An Investigated of Single Point Incremental Forming Formability

2014 ◽  
Vol 950 ◽  
pp. 96-100
Author(s):  
Kittiphat Rattanachan ◽  
Chatchapol Chungchoo
Keyword(s):  
Industrial Application ◽  
Steel Sheet ◽  
Incremental Forming ◽  
Single Point ◽  
Experimental Result ◽  
Incline Angle ◽  
Single Point Incremental Forming ◽  
Wall Surface ◽  
Surface Fracture

An industrial application of single point incremental forming (SPIF) process is dramatically increasing due to the flexibility and economically of the SPIF process. In this paper, the maximum wall’s incline angle without tearing of the SS400 steel formed sample was investigated as the SPIF formability. The SS400 steel sheet 0.8 mm thickness was formed into the 100 mm diameter cone shape with 90o, 75oand 60owall’s incline angle. The forming depth was progressed step by step until the cone wall surface fracture was occurred, then the experimental was stopped. The experimental result shown the formability limited of the SS400 steel sheet was approx. 60owall’s incline angle. This could be used as the initial utilized data in designing the single point incremental forming parts.

Improvement of Formability in Single Point Incremental Forming of DP 1000 Steel by Induction Heating

2015 ◽  
Vol 794 ◽  
pp. 67-74
Author(s):  
Amar Al-Obaidi ◽  
Verena Kräusel ◽  
Dirk Landgrebe
Keyword(s):  
Induction Heating ◽  
Steel Sheet ◽  
Incremental Forming ◽  
Heating Temperature ◽  
Single Point ◽  
Operational Efficiency ◽  
Single Point Incremental Forming ◽  
Lower Side ◽  
Wall Angle ◽  
Optimum Heating

This paper provides results from experiments to improve formability of DP 1000 steel in forming a complex profiles in single point incremental forming with induction heating. High attention is rewarded to the straight effect of induction power and tool settings, in order to determine if the heating temperature is sufficient for raising the formability. The steel sheet is formed by a punch in the upper side and synchronized by induction heating for the sheet on the lower side. Investigations show a maximum achievable wall angle of 70°, which was accomplished at 20 kW induction power for the two formed shapes pyramid and cone. The operational efficiency improved by reducing both the forming time and the induction power required obtaining an optimum heating temperature for the sheet blank. The presented method can be used to increase the formability of difficult-to-form metals by using a simple setup.

scholarly journals Residual Stresses and Surface Roughness Analysis of Truncated Cones of Steel Sheet Made by Single Point Incremental Forming

Metals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 237 ◽  
Author(s):  
Ján Slota ◽  
Bogdan Krasowski ◽  
Andrzej Kubit ◽  
Tomasz Trzepiecinski ◽  
Wojciech Bochnowski ◽  
...  
Keyword(s):  
Residual Stress ◽  
Steel Sheet ◽  
Incremental Forming ◽  
Single Point ◽  
Testing Machine ◽  
Slope Angle ◽  
Diffraction Method ◽  
Uniaxial Tensile ◽  
Stress Profile ◽  
Single Point Incremental Forming

The dimensional accuracy and mechanical properties of metal components formed by the Single Point Incremental Forming (SPIF) process are greatly affected by the prevailing state of residual stress. An X-ray diffraction method has been applied to achieve an understanding of the residual stress formation caused by the SPIF process of deep drawing a quality steel sheet drawpiece. The test object for an analysis of residual stress distribution was a conical truncated drawpiece with a slope angle of 71° and base diameter of the cone of 65 mm. The forming process has been carried out on a 3-axis HAAS TM1P milling machine. Uniaxial tensile tests have been carried out in the universal tensile testing machine to characterize the material tested. It was found that the inner surface of the drawpiece revealed small linear grooves as a result of the interaction of the tool tip with the workpiece. By contrast, the outer surface was free of grooves which are a source of premature cracking. The stress profile exhibits a nonlinear distribution due to different strengthening of the material along the generating line of the truncated conical drawpiece. The SPIF parts experienced a maximum residual stress value of about 84.5 MPa.

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

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.

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

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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