RU94040239A - Method and apparatus for continuous casting of flat ingots - Google Patents

Method and apparatus for continuous casting of flat ingots

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Publication number
RU94040239A
RU94040239A RU94040239/02A RU94040239A RU94040239A RU 94040239 A RU94040239 A RU 94040239A RU 94040239/02 A RU94040239/02 A RU 94040239/02A RU 94040239 A RU94040239 A RU 94040239A RU 94040239 A RU94040239 A RU 94040239A
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RU
Russia
Prior art keywords
ingot
crystallizer
flat
mold
rollers
Prior art date
Application number
RU94040239/02A
Other languages
Russian (ru)
Other versions
RU2075177C1 (en
Inventor
В.И. Уманец
В.И. Лебедев
А.Ф. Копылов
И.В. Сафонов
Original Assignee
Акционерное общество "Новолипецкий металлургический комбинат"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Акционерное общество "Новолипецкий металлургический комбинат" filed Critical Акционерное общество "Новолипецкий металлургический комбинат"
Priority to RU94040239/02A priority Critical patent/RU2075177C1/en
Publication of RU94040239A publication Critical patent/RU94040239A/en
Application granted granted Critical
Publication of RU2075177C1 publication Critical patent/RU2075177C1/en

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Abstract

FIELD: metallurgy. SUBSTANCE: method involves supplying metal into crystallizer; withdrawing ingot at variable speed; forming ingot with convex portions of wide faces and flat portions along their edges in crystallizer; supporting and directing ingot under crystallizer through secondary cooling zone by idle and drive rollers; cooling ingot surface by coolant sprinkled by nozzles. During pouring, ingot wide faces are formed in parallel one with the other lengthwise of crystallizer. Convex portions of wide faces have flat portions with width equal to 0.2-0.3 of convex portion width. Upon exit of ingot from crystallizer, convex portions of wide faces are deformed by rollers, which are brought one to the other, with deformation process being terminated at distance from metal meniscus in crystallizer equal to τ V, where t is complete hardening time of ingot having thickness equal to that of flat portions extending along ingot edges, min; V is ingot withdrawal speed, m/min. Apparatus has crystallizer with convex working cavity in the middle part of wide working walls, flat portions along their edges and thin working walls, idle and drive rollers positioned in secondary cooling zone under crystallizer. Convex portions of wide working walls extend along crystallizer length and are provided with flat portions positioned in their middle part. Roller barrels have concave middle portions with flat parts. Width of concave portion is equal to that of convex portion of crystallizer wide walls. Distance between cylindrical edge portions of barrels of each pair of rollers is made uniform and equal to width h of narrow walls of crystallizer at its lower end. Distance between flat parts of concave portion of barrels in each pair of rollers is variable from maximum value of H under crystallizer to minimum value of h at the end of cooling zone. Rollers have reciprocal drive moving them for value of 0.5 (H-h). EFFECT: increased efficiency and improved quality of ingots.

Claims (1)

Изобретение относится к металлургии, конкретнее к непрерывной разливке плоских слитков. Технический эффект при использовании изобретения заключается в улучшении качества плоских непрерывнолитых слитков и в повышении производительности процесса непрерывной разливки. Это достигается тем, что подают металлы в кристаллизатор, вытягивают из него слиток с переменной скоростью, формируют в кристаллизаторе слиток с выпуклыми участками широких граней и плоскими по их краям, поддерживают и направляют слиток под кристаллизатором в зоне вторичного охлаждения при помощи холостых и приводных роликов, охлаждают поверхность слитка охладителем, распыливаемым форсунками. В процессе разливки широкие грани слитка формируют параллельными одна другой в продольном направлении на всей длине кристаллизатора. Выпуклые участки широких граней имеют плоские участки, ширина которых равна 0,2 - 0,3 ширины всего выпуклого участка. После выхода слитка из кристаллизатора выпуклые участки широких граней слитка деформируют роликами посредством их сближения навстречу друг к другу и заканчивают процесс деформации на расстоянии, от мениска металла в кристаллизаторе, равном
τv,,
где τ - время полного затвердевания слитка с толщиной, равной толщине плоских участков по краям слитка, мин; V - скорость вытягивания слитка, м/мин. Кроме того, установка непрерывной разливки плоских слитков включает кристаллизатор с выпуклой рабочей полостью в средней части широких рабочих стенок и плоскими участками по их краям, между которыми установлены узкие рабочие стенки, а также холостые и приводные ролики в зоне вторичного охлаждения под кристаллизатором. Выпуклые участки широких рабочих стенок расположены на всей длине кристаллизатора и имеют в средней их части плоские участки. Бочки роликов выполнены в средней их части вогнутым с плоскими участками. Ширина вогнутого участка равна ширине выпуклого участка широких стенок кристаллизатора, а расстояние между краевыми цилиндрическими участками бочек каждой пары роликов постоянно и равно ширине узких стенок кристаллизатора n на нижнем его торце. Расстояние между плоскими участками вогнутого участка бочек в каждой паре роликов изменяется от максимального значения Н под кристаллизатором до минимального значения n в конце зоны вторичного охлаждения. Ролики снабжены приводом их возвратно-поступательного перемещения в поперечном к технологической оси установки направлении на величину равную 0,5 (H - h), где H - расстояние между плоскими участками выпуклого участка широких стенок на нижнем торце кристаллизатора. Изобретение предназначено для применения при непрерывной разливки плоских слитков.
The invention relates to metallurgy, and more particularly to the continuous casting of flat ingots. The technical effect when using the invention is to improve the quality of flat continuously cast ingots and to increase the productivity of the continuous casting process. This is achieved by supplying metals to the mold, pulling an ingot from it at a variable speed, forming an ingot in the mold with convex sections of wide faces and flat along their edges, supporting and guiding the ingot under the mold in the secondary cooling zone using idle and drive rollers, cool the surface of the ingot with a cooler sprayed by nozzles. During casting, the wide faces of the ingot are formed parallel to one another in the longitudinal direction along the entire length of the mold. Convex sections of wide faces have flat sections whose width is 0.2 - 0.3 of the width of the entire convex section. After the ingot leaves the crystallizer, the convex sections of the wide faces of the ingot are deformed by the rollers by drawing them closer to each other and the deformation process is completed at a distance from the meniscus of the metal in the mold equal to
τv ,,
where τ is the time of complete solidification of the ingot with a thickness equal to the thickness of the flat sections along the edges of the ingot, min; V is the ingot drawing speed, m / min. In addition, the installation of continuous casting of flat ingots includes a mold with a convex working cavity in the middle of the wide working walls and flat sections along their edges, between which narrow working walls are installed, as well as idle and drive rollers in the secondary cooling zone under the mold. Convex sections of wide working walls are located along the entire length of the mold and have flat sections in their middle part. Barrels of rollers are made concave with flat sections in their middle part. The width of the concave section is equal to the width of the convex section of the wide walls of the mold, and the distance between the edge cylindrical sections of the barrels of each pair of rollers is constant and equal to the width of the narrow walls of the mold n at its lower end. The distance between the flat sections of the concave section of the barrels in each pair of rollers varies from the maximum value H under the mold to the minimum value n at the end of the secondary cooling zone. The rollers are equipped with a drive for their reciprocating movement in the direction transverse to the technological axis of the installation by an amount equal to 0.5 (H - h), where H is the distance between the flat sections of the convex section of the wide walls at the bottom end of the mold. The invention is intended for use in the continuous casting of flat ingots.
RU94040239/02A 1994-10-28 1994-10-28 METHOD FOR CONTINUOUS PILLING OF FLAT INGOTS AND INSTALLATION FOR ITS IMPLEMENTATION RU2075177C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94040239/02A RU2075177C1 (en) 1994-10-28 1994-10-28 METHOD FOR CONTINUOUS PILLING OF FLAT INGOTS AND INSTALLATION FOR ITS IMPLEMENTATION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94040239/02A RU2075177C1 (en) 1994-10-28 1994-10-28 METHOD FOR CONTINUOUS PILLING OF FLAT INGOTS AND INSTALLATION FOR ITS IMPLEMENTATION

Publications (2)

Publication Number Publication Date
RU94040239A true RU94040239A (en) 1997-02-27
RU2075177C1 RU2075177C1 (en) 1997-03-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU94040239/02A RU2075177C1 (en) 1994-10-28 1994-10-28 METHOD FOR CONTINUOUS PILLING OF FLAT INGOTS AND INSTALLATION FOR ITS IMPLEMENTATION

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RU (1) RU2075177C1 (en)

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Publication number Publication date
RU2075177C1 (en) 1997-03-10

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