Question

A disk is to be manufactured from fine iron powder. It is desired that its final density theoretical (bulk) density. The volume shrinkage sintered products are shown in the Figure 6 90% of its after sintering be fnsions (a) What is the required pressure for compacting? (1.5 P) 20 25 mm 60 mm Figure 6 0 200 400 600 800 1000 1200 Density of iron -0.2 Density of copper Apparent (b) What should be the volume of powder to start with? (a Pt) Copper powder, coarse 3.49 gfom 10.1 Copper powder, fine144 e iron powder, coarse2.75 1.40 o Iron powder, Sne 20 40 60 80 Compacting pressure (tons/in Figure 7 Density of copper- and iron-powder compacts as a function of compacting pressure. Density greatly influences the mechanical and physical properties of P/M parts. Source After F.V. Lenel 100 c) Draw a 2-D sketch for the punch and the die cavity and provide dimensions (diameters, lengths/depth) for them using the above data. (1.5 Pt)

Answer 1