Gauging wear

This type of wear is caused by extremely high-stress battering or impact that tends to cut or gouge large wear fragments from the surface of the metal. This service is encountered in certain applications in the fields of earthmoving, mining, quarrying, oil-well drilling, steelmaking, cement and clay product manufacture, railroading, dredging and lumbering, and undoubtedly other industries. When hard, abrasive products are crushed, battered, or pounded under extremely high stress, rapid deterioration of the contact surfaces can be expected unless specific steps are taken to prevent this problem.
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