A cold forging forming method for forming a three dimensional hollow article without rough edges, wherein, an alloy of low melting point is used instead of mercury as {HEAD ~ a filler} with {TAIL ~ plasticity} 
A cold forging forming method for forming a three dimensional hollow article without rough edges , wherein , an alloy of low melting point is used instead of mercury as { HEAD ~ a filler } with { TAIL ~ plasticity }
OTH OTH OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL