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Unformatted text preview: preheating the tools that come in contact with the part to the same temperature as the work metal. This procedure is most closely associated with forging. 18.11 Sticking friction in metalworking is the tendency for the two surfaces in relative motion to adhere to each other rather than slide. It means that the friction stress between the surfaces exceeds the shear flow stress of the work metal, thus causing the metal to deform by a shear process beneath the surface rather than slip at the surface. Multiple Choice 18.2 - A 18.5 D 18.6 A,D,E,G 18.8 A...
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- Spring '12