Analysis of the Incremental Forming of Titanium F67 Grade 2 Sheet

Daleffe, Anderson; Schaeffer, Lírio; Fritzen, Daniel; Castelan, Jovani

doi:10.4028/www.scientific.net/kem.554-557.195

Cited by 14 publications

(8 citation statements)

References 3 publications

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“…Gatea et al 14 carried out the experimental and FE analysis for ISF process to evaluate the impact of step down, feed rate and tool diameter on formability of titanium grade and grade 2 using GTN damage model. Daleffe et al 15 have analysed ISF of CP-Ti Grade-2 at room temperature and showed that the limit wall angle for the CP-Ti grade 2 sheet of 0.5 mm thickness is 47°. Literature reports that heating during forming process can improve the process performance as it increases formability, improves dimensional accuracy, and reduces forming forces.…”

Section: Introductionmentioning

confidence: 99%

Process capabilities of commercially pure titanium grade 2 formed through warm incremental sheet forming

Kumar

Tandon

2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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Commercially pure titanium (CP-Ti) Grade-2 has many applications due to its good weldability, strength, ductility, formability, and superior corrosion resistance. Although, CP-Ti Grade-2 can be formed at room temperature, however, it has lower ductility at room temperature. Therefore, heat treatment or thermal activation is required to increase its ductility and formability. In this paper, the process capabilities of CP-Ti Grade-2 to form the components through warm incremental sheet forming (ISF) has been investigated. To identify the optimal temperature at which CP-Ti Grade-2 sheets can be incrementally formed, straight groove tests were performed experimentally at various temperatures. Two geometries, namely, varying wall angle truncated cone, and constant wall angle truncated cone were used as test cases to evaluate the formability of CP-Ti Grade-2, in terms of limiting wall angle. The formability was also assessed through forming limit diagram obtained by Finite Element (FE) simulation. With forming limit damage criterion, fracture in the formed component was predicted with FE simulation using Abaqus Explicit software. To assess the process capabilities of CP-Ti Grade-2 sheet formed through warm ISF, thickness distribution, forming forces, geometrical accuracy, and surface roughness were analyzed through both FE simulation and experimental work.

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Section: Introductionmentioning

confidence: 99%

Process capabilities of commercially pure titanium grade 2 formed through warm incremental sheet forming

Kumar

Tandon

2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…The results showed that the surface quality deteriorated by increasing the forming angle. Titanium F67 grade 2 sheet for medical implant was formed by SPIF, and internal and external roughness was measured by Daleffe et al [89]. The roughness of three sheets was measured with a changing angle of 45°, 47°a nd 48°.…”

Section: Forming Anglementioning

confidence: 99%

Review on the influence of process parameters in incremental sheet forming

Gatea

McCartney

2016

Int J Adv Manuf Technol

161

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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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“…Because of their formability properties and light weight, the brass and copper are two materials frequently used for ISF process [24,25]. Titanium alloys well-known for their corrosion resistance and high strength and magnesium alloys for their light weight are used in many industries, thus the parts can be also obtained using incremental forming processes [26,27]. A lot of components from all the industries are made from steel sheets and its derivates, thus these materials are investigated if it is possible to be formed with ISF process, especially cold presing steel like deep drawing and extra deep drawind steel [24,28] There are research to evaluate the possibility to incremental deform the polymer sheets, for a low volume with a low cost production [29].…”

Section: Methodsmentioning

confidence: 99%

Incremental deformation: A literature review

Nasulea

Oancea

2017

MATEC Web Conf.

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Abstract. Nowadays the customer requirements are in permanent changing and according with them the tendencies in the modern industry is to implement flexible manufacturing processes. In the last decades, metal forming gained attention of the researchers and considerable changes has occurred. Because for a small number of parts, the conventional metal forming processes are expensive and time-consuming in terms of designing and manufacturing preparation, the manufacturers and researchers became interested in flexible processes. One of the most investigated flexible processes in metal forming is incremental sheet forming (ISF). ISF is an advanced flexible manufacturing process which allows to manufacture complex 3D products without expensive dedicated tools. In most of the cases it is needed for an ISF process the following: a simple tool, a fixing device for sheet metal blank and a universal CNC machine. Using this process it can be manufactured axis-symmetric parts, usually using a CNC lathe but also complex asymmetrical parts using CNC milling machines, robots or dedicated equipment. This paper aim to present the current status of incremental sheet forming technologies in terms of process parameters and their influences, wall thickness distribution, springback effect, formability, surface quality and the current main research directions.

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Analysis of the Incremental Forming of Titanium F67 Grade 2 Sheet

Cited by 14 publications

References 3 publications

Process capabilities of commercially pure titanium grade 2 formed through warm incremental sheet forming

Process capabilities of commercially pure titanium grade 2 formed through warm incremental sheet forming

Review on the influence of process parameters in incremental sheet forming

Incremental deformation: A literature review

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