Analysis of the Effect of Wire Electric Dischage Machining Process Parameters for the Formation of High Speed Steel Form Tool
Kashif Ishfaq 1  
Nadeem Ahmad Mufti 1  
Jawad Ahmad 2  
Muhammad Sajid 2  
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University of Engineering and Technology, Lahore, 54000
University of Engineering and Technology, Taxila, 47080
Publish date: 2018-03-01
Adv. Sci. Technol. Res. J. 2018; 12(1):89–98
The use of form tools are growing in industry owing to their inherent advantage of improving productivity. However, the accurate formation of form tool profile is really a tedious task. In this research work, wire electric discharge machining (WEDM) process has been used for the generation of form tool. Pulse on-time, pulse off-time, servo voltage, wire tension, flushing pressure have been considered as input parameters whereas tool geometry (clearance angle, included angle), surface roughness and material removal rate are the selected responses. Response surface methodology (RSM) (Box Bhenken experimental design) technique has been used for design of experiments. Analysis of Variance (ANOVA) has shown that pulse on-time and pulse off-time are the two influential control factors for material removal rate (MRR), surface roughness (Ra), clearance angle and included angle. Contour plot analysis has been performed to find out the optimal ranges of the most influential control factors for each response characteristic.
Muhammad Sajid   
University of Engineering and Technology Taxila, Industrial Engineering Department, 47080 Taxila, Pakistan