Abstract
An investigation is carried out to find the near-optimum parametric combination of process variables in zinc coating with considerations of multiple performance characteristics to produce defect-free (such as peel-off, white shading, brightness, blistering, and decolouring) components. The Taguchi L36 (23X313) orthogonal array-based experiment design is used in this study to optimize process parameters. The significance and percentage contributions of each process variable are evaluated using the signal-to-noise (S/N) ratio, ANOVA, response curve, and significance test with Fstatic. Confirmation tests are conducted to see eye to eye on the quality and reliability of the component for winning customer confidence. The study infers that Taguchi off-line quality control is a correct method for optimizing coating process variables with a minimum number of trial runs as compared with the full factorial design in the traditional surface-coating process. The durability of the component in question is confirmed by means of salt-spray testing for aesthetic requirements.
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