Water jet incremental sheet metal forming: a critical state-of-the-art review and a proposal for technological windows

Miroir, Mathieu; Laniel, Romain; Brient, A.; Kerbrat, Olivier

doi:10.1007/s00170-021-08635-6

Cited by 5 publications

(2 citation statements)

References 31 publications

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“…This is promising for automotive, micro-electronics, medical, and aerospace industries, requiring a multi-axial machine and pressure pump. Environmentally friendly with water recycling and no lubricants, WJISF warrants more research in terms of complex shapes and different alloys [31].…”

Section: Introductionmentioning

confidence: 99%

Hot-Air Contactless Single-Point Incremental Forming

Almadani,

Guner,

Hassanin

et al. 2023

JMMP

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Single-point incremental forming (SPIF) has emerged as a time-efficient approach that offers increased material formability compared to conventional sheet-metal forming techniques. However, the physical interaction between the forming tool and the sheet poses challenges, such as tool wear and formability limits. This study introduces a novel sheet-forming technique called contactless single-point incremental forming (CSPIF), which uses hot compressed air as a deformation tool, eliminating the requirement for physical interaction between the sheet and a rigid forming tool. In this study, a polycarbonate sheet was chosen as the case-study material and subjected to the developed CSPIF. The experiments were carried out at an air temperature of 160 °C, air pressure of 1 bar, a nozzle speed of 750 mm/min, and a step-down thickness of 0.75 mm. A Schlieren setup and a thermal camera were used to visualize the motion of the compressed hot air as it traveled from the nozzle to the sheet. The results showed that the CSPIF technique allowed for the precise shaping of the polycarbonate sheet with minimal springback. However, minor deviations from the designed profile were observed, primarily at the starting point of the nozzle, which can be attributed to the bending effects of the sample. In addition, the occurrence of sheet thinning and material buildup on the deformed workpiece was also observed. The average surface roughness (Ra) of the deformed workpiece was measured to be 0.2871 microns.

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Section: Introductionmentioning

confidence: 99%

Hot-Air Contactless Single-Point Incremental Forming

Almadani,

Guner,

Hassanin

et al. 2023

JMMP

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“…Particular importance is also attributed to the sustainability of this unconventional forming process by Liu et al [ 3 ]. In the meantime, a number of technological variants of the incremental forming process have emerged, such as the two-point incremental forming [ 4 ], in which the material is supported by a second element on the opposite side to the one on which the punch works, and the use of water as the active element instead of a rigid punch [ 5 ]. Naturally, the first pieces of research on this forming process were carried out on metallic materials, in particular deep-drawing steels and aluminum, in the early 1960s.…”

Section: Introductionmentioning

confidence: 99%

Minimizing the Main Strains and Thickness Reduction in the Single Point Incremental Forming Process of Polyamide and High-Density Polyethylene Sheets

et al. 2023

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Polymeric materials are increasingly used in the automotive industry, aeronautics, medical device industry, etc. due to their advantage of providing good mechanical strength at low weight. The incremental forming process for polymeric materials is gaining increasing importance because of the advantages it offers: relatively complex parts can be produced at minimum cost without the need for complex and expensive dies. Knowing the main strains and especially the thickness reduction is particularly important as it directly contributes to the mechanical strength of the processed parts, including in operation. For the design of experiments, the Taguchi method was chosen, with an L18 orthogonal array obtained by varying the material on two levels (polyamide and polyethylene) and the other three parameters on three levels: punch diameter (6 mm, 8 mm and 10 mm), wall angle (50°, 55° and 60°) and step down (0.5 mm, 0.75 mm and 1 mm). The output parameters were strain in the x direction, strain in the y direction, major strain, minor strain, shear angle and thickness reduction. Two analyses were conducted: signal-to-noise ratio analysis with the smaller-is-better condition and analysis of variance. The optimum values for which the thickness was reduced were the following: wall angle of 50°, punch diameter of 10 mm and step down of 0.75 mm.

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