Sheet metal shrink flanging process: a critical review of current scenario and future prospects

Dewang, Yogesh; Sharma, Vipin

doi:10.1080/10426914.2022.2149779

Cited by 11 publications

(5 citation statements)

References 346 publications

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“…A force is exerted on both the hinge and the bottom plate when the machine box door is opened. Insufficient structural stiffness of the bottom plate can potentially lead to severe deformation, instability of the machine body, and other quality issues [1][2].…”

Section: Introductionmentioning

confidence: 99%

Simulation and design optimization of embedded steam baking integrated machine bottom plate structure

Cheng,

Nie,

et al. 2024

J. Phys.: Conf. Ser.

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To address the challenges related to excessive deformation of the bottom plate during the opening and closing of the steam-baking integrated machine door, a comprehensive approach that incorporates finite element simulation and experimental testing was employed to investigate the plate’s deformation characteristics. Various structural parameters influencing the bottom plate were evaluated, and a series of enhancement strategies for the bottom plate structure were proposed. Following the optimization process, subsidence deformation of the bottom plate was reduced by 64%, and warpage deformation was reduced by 13.6%. Thus, a solid groundwork was established for subsequent structural stiffness analysis and optimization endeavors in the realm of embedded steam-baking integrated machines.

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Section: Introductionmentioning

confidence: 99%

Simulation and design optimization of embedded steam baking integrated machine bottom plate structure

Cheng,

Nie,

et al. 2024

J. Phys.: Conf. Ser.

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“…Flanges appeared in variety of geometries namely straight, stretch, shrink, hole and joggled flange [5][6][7]. Out of these different variations of flanges, hole flanging is most widely ap-plied form of flanges in industrial applications [8][9].…”

Section: Introductionmentioning

confidence: 99%

“…Hole flanges can be made both through conventional forming as well as incremental forming [10]. Higher formability limit and reduced tooling cost, uniform wall thickness, and improved neck height were major benefits of incremental forming in contrast to conventional forming for forming of hole flanges [8,11]. Cui and Gao [11] found multistage diameter deformation strategy as one of the effective strategies for imparting improved formability of hole flanges through single point incremental forming.…”

Section: Introductionmentioning

confidence: 99%

Tool path planning for hole-flanging process using single point incremental forming

Mohan,

Dewang,

Sharma

2024

MATEC Web Conf.

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Hole-flanging is a process used to create flanges around holes in sheet metal parts. It traditionally relies on dies and punches, posing cost and time challenges for small quantities or prototypes. While Incremental forming does not require dedicated sets of tools and dies, and it provides more flexibility and adaptability with enhanced formability, and emerged as a better alternative to conventional press forming. However, precise and efficient tool path planning is essential to achieve high-quality hole-flanged components. Precise toolpath planning is one of the crucial and important part in designing of hole flanging process for both through numerical simulations and experiments. The objective of the present work is to generate tool paths as well as associated G-codes using MATLAB code for different geometries of incremental hole flanging process using SPIF. Six different geometries of hole flanges were considered to generate tool path using MATLAB code. The proposed methodology was successfully applied for different shapes of hole flanges. Since the proposed methodology provides unified programming technique in the current MATLAB environment, which performs dual duties, creating toolpath coordinates against time data and outputting a G-code file and it saves computational time and programming efforts. Hence, proposed methodology is found to be better for incremental hole flanging in contrast to previously existed methodology for development of toolpath for incremental forming cases. Thus, it was concluded that this proposed methodology can be effective for capturing any intricate shapes for incremental hole flanging. You should leave 8 mm of space above the abstract and 10 mm after the abstract. The heading Abstract should be typed in bold 9-point Arial. The body of the abstract should be typed in normal 9-point Times in a single paragraph, immediately following the heading. The text should be set to 1 line spacing. The abstract should be centred across the page, indented 17 mm from the left and right page margins and justified. It should not normally exceed 200 words.

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“…Sheet metal forming is one of the most popular techniques for producing light and durable products [ 1 , 2 , 3 , 4 ]. In this way, components ranging from small metal accessories and everyday items to large components for the automotive, aviation, and space industries are produced.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Effectiveness of Technological Lubricants with the Addition of Boric Acid in Sheet Metal Forming

2023

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One of the main problems during sheet metal forming is the reduction in coefficient of friction and separation of contact surfaces in order to eliminate buildups of the formed material on the forming tools. For this purpose, technological lubricants based on mineral or synthetic oils are usually used. Unfortunately, their removal from the drawn parts and their subsequent utilization pose many problems and are expensive. Environmentally benign lubricants based on vegetable oils with the addition of boric acid could be an effective alternative to lubricants based on mineral and synthetic oils; however, the solubility of boric acid in oils is limited. Therefore, the paper proposes new, effective, and environmentally friendly methods for applying boric acid to the metal sheet by spraying it on a thin rapeseed oil layer previously applied to the metal sheet or by spraying a 25% solution of boric acid in methyl alcohol onto the sheet. The effectiveness of such lubrication was assessed on the basis of the so-called strip drawing test, Erichsen cupping test, and formation of cylindrical drawn parts in industrial conditions. The tests showed that the addition of boric acid was most effective for forming the DC01 steel sheet, reducing the coefficient of friction by about 60% compared to base oil lubrication. Although its usefulness is lower in the case of other frictional pairs, it eliminates the phenomenon of the formed material sticking to the tool, thus extending the life of the forming tools. The use of the proposed solution reduces production costs and indirectly boosts environmental protection. Moreover, an explanation of the tribological mechanism contributing to the lubrication action of boric acid is given.

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Sheet metal shrink flanging process: a critical review of current scenario and future prospects

Cited by 11 publications

References 346 publications

Simulation and design optimization of embedded steam baking integrated machine bottom plate structure

Simulation and design optimization of embedded steam baking integrated machine bottom plate structure

Tool path planning for hole-flanging process using single point incremental forming

Analysis of the Effectiveness of Technological Lubricants with the Addition of Boric Acid in Sheet Metal Forming

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