Understanding formability and geometrical accuracy of SPIF process used as Reshaping approach

Zaheer, Omer; Ingarao, Giuseppe; Lorenzo, Rosa Di; Fratini, Livan

doi:10.25518/esaform21.4315

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…the basic version of the incremental forming process requiring no dies and forming tools with simple shapes [1], is being extensively used as an alternative technique in sheet metal industry operations for the manufacture of components with symmetric and asymmetric shapes by using CNC machines [2]. This process, initially developed for the needs of car body manufacturers, is now used in many other industries, i.e., automotive, aerospace, marine and medical [3]; in addition, thanks to its high flexibility, SPIF is also considered as a viable solution for reshaping sheet metal End-of-Life components, in line with the principles of the circular economy [4].…”

Section: Introductionmentioning

confidence: 99%

Formability and surface quality of non-conventional material sheets for the manufacture of highly customized components

et al. 2022

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In this work, incremental forming of pure niobium planar isotropic sheets was studied; in particular, two different types of test were conducted by varying the tool/sheet contact conditions, in order to understand the complex phenomena interesting this hard-to-form non-conventional material and to focus the attention on its formability and the finishing of the worked surfaces. From the tests, the formability limits were determined, the forming forces were acquired and analysed, the quality of the worked surfaces was evaluated with measures of roughness and high-magnification visual inspection, as well as the failures of the sheets were observed and interpreted. The results highlight that a proper choice of the contact conditions can avoid the occurrence of galling while preserving an optimal carrying out of the process. In any case, very good surface finishing and workability of niobium sheets, despite their brittle nature, is found when incrementally formed. As a consequence, incremental sheet forming of this non-conventional material can be considered a faisible way of manufacturing highly customized components.

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Section: Introductionmentioning

confidence: 99%

Formability and surface quality of non-conventional material sheets for the manufacture of highly customized components

et al. 2022

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Improvement of Formability and Surface Finish of Cupro–nickel (70/30) Alloy During Single Point Incremental Forming Process Using Chrome Steel Laser Ablated Ball

ARUN PRASAD,

SATHIYA NARAYANAN,

VARATHARAJULU

et al. 2024

Surf. Rev. Lett.

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Cupro–nickel alloy of 70/30 grade was experimented for its formability by SPIF tests, namely straight groove test and wall angle test using a ball attached tool, to emphasize the concern on formability and surface roughness. Two different types of ball were used, one ball was used in polished form and another one was surface-textured using Nd-Yag laser. The cupro–nickel alloy has excellent corrosion resistance and popularly used in marine environments. In this research, an attempt has been made to study the formability when using Chrome steel laser ablated ball. The results concluded that Chrome steel laser ablated ball with oil as lubrication has avoided the occurrence galling and at the same time improved the formability. When experimenting with chrome steel polished ball, the tool and sheet contact is high and the lubricating oil will be less and it is causing the sheet to get heated. The dimples on the ball’s surface made by the laser retain more lubricating oil and thereby decreasing the friction which eventually leads to the delayed fracture. It is found that the formability was increased by 16% in straight groove test, 4.8% for wall angle test and surface roughness values were decreased by 1.4%.

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Understanding formability and geometrical accuracy of SPIF process used as Reshaping approach

Cited by 2 publications

References 7 publications

Formability and surface quality of non-conventional material sheets for the manufacture of highly customized components

Formability and surface quality of non-conventional material sheets for the manufacture of highly customized components

Improvement of Formability and Surface Finish of Cupro–nickel (70/30) Alloy During Single Point Incremental Forming Process Using Chrome Steel Laser Ablated Ball

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