308806 Lecture Notes - Lecture 10: Wire Drawing, London Underground T Stock, Roll Forming

• School: Curtin University
• Department: Mechanical Engineering
• Course: 308806
• Professor: Alokesh Pramanik

Document Summary

Bulk deformation (mostly hot): rolling, forging, extrusion, drawing (wire, bar, tube), other squeezing processes. Sheet-metal forming (cold): bending, shearing, drawing (sheet, plate), stretching. Wire, bar and tube drawing: work pulled through die opening. Sheet-metal forming processes: bending, shearing, drawing (including stretching) Recrystallization temperature varies and depends on material chemical composition, material melting temperature and prior %cw. Operations on one sheet (0. 4-6mm) or plate stock. Usually cold work, some operations warm, rarely hot. Performed on various presses, except roll bending, stretching and roll forming. Plastic deformation (straining) of metals around a linear axis with little or no change in surface area. Multiple bends can be made simultaneously, but to be classified as true bending each axis must be linear and independent of the other. If multiple bends are made with a single die, the process is called forming. When the axes of deformation are not linear or are not independent, the process is known as drawing.