Two-Step Spin Forming of Thin-Walled Heads with Lateral Normal Flanged Holes
A thin-walled head with a lateral normal flanged hole is a key part of a propellant tank, and its low-cost and high-precision forming process is very challenging. In this paper, a two-step method is proposed to preform the head via marginal-restraint mandrel-free spinning and then to realize the fla...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-08-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/13/8/1414 |
| _version_ | 1797583844425072640 |
|---|---|
| author | Lijun Zhu Cheng Huang Xinhe Li Xin Chang Chao Liu |
| author_facet | Lijun Zhu Cheng Huang Xinhe Li Xin Chang Chao Liu |
| author_sort | Lijun Zhu |
| collection | DOAJ |
| description | A thin-walled head with a lateral normal flanged hole is a key part of a propellant tank, and its low-cost and high-precision forming process is very challenging. In this paper, a two-step method is proposed to preform the head via marginal-restraint mandrel-free spinning and then to realize the flanging of the lateral normal hole using a punching–spinning method. Finite element analysis of round-hole punching–spinning flanging shows that the larger the thinning ratio and the roller fillet radius, the lower the rebound and contour rise amount; the larger the feed ratio, the lower the rebound and the higher the contour rise amount. Further study on the effects of round-hole punching–spinning flanging on the secondary deformation of thin-walled heads shows that the deformation of the head in the area around the flanging hole is less severe than that of the flat blank, and the deformation in the circumferential direction is different from that in the busbar direction. Finally, it is verified through experiments that the two-step method can realize the spin forming of thin-walled heads with lateral normal flanged holes. |
| first_indexed | 2024-03-10T23:44:45Z |
| format | Article |
| id | doaj.art-8c4af153a1ae4e85a8935d6fe8bc9c52 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T23:44:45Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-8c4af153a1ae4e85a8935d6fe8bc9c522023-11-19T02:10:51ZengMDPI AGMetals2075-47012023-08-01138141410.3390/met13081414Two-Step Spin Forming of Thin-Walled Heads with Lateral Normal Flanged HolesLijun Zhu0Cheng Huang1Xinhe Li2Xin Chang3Chao Liu4Light Alloy Research Institute, Central South University, Changsha 410083, ChinaLight Alloy Research Institute, Central South University, Changsha 410083, ChinaLight Alloy Research Institute, Central South University, Changsha 410083, ChinaLight Alloy Research Institute, Central South University, Changsha 410083, ChinaLight Alloy Research Institute, Central South University, Changsha 410083, ChinaA thin-walled head with a lateral normal flanged hole is a key part of a propellant tank, and its low-cost and high-precision forming process is very challenging. In this paper, a two-step method is proposed to preform the head via marginal-restraint mandrel-free spinning and then to realize the flanging of the lateral normal hole using a punching–spinning method. Finite element analysis of round-hole punching–spinning flanging shows that the larger the thinning ratio and the roller fillet radius, the lower the rebound and contour rise amount; the larger the feed ratio, the lower the rebound and the higher the contour rise amount. Further study on the effects of round-hole punching–spinning flanging on the secondary deformation of thin-walled heads shows that the deformation of the head in the area around the flanging hole is less severe than that of the flat blank, and the deformation in the circumferential direction is different from that in the busbar direction. Finally, it is verified through experiments that the two-step method can realize the spin forming of thin-walled heads with lateral normal flanged holes.https://www.mdpi.com/2075-4701/13/8/1414aluminum alloymandrel-free spinlateral normal flanged holethin-walled head |
| spellingShingle | Lijun Zhu Cheng Huang Xinhe Li Xin Chang Chao Liu Two-Step Spin Forming of Thin-Walled Heads with Lateral Normal Flanged Holes Metals aluminum alloy mandrel-free spin lateral normal flanged hole thin-walled head |
| title | Two-Step Spin Forming of Thin-Walled Heads with Lateral Normal Flanged Holes |
| title_full | Two-Step Spin Forming of Thin-Walled Heads with Lateral Normal Flanged Holes |
| title_fullStr | Two-Step Spin Forming of Thin-Walled Heads with Lateral Normal Flanged Holes |
| title_full_unstemmed | Two-Step Spin Forming of Thin-Walled Heads with Lateral Normal Flanged Holes |
| title_short | Two-Step Spin Forming of Thin-Walled Heads with Lateral Normal Flanged Holes |
| title_sort | two step spin forming of thin walled heads with lateral normal flanged holes |
| topic | aluminum alloy mandrel-free spin lateral normal flanged hole thin-walled head |
| url | https://www.mdpi.com/2075-4701/13/8/1414 |
| work_keys_str_mv | AT lijunzhu twostepspinformingofthinwalledheadswithlateralnormalflangedholes AT chenghuang twostepspinformingofthinwalledheadswithlateralnormalflangedholes AT xinheli twostepspinformingofthinwalledheadswithlateralnormalflangedholes AT xinchang twostepspinformingofthinwalledheadswithlateralnormalflangedholes AT chaoliu twostepspinformingofthinwalledheadswithlateralnormalflangedholes |