Orbital welding internal pressure control

Details Orbital welding internal pressure control Orbital welding internal pressure control

2006-06-06

2006-06-06

Shaw, Clifford C. (Department: 1725)

Electric heating

Metal heating

By arc

C219S06000A, C219S074000

Reexamination Certificate

active

07057137

ABSTRACT:
The present invention is generally comprised of a tube adaptor, a chamber, a chamber pressure sensor, a calibration pressure sensor, an iris valve, an iris valve drive means, and a control and data processing means. In a calibration mode, the calibration pressure sensor measures the purge pressure at the abutment of two flow elements, while concurrently measuring the corresponding pressure at the chamber pressure sensor. In the welding mode, the calibration pressure sensor is removed, and the corresponding pressure within the chamber is maintained throughout the welding process to affect the geometry of the molten weld bead.

REFERENCES:
patent: 5196664 (1993-03-01), McGushion
patent: 5304776 (1994-04-01), Buerkel
patent: 5824983 (1998-10-01), Huddleston

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