Statistical analysis of wire electrical discharge turning on material removal rate

✍ Scribed by Aminollah Mohammadi; Alireza Fadaei Tehrani; Ehsan Emanian; Davoud Karimi

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 774 KB
• Volume: 205
• Category: Article
• ISSN: 0924-0136
• DOI: 10.1016/j.jmatprotec.2007.11.177

✦ Synopsis

The application of wire electrical discharge machining (WEDM) for machining of precise cylindrical forms on hard and difficult-to-machine materials is presented. At first, the design of a precise, flexible and corrosion-resistant rotary spindle submerged is introduced. The spindle has been mounted on a five-axis wire EDM machine to rotate the workpiece in order to generate free form cylindrical geometries. The material removal rate (MRR) is an important indicator of the efficiency and cost-effectiveness of the process. Several experiments are conducted to consider effects of power, time-off, voltage, servo, wire speed, wire tension, and rotational speed (factors) on the MRR (response). An L 18 (2 1 × 3 7 ) Taguchi standard orthogonal array is chosen for the design of experiments. Analyses of variance (ANOVA) as well as regression analysis are performed on experimental data. The signal-to-noise (S/N) ratio analysis is employed to find the optimal condition.