Nosing thin-walled tubes into axisymmetric seamless reservoirs using recyclable mandrels

Alves, L.M.; Pardal, T.C.D.; Martins, P.A.F.

doi:10.1016/j.jclepro.2010.06.025

Cited by 11 publications

(4 citation statements)

References 20 publications

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“…A manufacturing process able to fabricate Received:3October, 2020, Accepted:6 October, 2020 tubes into small size: seamless and reservoirs. The process was carried out by axial pressing the open ends of a tube against two shaped dies, while providing internal support by a mandrel, until achieving the desired shape of the reservoir Alves et al [4].…”

Section: An Introduction and Literature Surveymentioning

confidence: 99%

Study of Aluminum Tube Cold Nosing Process Into Conical and Hemispherical Dies

Abdelhameed

Alabden

Abdelrahman

et al. 2022

Journal of Advanced Engineering Trends

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Theoretical analysis and finite element method were used to simulate the cold nosing process of commercial purity Aluminum tubes into conical and hemispherical dies. The influences of process parameters, namely initial tube wall thickness, conical semi-die angle and coefficient of friction were investigated. The results of the nosing process were obtained in terms of load-displacement curves, thickness distribution of deformed parts, the nosing ratios and strain distributions. According to these finding, the final shape and defects of the product can also be predicted. Experimental work was carried out to verify the simulation results. A new developed setup design was proposed to improve the product quality. Two adjacent punches were used: one with a front plunger and the other was an outer sleeve to constrain the tube. It could be observed that the load increase with increasing the tube wall thickness, semi die angle and coefficient of friction. The nosing ratio increases as wall thickness increases. Comparison between analytical and FE predictions to the experimental results showed good agreement.

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Section: An Introduction and Literature Surveymentioning

confidence: 99%

Study of Aluminum Tube Cold Nosing Process Into Conical and Hemispherical Dies

Abdelhameed

Alabden

Abdelrahman

et al. 2022

Journal of Advanced Engineering Trends

View full text Add to dashboard Cite

show abstract

“…A manufacturing process able to fabricate tubes into small size: seamless and reservoirs. The process was carried out by axial pressing the open ends of a tube against two shaped dies, while providing internal support by a mandrel, until achieving the desired shape of the reservoir Alves et al [4].…”

Section: Introductionmentioning

confidence: 99%

Study of Aluminum Tube Cold Nosing Process Into Conical and Hemi-Spherical Dies With Different Coefficients of Friction

2020

Journal of the Egyptian Society of Tribology

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Theoretical analysis and finite element method were used to simulate the cold nosing process of commercial purity Aluminum tubes into conical and hemispherical dies. The influences of process parameters, namely initial tube wall thickness, conical semi-die angle were investigated. The effect of surface conditions on the load/displacement curve in the nosing process was investigated. The results of the nosing process were obtained in terms of load-displacement curves, thickness distribution of deformed parts, the nosing ratios and strain distributions. According to these finding, the final shape and defects of the product can also be predicted. Experimental work was carried out to verify the simulation results. A new developed setup design was proposed to improve the product quality. Two adjacent punches were used: one with a front plunger and the other was an outer sleeve to constrain the tube. It could be observed that the load increase with increasing the tube wall thickness and semi die angle. The load increased with increasing the coefficient of friction to overcome friction between the die and tube. The nosing ratio increases as wall thickness increases. Comparison between analytical and FE predictions to the experimental results showed good agreement.

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“…The process has been commonly used to produce necked metal bottles or assemble metal components. It is also possible to use the nosing process for fabricating axisymmetric seamless reservoirs [1]. Moreover, a single-point incremental forming process was used to crimp open-end tubes that can reduce the diameter and is similar to a nosing process [2].…”

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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Nosing thin-walled tubes into axisymmetric seamless reservoirs using recyclable mandrels

Cited by 11 publications

References 20 publications

Study of Aluminum Tube Cold Nosing Process Into Conical and Hemispherical Dies

Study of Aluminum Tube Cold Nosing Process Into Conical and Hemispherical Dies

Study of Aluminum Tube Cold Nosing Process Into Conical and Hemi-Spherical Dies With Different Coefficients of Friction

Forming Limit in the Nosing Process of Micro Copper Cups

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