Plasma transfer welded arc torch

Details Plasma transfer welded arc torch Plasma transfer welded arc torch

1985-03-21

1987-06-09

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PP, 219121PL, 219 7616, 219 75, B23K 1500

Patent

active

046721711

ABSTRACT:
A plasma arc torch is disclosed having an upper body of a non-conductive material supporting an electrode and a lower body of a conductive material supporting a nozzle through which an arc is formed between the electrode and a work piece. Means is provided for blowing a mixture of inert gas and a fusible powder through a passageway formed in said lower body and through passages formed in said nozzle onto the work piece. A liquid coolant is circulated through a reservoir formed in the lower body, and an inert gas is discharged through an opening that circumvallates the nozzle. Both the nozzle and the torch as a whole are uniquely constructed to avoid many of the problems caused by the use of insulators and fluid seals. In addition, the novelty of construction enhances performance.

REFERENCES:
patent: 3830428 (1974-08-01), Dyos
patent: 4127760 (1978-11-01), Meyer et al.
patent: 4389559 (1983-06-01), Rotolico et al.
patent: 4521666 (1985-06-01), Severance, Jr. et al.

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