Effects of neck length on occurrence of cracking in tube spinning

Takahashi, Yoshihiro; Kihara, Shigefumi; Nagamachi, Takuo; Higaki, Kozi

doi:10.1016/j.promfg.2018.07.368

Cited by 9 publications

(3 citation statements)

References 3 publications

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“…Yoshihara et al [12] designed and improved a finite element model of magnesium alloy tube spinning. Takahashi et al [13] studied the effect of neck length on crack formation during the spinning process through experiments and three-dimensional finite element simulation. Jiang et al [14] used ball spinning technology to manufacture a composite tube of copper and aluminum and obtained the interface compatibility of the composite tube during ball spinning.…”

Section: Introductionmentioning

confidence: 99%

Influence of Inner Roller Geometric Parameters on Counter-Roller Spinning with 6061 Aluminum Alloy Tube

Zhao,

Mu,

Zhao

et al. 2023

Metals

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The inner roller exerts a supportive and thinning effect on the inner side of the tube during counter-roller spinning. In this paper, the Finite Element Analysis (FEA) model of counter-roller spinning for a 6061 aluminum alloy tube was established based on the ABAQUS/Explicit module. The deformation characteristics and the influence of inner roller geometrical parameters on the tube spinning were analyzed. The results showed that the stress–strain on the outer of the tube was greater than that of the inner, and flaring was more prone to occur in the initial stage of counter-roller spinning compared to traditional mandrel spinning. The order of the effects of geometrical parameters of the inner roller on the roundness error and wall thickness deviation was as follows: nose radius > diameter > front angle. The order of factors influencing the inner and outer spinning force was as follows: diameter > nose radius > front angle. Increasing the diameter of the inner roller can improve the spinning stability and forming accuracy of counter-roller spinning. It was beneficial to improve the forming accuracy when the nose radius of the inner roller was slightly larger than that of the outer roller. The front angle of the inner roller has little influence on the spinning forming accuracy.

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Section: Introductionmentioning

confidence: 99%

Influence of Inner Roller Geometric Parameters on Counter-Roller Spinning with 6061 Aluminum Alloy Tube

Zhao,

Mu,

Zhao

et al. 2023

Metals

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“…Yao and Makoto [14] conducted an experimental study on the near-axis spinning of tube ends and investigated the effects on thickness strain, torsion angle, spinning force and surface nish of aluminum products with the parameters of spinning pitch and diameter reduction. Through experiments and 3D nite element simulations, Yt et al [15] investigated the effect of neck length on crack generation during the spinning of SUS409, and determined the spinning conditions under which cracking would not occur based on the calculated damage values. Huang et al [16] explored the thickness distribution and outer pro le of the tube necking spinning process using the nite element model established by the shell cell.…”

Section: Introductionmentioning

confidence: 99%

Research on the Integral Forming Process of Thin walled and Thick Mouth Seamless Gas Cylinders

Wang,

Yu,

Tian

et al. 2023

Preprint

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There is a considerable difference in wall thickness between the mouth and the cavity of thin-walled and thick-mouthed seamless gas cylinders, and the existing manufacturing processes are unable to effectively meet product requirements. To overcome such issue, a step-by-step boring-necking-spinning solution for gas cylinders was proposed, in which sufficient wall thickness is reserved for the mouth area of the cylinder blank, followed by necking-spinning to realize the overall forming of thin-walled, thick-mouthed seamless gas cylinders. The stress-strain distribution and geometric dimensional changes of gas cylinders during the spinning process were investigated by means of finite element simulation, and the effects of different process parameters on the stress and wall thickness of the bottle mouth were analyzed. Further, multi-objective optimization of the response surface model was performed using the NSGA-II algorithm to derive a set of optimal process parameters. Finally, the correctness of the simulation and optimization results was verified experimentally, and the expected geometry and optimal strain state of the gas cylinder were obtained. The newly developed processing solution represents a groundbreaking advancement in the manufacturing of thin-walled and thick-mouthed gas cylinders.

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“…For the SET, Takahashi et al [5] performed the neck-in spinning at the end of the tube by double rollers and the effects of neck length on the occurrence of cracking were investigated. It is demonstrated that the damage value increases with the neck length.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and experimental study on non-axisymmetric spinning with a groove at the middle of the tube

Zhang

XuanWang

Shen

et al. 2022

Int J Adv Manuf Technol

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Spinning is widely used in aerospace and automobile industries, and non-axisymmetric spinning is developing with the increasing demand of irregular shape forming. Based on this, an avoidance groove at the middle of the tube (AGMT) which has potential application value in aircraft structure weight reduction is proposed and formed by using non-axisymmetric die-less spinning. The roller path is analyzed. The relationship between radial displacement of roller and the rotation angle of the tube is deduced. Based on the roller path, 3D finite element model is established. Then, the AGMT spinning experiment is carried out to verify the simulation results. The maximum deviation between the simulation and experimental results is less than 15%. It is indicated that the 3D finite element model established in this study is reliable and the method for the AGMT forming is feasible. The wall thickness and strain-stress distributions are analyzed. The severe wall thicken and thinning occur in the transition zones, so more attention should be paid to these positions. The depth of the groove has great impact on the forming quality. Deeper groove results in distortion and larger wall thickness difference.The research laid a foundation for the further development and optimization of the AGMT spinning.

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Effects of neck length on occurrence of cracking in tube spinning

Cited by 9 publications

References 3 publications

Influence of Inner Roller Geometric Parameters on Counter-Roller Spinning with 6061 Aluminum Alloy Tube

Influence of Inner Roller Geometric Parameters on Counter-Roller Spinning with 6061 Aluminum Alloy Tube

Research on the Integral Forming Process of Thin walled and Thick Mouth Seamless Gas Cylinders

Numerical simulation and experimental study on non-axisymmetric spinning with a groove at the middle of the tube

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