Formation mechanism and control of flaring in forward tube spinning

Zhan, Mei; Guo, Jing; Fu, Ming; Li, R.; Gao, Pengfei; Long, Hui

doi:10.1007/s00170-017-0690-6

Cited by 22 publications

(5 citation statements)

References 29 publications

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“…This paper adopts the mandrel rotation model that blank rotated under the clamping of mandrel and tailstock, and roller moved in the axial direction [17]. The specific loading method is that roller applies a constant axial velocity, and does not restrain the axial rotation degree.…”

Section: Boundary Conditionmentioning

confidence: 99%

Stability research on spinning of ultra-thin-wall aluminum alloy tube

et al. 2020

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In this paper, the instability in spinning process of ultra-thin-wall tube is analyzed, and the influence law of different parameters of roller and main process parameters in spinning forming process. Firstly, the forward spinning finite element model of ultra-thin wall tube is established and its reliability is verified. It is concluded that the instability of ultra-thinwall aluminum alloy tube during spinning is caused by its poor rigidity and material flow disorder. The effects of different parameters of roller (roller diameters, roller forming angles and roller corner radii) and the main process parameters (feed rates, friction coefficients and thinning rates) on the equivalent plastic strain and diameter expansion amount in spinning forming process were investigated. The results show that the influence of each parameter on the stability of ultra-thin-wall is quite different. The influence of roller corner radius is stronger than roller diameter and much stronger than roller forming angle. The influence that feed rate does the expansion amount to exist a minimum value. The friction coefficient and thinning rate have positive correlation with expansion amount. The optimum combination of process parameters was further determined, and the accuracy of the results was verified by experiments, which provided reference and guidance for actual production.

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Section: Boundary Conditionmentioning

confidence: 99%

Stability research on spinning of ultra-thin-wall aluminum alloy tube

et al. 2020

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“…Power spinning is an ideal flexible forming process to manufacture thin-walled high-performance and seamless tubular parts (Zhan et al, 2015;Zhan et al, 2018;. Its processing products are widely used in aerospace, military industry, automotive, chemical, and other fields, such as rocket shell, gun cylinder, wheels, connecting rod bushing, and high-pressure containers (Xu et al, 2016;Zhao et al, 2015;Roy and Maijer, 2015).…”

Section: Influence Of Process Parameters On the Forming Results Of Large-sized Cylindrical Parts During Counter-roller Spinning 1 Introdumentioning

confidence: 99%

Influence of process parameters on the forming results of large-sized cylindrical parts during counter-roller spinning

Zhao

Zhu

et al. 2022

JAMDSM

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As an advanced plastic-forming method, counter-roller spinning (CRS) is mainly applied to process large-sized, thin-walled cylinder for aerospace rocket engine. Medium carbon quenched and tempered steel 30CrMnSiA is a typical material for solid rocket motor due to its high strength, high toughness and good fatigue resistance. The determination of complex process parameters and the detection of multiple forming indexes are necessary for the study of CRS. In this paper, a finite element (FE) model for CRS of 30CrMnSiA cylinder with a diameter of 2.25 m was established and verified according to the experimental data. The effects of multiple process parameters on the forming results were studied and analyzed by orthogonal experiment. Results reveal that the thinning ratio is the most important process parameter for all the forming results. Larger thinning rate can improve production efficiency but reduce forming accuracy and require equipment to provide greater spinning force. The influence laws of process parameters on the forming accuracy and spinning force of the outside of the cylindrical parts are similar to that of the inside of the cylindrical parts. In addition, the forming accuracy error and spinning force of the inside of the cylindrical parts are smaller than that of the outside of the cylindrical parts. Thus, the forming force and positioning accuracy of the outer roller holder can be given priority when developing the CRS equipment. Based on the ANOVA results, a multivariate nonlinear regression analysis was performed on the forming results by selecting significant process parameters as independent variables. The optimal range of process parameters for obtaining good forming results was obtained by processing the regression equation.

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“…In studies of spinning processes, FE simulation is an efficient method for investigation of the deformation characteristics of plastic forming processes and defect prediction [17][18][19][20] . The FE software Simufact.forming was used for DRSP simulations and was used in combination with experimental results to analyze and explain the deformation characteristics and parameter effects.…”

Section: Finite Element (Fe) Simulationmentioning

confidence: 99%

Study of dieless radial spinning for thick-walled cylindrical parts with external grooves

Liu

Jin

Rao

et al. 2021

Int J Adv Manuf Technol

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Thick-walled cylindrical parts with external grooves are common components in the automobile and aviation fields. Such components can be produced by pressing the outer surface of a spinning thick-walled aluminum alloy tube by the dieless radial spinning process. The forming characteristics in the spinning process and the effects of various process parameters on forming were studied by using orthogonal tests and finite element simulations. During the forming process, bulge and thickness reductions occur because of material flow. The results of an investigation of process parameter effects show that the stress yield ratio (ξ) had no significant effect on forming. However, the feed thickness ratio (η) and initial wall thickness of the tube (t0) crucially affected the forming quality (e.g., the heights of bulges and thickness reduction in the groove area). Thick-walled tubes presented different phenomena compared to the thin-walled. Keywords Thick-walled; dieless; spinning; orthogonal test; finite element; aluminum alloy Highlights of the research:1. The thick-walled cylindrical parts with external grooves were produced by the dieless radial spinning process.2. The effects of the process parameters on the forming quality were analyzed.3. The difference between the thick-walled tubes thin-walled tubes while spinning process was revealed. 4. A suggestion about the values of the parameters to obtain an eligible part were given.

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Formation mechanism and control of flaring in forward tube spinning

Cited by 22 publications

References 29 publications

Stability research on spinning of ultra-thin-wall aluminum alloy tube

Stability research on spinning of ultra-thin-wall aluminum alloy tube

Influence of process parameters on the forming results of large-sized cylindrical parts during counter-roller spinning

Study of dieless radial spinning for thick-walled cylindrical parts with external grooves

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