Experimental Investigation of the Tension and Compression Creep Behavior of Alumina-Spinel Refractories at High Temperatures

Teixeira, Lucas Breder; Samadi, Soheil; Gillibert, Jean; Jin, Shengli; Sayet, Thomas; Gruber, Dietmar; Blond, Éric

doi:10.3390/ceramics3030033

Cited by 16 publications

(4 citation statements)

References 14 publications

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“…Specimens of sintered corundum castable were fabricated into the cylinder of /35 mm 9 70 mm. The detail of the creep test can refer to previous research [30,31]. Figure 6 depicts the loaded compressive force of the specimen during creep tests.…”

Section: Creep Test Experimentsmentioning

confidence: 99%

Numerical study of creep effect on purging plug performance under cyclic service

Tan

Jin

et al. 2022

J. Iron Steel Res. Int.

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The service life of the purging plug is one of the fundamental factors that determine the downtime and usage efficiency of the whole ladle. The creep behaviour of the purging plug was thus investigated to identify the possible failure mechanism. At first, the creep parameters of the Norton–Bailey strain hardening rule were inversely identified via the results of the creep test. Then, the thermal-solid coupling model approach was employed to predict the creep behaviour of the purging plug, in which the Norton–Bailey strain hardening rule was applied. The numerical results show that the temperature of the purging plug presents a cyclic trend after the first service period since the preheating temperature is lower than the temperature of molten steel. Furthermore, the distribution of the creep strain intensity in a layered form could also contribute to a gradual spalling of the purging plug end in service. Besides, the creep strain concentration around the slit can be responsible for the clogging of the purging plug.

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Section: Creep Test Experimentsmentioning

confidence: 99%

Numerical study of creep effect on purging plug performance under cyclic service

Tan

Jin

et al. 2022

J. Iron Steel Res. Int.

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“…For the simulations at high temperatures, a viscoplastic solution was chosen, considering the creep effects. The Norton-Bayle creep law was used and the creep parameters were obtained from Samadi et al [9] and Teixeira et al [10]. The load was applied at 0.5 MPa/min and 0.3 MPa/min for the load levels of 5 MPa and 3MPa, respectively.…”

Section: Numerical Modelmentioning

confidence: 99%

Normal and tangential behaviour of dry joints in refractory masonry

Oliveira

Rodrigues

Pereira

et al. 2021

Engineering Structures

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Industrial vessels used in high temperature processes of steel and cement production are protected by refractory linings built with mortarless joints. These dry joints, formed by stacked bricks have a crucial importance on the mechanical behaviour of the lining. The stiffness and consequently the stresses generated by thermal expansion are reduced due to the joints. The present article presents the results of experimental and numerical tests on the thermomechanical behaviour of these joints. The compressive strength of the brick was assessed at ambient and high temperatures and a statistical analysis of the distribution of the bricks' shape imperfections was carried out. Several studies were carried out on the normal behaviour of the joints: classical joint closure test; bed joint closing action in a masonry wallet measured with a DIC; effects of brick's height imperfections on its loadbearing capacity; effects of brick's height imperfections on the wall's behaviour at ambient and high temperatures and a comparison between the bed and head joints behaviour. To characterize the joint's tangential behaviour at high temperatures a novel device was developed and presented.

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“…18,19 The occurrence of creep in refractories and its influence on the behavior in industrial applications has been established in the literature. [20][21][22][23] The working lining of a steel ladle is usually constructed with dry-stacked masonry (mortarless masonry). The joints of such masonry provide a physical break in continuous media, which can reduce the stress build-up.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, understanding the failure mechanisms, as well as thermal and chemical damages of the refractories, becomes essential to optimize their consumption in extreme working environments 18,19 . The occurrence of creep in refractories and its influence on the behavior in industrial applications has been established in the literature 20–23 …”

Section: Introductionmentioning

confidence: 99%

Development and experimental characterization of the thermomechanical behavior of a scaled steel ladle

Gajjar,

Put,

Pereira

et al. 2024

Int J Applied Ceramic Tech

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A steel ladle usually employs mortarless refractory masonry in the innermost layer in direct contact with molten steel. The behavior of such masonry under high thermal loading is complex and essential for designing such installation. A large‐scale experimental campaign was carried out focusing on a simplified, laboratory‐scaled, pilot steel ladle built with multiple refractory linings as in an industrial ladle. Tests were performed under transient thermal loading up to 1400°C with new and used working linings. The results showed that the distribution of temperatures between the refractory linings was similar for all specimens and confirmed the importance of the selection of the refractory materials in the distinct linings of the ladle to limit heat losses. The heterogeneity in the distribution of dry joints and the effect of the dry joint thickness were also measured using strain gauges. The measurements indicate the effect of viscoplasticity in the working lining on the steel shell, which shows a progressive reduction in the strain starting at 1200°C. The tests performed on the working linings show lower strain built‐up due to large viscoplastic deformation and increased joint thickness.

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Experimental Investigation of the Tension and Compression Creep Behavior of Alumina-Spinel Refractories at High Temperatures

Cited by 16 publications

References 14 publications

Numerical study of creep effect on purging plug performance under cyclic service

Numerical study of creep effect on purging plug performance under cyclic service

Normal and tangential behaviour of dry joints in refractory masonry

Development and experimental characterization of the thermomechanical behavior of a scaled steel ladle

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