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 F static. 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.
