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Vladimir P Slednev

Vyacheslav F Gubaidulin

Grigory M Shulgin

Julian M Chumanov

Pavel A Levichev

Jury P Lyashenko

Dmitry P Evteev

Sergei P Efimenko

Viktor I Pogorzhelsky

Stanislav N Ignatiev

Anatoly L Liberman

Vasily V Polyakov

Valentin B Shum

Veniamin Veniaminovich Fulmakht

Vladimir S Solod

Valery V Moiseenkov

Valentin M Klimenko

Vladimir P Timofeev

Vladimir I Listopad

Anatoly A Tolpa

Vasily P Morozov

Anatoly G Shalimov

Eduard V Ovsy

A method of making billets, whereby a composite billet is produced by continuous casting or rolling, which billet is star-shaped in cross section and has at least two ray members disposed symmetrically relative to the central longitudinal axis of the composite billet; the base of each star ray member of the composite billet at the place of its juncture with the central portion thereof is selected to be 0.72 to 2.3 of the ray member height, the other base being 0.5 to 1.0 of the ray member height, the lateral sides of the ray member may differ in length; the segregation zone is caused to concentrate in the central portion of the composite billet selecting appropriate relationship between geometric dimensions of the composite billet and by creating favorable conditions for producing the composite billet; thereafter, the ray members are severed from the central portion of the composite billet by means of rolls in a rolling mill, this being performed by subjecting one of the lateral sides of the ray member to the action of an appropriately grooved roll.

Method of making billets

The invention relates to a method of rolling section billets in which billets interconnected by bridges are successively formed from a slab in a number of grooves defined by a plurality of transversely juxtaposed passes, with subsequent separation of billets from one another by effecting a relative displacement of adjacent billets by prevailingly acting with a groove on one of the sides of the adjacent billets at an angle other than 90.degree. to the roll axis when the bridge thickness becomes equal to 0.01-0.3 of the groove height.

Method of rolling section billets

A method of rolling section billets wherein a plurality of billets transversely interconnected by bridges are successively simultaneously formed from a slab in a number of grooves defined by a plurality of transversely juxtaposed grooves. The forming is effected in two stages by reducing the value of longitudinal tensile stresses in central portions of the billets at one stage by changing the position of zones of prevailing reduction transversely of the billets, with the subsequent separation of billets from one another.

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Kharkiv, Ukraine

Vladimir P Slednev