Esaform 2021 2021
DOI: 10.25518/esaform21.1896
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Numerical and experimental simulation of shrinkage porosity closure during hot rolling of bars

Abstract: Hot rolling of bars issued from continuous-casting aims at refining the material structure and guaranteeing the central soundness of the metallurgical product. The rolling route must be designed to achieve the complete closure of the shrinkage porosity inherent in the continuous casting process. To predict the void evolution, many models exist that can be implemented in the finite element simulation of the process. Nevertheless, these models need parameter adjustments to be adapted to the forming process, the … Show more

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“…However, the above method is easy to cause serious porosity and shrinkage defects in the centre of the billet. The small-size central shrinkage can be closured in the subsequent rolling process, and the large-size defects will be inherited into the rolled products [14]. During the production of oil pipe, the core of the round billet is expanding outward, and the shrinkage defect in the centre of the round billet tends to cause the internal folding of the pipe [15,16].…”
Section: Introductionmentioning
confidence: 99%
“…However, the above method is easy to cause serious porosity and shrinkage defects in the centre of the billet. The small-size central shrinkage can be closured in the subsequent rolling process, and the large-size defects will be inherited into the rolled products [14]. During the production of oil pipe, the core of the round billet is expanding outward, and the shrinkage defect in the centre of the round billet tends to cause the internal folding of the pipe [15,16].…”
Section: Introductionmentioning
confidence: 99%