Heat-assisted incremental sheet forming: a state-of-the-art review

Liu, Zhaobing

doi:10.1007/s00170-018-2470-3

Cited by 59 publications

(24 citation statements)

References 69 publications

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“…The use of the external heating device, i.e. the pre-set forming temperature, can raise the cost, which is the same as that in the metallic system [18]. Therefore, to avoid using external heat to conduct ISF of thermoplastics at room temperature is an effective way to reduce the energy consumption of the process, but this should be based on the premise that the satisfactory parts can be obtained.…”

Section: Energy Consumptionmentioning

confidence: 99%

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Incremental sheet forming of thermoplastics: a review

Zhu

Popov

2020

Int J Adv Manuf Technol

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Incremental sheet forming (ISF) is a promising flexible manufacturing process, which has been tested in sheet forming of various metallic materials. Although ISF-based forming of thermoplastics is relatively new, it has drawn considerable interests and significant progress has been made in recent years. This paper presents a review of concurrent research on the emerging trend of thermoplastic-focused ISF processes. Attention is given to the processing conditions including process setup, process parameters and forming forces. The deformation mechanism and failure behaviour during ISF of thermoplastics are evaluated, which leads to detailed discussions on the formability, effect of different process parameters and the forming quality such as geometric accuracy, surface finish and other consideration factors in ISF of thermoplastics. A comparison of important similarities and differences between ISF of thermoplastic and metallic materials is made. Finally, a brief discussion is provided on the technical challenges and research directions for ISF of thermoplastic materials in the future.

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Section: Energy Consumptionmentioning

confidence: 99%

“…Ai and Long [16] summarised the material fracture mechanism and behaviour in ISF. Taleb-Araghi et al [17], Liu et al [18] and Peng et al [19] reviewed the development of variants of ISF including hybrid ISF, heat-assisted ISF and DSIF.…”

Section: Introductionmentioning

confidence: 99%

Incremental sheet forming of thermoplastics: a review

Zhu

Popov

2020

Int J Adv Manuf Technol

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“…As an example, Duflou et al [14] used dynamic local heating of the sheet material by means of a laser beam applied to the contact zone simultaneously with the forming tool, on the opposite side of the part. Multiple other material heating methods were used over time, with positive results on the part dimensional accuracy, as follows [15]: friction heating a high tool rotational speed of the tool [16], electric heating [17], induction heating [18], warming sheet material by using hot air blowers [19] or hot fluids [20], using a furnace [21] or even combinations of the above methods [22]. Although the improvements due to local or global material heating are confirmed, such methods require auxiliary heating equipment that can be expensive and difficult to handle, and more importantly entail significant energy consumption during forming.…”

Section: Introductionmentioning

confidence: 99%

Achieving Accuracy Improvements for Single-Point Incremental Forming Process Using a Circumferential Hammering Tool

Nasulea

Oancea

2021

Metals

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The paper presents a novel solution for improving the accuracy of the wall area of parts manufactured by single point incremental forming. Thus, a forming tool with a special design that works according to the principle of circumferential hammering is deployed, with a direct improving effect of the forming conditions and consequently of the dimensional accuracy of the part. The research is focused on an experimental study of frustum-of-cone shapes manufactured from sheet metal blanks of DC05 deep drawing steel of 1 mm thickness. A typical customary technological setup is used for the single point incremental forming process, without any additional elements, and two forming tools, a hemispherical and a special one, which use the circumferential hammering effect. Several preliminary tests using both tools were performed in order to prove that part accuracy can be significantly improved by using the circumferential hammering tool. The research was further expanded to investigate the influence on part wall dimensional accuracy of three factors: tool spindle speed, tool feed rate and part dimensional configuration. Using a full factorial plan of experiments the results of 32 test runs were processed. All parts were machined adequately, free of any material fracturing. Based on the achieved machining accuracy of the part walls, precision mathematical models were developed for the prediction of part dimensional accuracy in those areas. The mathematical models were validated by practice, as the predicted accuracies were matched by the experimental results.

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“…One of the variations utilised is the application of heat, where incremental forming processes have been carried out by means of localised heating, achieving a high degree of deformation [5]. The heat-assisted incremental sheet forming (HA-ISF) has been applied to titanium alloys and high strength steel, reaching 600 °C with localized heat that comes from methods such as: laser heat, friction heat, electrical heat and induction heating [6]. In addition, there are studies of incremental shaping applied to stainless steel dental prostheses with a plate thickness of 0.5 mm, allowing to improve the production of custom-made components [7].…”

Section: Introductionmentioning

confidence: 99%

Hot Incremental Forming of Biocomposites Developed from Linen Fibres and a Thermoplastic Matrix

Torres

Ortega

Acosta

et al. 2021

SV-JME

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The use of biodegradable materials has a growing field of application due to environmental concerns, however, scientific research on incremental forming using biomaterials is scarce. Thus, this study focuses on the single point incremental forming (SPIF) process applied to a composite sheet that combines a biodegradable thermoplastic matrix (Solanyl) reinforced with natural fibres (flax). The influence of the process parameters on the final geometry is determined, evaluating the effect of the following factors: step depth, wall angle and temperature reached during the process. Additionally, a heated aqueous medium is incorporated which facilitates the formability of the composite sheets. This method is especially useful for materials that have poor formability at room temperature. The benefits of using controlled heat include the reduction of formation forces applied to the plate, improved accuracy due to the reduction of elastic recovery, and the manipulation of the samples remarkably close to the glass transition temperatures. Through this experimental study with the variables analysed, a maximum shaping depth of 310 mm is obtained. These results confirm that the single point shaping used with bioplastic materials is possible and has positive outcomes for incremental forming.

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Heat-assisted incremental sheet forming: a state-of-the-art review

Cited by 59 publications

References 69 publications

Incremental sheet forming of thermoplastics: a review

Incremental sheet forming of thermoplastics: a review

Achieving Accuracy Improvements for Single-Point Incremental Forming Process Using a Circumferential Hammering Tool

Hot Incremental Forming of Biocomposites Developed from Linen Fibres and a Thermoplastic Matrix

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