Localised adhesive welding with subsequent spalling and roughening of rubbing metal surfaces as a result of excessive friction and metal to metal contact at high spots.
A mold defect when the metal mold material creates friction upon itself from rubbing.
Wear away by friction. When a cutting tool becomes dull or the machined material is not suitable for cutting process used the result can be a very poor and uneven finish that looks more like mechanical wear than a machined surface.
A wearing away or seizure of two contact surfaces caused by friction.
A condition that results from excessive friction between metal surfaces. It creates surface deformation(s) and can result in temporary adhesion. Gray iron is renowned for its resistance to galling.
A form of wear in which seizing or tearing of the gear or bearing surface occurs. ( 099)
metal condition that occurs between the facing surfaces of two mating metal products. Excessive friction between the high spots of these two products results in momentary adhesion and subsequent surface deterioration.
Damage to the surfaces of materials sliding in contact with each other, usually caused by the localised welding together of high spots. Common for materials like stainless steel, aluminium alloys and titanium.
A condition created by like-metal surfaces rubbing together. ( Click here for full definition.)
Friction between a case and sizing die producing roughness on the case and case metal deposited on the die surface.
Galling can occur when metal parts, such as the threads of nuts and bolts, are forced together and rubbing generates friction among the asperities (high spots) on the surface. The friction causes heat, which is mainly isolated to these asperities. The asperities weld together but further displacement causes these tiny welds to break, which makes the surface even rougher, creating more opportunity for friction.