EXPERIMENTAL INVESTIGATION OF CHEMICAL ETCHING ON EN-5 STEEL USING NITRIC ACID

Hardeep Singh, Charnjit Singh Kalra, Rahul Mehra

Abstract: This experimental investigation analyses the influence of etching conditions on material minimum overcut area during chemical etching process of EN5 steel with etchant nitric acid. Analysis of variance (ANOVA) is employed to investigate the influence of time, temperature and concentration on minimum overcut area of the material. The experiments was conducted to varying the parameters of etching process like temperature from 200 c to 300 c, Time from 2 hrs to 6 hrs and concentration 10% to 30% are studied in details according to Taguchis design of experiments. At last results are analyzed using Taguchi, ANOVA and parametric optimization is done for minimum overcut area of material. From the experimentation, it is concluded that for etching of EN-5 steel optimum machining condition for minimum overcut area with Time (2hrs), Temperature (200 c), and Concentration (10%)

Keywords: Anova, Overcut Area, Taguchi, Etching, EN-5

DOI: https://doi.org/10.15623/ijret.2014.0306008