초록 ▼

A torch for cutting metals and nonmetals underwater includes an electrode having a tube and a plurality of rods within the tube. Some of the rods are ferrous metal and a smaller number of them are a nonferrous metal selected from the group consisting of Al, Mg, Ti, or alloys thereof. Oxygen and elec

A torch for cutting metals and nonmetals underwater includes an electrode having a tube and a plurality of rods within the tube. Some of the rods are ferrous metal and a smaller number of them are a nonferrous metal selected from the group consisting of Al, Mg, Ti, or alloys thereof. Oxygen and electrical power are supplied through the electrode at least to start the cutting with an ionized gaseous cone. The cone persists when power is removed and is terminated by stopping oxygen flow. An independently portable apparatus using the torch is disclosed.

대표청구항 ▼

A cutting torch primarily for underwater use in which electrical current and reactive gas flow are used in combination to cause progressive burning of a substantially rigid metallic electrode, the torch comprising a substantially rigid metallic electrode comprising a substantially rigid metallic tub

A cutting torch primarily for underwater use in which electrical current and reactive gas flow are used in combination to cause progressive burning of a substantially rigid metallic electrode, the torch comprising a substantially rigid metallic electrode comprising a substantially rigid metallic tube; a plurality of ferrous metal rods extending longitudinally within said tube from one end thereof to the other; at least one rod made of a metal selected from the group consisting of aluminum, magnesium, titanium and alloys thereof disposed within said tube; and a layer of insulating material substantially covering the exterior surface of said tube; means for connecting a source of electrical current to said tube and for applying electrical current thereto; and means for connecting a supply of reactive gas to said tube, said ferrous rods and said at least one rod being circularly arranged in said tube against the inner surface thereof with the centers of said rods lying substantially on circle having as its center the central axis of said tube, the arrangement of said rods defining a central channel along the axis of said tube.