Research on Pitting Strength under Rolling Contact of a Structual Mild Steel

Wear may be defined as the unwanted removal of solid material from rubbing surface and it contains diverse phenomena such as adhesive, abrasive, surface fatigue, seizing etc. But, in general, one of the these types of wear does not occur individually, but two or three types of wear occur together. Therefore, wear mechanisms of metal have been already studied by many investigators for various material under the simple condition. But, there are few basic studies under the actual condition. In this paper, the present investigators have studied (friction speed and lubricating method are constant) the relationship of the Hertz's stress Pm on pitting of a structual mild steel with carbon 0.118% preceded by normalized at 900℃ through measurement of wear loss and observation of wear surface.