Numerical investigation on forming behavior of friction stir tailor welded blanks (FSTWBs) during single-point incremental forming (SPIF) process

2019 ◽  
Vol 41 (10) ◽  
Author(s):  
Shalin Prakashbhai Marathe ◽  
Harit Kishorchandra Raval
Keyword(s):  
Numerical Investigation ◽  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Friction Stir ◽  
Tailor Welded Blanks

Study on Forming Behaviour of Friction Stir Welded Blanks During Single Point Incremental Forming (SPIF) Process

2020 ◽  
Author(s):  
Shalin Marathe ◽  
Harit Raval
Keyword(s):  
Friction Stir Welding ◽  
Incremental Forming ◽  
Single Point ◽  
Base Material ◽  
Forming Limit ◽  
Single Point Incremental Forming ◽  
Cnc Milling ◽  
Forming Process ◽  
Friction Stir ◽  
Welding Processes

Abstract The automobile, transportation and shipbuilding industries are aiming at fuel efficient products. In order to enhance the fuel efficiency, the overall weight of the product should be brought down. This requirement has increased the use of material like aluminium and its alloys. But, it is difficult to weld aluminium using conventional welding processes. This problem can be solved by inventions like friction stir welding (FSW) process. During fabrication of product, FSW joints are subjected to many different processes and forming is one of them. During conventional forming, the formability of the welded blanks is found to be lower than the formability of the parent blank involved in it. One of the major reasons for reduction in formability is the global deformation provided on the blank during forming process. In order to improve the formability of homogeneous blanks, Single Point Incremental Forming (SPIF) is found to be giving excellent results. So, in this work formability of the welded blanks is investigated during the SPIF process. Friction Stir Welding is used to fabricate the welded blanks using AA 6061 T6 as base material. Welded blanks are formed in to truncated cone through SPIF process. CNC milling machine is used as SPIF machine tool to perform the experimental work. In order to avoid direct contact between weld seam and forming tool, a dummy sheet was used between them. As responses forming limit curve (FLC), surface roughness, and thinning are investigated. It was found that use of dummy sheet leads to improve the surface finish of the formed blank. The formability of the blank was found less in comparison to the parent metal involved in it. Uneven distribution of mechanical properties in the welded blanks leads to decrease the formability of the welded blanks.

Single point incremental forming of tailored blanks produced by friction stir welding

2009 ◽  
Vol 209 (2) ◽  
pp. 811-820 ◽  
Author(s):  
M.B. Silva ◽  
M. Skjoedt ◽  
P. Vilaça ◽  
N. Bay ◽  
P.A.F. Martins
Keyword(s):  
Friction Stir Welding ◽  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Friction Stir ◽  
Tailored Blanks

Single Point Incremental Forming of Friction Stir Processed AA6063-O Alloy

2015 ◽  
Author(s):  
Senthil Kumar Velukkudi Santhanam ◽  
Vigneshwaran Ganesan ◽  
Subramanian Pillappan Shanmuganatan
Keyword(s):  
Incremental Forming ◽  
Single Point ◽  
Three Dimensional ◽  
High Capacity ◽  
Numerical Control ◽  
Special Technique ◽  
Single Point Incremental Forming ◽  
Forming Process ◽  
Friction Stir ◽  
Increasing Demand

In the recent manufacturing trend and, in particular, in sheet metal forming, the requirement of customized production is still growing. Incremental forming is a special technique requiring no high capacity presses or set of dies, thus meeting the increasing demand for low volume production and rapid prototyping. The complex three dimensional parts of sheet metals are formed by the computer numerical control (CNC) movement of a simple generative hemispherical tool. In this paper, the single point incremental forming process is performed on friction stir processed AA 6063-O alloy. The process parameters for the experiment are taken based on L9 Orthogonal array. In this paper the maximum wall angle or the formability is investigated on a formed pyramid frusta. It is inferred that Friction stir process has improved the ductility of the aluminium alloy thus contributing to enhanced formability.

scholarly journals Experimental Research on the Behaviour of Metal Active Gas Tailor Welded Blanks during Single Point Incremental Forming Process

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 198
Author(s):  
Valentin Oleksik ◽  
Dan Dobrota ◽  
Sever-Gabriel Racz ◽  
Gabriela Petruta Rusu ◽  
Mihai Octavian Popp ◽  
...  
Keyword(s):  
Optical Measurement ◽  
Incremental Forming ◽  
Single Point ◽  
Welding Process ◽  
Force Transducer ◽  
Point Of View ◽  
Experimental Point ◽  
Single Point Incremental Forming ◽  
Forming Process ◽  
Tailor Welded Blanks

The present paper aims to study the behaviour of Metal Active Gas (MAG) tailor welded blanks during the single point incremental forming process (SPIF) from an experimental point of view. The single point incremental forming process was chosen for manufacturing truncated cone and truncated pyramid shaped parts. The same material (S355) and the same thickness (0.9 mm) were selected for the joining of blank sheets because the main goal of the paper was to study the influence of the MAG welding process throughout the SPIF process. A Kuka robot, equipped with a force transducer and an optical measurement system were used for manufacturing and evaluating the parts by SPIF. The selected output data were major and minor strain, thickness reduction, forces and springback at the SPIF process. Another line test was performed to evaluate the formability in SPIF. The main conclusion of the paper is that during the SPIF process, fractures occur in one side welded blanks even at moderate wall angles, while in the case of double side welded blanks there is a decrease of formability but parts can still be produced at moderate angles (55 degrees) without any problems.

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