Study of tube hydroforming in a trapezoid-sectional die

Xu, Xiao Li; Zhang, Weigang; Li, Shuhui; Lin, Zhongqin

doi:10.1016/j.tws.2008.12.002

Cited by 16 publications

(9 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, thinning was located in the sharp angle of point D with the highest thickness difference. This result is in agreement with those reported in the literature [4,11]. However, a small difference is observed in the straight wall at point A.…”

Section: Trapezoidal Section Diesupporting

confidence: 94%

“…Moreover, different lubricants such as oil, molybdenum disulphide grease (Mso2), and polyethylene (PE) film were used to make the expansion easier. Some authors have also investigated hydroforming processes using other types of dies [4,11]. For example, Xu et al [11]h a v es t u d i e dt h e hydroforming process in a trapezoid-sectional die, taking into account the effects of the friction coefficients and the thickness distribution.…”

Section: Introductionmentioning

confidence: 99%

“…Some authors have also investigated hydroforming processes using other types of dies [4,11]. For example, Xu et al [11]h a v es t u d i e dt h e hydroforming process in a trapezoid-sectional die, taking into account the effects of the friction coefficients and the thickness distribution. The main findings indicate that (1) a fracture occurred at the sharp corner, and wrinkling always occurred first at the obtuse corner; and (2) when the friction value increased, the uniformity of the thickness distribution decreased.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of the lubrication between the tube and the die on the corner filling when hydroforming of different cross-sectional shapes

Abdelkefi

Guermazi²,

Boudeau

et al. 2016

Int J Adv Manuf Technol

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Section: Trapezoidal Section Diesupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of the lubrication between the tube and the die on the corner filling when hydroforming of different cross-sectional shapes

Abdelkefi

Guermazi²,

Boudeau

et al. 2016

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…The material behaviour at the wall thickness with the influence of the friction coefficient was presented through an analytical model [16]. With a variation of 2D sections, the loading paths were studied and revealed that the tube easily burst at the sharp corners [17]. High-pressure tube hydroforming also highly depends on the loading path of pressure, material anisotropy, synchronisation of internal pressure and axial feed, and interface forces between the tube and die [18][19][20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

A numerical analysis on microtube hydroforging

Nikhare

2021

Advances in Materials and Processing Technologies

View full text Add to dashboard Cite

High-pressure tube hydroforming is a promising method to deform the tubes in various shapes by bulging the tube by applying high internal pressure. However, the challenges lie in the process itself, i.e., requires an expensive pump system and brings excessive thinning in the deformed part section. One option is to reduce the required pressure to solve these difficulties, and the other is to provide the axial feed to the tube in the deformation zone to reduce the thinning. However, due to the higher axial load, the tube buckles. This study is taking advantage of this buckling mechanic to convert it into a successful shaping option. This process is named as tube hydroforging. In this process, the tube was first bulged to a level using internal pressure in an open die without axial feed. Then a minimum pressure was applied, and dies were displaced to shape the tube. The paper studies the process for the microtube. The results noted that lower internal pressure is required to bulge the tube and either no internal or a minimum constant pressure to hydroforge the tube depending on the opening section and thickness of the tube.

show abstract

“…Zhang et al studied corrugated tube hydroforming through a combination of experimental research, theoretical verification and numerical simulation [17][18] . Xu et al studied hydroforming parts with trapezoidal cross-sections and found that pipes are prone to wrinkles at acute angles [19] . Crapps et al studied the hydroforming of copper 3way pipes [20] .…”

Section: Introductionmentioning

confidence: 99%

Research on Hydroforming Micro-Sized Spiral Pipe With Equal Wall Thickness

Shi

Zhu

2021

Preprint

View full text Add to dashboard Cite

The positive displacement motor is currently the most widely used downhole power tool. In order to reduce the cost of drilling and exploration, small boreholes have been used to replace conventional boreholes. The working conditions are complex, so a high-performance positive displacement motor for micro-holes is required. In order to solve the problem of the difficulty in processing the inner spiral surface of the small size and large aspect ratio, the tiny size spiral tube stator is proposed in this paper and the normal temperature and hot state hydroforming of the small size spiral tube is proposed in this paper. The material is 42crmo, and the uniaxial tensile test is carried out at different temperatures. According to the material mechanical properties experiment and the forming process, the finite element model of the hydroformed spiral tube at different temperatures is established. The study found that the suitable tube size is 48mm in outer diameter, 5.5mm in wall thickness, and 1405mm in length. When the processing temperature is 700℃, the hydraulic pressure required for full expansion of the spiral tube is only 70MPa, and the rebound of the spiral tube is very small. The minimum wall thickness is the maximum of 4.31mm, and the maximum wall thickness is the minimum of 5.356mm, and the wall thickness distribution is relatively uniform. The maximum plastic strain of the spiral tube is 0.65, so the damage to the material during the forming process is small, and when the processing temperature is 700℃, the quality of the spiral tube is better.

show abstract

Study of tube hydroforming in a trapezoid-sectional die

Cited by 16 publications

References 16 publications

Effect of the lubrication between the tube and the die on the corner filling when hydroforming of different cross-sectional shapes

Effect of the lubrication between the tube and the die on the corner filling when hydroforming of different cross-sectional shapes

A numerical analysis on microtube hydroforging

Research on Hydroforming Micro-Sized Spiral Pipe With Equal Wall Thickness

Contact Info

Product

Resources

About