Open-arc plasma wire spray method and apparatus

Details Open-arc plasma wire spray method and apparatus Open-arc plasma wire spray method and apparatus

1989-10-02

1992-04-28

Paschall, M. H.

Electric heating

Metal heating

By arc

21912148, 219 7616, 219 7615, 21912151, 427 34, B23K 900

Patent

active

051091500

ABSTRACT:
The plasma-arc torch is of the type wherein a thermally ionizable gas is ected past a non-consumable cathode electrode and through the constricted orifice of a nozzle. An arc is established between the non-consumable electrode and the nozzle to initiate and sustain a plasma stream through the constricted orifice and then through a final port in a housing. A shield gas is directed around the nozzle and through the final port in the housing. A wire guide/contact tip is used for supporting a positively charged spray wire with a wire alignment fixture for coupling the wire guide/contact tip to the plasma stream outside the final port in the housing, the wire alignment fixture having a first collar section fixed to the torch and a second collar section fixed to the wire guide/contact tip.

REFERENCES:
patent: 2982845 (1961-05-01), Yenni et al.
patent: 3830997 (1974-08-01), Essers et al.
patent: 4370538 (1983-01-01), Browning
patent: 4604306 (1986-08-01), Browning
patent: 4668852 (1987-05-01), Fox et al.
patent: 4672171 (1987-06-01), Cusimano et al.
patent: 4762977 (1988-08-01), Browning
patent: 4788402 (1988-11-01), Browning

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