ABSTRACT
Steel and aluminium both possess certain properties which make them especially suitable for the processes involved in vehicle bodywork, particularly the forming and shaping of vehicle body parts either by press or by hand, and some of the jointing processes. A malleable metal may be stretched in all directions without fracture occurring, and this property is essential in the processes of rolling, spinning, wheeling, raising, flanging, stretching and shrinking. The chapter exaplains rolling machines such as: Bending rolls, pinch rolls, pyramid rolls, cone rolling machine and pyramid rolls. Ductility depends on tenacity or strength in tension and the ease with which a metal is deformed and is the property which enables a metal to be drawn out along its length, that is drawn into a wire. A U-channel, as the name implies, comprises two right-angled bends, on.
