Effects of Variable Punch Speed and Blank Holder Force in Warm Superplastic Deep Drawing Process
A cylindrical deep drawing test was conducted for the purpose of improving the drawability, product accuracy, and quality in warm deep drawing using a superplastic material with large strain rate dependence. Then, the effects of blank holding force (BHF) and punch speed (SPD) on the flange wrinkle b...
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| Format: | Article |
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MDPI AG
2021-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/3/493 |
| _version_ | 1797541080090017792 |
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| author | Ken-ichi Manabe Kentaro Soeda Akinori Shibata |
| author_facet | Ken-ichi Manabe Kentaro Soeda Akinori Shibata |
| author_sort | Ken-ichi Manabe |
| collection | DOAJ |
| description | A cylindrical deep drawing test was conducted for the purpose of improving the drawability, product accuracy, and quality in warm deep drawing using a superplastic material with large strain rate dependence. Then, the effects of blank holding force (BHF) and punch speed (SPD) on the flange wrinkle behavior and wall thickness distribution were investigated by experiments and theoretical analysis. A Zn-22Al-0.5Cu-0.01Mg alloy superplastic material SPZ2 with a sheet thickness of 1 mm was employed as the experimental material, and a cylindrical deep drawing experiment with the drawing ratio (DR) of 3.1 and 5 was performed at 250 °C. A good agreement was qualitatively obtained between the elementary theory on the flange wrinkle limit, the fracture limit, and the experimental results. In addition, the authors examined each variable BHF and SPD method obtained from the theory and experimentally demonstrated that the variable BHF method has a great effect on uniform wall thickness distribution and that variable SPD has a great effect on shortening the processing time for superplastic materials. Furthermore, the authors demonstrated the effectiveness of the variable BHF/SPD deep drawing method that varies both BHF and SPD simultaneously. |
| first_indexed | 2024-03-10T13:10:40Z |
| format | Article |
| id | doaj.art-e258eba4954e4658bcbc06e914237ed3 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T13:10:40Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-e258eba4954e4658bcbc06e914237ed32023-11-21T10:48:43ZengMDPI AGMetals2075-47012021-03-0111349310.3390/met11030493Effects of Variable Punch Speed and Blank Holder Force in Warm Superplastic Deep Drawing ProcessKen-ichi Manabe0Kentaro Soeda1Akinori Shibata2Department of Mechanical Systems Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, JapanDepartment of Mechanical Systems Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, JapanDepartment of Mechanical Systems Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, JapanA cylindrical deep drawing test was conducted for the purpose of improving the drawability, product accuracy, and quality in warm deep drawing using a superplastic material with large strain rate dependence. Then, the effects of blank holding force (BHF) and punch speed (SPD) on the flange wrinkle behavior and wall thickness distribution were investigated by experiments and theoretical analysis. A Zn-22Al-0.5Cu-0.01Mg alloy superplastic material SPZ2 with a sheet thickness of 1 mm was employed as the experimental material, and a cylindrical deep drawing experiment with the drawing ratio (DR) of 3.1 and 5 was performed at 250 °C. A good agreement was qualitatively obtained between the elementary theory on the flange wrinkle limit, the fracture limit, and the experimental results. In addition, the authors examined each variable BHF and SPD method obtained from the theory and experimentally demonstrated that the variable BHF method has a great effect on uniform wall thickness distribution and that variable SPD has a great effect on shortening the processing time for superplastic materials. Furthermore, the authors demonstrated the effectiveness of the variable BHF/SPD deep drawing method that varies both BHF and SPD simultaneously.https://www.mdpi.com/2075-4701/11/3/493superplastic formingwarm cylindrical deep drawingflange wrinklingelementary theoryvariable blank holding force: variable punch speedthickness distribution |
| spellingShingle | Ken-ichi Manabe Kentaro Soeda Akinori Shibata Effects of Variable Punch Speed and Blank Holder Force in Warm Superplastic Deep Drawing Process Metals superplastic forming warm cylindrical deep drawing flange wrinkling elementary theory variable blank holding force: variable punch speed thickness distribution |
| title | Effects of Variable Punch Speed and Blank Holder Force in Warm Superplastic Deep Drawing Process |
| title_full | Effects of Variable Punch Speed and Blank Holder Force in Warm Superplastic Deep Drawing Process |
| title_fullStr | Effects of Variable Punch Speed and Blank Holder Force in Warm Superplastic Deep Drawing Process |
| title_full_unstemmed | Effects of Variable Punch Speed and Blank Holder Force in Warm Superplastic Deep Drawing Process |
| title_short | Effects of Variable Punch Speed and Blank Holder Force in Warm Superplastic Deep Drawing Process |
| title_sort | effects of variable punch speed and blank holder force in warm superplastic deep drawing process |
| topic | superplastic forming warm cylindrical deep drawing flange wrinkling elementary theory variable blank holding force: variable punch speed thickness distribution |
| url | https://www.mdpi.com/2075-4701/11/3/493 |
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