An analytical solution for the spread extrusion of shaped sections

Abrinia, Karen; Makaremi, M.

doi:10.1007/s00170-008-1510-9

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…As discussed above, extrusion is a promising technology to produce aluminium stiffened plates and the challenge to be solved is to manufacture much wider integral panels, which can improve the quality of the components and reduce the cost. Many researchers have made progresses in the field of extrusion for wider aluminium panels [25][26][27][28][29], essentially there are two different extrusion methods which have been reviewed in this section.…”

Section: Recent Progress Of Extrusion For Wider Aluminium Panelsmentioning

confidence: 99%

“…Using this extrusion method, panels, whose width is 10% ~ 30% larger than the diameter of cylinder, can be obtained. However, the extrusion force of spread extrusion is higher than that of ordinary extrusion of the same profile [26], so it is difficult to produce thin-walled profiles with large extrusion ratio. It is also difficult to control the material flow by means of spread die and feeder die where the uniform velocity has to be achieved.…”

Section: Spread Extrusionmentioning

confidence: 99%

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Advances on manufacture methods for wide lightweight aluminium stiffened panels

Zhang

Zhou

Shi

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Wide aluminium panels with stiffeners are extensively applied in aviation, bridge and marine structures due to their high stiffness and light-weighting. Many efforts and contributions have been made to overcome the manufacturing difficulties of wide aluminium stiffened panels over years. The aim of this study is to analyse and compare current methods for producing wide stiffened panels for different applications. The manufacturing techniques for stiffened panels such as riveting, welding, machining, additive manufacturing, extrusion, are discussed. Thereinto, extrusion is a very promising technology in the production of wide aluminium stiffened panels as it can efficiently obtain extruded products with high material utilisation, good mechanical properties and structure integrity. Therefore, the methods of widening the stiffened panels in extrusion technology such as spread extrusion and postproduction flattening after extrusion are analysed emphatically. The present study is an attempt to analyse these efforts in order to guide future work in the area of producing much wider aluminium stiffened panels.

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Section: Recent Progress Of Extrusion For Wider Aluminium Panelsmentioning

confidence: 99%

Section: Spread Extrusionmentioning

confidence: 99%

Advances on manufacture methods for wide lightweight aluminium stiffened panels

Zhang

Zhou

Shi

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…Lightweight construction, especially in the area of transportation engineering, is of increasing significance even with decreasing numbers of pieces. But this production technology is quite a lot complicated, and process parameters must be carefully selected so that the desired production quality can be obtained [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Optimization of an aluminum profile extrusion process based on Taguchi’s method with S/N analysis

Zhao

Chen

Guan

et al. 2011

Int J Adv Manuf Technol

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Taguchi's design of experiment and numerical simulation were applied in the optimization of an aluminum profile extrusion process. By means of HyperXtrude, the extrusion process was simulated and the effects of process parameters on the uniformity of metal flow and on the extrusion force were investigated with the signal to noise ratio and the analysis of variance. Through analysis, the optimum combination of process parameters for uniform flow velocity distribution was obtained, with the billet diameter of 170 mm, ram speed of 2.2 mm/s, die temperature of 465°C, billet preheated temperature of 480°C, and container temperature of 425°C. Compared with the initial process parameters, the velocity relative difference in the cross-section of extrudate was decreased from 2.81% to 1.39%. In the same way, the optimum process parameters for minimum required extrusion force were gained, with the billet diameter of 165 mm, ram speed of 0.4 mm/s, die temperature of 475°C, billet preheated temperature of 495°C, and container temperature of 445°C. A 24.7% decrease of required extrusion force with optimum process parameters was realized. Through the optimization analysis in this study, the extrusion performance has been greatly improved. Finally, the numerical results were validated by practical experiments, and the comparison showed that the optimization strategy developed in this work could provide the effective guidance for practical production.

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“…Lightweight construction, especially in the area of transportation engineering, is of increasing significance even with decreasing numbers of pieces [1,2].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and metal flow analysis of hot extrusion process for a complex hollow aluminum profile

Zhang

Zhao

Chen

et al. 2011

Int J Adv Manuf Technol

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The most important way to improve the quality of aluminum profiles is to assure the material flow through die land exit with the same velocity. In this paper, a numerical model was developed to investigate metal flow behavior during aluminum profile extrusion. Firstly, the numerical model for a complex hollow aluminum profile was built based on the arbitrary Lagrangian-Eulerian program HyperXtrude. Then, with the numerical model, metal flow behavior at each stage during the whole extrusion process was analyzed and dead zones in the die cavity were also investigated by means of the particle tracking method. Finally, the numerical results were validated by comparing with the nose ends of two extrudates in practice, and the comparison showed that the numerical model developed in this work could provide the effective guidance for practical production.

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An analytical solution for the spread extrusion of shaped sections

Cited by 12 publications

References 8 publications

Advances on manufacture methods for wide lightweight aluminium stiffened panels

Advances on manufacture methods for wide lightweight aluminium stiffened panels

Optimization of an aluminum profile extrusion process based on Taguchi’s method with S/N analysis

Numerical simulation and metal flow analysis of hot extrusion process for a complex hollow aluminum profile

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