Plasma burner for transferred electric arc

Details Plasma burner for transferred electric arc Plasma burner for transferred electric arc

1991-07-02

1993-04-27

Reynolds, Bruce A.

Electric heating

Metal heating

By arc

21912149, B23K 900

Patent

active

052064816

ABSTRACT:
A plasma burner has an annular passage extending along an insulated tube defining the outer wall of the electrode lance and located between the electrode lance and the multi wall burner shell to deliver the auxiliary gas outwardly of the plasma gas. The nozzle forming end of the electrode lance has a coolant circulation as has the burner shell and the annular passage extends substantially to the coolant inlets and outlets of the burner. The construction avoids the formation of parasitic arcs.

REFERENCES:
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patent: 4082914 (1978-04-01), Bertnichuk et al.
patent: 4125754 (1978-11-01), Wasserman et al.
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patent: 4564740 (1986-01-01), Paton et al.
patent: 4628177 (1986-12-01), Dempsey et al.
patent: 4645899 (1987-02-01), Bebber et al.
patent: 4958057 (1990-09-01), Shiraishi et al.
patent: 5124525 (1992-06-01), Severance, Jr. et al.
patent: 5132512 (1992-07-01), Sanders et al.

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