Analysis on surface roughness of Al-Mg alloy in single point incremental forming (SPIF)

2020 ◽  
Author(s):  
Manish Oraon ◽  
Vinay Sharma ◽  
Manish Kr. Roy
Keyword(s):  
Surface Roughness ◽  
Incremental Forming ◽  
Single Point ◽  
Mg Alloy ◽  
Single Point Incremental Forming

Parameter optimization and texture evolution in single point incremental sheet forming process

2019 ◽  
Vol 234 (1-2) ◽  
pp. 126-139 ◽  
Author(s):  
Shamik Basak ◽  
K Sajun Prasad ◽  
Amarjeet Mehto ◽  
Joy Bagchi ◽  
Y Shiva Ganesh ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Process Parameters ◽  
Regression Models ◽  
Incremental Forming ◽  
Single Point ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Single Point Incremental Forming ◽  
Input Process ◽  
Truncated Cone

Prototyping through incremental sheet forming is emerging as a latest trend in the manufacturing industries for fabricating personalized components according to customer requirement. In this study, a laboratory scale single-point incremental forming test setup was designed and fabricated to deform AA6061 sheet metal plastically. In addition, response surface methodology with Box–Behnken design technique was used to establish different regression models correlating input process parameters with mechanical responses such as angle of failure, part depth per unit time and surface roughness. Correspondingly, the regression models were implemented to optimize the input process parameters, and the predicted responses were successfully validated at the optimal conditions. It was observed that the predicted absolute error for angle of failure, part depth per unit time and surface roughness responses was approximately 0.9%, 4.4% and 6.3%, respectively, for the optimum parametric combination. Furthermore, the post-deformation responses from an optimized single point incremental forming truncated cone were correlated with microstructural evolution. It was observed that the peak hardness and highest areal surface roughness of 158 ± 9 HV and 1.943 μm, respectively, were found near to the pole of single-point incremental forming truncated cone, and the highest major plastic strain at this region was 0.80. During incremental forming, a significant increase in microhardness occurred due to grain refinement, whereas a substantial increase in the Brass and S texture component was responsible for the increase in the surface roughness.

The Effect of Lubricants and Material Properties in Surface Roughness and Formability for Single Point Incremental Forming Process

2014 ◽  
Vol 979 ◽  
pp. 359-362
Author(s):  
Nuttaphong Sornsuwit ◽  
Sunthorn Sittisakuljaroen
Keyword(s):  
Surface Roughness ◽  
Adhesive Wear ◽  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Forming Process ◽  
Sheet Surface ◽  
Air Blowing ◽  
Asymmetric Shape ◽  
High Roughness

The single point incremental forming (SPIF) is a manufacturing process which allows small batch and asymmetric shape fabrication. The research focuses on its applications by consider surface roughness and formability. The surface roughness of specimen was resulted by the influence obtained between tool and specimen, where the lubricant played a significant role during the forming process, as well as material elongation as a mechanical property governed the formability of metal sheet. Surface roughness tester, SEM, EDS and profilometer were used for the characterizations. The results showed that low roughness value (Ra) of SUS 304 and SUS 316L obtained by applying air blowing as a lubricant, while Ti Gr2 could obtain low roughness by using MoS2. The behavior of wear was an adhesive wear which transfer to an abrasive wear. SUS 304 and SUS 316L sheet of test specimens achieved higher depth in forming by air lubricant and MoS2, and Ti Gr2 sheet revealed a better formability with MoS2. Furthermore, the highest depth was correlated with high roughness value for each material.

The Influence of Temperature on Secondary Forming of Titanium Gr 2 Sheet by Use of Single Point Incremental Forming

2014 ◽  
Vol 979 ◽  
pp. 351-354
Author(s):  
Nuttaphong Sornsuwit ◽  
Sunthorn Sittisakuljaroen
Keyword(s):  
Surface Roughness ◽  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Forming Process ◽  
Stress Relieving ◽  
Different Temperatures ◽  
Influence Of Temperature On ◽  
Metal Forming Process ◽  
High Flexibility

The single point incremental forming (SPIF) is a sheet metal forming process with high flexibility on manufacture of each individual workpiece. However, it usually requires more processing time than a conventional forming method and is important to process with appropriate parameters. This study is to investigate the influence of different temperatures on continuing secondary forming of Ti Gr2 sheet, employed the stress relieving and annealing temperature after primary forming. The deformed parts were examined on the following criteria; internal contact surface roughness, microhardness and sectional microstructure. Stress relieving and annealing temperatures of 580°C and 780°C were applied to the formed parts prior to their secondary forming. It is found that the surface roughness increased from Ra 2.104 μm and 2.498 μm to Ra 2.55 μm and 3.18 μm respectively after secondary forming. The formability of 25 mm radius test specimens remained at 12 mm depth with limited obvious change.

The Effected of Single Point Incremental Forming Process Parameters on the Formed Part Surface Roughness

2014 ◽  
Vol 979 ◽  
pp. 335-338
Author(s):  
Kittiphat Rattanachan ◽  
Chatchapol Chungchoo
Keyword(s):  
Surface Roughness ◽  
Sheet Metal ◽  
Process Parameters ◽  
Feed Rate ◽  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Tool Rotational Speed ◽  
Forming Process ◽  
Inner Surface

The single point incremental forming process (SPIF) are suited for sheet metal prototyping, because it is a low cost production process that produces sheet metal part without any used of die, and easy to adjust the part’s geometry by change toolpath. But the quality of forming parts is still in doubt. In some applications, such as mould cavity for rapid mould and the medical parts, in this case the inside surface roughness plays an importance role. In this paper, the SPIF process parameters that affected to the inner surface roughness were experimental studied. The investigated parameters are composing of tool feed rate, side overlap, depth step and tool radius. The 2k-p factorial experimental design was used to analyze the interaction between each parameter. The results showed that increasing feed rate and depth step decreased inner surface roughness. Reducing tool rotational speed and feed rate reduced inner surface roughness. So increasing depth step with decreasing side overlap reduced inner surface roughness. The large tool radius and lower side overlap improved inner surface roughness. The large tool radius and higher depth step improved inner surface roughness. And last, reducing tool rotational speed with larger tool radius, the inner surface roughness is decreased.

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