Enhancing formability of spherical bottom cylindrical parts with magnetic medium on deep drawing process

Liu, Yang; Li, Feng; Li, Chao; Xu, Jie

doi:10.1007/s00170-019-03505-8

Cited by 8 publications

(3 citation statements)

References 14 publications

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“…They also observed that by increasing the pre-bulging pressure, the springback could be significantly reduced and forming could be improved by increasing the drawing height by 10%. 26 Xunzhong et al investigated the formability of cylindrical aluminum parts with unequal wall length using hydromechanical deep drawing processes and the effect of pre-bulging with finite element analyses and experimental studies. In their study, they stated that the parts drawn using appropriate pre-bulging and chamber pressure in Al2198 sheet metal material had a more evenly distributed wall thickness and higher quality surfaces.…”

Section: Introductionmentioning

confidence: 99%

A novel approach to the conventional deep drawing process

Kabakçi

Karaağaç

Demirel

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this study, the mechanical formability of Al6061-T6 sheet material using a pre-bulging process was experimentally investigated. Therefore, an innovative die entrance design was applied to conventional deep drawing dies. In addition to the formability of the Al6061-T6 material, the effects of the innovative design on the energy consumption and thickness distribution were also investigated. For the experimental studies, deep drawing dies capable of mechanically pre-bulging at 0°, 15°, and 30° angles were designed and experimental studies were carried out at a 10 mm/sec forming speed with constant blank holder force. It was observed that the Al6061-T6 material, which was drawn at the highest ratio of ß = 2.0 in a single operation with the conventional deep drawing method, can be deep drawn at a drawing ratio of ß = 2.2 in a single operation with this new method, and the forming force was reduced by 24.45%. It was found that the deep-drawn Al6061-T6 sample, which was drawn at the highest ß = 2.2 drawing ratio, exhibited a maximum sheet thinning of 15%, and it could be formed with a single die in a single operation without forming defects such as cracking and wrinkling.

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Section: Introductionmentioning

confidence: 99%

A novel approach to the conventional deep drawing process

Kabakçi

Karaağaç

Demirel

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…In general, almost all of them are conventionally fashioned by deep drawing process. On the basis of experimental and FEM works, the developments on this process have been continuously reported in many past studies [5][6][7][8][9]. For examples, Mahdavian and Tui Mei Yen [5] determined the effect of different punches' head profiles on the deep drawing of 5005H34 aluminium circular blanks to manufacture a cup-shape product.…”

Section: Introductionmentioning

confidence: 99%

“…Nei et al [6] investigated the deep drawing at various temperatures and studied the microstructure evolutions of three typical regions including bottom, corner, and wall taken from the drawn cylindrical part with the largest limiting drawing ratio (LDR). Liu et al [7] showed the increase in the formability and quality of the pure aluminium spherical bottom cylindrical parts (SBCP) by using magnetic medium-assisted sheet metal drawing process. Bassoil et al [8] studied the effects of a draw bead working on an Al6014-T4 strip according to assigned industrial conditions by the handy draw bead simulator (DBS).…”

Section: Introductionmentioning

confidence: 99%

Achievements of Nearly Zero Earing Defects on SPCC Cylindrical Drawn Cup Using Multi Draw Radius Die

Jankree

Thipprakmas

2020

Metals

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In recent years, the old-fashioned cylindrical cup shapes are still widely used, and there are many defects which could not be solved yet. In the present research, the classical earing defects, which are mainly caused by the material mechanical property of the anisotropic property of the material (R-value), are focused on. The multi draw radius (MDR) deep drawing die is applied and investigated to achieve nearly zero earing defects by encountering the R-value during the deep drawing process. Based on the experiments, in different directions in the sheet plane, the somewhat concurrent plastic deformation could be controlled, and the uniform elongated grain microstructure and uniform strain distributions on the cup wall could be achieved. Therefore, on the basis of these characteristics, the earing defects could be prevented, and the nearly zero earing defects could be achieved. However, to achieve the nearly zero earing defects, the suitable MDR die design relating to the R-value should be strictly considered. In the present research, to apply the MDR die for the medium carbon steel sheet grade SPCC cylindrical drawn cup, the following was recommended: the large draw radius positioned at 45° to the rolling direction and the small draw radius positioned along the plane and at 90° to the rolling direction. Therefore, in the present research, it was originally revealed that the nearly zero earing defects could be successfully performed on the process by using the MDR die application.

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