Internal mandrel used in an operation of butt joining two length

Details Internal mandrel used in an operation of butt joining two length Internal mandrel used in an operation of butt joining two length

1982-05-11

1985-01-15

Albritton, C. L.

Electric heating

Metal heating

By arc

219160, B23K 1500

Patent

active

044939663

ABSTRACT:
An internal mandrel (22) cooperating in the operation of joining two successive lengths of tubing by welding, and it is characterized in that this mandrel comprises zones (25, 26, 27) separated longitudinally and serving respectively for matching, welding, and welding checking, and means of displacement of the mandrel (22) by a step, enabling the latter to present the said zones in succession in front of one and the same working station.

REFERENCES:
patent: 3261529 (1966-07-01), Pagan
patent: 3461264 (1969-08-01), Nelson et al.

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