MECHANICAL WORKING OF METALS UNIT – 2 MECHANICAL WORKING OF METALS By S. SAMPATH KUMAR Mechanical Engineering Department Assistant Professor SRM University

Hot rolling Cold rolling

UNIVERSAL MILL

Hot Forging Cold Forging

Types of Forging Die’s Open die Impression die Flash less

EXTRUSION Direct Extrusion Indirect Extrusion

Sheet metal operations Blanking Piercing Punching Trimming Stretch forming Shearing Bending Tube forming Embossing coining

Stretch forming is a metal forming process in which a piece of sheet metal is stretched and bent simultaneously over a die in order to form large contoured parts. Stretch forming is performed on a stretch press, in which a piece of sheet metal is securely gripped along its edges by gripping jaws.