Abstract
In this paper, wear mechanism of soft metals rubbed on hard metal is discussed with the consideration of the adhesive term in frictional force of unlubricated component and the effect of surface roughness. In boundary lubrication and unlubrication, metal wear is expressed as followsWs*=W/FdH = kH/1+kH β/τWhere W; Metal wear (mm3), Fd ; Frictional force of Unlubricated component (kg), L; Rubbing distance (mm), H; Maximum height of surface roughness (μ), τ; Shear strength of soft metals (kg/mm2), k, β; Constant value respectively.Wear tests on such soft metals as zinc, cadmium and lead are carried out on the virgin surface of carbon steel plate, varying load and surface roughness of steel plate. The results showed good agreement with the above expression for metal wear.
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