Analytical on the Origin of the Metal Abrasive Wear by Rough Rice

Abstract

We have been working on the metal wearing by flowing paddy from the viewpoint of the physical characteristic of paddy.
We have been got many research reports concerning the metal wearing at the rice handling devices of agricultural machinery, but any reports have not cleared factors involved in wearing.
Some factors of abrasive wearing of metal by paddy are cleared in this study.
1. The longer the distance of friction between metal and paddy, the larger the abrasion, namely, the longer the friction time, the more the wearing.
2. The rougher the surface of paddy, the larger the action of wearing.
3. The larger the contact pressure between paddy and metal, the larger the action of wearing.
4. The metal wearing (W) by paddy may be indicated by the following formula. W=aL^αf^β(γ)^R where L is the friction distance, f is the contact pressure, R is the surface roughness of paddy and a, α, β and γ is the coefficient.