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

Donati, Lorenzo; Reggiani, Barbara; Pelaccia, Riccardo; Negozio, Marco; Donato, Sara Di

doi:10.1007/s12289-022-01664-w

Cited by 17 publications

(5 citation statements)

References 142 publications

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“…At the onset of a new ALE step, the material reference mesh system aligns with the computational reference mesh system. In the Lagrangian formulation, nodes move with the material throughout a time increment, while in the Eulerian formulation, nodes remain fixed in space [4,5]. The ALE method offers flexibility by enabling tailored adjustments to the new positions of computational reference mesh nodes, based on specific simulation requirements (Fig.…”

Section: Fem Analysis Of Forward Extrusion Process Hollow Elementsmentioning

confidence: 99%

“…Initially introduced by Hirt et al and subsequently refined by Donea et al, it found its inception in modeling solid-fluid interactions. Over time, its application extended to addressing problems in solid mechanics involving substantial deformations [5,6]. This method has proven to be instrumental in handling scenarios where the interaction between solids and fluids or large deformation mechanics poses challenges for traditional modeling approaches.…”

Section: Introductionmentioning

confidence: 99%

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The Stress Strain Analysis of Forward Extrusion Process of Hollow Elements

Ranđelović,

Vitković,

Blagojević

et al. 2023

Adv.Tech&Mat.

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This paper presents an analysis focused on the stress-strain dynamics within the forward extrusion process for hollow elements. The forward extrusion of hollow elements is characterized by extensive plastic deformation and complex material flow. This process involves splitting the metal continuum, subjecting it to plastic deformation, and merging it into a seamless product with a predetermined cross-sectional shape as it exits the tool. Employing modern numerical finite element methods is essential for designing such processes, as it enables the simulation of metal behavior within the tool. These simulations help predict mechanical parameters within the deformable material continuum, such as stress, strain, temperatures, and strain rates. Additionally, they allow for the optimization of tool designs tailored to the specific product, improving process efficiency and quality. Understanding the stress-strain distribution at individual nodes enables proactive measures to prevent mechanical disruptions within the continuum, ensuring the integrity and quality of the final product—an essential criterion in the forward extrusion process for hollow elements.

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Section: Fem Analysis Of Forward Extrusion Process Hollow Elementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Stress Strain Analysis of Forward Extrusion Process of Hollow Elements

Ranđelović,

Vitković,

Blagojević

et al. 2023

Adv.Tech&Mat.

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show abstract

“…According to [29], sinking velocity gives an indication of how long the pellets would remain floating on water. In this study, the values of the sinking velocity of DBSFL-based extruded pellets within the first 4 h, 8 h and 12 h were significantly lower than those obtained for DFM-based control pellets.…”

Section: Extruder Calibration and Extrudate Physical Property Analysismentioning

confidence: 99%

Physical properties of defatted and extruded black soldier fly (Hermetia illucens) larvae-based aqua-feed using a twin-screw extruder

Edah,

Owolabi

2023

Discov Food

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A twin-screw hot extrusion processing study was performed using defatted black soldier fly larvae (DBSFL) meal as a complete substitute for Danish fishmeal (DFM) in the production of aqua-feed. The defatting process of full-fat black soldier fly larvae (BSFL) reduced its crude fat content by 60%. This was mixed together with other ingredients (soybean meal, cassava flour, vitamin and mineral mix, vitamin C, and anti-mold) to formulate a fish diet containing 40% crude protein. The moisture content of the formulated mixture was 300 g/kg prior to extrusion. The extruder feeder motor speed, main motor speed and cutter motor speed were set at 210, 300 and 700 rpm respectively. Results show a significant increase (P < 0.05) in the crude protein (CP) content of DBSFL meal when compared with full-fat BSFL meal with values of 51.83 ± 0.03 and 47.44 ± 0.2 respectively. However, CP values of the DBSFL meal were significantly (P < 0.05) lower than those obtained for DFM with values of 51.83 ± 0.03 and 72.13 ± 0.18 respectively. The physical properties of extruded floating pellets showed significant differences (P < 0.05) between DFM-based extrudates and DBSFL-based extrudates in terms of expansion ratio (ER), sinking velocity (SV), Unit density (UD), bulk density (BD), and pellet durability. However, no significant differences (P > 0.05) were observed in terms of floatability, moisture content and water absorption index (WAI). It was concluded that, the extrusion of DBSFL-based pellets compared favourably with DFM-based extruded pellets thus, the processing of full-fat BSFL into DBSFL meal makes the latter suitable for extrusion purposes and appropriate in the production of good quality floating feed pellets desired by fish farmers and suitable for feeding fish.

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“…The microstructure of 6XXX aluminum alloy extruded profiles is of primary interest for extrusion companies since it affects the product performances [1,2]. To date, the relationship between process parameters and grain structure evolution is not fully understood due to the high number of factors that affects the final microstructure of the profile.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis and modeling of the recrystallization behaviour of a AA6060 extruded profile

Negozio

2023

Materials Research Proceedings

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Abstract. The microstructure of Al-Mg-Si alloys is gaining nowadays an increasing industrial interest because it influences the strength, crash, corrosion and esthetic properties of the extruded profiles. In order to investigate and predict the recrystallization behaviour in the extrusion of 6XXX aluminum alloys, experimental and numerical activities are still needed. In this work, the extrusion of an industrial-scale AA6060 aluminum alloy hollow profile was carried out. An innovative recrystallization model was developed and optimized by comparing the microstructural data experimentally acquired with the outputs of the simulation performed using the Finite Element commercial code Qform Extrusion. A good correlation between numerical prediction and experimental data was found, thus proving the reliability of the proposed AA6060 recrystallization model.

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

Cited by 17 publications

References 142 publications

The Stress Strain Analysis of Forward Extrusion Process of Hollow Elements

The Stress Strain Analysis of Forward Extrusion Process of Hollow Elements

Physical properties of defatted and extruded black soldier fly (Hermetia illucens) larvae-based aqua-feed using a twin-screw extruder

Experimental analysis and modeling of the recrystallization behaviour of a AA6060 extruded profile

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