Abstract
ABSTRACT TESTS were conducted with five different samples of galvanized steel to determine the variability that exists in the coefficient of friction of wheat on galvanized steel surfaces as a function of pressure and number of trials and to analyze the variation in surface conditions of the galvanized steel surface before and after use. It was determined that the coefficient of friction decreased with both pressure and the number of trials. This variation in the coefficient of friction is believed to be caused by a deposition of waxy paraffin coating on the galvanized surface as the test blades were pulled through the grain sample. Tests conducted with antidynamic tubes within a model bin supported the idea that the coefficient of friction varies with both pressure and the number of times the grain comes in contact with the galvanized surface.
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