Rotary Swaging Forming Process of Tube Workpieces

Zhang, Qi; Jin, Kaiqiang; Dong, Mengyao; Ma, Peijun; Tian, Jin

doi:10.1016/j.proeng.2014.10.330

Cited by 31 publications

(23 citation statements)

References 7 publications

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“…У роботі Qi Zhang [3] встановлено, що кування труби без оправки сприяє інтенсивному заковуванню отвору і мінімальному подовженню пустотілої заготовки. Результати експериментальних даних процесів кування без оправки дозволили встановити, що різнотовщинність стінки пустотілої поковки склала менше 1,1 %.…”

Section: вступunclassified

Modeling the Processes of Hollow Billets Deformation without Mandrel

Gerasymenko¹

2019

VVPI

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Section: вступunclassified

Modeling the Processes of Hollow Billets Deformation without Mandrel

Gerasymenko¹

2019

VVPI

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“…For the validation of the FE model, the values of relative error were calculated by the differences between the s1 values from simulation and experiment divided by the value from experiment (equation 4). δ = 100% * (s1-fem -s1-exp) / s1-exp (4) The percentage of the wall thickness development (Δsp) was calculated by (equations (5)).…”

Section: Rnp = 100% * (D1/2 -Rnr) / S1mentioning

confidence: 99%

“…In addition, this process can produce advantageous inner profiles for tubes [3]. Nowadays, rotary swaging is widely used in automobile and textile industry [4]. The main part of a rotary swaging machine is the swaging head, wherein two or more dies are concentrically arranged.…”

Section: Introductionmentioning

confidence: 99%

Axial and Radial Material Flow Analysis in Infeed Rotary Swaging of Tubes

et al. 2018

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In rotary swaging – an incremental cold forming production technique to reduce the diameter of axisymmetric parts – the material flow can be assumed to be predominantly axial and radial. The actual ratio of this axial and radial flow influences the mechanical properties and especially in tube forming the final geometry. It is known that during mandrel free infeed rotary swaging of tubes the wall thickness changes. The change is depending on the process parameters like incremental and cumulated strain. Hence, the ratio of axial and radial material flow changes. Consequently, the analysis of the wall thickness of rotary swaged tubes enables fundamental insight how to control the material flow direction. In this study, the infeed rotary swaging process of steel tubes with different wall thicknesses from 3 mm to 7 mm and rods were investigated with FEM under two feeding velocities. The axial and radial material flow and the resulting geometry were studied by the relative wall thickness. It could be seen that the relative wall thickness was affected by the feeding velocity as well as the initial wall thickness. The findings of the simulation were validated by rotary swaging experiments.

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“…Therefore, the infeed swaging process is often utilized in the situation where the work piece is necked from one end. The recess swaging process is often used to reduce the diameter at a certain position of the work piece, or to form a concave profile [1][2][3][4][5][6]. [5], the influence of friction and the die angle on residual stresses [6] and temperature distribution during the process [9,10].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis and Experimental Evaluation of Residual Stress of Zr-4 alloys Processed through Swaging

Singh

Kalita

Narayanan³

et al. 2020

Metals

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Zirconium alloy has been extensively used as a cladding material in nuclear power reactors due to its low neutron absorption cross section, excellent mechanical properties, and corrosion resistance. The influence of the swaging parameter, feed rate (0.7, 1.25, 2 m/min) on residual stress induced in Zr-4 alloy is investigated in the present work. A three-dimensional finite element model was implemented in the Deform 3D software to simulate the rotary swaging (RS) process over a circular rod of Zr-4 alloy. The simulation results based on the 3D framework provide a detailed insight of residual stress, true stress versus true strain and force applied over the rod during the multiple pass swaging process; the results are compared with experimental results. The experimental hole drilling method is used to determine the residual stresses on swaged zirconium alloy at different feed rates (0.7, 1.25, and 2 m/min). A similar trend of residual stress between experimental and numerical results from the surface to the center on the swaged rod samples is observed. The same magnitude of residual stress at the surface of the swaged Zr-4 rod is also observed. It is found to be compressive at the surface and tensile in the center of the samples, as observed in the present work.

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Rotary Swaging Forming Process of Tube Workpieces

Cited by 31 publications

References 7 publications

Modeling the Processes of Hollow Billets Deformation without Mandrel

Modeling the Processes of Hollow Billets Deformation without Mandrel

Axial and Radial Material Flow Analysis in Infeed Rotary Swaging of Tubes

Finite Element Analysis and Experimental Evaluation of Residual Stress of Zr-4 alloys Processed through Swaging

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