INVESTIGATION OF FACTORS AFFECTING FRICTION COEFFICIENT AND WEAR CHARACTERISTICS OF HVOF-SPRAYED COATINGS ON RICE HARVESTER BLADES
Keywords:
rice harvester blades, wear, friction coefficientAbstract
The objective of this research was to investigate factors affecting wear and friction coefficient of rice harvester blades. The studied factors included loading weight and coating materials. Wear testing was conducted using the pin-on-disc method (ASTM G99) with three loading weight levels: 20, 40, and 60 N. The coating materials consisted of uncoated rice harvester blades and blades coated with NiSiCrFeB,
WC-Co/NiSiCrFeB, WC-Co, and WC-Cr3C2-Ni using High-Velocity Oxygen Fuel (HVOF) thermal spray coating process. The results indicated that coating surfaces significantly affected the friction coefficient and wear rate of rice harvester blades (p-value < 0.05), with a higher f-value compared to the loading weight factor. This demonstrates that coating surfaces had a significantly greater impact than loading weight on both friction coefficient and wear rate of rice harvester blades.
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