Incremental Sheet metal Forming (ISF) is a reliable process of converting a blank to work piece with better outputs compared to conventional forming process. The flexibility of ISF in producing the rapid prototype based on the customer needs is increased which is also desirable in the industry. But Single Point Incremental Forming (SPIF) process takes more time to form a product and hence the longer time is a barrier in implementing this process in industries. In this research work, the ISF process was made on sheet metal SS 202 using a newly designed multi-point tool and the obtained outputs were compared with the same material of sheet metal formed by traditionally available single point tool. This Multi Point Incremental Forming (MPIF) process takes lesser process time to give better formability, improved wall angle and good surface roughness. The input process parameters selected for the process are type of tool, speed, feed, Vertical Step Depth (VSD), and lubrication. They are arranged by using the taguchi Design of Experiments (DOE) approach. The responses considered are wall angle, formability, surface roughness, spring back and forming time. The multiple outputs obtained were optimized by Grey Relational Analysis (GRA) to predict the superior parameter. Confirmation test was also made to validate the output result. Fractography analysis was carried out to predict the fracture mechanism obtained during the forming process. The surface topography was also made on the surface of the formed area of the sheet metal. This research work concludes that newly designed MPIF outperforms SPIF.
Aim: To remove the colour and COD of two reactive dyes namely reactive blue and yellow by Fenton and modified Fenton processes. Materials and Methods: The total number of groups used in this study is two (Control group N = 16 and Experimental group N = 16).The sample size was taken as 16 after being calculated for a pre-test power of 80% with an alpha value of 0.05 in clinical.com. The removal of colour and COD of two reactive dyes by Fenton process and modified fenton process was carried out. Results and Discussion: Colour removal upto 90% and 95% by Fenton and modified Fenton Processes respectively. The best COD removal efficiencies were 65.54 %, and 57.92% in the case of reactive yellow and reactive blue dyes in the Modified Fenton Process respectively. In the modified fenton process steel scrap is replaced instead of FeSO4. Conclusion: Compared to the Fenton process, the modified Fenton process has more percentage of colour and COD removal within the limits of the study.
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