Development of novel tools for electricity-assisted incremental sheet forming of titanium alloy

Liu, Runze; Lü, Bin; Xu, Dongkai; Chen, Jun; Chen, Fei; Ou, Hengan; Long, Hui

doi:10.1007/s00170-015-8011-4

Cited by 53 publications

(26 citation statements)

References 17 publications

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“…Moreover, the yield strength in the tool-blank contact zone was reduced, so the wall angle and formability of magnesium alloy AZ31 increased. Recently, Liu et al published a paper in developing electricity-assisted ISF by using new forms of ISF tooling with cooling channels to form titanium Ti6Al4V sheets with improved formability to this hard-to-form material [33].…”

Section: Forming Temperaturementioning

confidence: 99%

Review on the influence of process parameters in incremental sheet forming

Gatea

McCartney

2016

Int J Adv Manuf Technol

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153

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Incremental sheet forming (ISF) is a relatively new flexible forming process. ISF has excellent adaptability to conventional milling machines and requires minimum use of complex tooling, dies and forming press, which makes the process cost-effective and easy to automate for various applications. In the past two decades, extensive research on ISF has resulted in significant advances being made in fundamental understanding and development of new processing and tooling solutions. However, ISF has yet to be fully implemented to mainstream high-value manufacturing industries due to a number of technical challenges, all of which are directly related to ISF process parameters. This paper aims to provide a detailed review of the current state-of-the-art of ISF processes in terms of its technological capabilities and specific limitations with discussions on the ISF process parameters and their effects on ISF processes. Particular attention is given to the ISF process parameters on the formability, deformation and failure mechanics, springback and accuracy and surface roughness. This leads to a number of recommendations that are considered essential for future research effort.

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Section: Forming Temperaturementioning

confidence: 99%

Review on the influence of process parameters in incremental sheet forming

Gatea

McCartney

2016

Int J Adv Manuf Technol

Self Cite

153

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“…By employing heat-assisted methods, including laser [12], electricity current [52], hot-air influx [53], or direct heat transfer [54] to raise the temperature in the forming area of the sheet, higher material forming limit and geometric accuracy can be achieved. The reason is obvious because under heatassisted processing condition, the microstructure of the material can be altered and softened material will yield under lower forming forces, which will postpone the occurrence of the tearing fracture, as explained by Gupta and Jeswiet [27].…”

Section: Materials Mechanical Propertiesmentioning

confidence: 99%

A review on material fracture mechanism in incremental sheet forming

Long

2019

Int J Adv Manuf Technol

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In incremental sheet forming (ISF), including single point incremental forming (SPIF) and double side incremental forming (DSIF), the material formability can be significantly enhanced when compared with conventional sheet forming processes. The material deformation in ISF is far more complicated because of the combined material deformation under stretching, bending, shearing, and cyclic loading, with an additional effect of compression in DSIF. Despite extensive investigation on material deformation during ISF, no theory has yet been widely agreed to explain different types of the material fracture behavior observed in ISF experiments. This paper presents a comprehensive review on the formability enhancement in ISF and proposes possible fracture mechanisms explaining the different types of fracture behavior observed in the experimental investigations. Discussions are presented to outline the current research progress and possible solutions to overcome the current ISF process limitations because of the material processing failure due to fracture.

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“…erefore, domestic and foreign scholars have put forward some new composite technologies, such as two-point incremental forming [5], electric auxiliary single-point incremental forming [6], and laser-assisted single-point incremental forming [7], in order to avoid defects by changing the magnitude and action mode of the forming force. e ultrasonic vibratory plastic forming technology is superior to the ordinary plastic forming technology in regard to both difficult-to-form materials and precision forming and is specifically expressed in two aspects: first, it can significantly reduce the yield stress and flow stress; second, it can improve the lubrication effect and change the friction mechanism.…”

Section: Introductionmentioning

confidence: 99%

Influences of Process Parameters and Vibration Parameters on the Forming Force in the Ultrasonic-Assisted Incremental Forming Process

Bai

Yang

et al. 2018

Advances in Materials Science and Engineering

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In the field of plastic forming, ultrasonic vibration has the advantages of small forming force and high forming quality, and it has been introduced into a single-point incremental plastic forming technique with high flexibility and high precision. The ultrasonic vibration single-point incremental compound forming technology with all the above advantages has been achieved. To reveal the variation tendency of the forming force under ultrasonic vibration and single-point incremental coupling, the process parameters (layer spacing, tool head radius, and feed rate) and vibration parameters (frequency and amplitude) on the forming force of the composite technology were quantitatively analyzed by theory, simulation, and experiment. The simulation and experimental results showed that ultrasonic vibration can significantly reduce the forming force of the composite technology. Compared with the simulation results, the theoretical results are not only closer to the experimental results but also have a shorter computation time and better prediction effect on the forming force. The change in the process parameters has a linear effect on the forming force, the nonlinearity of the vibratory parameters influences the forming force, and the frequencies and amplitudes in a suitable range allow the forming force to reach a minimum value. These conclusions have some significance for further studies on the ultrasonic vibratory single-point incremental composite forming technology.

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Development of novel tools for electricity-assisted incremental sheet forming of titanium alloy

Cited by 53 publications

References 17 publications

Review on the influence of process parameters in incremental sheet forming

Review on the influence of process parameters in incremental sheet forming

A review on material fracture mechanism in incremental sheet forming

Influences of Process Parameters and Vibration Parameters on the Forming Force in the Ultrasonic-Assisted Incremental Forming Process

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