On the high-speed Single Point Incremental Forming of titanium alloys

Incremental sheet forming of titanium and its alloys has a significant role in modern manufacturing techniques because it allows for the production of high-quality products with complex shapes at low production costs. Stamping processes are a major contributor to plastic working techniques in industries such as automotive, aerospace and medicine. This article reviews the development of the single-point incremental forming (SPIF) technique in titanium and its alloys. Problems of a tribological and microstructural nature that make it difficult to obtain components with the desired geometric and shape accuracy are discussed. Great emphasis is placed on current trends in SPIF of difficult-to-form α-, α + β- and β-type titanium alloys. Potential uses of SPIF for forming products in various industries are also indicated, with a particular focus on medical applications. The conclusions of the review provide a structured guideline for scientists and practitioners working on incremental forming of titanium and titanium alloy sheets. One of the ways to increase the formability and minimize the springback of titanium alloys is to treat them at elevated temperatures. The main approaches developed for introducing temperature into a workpiece are friction heating, electrical heating and laser heating. The selection of an appropriate lubricant is a key aspect of the forming process of titanium and its alloys, which exhibit unfavorable tribological properties such as high adhesion and a tendency to adhesive wear. A review of the literature showed that there are insufficient investigations into the synergistic effect of rotational speed and tool rotation direction on the surface roughness of workpieces.

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High-Speed Single Point Incremental Forming of an Automotive Aluminium Alloy

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.622-623.433 ◽

2014 ◽

Vol 622-623 ◽

pp. 433-439 ◽

Cited By ~ 12

Author(s):

Hans Vanhove ◽

Amirahmad Mohammadi ◽

Yan Song Guo ◽

Joost R. Duflou

Keyword(s):

Aluminium Alloy ◽

Feed Rate ◽

High Speed ◽

Incremental Forming ◽

Single Point ◽

Incremental Sheet Forming ◽

Single Point Incremental Forming ◽

Automotive Applications ◽

Batch Sizes ◽

Discrete Part

Incremental Sheet Forming processes have been characterized by their limited forming speed and accompanying lengthy production time. ISF has therefore been considered a process category suitable for small batch sizes or discrete part production only. The potential for greatly increasing the forming speed of incremental forming processes is studied here by means of axisymmetric incremental forming on a lathe. As an aluminium alloy commonly used in automotive applications, AA5182-O, is of interest for incremental forming at increased speed. In this paper the influence of an increasing feed rate on forming forces, temperature and formability is analyzed.

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Improve the Micro-hardness of Single Point Incremental Forming Product Using Magnetic Abrasive Finishing

Engineering and Technology Journal ◽

10.30684/etj.v38i8a.906 ◽

2020 ◽

Vol 38 (8A) ◽

pp. 1137-1142

Author(s):

Baqer A. Ahmed ◽

Saad K. Shather ◽

Wisam K. Hamdan

Keyword(s):

Vickers Hardness ◽

Feed Rate ◽

Incremental Forming ◽

Single Point ◽

Single Point Incremental Forming ◽

Step Size ◽

Coil Current ◽

Magnetic Abrasive Finishing ◽

Finishing Process ◽

Abrasive Finishing

In this paper the Magnetic Abrasive Finishing (MAF) was utilized after Single Point Incremental Forming (SPIF) process as a combined finishing process. Firstly, the Single Point Incremental forming was form the truncated cone made from low carbon steel (1008-AISI) based on Z-level tool path then the magnetic abrasive finishing process was applied on the surface of the formed product. Box-Behnken design of experiment in Minitab 17 software was used in this study. The influences of different parameters (feed rate, machining step size, coil current and spindle speed) on change in Micro-Vickers hardness were studied. The maximum and minimum change in Micro-Vickers hardness that achieved from all the experiments were (40.4 and 1.1) respectively. The contribution percent of (feed rate, machining step size, coil current and spindle speed) were (7.1, 18.068, 17.376 and 37.894) % respectively. After MAF process all the micro surface cracks that generated on the workpiece surface was completely removed from the surface.

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Hot single-point incremental forming assisted by induction heating

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-015-7439-x ◽

2015 ◽

Vol 82 (5-8) ◽

pp. 1163-1171 ◽

Cited By ~ 29

Author(s):

Amar Al-Obaidi ◽

Verena Kräusel ◽

Dirk Landgrebe

Keyword(s):

Induction Heating ◽

Incremental Forming ◽

Single Point ◽

Single Point Incremental Forming

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Investigations into Enhanced Formability of AA5083 Aluminum Alloy Sheet in Single-Point Incremental Forming

Journal of Materials Engineering and Performance ◽

10.1007/s11665-021-05455-3 ◽

2021 ◽

Vol 30 (2) ◽

pp. 1289-1305

Author(s):

Gautam Kumar ◽

Kuntal Maji

Keyword(s):

Aluminum Alloy ◽

Incremental Forming ◽

Single Point ◽

Alloy Sheet ◽

Single Point Incremental Forming ◽

Aluminum Alloy Sheet ◽

Aa5083 Aluminum Alloy

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Multiobjective optimization of process variables in single-point incremental forming using grey relational analysis coupled with entropy weights

Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications ◽

10.1177/14644207211020401 ◽

2021 ◽

pp. 146442072110204

Author(s):

Abdulmajeed Dabwan ◽

Adham E Ragab ◽

Mohamed A Saleh ◽

Atef M Ghaleb ◽

Mohamed Z Ramadan ◽

...

Keyword(s):

Grey Relational Analysis ◽

Incremental Forming ◽

Single Point ◽

Sheet Forming ◽

Incremental Sheet Forming ◽

Numerical Control ◽

Single Point Incremental Forming ◽

Process Variables ◽

Relational Analysis ◽

Grey Relational

Incremental sheet forming is a specific group of sheet forming methods that enable the manufacture of complex parts utilizing computer numerical control instead of specialized tools. It is an incredibly adaptable operation that involves minimal usage of sophisticated tools, dies, and forming presses. Besides its main application in the field of rapid prototyping, incremental sheet forming processes can be used for the manufacture of unique parts in small batches. The goal of this study is to broaden the knowledge of the deformation process in single-point incremental forming. This work studies the deformation behavior in single-point incremental forming by experimentally investigating the principal stresses, principal strains, and thinning of single-point incremental forming products. Conical-shaped components are fabricated using AA1050-H14 aluminum alloy at various combinations of fundamental variables. The factorial design is employed to plan the experimental study and analysis of variance is conducted to analyze the results. The grey relational analysis approach coupled with entropy weights is also implemented to identify optimum process variables for single-point incremental forming. The results show that the tool diameter has the greatest effect on the thinning of the SPIF product, followed by the sheet thickness, step size, and feed rate.

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