Other

Mikhail Iosipovich Arshansky

Evgeny Alexeevich Korshunov

Igor Nikolaevich Petrov

Evgeny Zakharovich Freidenzon

Alexandr Ivanovich Kalinin

Mikhail Ivanovich Fedorov

Vladimir Arkadievich Tyagunov

Konstantin Alexeevich Malikov

Evgeny Valentinovich Melnikov

Valery P Kostrov

Nikolai I Baimov

Georgy F Konovalov

Petr E Efremov

Petr G Shmidt

A method of continuous casting of an ingot by way of its recurrent upward drawing from a radial cooled mould into which molten metal is forced from a bottom of a supply vessel. Pressure is increased inside the ingot being formed in the period of a pause between its drawing from the mould for a tighter fitting of the ingot skin to the walls of the mould, and, once the ingot skin of a prescribed thickness is solidified, the pressure is reduced in the molten metal enclosed by the skin. Thereafter a hole is made in the upper butt portion of the ingot skin and a neutral gas is fed through the hole until the levels of the molten metal in the mould and in the supply vessel are equalized; then the ingot is drawn from the mould. The newly formed upcast branch of the ingot envelope is reduced with the aid of rolls in the course of drawing to a continuous section of a prescribed shape, the volume of a neutral gas (gas cushion) enclosed by the envelope being ahead of the reducing rolls. The method is good for the production of flat, profiled and multilayer ingots.

Method of continuous casting of ingots

A mill using a movable stand with shaped rolls featuring a working portion, with the reversible rotation of the rolls being limited by an angle encompassing the working roll portion. The rolling of an ingot being cast is effected by carrying the stand with the rotating rolls 'forward' and 'backward'.

Mill for rolling continuous cast ingots

A method envisaging the use of a movable stand with shaped rolls featuring a working portion with the reversible rotation of said rolls being limited by an angle encompassing said working roll portion, and the rolling of an ingot being cast is effected by carrying the stand with the rotating rolls 'forward' -- 'backward'. With a stable rolling process the rolling cycle comprises the following steps: setting the rolls with their working portions to one of their extreme positions, carrying the stand with the standing rolls 'backward' in the direction opposite to that of the ingot being cast into a position corresponding to the next reduction of the ingot, reducing the ingot between the rolls with the stand carried 'backward,' setting the rolls with their working portions to another extreme position, displacing the stand with the stopped rolls 'backward' at a distance which is the function of the assigned shrinkage during the next 'forward' stroke of the stand, reducing of the ingot between the rolls with the stand moving 'forward,' carrying the stand with the stopped rolls 'backward' at a distance which is the function of the assigned shrinkage during the next 'backward' stroke of the stand. Next the 'backward' -- 'forward' strokes are repeated until an ingot portion extracted from the mould over the withdrawal period is rolled out, whereafter the movable stand with the stoppeding rolls is carried 'forward' at a distance equal to the ingot length extracted from the mould over the withdrawal period. Further, after the next extraction of the ingot being cast from the mould the rolling cycles are repeated for the next portions of the ingot being extracted from the mould. To provide the reciprocation of the stand and reversible rotary motion of the rolls the rolling mill is equipped with a gear made as hydraulic rams mounted on the movable stand and to ensure the displacement of the stand when the work rolls do not interact with the ingot being rolled the mill is furnished with the second transfer gear.

Method of rolling a continuously cast ingots

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Mikhail Iosipovich Arshansky