Optimization of Bearing Lengths in Aluminum Extrusion Dies

Mayavaram, Ravisankar S.; Sajja, Udaya K.; Seclì, Carlo; Niranjan, Siju K.

doi:10.1016/j.procir.2013.09.048

Cited by 13 publications

(4 citation statements)

References 4 publications

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“…x Exponential function: (4) x Linear function: (5) x Logarithmic function: (6) x Logarithmic function: (7) where is used to map translational changes of the response surface. The output of a new point is estimated trough the following equation: (8) where the optimal value of the vector is determined through a mathematical model.…”

Section: Surrogate Modelmentioning

confidence: 99%

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Dynamic DOE for porthole die extrusion optimisation

et al. 2016

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Abstract. Extruded profiles are widely used but their design is still difficult. Several parameters have to be considered. This is particularly true when complex geometries, i.e. non-symmetric or hollow profiles have to be obtained. A novel metamodel technique was proposed to define the relationship between input and output process parameters in porthole die extrusion. An iterative dynamic DOE was finally used to improve the accuracy of the model around the most promising area of the process domain.

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Section: Surrogate Modelmentioning

confidence: 99%

“…After the streams welding, the material flows through the bearing orifice, obtaining its final shape. In order to have undistorted profiles, the local lengths of the bearing can be variable along the exit perimeter [6]. Moreover, the bearing length has to be set taking into account grain growth [7] and surface defects [8,9].…”

Section: Introductionmentioning

confidence: 99%

Dynamic DOE for porthole die extrusion optimisation

et al. 2016

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“…14 The researchers indicated that a new mathematical approach could easily optimize the bearing length to avoid distortion in the extruded components. 15 Meanwhile, a new approach was attributed to increasing productivity by optimizing extrusion parameters such as RAM speed and extrusion ratio. 16 The sequential quadratic programming method was used by the researchers to find the best die shape for promoting uniform surface load distribution on the die surface.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical investigation of extrusion load for AA6063/SiC extruded composite billet

Veerasundaram¹,

Kalaichelvan

Ramasamy³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Because of their great strength and stiffness with regard to their weight, extruded sections are commonly utilized as essential parts in many areas. The investigation focuses on experimental and theoretical analysis of cold extruded aluminium composites. Four types of extrusion die configurations, such as 12:8, 2:4, 12:2, and 8:4, were used to obtain the aluminium composite billets. Aluminium with 5 wt% SiC material was used for the fabrication of Ingot. The theoretical models have been used to determine the extrusion load compared with the experimental value. Moreover, the theoretical model is modified to reflect the relative significance of extrusion parameters in the extrusion process and to provide the actual value of the testing process. Also, the modified model was attributed to developing the equation for evaluating the extrusion load in the intermediate process of extrusion for all the types of extrusion die configurations. The experimentally investigated extrusion load has a 0.81% deviation with the modified model and increased with other theoretical models. Surface morphology analysis was carried out for all configurations of extruded billet components and indicated the surface quality of the extruded billet.

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