OPTIMIZATION OF POWDER COATING PROCESS PARAMETERS IN MILD STEEL (SPCC-SD) TO IMPROVE DRY FILM THICKNESS

This study presents a comprehensive review of the improved optimization for powder coating process variables in mild steel (SPCC-SD). The effective thickness of the dry film thickness (DFT) keeps a significant influence on the critical protection of mild steel against rust. In the powder coating process, the variable thickness is one of the primary and difficult objectives to accurately control the desired consistency. This empirical study properly uses RAL 7040 epoxy-polyester with the required thickness between 70-100 microns. This empirical study aims to reasonably achieve the optimal value of the effective thickness of the powder layer from specific combinations of specified process criteria. Practical experiments were properly conducted out manipulating an orthogonal Taguchi L16 array of independent variables; program, distance, application method, and the number of layers. This optimization method has been successfully upgraded. The average thickness of the powder coating layers reaches 84.85 microns. For a given limit, the application-method of typically preventing the determined cause correctly examined efficiently provides the most significant effect on effective thickness with an S/N ratio of 0.91. In the future, the relevant research may use our corresponding results to improve the powder coating procedure for other significant impacts.

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An Effect of Coating Parameters to Dry Film Thickness in Spray Coating Process

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.709.95 ◽

2016 ◽

Vol 709 ◽

pp. 95-98 ◽

Cited By ~ 1

Author(s):

Mutcharin Choikhrue ◽

Suksan Prombanpong ◽

Pinet Sriyotha

Keyword(s):

Film Thickness ◽

Rotational Speed ◽

Manufacturing Industry ◽

Spray Coating ◽

Coating Process ◽

Rotating Speed ◽

Nozzle Size ◽

Relationship Of ◽

Dry Film Thickness ◽

Dry Film

In cookware manufacturing industry, spray coating process plays an important role both in function and appearance quality of a product. Typically, Teflon (PTFE) is used for interior coating to increase corrosive and nonstick. Practically, nozzle size and spray time are crucial variables to dry file thickness (DFT) in the process. In mass production, a product is mounted on a rotating spindle which installed on the conveyor and moves pass the spray guns. Thus, the rotating speed is also a potential variable to the DFT. Thus, the objective of this paper is to explore a relationship of these abovementioned three variables i.e. nozzle size, spray time, and rotational speed to dry film thickness After that the optimal condition such that the required DFT is met will be determined. To achieve this goal, the experimental design technique including analysis of variance (ANOVA) is employed in this study. It is found that each of the three variables affects the DFT. The higher of spray time, nozzle size, and rotational speed, the more coating thickness onto the part.

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