RU2022710C1 - Method to machine workpieces from hard alloys and carbides of transition metals - Google Patents
Method to machine workpieces from hard alloys and carbides of transition metals Download PDFInfo
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- RU2022710C1 RU2022710C1 SU4944267A RU2022710C1 RU 2022710 C1 RU2022710 C1 RU 2022710C1 SU 4944267 A SU4944267 A SU 4944267A RU 2022710 C1 RU2022710 C1 RU 2022710C1
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Abstract
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Изобретение относится к порошковой металлургии, в частности к способам обработки заготовок из твердых сплавов на основе карбидов переходных металлов, а также "чистых" карбидов переходных металлов. The invention relates to powder metallurgy, in particular to methods for processing billets of hard alloys based on transition metal carbides, as well as “pure” transition metal carbides.
Известен способ обработки твердых сплавов, включающий нагрев заготовки до температуры высокой пластичности (сверхпластичности) металла связки и последующее деформирование. A known method of processing hard alloys, including heating the workpiece to a temperature of high ductility (superplasticity) of the metal of the binder and subsequent deformation.
К недостаткам способа относится невозможность его реализации при деформировании заготовок из "чистых" карбидов, а также при содержании связки менее 10% по объему. Кроме того, деформации подвергается только металлическая фаза, а размеры и форма зерен карбидной фазы не изменяются. The disadvantages of the method include the impossibility of its implementation when deforming blanks of "pure" carbides, as well as when the binder content is less than 10% by volume. In addition, only the metal phase undergoes deformation, and the size and shape of the grains of the carbide phase do not change.
Целью изобретения является уменьшение размеров зерен карбидной фазы и увеличение за счет этого высокотемпературной пластичности. The aim of the invention is to reduce the grain size of the carbide phase and increase due to this high-temperature ductility.
Поставленная цель достигается тем, что в способе обработки заготовок из твердых сплавов и карбидов переходных металлов, включающем нагрев и деформирование заготовок, в отличие от известного деформирование заготовки осуществляют в несколько этапов со степенью деформации на каждом этапе не менее 20% , при снижении температуры заготовки после каждого этапа на 10-100оС, при суммарном снижении температуры в процессе деформирования не ниже 0,42 от температуры плавления карбидной фазы в материале, причем, начиная с температуры 0,56 от температуры плавления карбидной фазы, скорость деформирования составляет 0,1-50 мм/мин.This goal is achieved by the fact that in the method of processing workpieces of hard alloys and carbides of transition metals, including heating and deformation of the workpieces, in contrast to the known deformation of the workpiece is carried out in several stages with a degree of deformation of at least 20% at each stage, while reducing the temperature of the workpiece after each stage at 10-100 ° C, at a total decrease of temperature in the process of deformation of not less than 0.42 of the melting temperature of the carbide phase in the material, wherein, since the temperature of the temperature mp 0.56 pressure of the carbide phase, the deformation rate is 0.1-50 mm / min.
Рекомендуется после каждого этапа деформации производить кантовку заготовки. It is recommended that after each stage of deformation, the workpiece is edged.
Обрабатывали заготовку из карбида титана нестехиометрического состава с химическим составом TiC0,5. Размер зерен в материале заготовки составлял 12 мкм. Заготовка имела форму куба с размерами сторон 50 мм. Температура плавления карбида данного состава составляла 1645оС (согласно диаграмме состояния).A blank of titanium carbide of non-stoichiometric composition with a chemical composition of TiC 0.5 was processed. The grain size in the workpiece material was 12 μm. The blank was in the form of a cube with side dimensions of 50 mm. The melting point of carbide of this composition was 1645 about C (according to the state diagram).
Заготовку нагревали и деформировали на гидравлическом прессе при различных температурно-скоростных условиях. Результаты экспериментов сведены в таблицу. The preform was heated and deformed in a hydraulic press under various temperature and speed conditions. The experimental results are summarized in table.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU4944267 RU2022710C1 (en) | 1993-06-11 | 1993-06-11 | Method to machine workpieces from hard alloys and carbides of transition metals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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SU4944267 RU2022710C1 (en) | 1993-06-11 | 1993-06-11 | Method to machine workpieces from hard alloys and carbides of transition metals |
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RU2022710C1 true RU2022710C1 (en) | 1994-11-15 |
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SU4944267 RU2022710C1 (en) | 1993-06-11 | 1993-06-11 | Method to machine workpieces from hard alloys and carbides of transition metals |
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RU (1) | RU2022710C1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997048509A1 (en) * | 1996-06-21 | 1997-12-24 | General Electric Company | Method for producing axially symmetric parts and the article |
WO1997048831A3 (en) * | 1996-06-21 | 1998-02-19 | Gen Electric | Method for processing billets from multiphase alloys and the article |
US6682610B1 (en) | 1999-02-15 | 2004-01-27 | Nhk Spring Co., Ltd. | Manufacturing method for hollow stabilizer |
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1993
- 1993-06-11 RU SU4944267 patent/RU2022710C1/en active
Non-Patent Citations (1)
Title |
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Авторское свидетельство СССР N 1656781, кл. B 22F 3/24, 1989. * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997048509A1 (en) * | 1996-06-21 | 1997-12-24 | General Electric Company | Method for producing axially symmetric parts and the article |
WO1997048831A3 (en) * | 1996-06-21 | 1998-02-19 | Gen Electric | Method for processing billets from multiphase alloys and the article |
US6939419B1 (en) | 1996-06-21 | 2005-09-06 | General Electric Company | Method for producing axially symmetric parts and the article |
US6682610B1 (en) | 1999-02-15 | 2004-01-27 | Nhk Spring Co., Ltd. | Manufacturing method for hollow stabilizer |
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