Optimization of Incremental Forming of Low‐Alloy High‐Yield‐Strength HC300LA Sheet Using a Rolling Blank Holder Method

Taşdemir, Vedat

doi:10.1002/srin.202000512

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…The force is controlled by pneumatic clamps. 13,14 Here, S-T: Region where forming tool does not contact T: Start of forming region T-U: Formed region U-V: Accumulation zone V-W: Unformed stretch zone W: Clamping point W-X: Non-stretched region Y-Z: Contact area with work holder The pneumatic clamp was given in Figure 2(a) is used to generate the blankholder force. Four pneumatic clamps were positioned around the sheet.…”

Section: Tpif-rl Methodsmentioning

confidence: 99%

Optimization of Titanium Grade 2 sheet forming by roller blank holder method

Seçgin

Özsert

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Incremental forming is a rapid prototype production method, which can be used in different industrial applications. In this context, it can be used especially in forming of Titanium Grade 2 sheet as depending on the types of manufacture. The main problem of the incremental forming method is that the wall thickness of the piece obtained after the process is not homogeneous. In this study, Titanium Grade 2 sheet was formed 60° axially symmetrical cone geometry using the roller blank holder method (TPIF-RL), which is a new approach. This method provides bigger wall thickness than the conventional incremental forming method considering its results. In this study, it was aimed to investigate the effectiveness of the new roller blank holder method on titanium material. In the experiments, the axisymmetrical piece with a height of 40 mm was formed (the forming angle is 60° with the horizontal). Feedrate, clamping pressure, increment, and forming tool diameter were used as parameters. Forming force, surface roughness, and wall thickness distributions obtained as a result of experimental studies were examined statistically. The interactions of the parameters were evaluated, and optimum levels of forming parameters were determined for the roller blank holder method. In addition, by using gray relational analysis, parameter levels of three dependent variables (forming force, surface roughness, and sheet thickness) were defined to optimize at the same time. As a result, bigger wall thickness was obtained with a low clamping force considering roller blank holder method. It was determined the levels that optimize the three parameters together were 2 bar pressure, 500 mm/min feed rate, 0.25 mm increment, and 5 mm forming tool diameter. Bigger wall thickness was obtained with a low clamping force considering roller blank holder method.

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Section: Tpif-rl Methodsmentioning

confidence: 99%

Optimization of Titanium Grade 2 sheet forming by roller blank holder method

Seçgin

Özsert

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…The height of the formed part is 40 mm. Four different factors were examined as pressure, feedrate, increment and forming tool diameter [11][12][13][14]. A total of 18 experiments were performed by the TPIF-RL method.…”

Section: Methodsmentioning

confidence: 99%

Incremental Forming of Titanium Grade 2 Sheet by TPIF-RL Method

Seçgin¹,

Nart²,

Özsert³

2021

International Journal of Automotive Science and Technology

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TPIF-RL method is a new method that gives better wall thickness in incremental forming. In this method, the sheet is not fixed at the edges. Like the deep drawing process, it is compressed with a certain pressure. During the forming process, the sheet flows under the blankholder. Thus, more homogenous wall thickness is ob-tained.In this study, Titanium Grade 2 sheet is formed as a cone via TPIF-RL method. Optimum forming parameters were determined by Signal/Noise analysis. In addi-tion, finite element analysis of the process was performed. Using 2 bar clamping pressure, 1000 mm/min feedrate, 0.75 mm increment and 15 mm forming tool di-ameter optimum result was obtained. With these optimum parameters, 6% thin-ning occurs on sheet thickness. This new method ensures a homogeneous wall thickness distribution.

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A New Approach to Multi-Stage Incremental Forming Method

Önal,

Seçgin,

Özsert

et al. 2024

Arab J Sci Eng

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Producing vertical edged parts in sheet metal forming methods can cause tears on the sheet. The incremental forming method can allow sheet forming without tears. Forming can be done multi-stage to prevent this tear. Incremental forming method can be used in prototype production. The most important advantages of incremental forming method are that it is fast and inexpensive. In this study, we applied multi-stage forming to the two-point incremental forming-rolling blank holder method. Thus, we have developed a new way: the multi-stage, two-point incremental forming-rolling blank holder method. Parts with vertical edges are produced, and the wall thickness distribution is examined. The work material is a DC04 sheet with a thickness of 0.98 mm. The workpiece is axially symmetrical with a wall angle of 90°. The effect of four different parameters were researched: increment, feed rate, clamping pressure, and angle increment. Three different levels were determined for each parameter. The wall thickness distribution of the parts obtained from the experiments was measured.

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Optimization of Incremental Forming of Low‐Alloy High‐Yield‐Strength HC300LA Sheet Using a Rolling Blank Holder Method

Cited by 5 publications

References 29 publications

Optimization of Titanium Grade 2 sheet forming by roller blank holder method

Optimization of Titanium Grade 2 sheet forming by roller blank holder method

Incremental Forming of Titanium Grade 2 Sheet by TPIF-RL Method

A New Approach to Multi-Stage Incremental Forming Method

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