Electric heating – Metal heating – By arc
Patent
1975-10-06
1977-11-22
Truhe, J. V.
Electric heating
Metal heating
By arc
B23K 900
Patent
active
040597431
ABSTRACT:
A torch with a turbulized supply of a plasma forming gas comprises an electrode having a high-melting insert and a flat end face, and a nozzle with an internal surface having two mated portions: one cylindrical and one tapering; and the diameter of the electrode flat end face amounts essentially to 0.4-0.5 diameter of the electrode proper and the radius of conjugation of the nozzle cylindrical and tapering portions is equal essentially to the length of its cylindrical portion. Due to such a design, the inventive torch features a long service life of both the electrode and the nozzle.
REFERENCES:
patent: 3242305 (1966-03-01), Kane et al.
patent: 3375392 (1968-03-01), Brzozowski et al.
patent: 3408518 (1968-10-01), Strupczewski
patent: 3591759 (1971-07-01), Stand
patent: 3641308 (1972-02-01), Couch, Jr. et al.
patent: 3790742 (1974-02-01), Auer
patent: 3928745 (1975-12-01), Demars et al.
patent: 3930139 (1975-12-01), Bykhovsky et al.
patent: 3944778 (1976-03-01), Bykhovsky et al.
Danchenko Mikhail Evgenievich
Dudko Daniil Andreevich
Esibian Eduard Migranovich
Kozhema Valery Andreevich
Malkin Vasily Berkovich
Bell Fred E.
Truhe J. V.
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