The paper deals with optimization of parameters obtained by corrosion test in a salt spray chamber at plastic-coated sheets, which are used in various areas of economy, e.g. automotive industry. The goal of the experiment was to find out the relation between input parameters (Zn layer, Top+primer, Backout) and output parameter – corroding time by means of Response Surface Methodology (RSM). The experiment was planned with the use of full factorial design. Evaluation of experimental results was processed by means of Minitab 16 statistical software.
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