Figure 1. shows the rolling operation. Determine the position bn. of the neutral point? Neglect front and back tensions. Additional data: Hardened steel 0.04 μm and rolling temperature -190°C. rolls, surface roughness of the rolls D 0.3 in. F-5tus R=4 in. Fig:1 0.1 in. 7 fus

The engineering stress-engineering strain tensile curve for a stainless steel type 304 alloy is shown. Calculate the constants K and n for the true stress and true strain curve before necking (or = K (&)"). Engineering Stress (MPa) 1000 900- 800- 700- 600- 500- 400- 300- 200- 100- of 0.0 02 0.4 Enginering Strain (mm/mm) 0.6 0.8 1.0

Hi, can you help me solve the attached problem where I am asked to calculate the total force to obtain a component from an initial aluminum bar by using the manufacturing process of cold rolling.

3XPL@!N THE PROCESS @ND PROVIDE EXAMPLES FORMING OPERATIONS 1. Forging is mechanically working or deforming a single piece of a usually hot metal; this may be accomplished by the application of successive blows or by continuous squeezing.   2. Rolling, the most widely used deformation process, consists of passing a piece of metal between two rolls; a reduction in thickness results from compressive stresses exerted by the rolls.   3. Extrusion, a bar of metal is forced through a die orifice by a compressive force that is applied to a ram; the extruded piece that emerges has the desired shape and a reduced cross-sectional area.   4. Drawing is the pulling of a metal piece through a die having a tapered bore by means of a tensile force that is applied on the exit side.