publications

References 15 publications

Benchmarks for Accelerated Cyclic Plasticity Models with Finite Elements

Benchmarks for Accelerated Cyclic Plasticity Models with Finite Elements

Heat transfer behaviour of funnel mould copper plates during thin slab continuous casting and channel structure optimization

Corrosion and Wear Resistance of HVOF-Sprayed Ni-Cr-Co Multi-principal Element Alloy Coating on Copper Plate

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