Weld overlay system

Electric heating – Metal heating – Of cylinders

Reexamination Certificate

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Details

C219S076140, C219S130510

Reexamination Certificate

active

06858813

ABSTRACT:
A process for applying a weld overlay to a tube with a single pass of a weld head. An inverter-type alternating current pulsed power source, composed of a primary inverter and a secondary inverter, is used to control the melting rate of welding wire during welding of the overlay to the tube. The primary inverter controls the value of output current, and the second inverter changes the polarity of output current between electrode negative. For a given welding current, the wire melting rate increases significantly as the electrode negative ratio increases, and this makes a relatively high welding speed attainable. Increasing the electrode negative ratio at a fixed, predetermined wire feed rate decreases the weld penetration depth, which correspondingly lowers the dilution rate and results in a smooth and narrow welding bead.

REFERENCES:
patent: 2299747 (1942-10-01), Harter
patent: 2427350 (1947-09-01), Carpenter et al.
patent: 2756311 (1956-07-01), Persson et al.
patent: 2868954 (1959-01-01), Skinner et al.
patent: 3139511 (1964-06-01), Kudelko
patent: 3549857 (1970-12-01), Needham et al.
patent: 3573420 (1971-04-01), Johnson
patent: 3626138 (1971-12-01), Hurley
patent: 3770932 (1973-11-01), Cotter et al.
patent: 3999031 (1976-12-01), Yonezawa et al.
patent: 4000373 (1976-12-01), Lula et al.
patent: 4224360 (1980-09-01), Ohnishi et al.
patent: 4431447 (1984-02-01), Schick
patent: 4609577 (1986-09-01), Long
patent: 4624406 (1986-11-01), Yasuda et al.
patent: 4948936 (1990-08-01), Landry
patent: 5306358 (1994-04-01), Lai et al.
patent: 5569396 (1996-10-01), Topolski
patent: 6013890 (2000-01-01), Hulsizer
patent: 6204477 (2001-03-01), Lai
patent: 6207927 (2001-03-01), Mita et al.
patent: 6627839 (2003-09-01), Luckowski et al.
patent: 51-12349 (1976-04-01), None
patent: 55-73479 (1980-06-01), None
patent: 55-84276 (1980-06-01), None
patent: 59-110474 (1984-06-01), None
patent: 60133975 (1985-07-01), None

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