Cold nosing process modeling and simulation for manufacturing of aluminium conical milk can

Sheu, Jer‐Jia; Su, Hsien-Hsiu

doi:10.1109/ieem.2009.5373025

Cited by 1 publication

(1 citation statement)

References 8 publications

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“…Major factors affecting the nosing process include the geometrical features of the tube and die, the lubrication at the interface between the tube and die, and the ductility and flow behaviour of the tube material [3,4]. To improve the process, some methods including approximate solutions [5], preform design [6], Taguchi method [7], two-stage forming [8], and temperature gradient heating [9] have been developed. However, the size effects cause some issues on transferring the knowledge of metal forming from macroscale to microscale that includes nonhomogeneous materials flow and relatively higher friction [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Forming Limit in the Nosing Process of Micro Copper Cups

Chang

Pan

2019

KEM

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This study used finite element simulations and experiments to investigate the forming limit in the nosing process of micro copper cups, and to establish the limit nosing curves in terms of nosing ratio, die angle, and friction factor. Two-stage processes, including backward extrusion and nosing processes, were considered in simulations and experiments at micro scale. The copper billets with 1 mm diameter and length were backwards extruded to produce the 1 mm diameter cups with 0.1 mm wall thickness. The cups were later used in the nosing processes under different forming conditions. By analysing the results of the nosed cups from the simulations, it is possible to identify the safe and failure forming conditions and establish the limit nosing curves for the nosing process. The simulation results show that the limit nosing ratio increases as the die angle or friction factor decreases. Two predicted results for poor and well lubricated conditions have been examined and are in good agreement with those from experiments. The study not only explores the characteristics of the noise process of copper cups at micro scale but also establishes the limit nosing curves which could be the guidelines for the design of micro metal components.

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