Brass 70/30 and Incremental Sheet Forming Process

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

doi:10.4028/www.scientific.net/kem.554-557.1419

Cited by 9 publications

(8 citation statements)

References 20 publications

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“…In the second experiment, the results showed a small effect of stepdown on the maximum wall angle [6]. Many investigations have proved that an increased step-down has a detrimental effect on the ISF formability [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model

Gatea

Lü

et al. 2018

Int J Mater Form

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The incremental sheet forming (ISF) process is considered as a feasible solution for forming a variety of small batch and even customised sheet components. The quality of an ISF product is affected by various process parameters, e.g. sheet material, stepdown, feed rate, tool diameter and lubricant. To produce an ISF part of sufficient quality and accuracy without defects, optimal parameters of the ISF process should be selected. In the present work, experiments and FE analyses were conducted to evaluate the influence of the main ISF process parameters including the step-down, feed rate and tool diameter on the formability and fracture of two types of pure Ti (grade 1 and 2). The Gurson-Tvergaard-Needleman (GTN) damage constitutive model with consideration of stress triaxiality was developed to predict ductile fracture in the ISF process due to void nucleation, growth and coalescence. It was found that the ISF parameters have varying degrees of effect on the formability and fracture occurrence of the two types of pure Ti, and grade 2 pure Ti sheet is more sensitive than grade 1 Ti sheet to the forming parameters due to low ductility.

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Section: Introductionmentioning

confidence: 99%

Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model

Gatea

Lü

et al. 2018

Int J Mater Form

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“…An experimental study using aluminium Al3003-0 was undertaken by Duflou et al [45] to measure the force in SPIF. It was noticed that the vertical step size had the least significant impact, according to the study by Fritzen et al [41] to address the behaviour of 30/70 brass sheet in ISF. When the vertical step was decreased to 0.5 mm, there was a gain of 1°in the forming angle with a 100-mm depth without failure.…”

Section: Incremental Depth (Step Size)mentioning

confidence: 99%

“…It was possible to produce shapes with wall slope of up to 80°and a depth of up to 70 mm from sheet metal blanks no thicker than 1.2 mm by using a simple tool. The behaviour of brass 70/30 sheet under ISF conditions was addressed by Fritzen et al [41] with the consideration of the following parameters: wall angle, step depth and tool path strategy. Experimental tests explained that the spiral tool path yielded a greater forming angle as compared with the traditional tool path.…”

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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“…A a lot of researchs regarding diferent topics have been developed [24]. 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].…”

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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Brass 70/30 and Incremental Sheet Forming Process

Cited by 9 publications

References 20 publications

Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model

Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model

Review on the influence of process parameters in incremental sheet forming

Incremental deformation: A literature review

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