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Institut Elektrosvarki Imeni E.o. Patona Adakemii Nauk

Georgy Mikhailovich Grigorenko

Viktor Iosifovich Lakomsky

Gennady Fedorovich Torkhov

Albert Nikitovich Korotkov

Ivan Vasilievich Sheiko

Alexei Ivanovich Pakhomov

Boris E Paton

Jury V Latash

Gary A Melnik

Konstantin S Eltsov

Grigory B Asoiants

Vladimir Kirillovich Trigub

Emil Vasilievich Verkhovtsev

Jury Vladimirovich Lisovoi

Vitaly S Nesmikh

Viktor V Stepanenko

Sergei Arsentievich Kanibolotsky

Vladimir Denisovich Shevchenko

Nikolai Mikhailovich Kiselev

Evgeny Isaevich Moshkevich

Viktor Mikhailovich Kurganov

A nonconsumable electrode comprises a hollow cylindrical body, a hollow detachable tip made in the form of a body of revolution coaxial with the hollow cylindrical body, a solenoid for generating a magnetic field, and a partition. The tip is secured to one of the ends of the body and has lateral cylindrical non-arcing portion and a convex arcing end portion. The lower end of the solenoid is disposed in the tip cavity defined by the cylindrical non-arcing portion of the tip. The partition is coaxially mounted in the cavity of the body and of the tip so that between said partition and the walls of the body and of the tip there is formed a passageway for the flow of a coolant.

Nonconsumable electrode for melting metals and alloys

In a plasma-arc torch for melting metals the electrode assembly comprises an electrode holder made of copper alloys and having a butt portion which rigidly secures a tungsten electrode by means of diffusion welding. The invention provides for a welded joint between the electrode and the electrode holder, a nonconsumable current-conducting interlayer made of titanium, copper and tungsten being placed therebetween.

Electrode assembly for plasma arc torches

According to the invention, there is proposed a feed system for a plasma-arc furnace wherein an electrode with an axial opening is used as the low-temperature plasma generating means. The feed system comprises a gas conduit, in the form of an individual water-cooled member, a current-conducting element mounted within a shell and secured to a flange which includes a duct for the delivery of gas, a duct for feeding flux, and a duct for supplying water. The flange has secured to it the shell. A flux delivery means and a bus for power supply are also included. The herein proposed feed system makes it possible to assure stable operating conditions of a plasma-arc furnace, enhance its efficiency, reduce power losses and decrease expenses involved in the remelting of metals and alloys.

Feed system for plasma-arc furnace

A plasmarc furnace for remelting metals and alloys in a controlled atmosphere, which comprises a hollow consumable electrode disposed in a crystallizer and an arc plasmatron with a nonconsumable electrode disposed above the hollow consumable electrode coaxially therewith. A hollow rod is provided above and coaxial with the arc plasmation driven by a vertical travel mechanism and insulated from the arc plasmatron leads. The plasma-forming gas is delivered to the plasma discharge zone by a plasma-forming gas supply and flow rate control system via a gas conduit defined by the cavities of the hollow rod, the arc plasmatron and the hollow consumable electrode. The crystallizer and hollow rod are coupled to the opposite poles of the power source.

Plasmarc furnace for remelting metals and alloys

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Kyiv, Ukraine

Georgy Mikhailovich Grigorenko