Metal flow and temperature in direct extrusion of large-size aluminum billets

Valberg, Henry; Costa, André L. M.

doi:10.1063/1.5034854

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…A finer FEM-mesh than elsewhere in the billet was used on the material in the back-end corner of the billet, in front of the die edge and in the bearing. More details about the simulation model and the extrusion process is given in a previous article 8 .…”

Section: Fem-model Of the Extrusion Processmentioning

confidence: 99%

The hot spot in Al-rod extrusion investigated by FEM-analysis

Valberg¹,

Lefstad

Costa

2019

AIP Conference Proceedings

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FEM-analysis is applied to study thermo-mechanical conditions in an industrial Al-rod extrusion process using long billets as stock material. In the analysis, focus is on the conditions in the hot spot present inside the metal of the billet material near to the die edge during extrusion. Here the strain-rate and the temperature in the hot zone reaches critical conditions if the extrusion ram speed is set too high. When overcritical conditions exist here, speed cracking will occur in the metal. The Lagrangian version of the software DEFORM 3D is applied to model the process numerically, and it is investigated how the distribution of the temperature as state-variable is predicted in the hot spot and else how inside the billet, and how it depends on the extrusion conditions. Through the analysis, new information on this important issue is achieved.

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Section: Fem-model Of the Extrusion Processmentioning

confidence: 99%

The hot spot in Al-rod extrusion investigated by FEM-analysis

Valberg¹,

Lefstad

Costa

2019

AIP Conference Proceedings

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Advancements in extrusion and drawing: a review of the contributes by the ESAFORM community

et al. 2022

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The present review paper would celebrate the 25 years anniversary of the ESAFORM association by summarizing the studies performed by the delegates of the ESAFORM conference series within mini-symposium “Extrusion and Drawing” and of the papers published in the International Journal of Material Forming in the same fields. The 160 analyzed papers have been divided in four main categories corresponding to the paper main chapters (Hot Metal Extrusion, Cold Metal Extrusion, Polymer Extrusion and Drawing) then further divided in sub-chapters in order to group them in more specific research subjects. The aim of this review paper is then to provide to the reader a complete overview of the investigated topics and of the research trends over the years within the ESAFORM associate researchers.

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Evaluation of orthogonal strain components in friction extrusion

Reza‐E‐Rabby

Ryan

et al. 2021

Journal of Materials Research and Technology

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Metal flow and temperature in direct extrusion of large-size aluminum billets

Cited by 3 publications

References 6 publications

The hot spot in Al-rod extrusion investigated by FEM-analysis

The hot spot in Al-rod extrusion investigated by FEM-analysis

Advancements in extrusion and drawing: a review of the contributes by the ESAFORM community

Evaluation of orthogonal strain components in friction extrusion

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