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Viktor A Efimov

Richard Y Yakobshe

Boris I Medovar

Viktor Leonidovich Artamonov

Alexei G Bogachenko

Jury P Shtanko

Mikhail Y Brovman

Ivan K Marchenko

Nikolai Mikhailovich Kozy

Georgy Sergeevich Marinsky

Georgy G Lutsenko

Sergei Y Shipitsyn

Viktor L Shevtsov

Vitaly I Sagan

Georgy D Semenyaka

Jury Z Babaskin

Leonid A Sokirko

Leonora A Rostovskaya

A semicontinuous casting apparatus comprises a mould positioned above a secondary-cooling chamber which accommodates a dummy bar having a thickened portion and a body made in the form of a hydraulic cylinder intended to pull out a casting and mounted to move lengthwise of said chamber. For the dummy bar to be able to move, the apparatus is provided with alternately actuated index pins. The pins are fixed on stationary mounted legs and extend through openings in the walls of the secondary cooling chamber and cooperate with openings provided in the lateral sides of the thickened portion and body of the dummy bar.

Semicontinuous casting apparatus

A dopant material, comprising metallic elements constituting alloy base metals and endogeneous high-melting-point compounds selected from the group consisting of titanium, zirconium, tantalum, hafnium and thorium nitrides, carbides, carbonitrides, borides and oxides. The dopant material for iron- or nickel-base alloys is produced by melting a dopant base metal, whereupon the elements required for the formation of the high-melting-point compounds selected from the group consisting of titanium, zirconium, tantalum, hafnium, thorium nitrides, carbides, carbonitrides, borides and oxides, are taken in a stoichiometric ratio and introduced into the melt. These elements are introduced into the melt at a temperature exceeding that required for the formation therein of such compounds. After that the melt with the elements introduced therein is cooled at a rate of 10.sup.2 -10.sup.7 degrees per second until high-melting-point endogeneous dispersed compounds are formed in the solidified base metal. The present invention allows the production of the dopant materials which when used for modifying makes it possible to ensure an enhancement of a total range of properties, such as high-temperature strength, thermostability, crack resistance in casings and weldings, impact toughness, corrosion and erosion resistances in various aggressive media.

Method of producing dopant material for iron or nickel-base alloys

A mould for the electroslag casting of faceted metal ingots has longitudinal flutes on the internal surfaces of at least two walls thereof. The depth of these flutes decreases in a horizontal direction from the middle of the walls to the corners of the mould chamber.

Mould for electroslag casting of faceted metal ingots

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Kyiv, Ukraine

Viktor A Efimov