Effect of White Metal Coating on Bore Bearing Profile Performance of (Rotating Journal Inside Shell)

This paper was focusing on the study the effect of white metal alloys coating on rotary journals because these journals are subjected to corrosion. And usually, the corroded bearings are losing the operational properties, for this reason, these bearings needed for rehabilitation again by coating the rotary parts with the appropriate thickness. In order to ensure effective conductivity via the two solid zones the rotary journals and coating layers (base metal and white metal alloys coating) to get rid of the oil temperature. White metal coating with different depth was used between mating surface and the heat conduction equation was applied at both regions of the rotating part with suitable boundary condition. The results show that the optimum non-dimensional thickness for white metal coating is (0.25), which improve the properties of the metals by giving the best get rid of oil temperature. Also, it increases the non-dimensional friction force by increasing the non-dimensional thermal conductivity. As well as the increasing of Non-dimensional maximum oil and bush temperature which in turn decreases the Sommerfeld number, while increasing the non-dimensional white metal coating thickness lead to increase the Sommerfeld number and non-dimensional friction coefficient.