Method for working the ends of steel pipe by upsetting and press

Details Method for working the ends of steel pipe by upsetting and press Method for working the ends of steel pipe by upsetting and press

1987-12-11

1989-07-11

Larson, Lowell A.

Metal deforming

Process

Tube making or reshaping

72306, 72316, B21D 4104

Patent

active

048459720

ABSTRACT:
A method for working at least one end of a steel pipe by upsetting and pressing which comprises an external upset portion having an outer taper being shaped by upset forging, the portion then being pressed by an internal upset die so as to displace the outer taper to an internal upset portion having an inner taper and then internal upset forging being applied by the internal upset die, thereby forming accurately the length of the inner taper and the curvature of a starting point of the portion having the inner taper.

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