Method for applying a weld bead to a thin section of a substrate

Details Method for applying a weld bead to a thin section of a substrate Method for applying a weld bead to a thin section of a substrate

1986-02-25

1988-04-19

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PL, 219 7616, 219 77, B23K 900

Patent

active

047391464

ABSTRACT:
The welding method is used to lay down weld beads on metallic substrates with a thin section, e.g., of down to 0.030 inch. The process employs a plasma transferred arc which is generated at low current, e.g., between 0.5 amps and 60 amps, and with a very high switching frequency, e.g., 15 KHz at the power supply. A low amount of heat is generated so that the thin section is not burned through. The surfacing powder is delivered into the arc and becomes metallurgically bonded to the substrate.

REFERENCES:
patent: 3016447 (1962-01-01), Gage et al.
patent: 3071678 (1963-01-01), Neely et al.
patent: 3405247 (1968-10-01), Hlivka
patent: 4162389 (1979-07-01), Shimdada et al.
patent: 4536640 (1985-08-01), Vukanovic

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