A REVIEW – OPTIMIZE THE PROCESS PARAMETER FOR RAW MATERIAL CONSUMPTION FOR SPECIFIED DRY FILM THICKNESS IN FLAME SPRAY COATING ON EXTRUDER SCREW

Mechanical Engineering

Flame spray coating is a coating technique used extensively in industrial application to enhance the performance of engineering component like extruder screw, shafts & plunger ring set. Improved resistance to wear can be achieved, which eventually extend the life of component. Due to its simplicity in process and low initial cost of setup Flame spray coating techniques are widely used for coating on extruder screw. The deposition efficiency then becomes a vital output to survive in today’s competitive market. The deposition efficiency i.e. the raw material consumption depends upon the spraying process parameters. This paper focuses on tracing out various process parameters which has influence on deposition efficiency, coating thickness and quality of coating in thermal spray coating processes. Design of experiment such as Taguchi’s experimental design can be used for the optimizing these process parameters. Analysis of variance can then be useful to identify significant process parameters.

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