During the downward motion of the punch 18, as illustrated in FIG 4, the pressure exerted by the punch forces {HEAD ~ the sintered compact} to flow rearwardly in {TAIL ~ the type} of backward extrusion process described in our aforementioned prior patent 
to flow rearwardly in
During the downward motion of the punch 18 , as illustrated in FIG 4 , the pressure exerted by the punch forces { HEAD ~ the sintered compact } to flow rearwardly in { TAIL ~ the type } of backward extrusion process described in our aforementioned prior patent
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH