FIELD: plastic working of metals, namely manufacture of parts such as container body from cup-shaped blank.
SUBSTANCE: method comprises steps of pressing blank through annular forming device by means of unit having plunger, punch and collector. Punch is mounted in distal end of plunger. Inner surface of punch is arranged around outer surface of plunger. Collector is joined with proximal end of plunger. Large number of inlet pipes is used for supplying cooling fluid to inner surface of punch and around outer surface of distal end of plunger. Large number of outlet pipes is used for discharging cooling fluid from inner surface of punch. Said inlet and outlet pipes are arranged mutually in parallel.
EFFECT: highly uniform cooling of punch.
11 cl, 8 dwg
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