Experimental Study On Powder Coated Surface With Polydur Zinc Based Filler
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Date
2022-07-29
Authors
Lim, Jou Wyn
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Powder coating is commonly used in industry to provide a smooth surface
finish and protection from the atmosphere. To fix minor defects on metal surface,
Polydur Zinc based filler is applied on the surface of the metal to achieve smooth
surface before powder coating. However, orange peel is one of the common defects
found after curing process and it result in high rejection rate. The aim of this research
is to study the parameter influencing the surface after curing process. The effect on
surface was investigated using a two-level fractional factorial design with five factors
and two variation levels. The tested factors were material, thickness, voltage, curing
time and heat profile. The response of surface roughness was used to investigate the
orange peel. The effect of each parameter on orange peel was studied using ANOVA
and Regression Analysis. Optimal combination of parameters was found for optimum
response characteristics. The optimum combination was verified through the
experiment, and the fractional factorial design method have successfully improved the
quality of powder coating.