RU2008118258A - METHOD FOR PRODUCING HIGH-QUALITY CASTINGS OF METALS AND ALLOYS WITH ULTRA-DISPERSION STRUCTURE - Google Patents
METHOD FOR PRODUCING HIGH-QUALITY CASTINGS OF METALS AND ALLOYS WITH ULTRA-DISPERSION STRUCTURE Download PDFInfo
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- RU2008118258A RU2008118258A RU2008118258/02A RU2008118258A RU2008118258A RU 2008118258 A RU2008118258 A RU 2008118258A RU 2008118258/02 A RU2008118258/02 A RU 2008118258/02A RU 2008118258 A RU2008118258 A RU 2008118258A RU 2008118258 A RU2008118258 A RU 2008118258A
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- centrifuge
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Abstract
Способ получения высококачественных отливок металлов и сплавов с ультрадисперсной структурой, заключающийся в том, что во вращающуюся с постоянной скоростью посредством центрифуги изложницу кристаллизатора заливается слабоперегретый расплав, распределяющийся по всему объему изложницы от центра до наружной стенки изложницы, отличающийся тем, что перед заливкой в изложницу кристаллизатора расплав перегревают на 200-700°С над линией ликвидус, после заполнения слабоперегретым расплавом изложницы обеспечивают ее вращением с постоянной скоростью посредством центрифуги в периферийной части изложницы, значение коэффициента гравитации от 50 до 300 при объемном равномерном охлаждении расплава со скоростью охлаждения не более 1° С/с и величиной перегрева расплава вместе с футеровкой изложницы или подогревом изложницы кристаллизатора, при которой процессы кристаллизации в силовом поле завершены до достижения расплавом температуры начала естественных процессов кристаллизации, а после охлаждения отливки в изложнице кристаллизатора до температуры завершения процессов естественной кристаллизации останавливают вращение центрифуги и охлаждают отливку.A method of obtaining high-quality castings of metals and alloys with an ultrafine structure, which consists in the fact that a slightly overheated melt is poured into the mold of a mold rotating at a constant speed through a centrifuge, distributed throughout the mold from the center to the outer wall of the mold, characterized in that before casting into the mold the melt is overheated at 200-700 ° C above the liquidus line, after filling the molds with a slightly overheated melt, the molds are provided with its rotation with a constant by means of a centrifuge in the peripheral part of the mold, the value of the gravity coefficient is from 50 to 300 with uniform volumetric cooling of the melt with a cooling rate of not more than 1 ° C / s and the melt overheating rate together with the mold lining or heating of the mold of the mold, in which crystallization processes in the force field completed until the melt reaches the temperature of the onset of natural crystallization processes, and after cooling the casting in the mold of the mold to the temperature of completion of the processes venous crystallization stop the rotation of the centrifuge and cool the casting.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2008118258/02A RU2008118258A (en) | 2008-05-12 | 2008-05-12 | METHOD FOR PRODUCING HIGH-QUALITY CASTINGS OF METALS AND ALLOYS WITH ULTRA-DISPERSION STRUCTURE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2008118258/02A RU2008118258A (en) | 2008-05-12 | 2008-05-12 | METHOD FOR PRODUCING HIGH-QUALITY CASTINGS OF METALS AND ALLOYS WITH ULTRA-DISPERSION STRUCTURE |
Publications (1)
Publication Number | Publication Date |
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RU2008118258A true RU2008118258A (en) | 2009-11-20 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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RU2008118258/02A RU2008118258A (en) | 2008-05-12 | 2008-05-12 | METHOD FOR PRODUCING HIGH-QUALITY CASTINGS OF METALS AND ALLOYS WITH ULTRA-DISPERSION STRUCTURE |
Country Status (1)
Country | Link |
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RU (1) | RU2008118258A (en) |
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2008
- 2008-05-12 RU RU2008118258/02A patent/RU2008118258A/en unknown
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