Plasma arc cutting torch
OwnerEduard Migranovich Esibian, Daniil Andreevich Dudko +3inventors
InventorsEduard Migranovich Esibian, Daniil Andreevich Dudko, Mikhail Evgenievich Danchenko, Vasily Berkovich Malkin, Valery Andreevich Kozhema
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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.
Claims9
A plasma torch comprising an electrode which has a diameter selected to suit an arc current and which has a side surface and a flat end face whose diameter is selected to be in the range of approximately 0.4 - 0.5 of the electrode diameter, said side surface and said flat end of said electrode mating with each other through a portion which is a part of the external surface of a torus;
- and a nozzle which has a flat end face and an internal surface having cylindrical and tapering portions, said cylindrical portion having a length selected to correspond to the arc current and adjoining said nozzle flat end face, said tapering portion facing said flat end face of said electrode, said tapering and cylindrical portions being mated with each other along a radius that is substantially equal to the length of said cylindrical portion of the internal surface of said nozzle so as to make a part of the internal surface of a torus, and said flat electrode end face being spaced from said nozzle end face at a distance approximately equal to 1.5 diameters of said electrode flat end face.
Dependencies are inferred from the claim text.