CN101722282B - Integrated water tank type crystallizer used for casting 7 series extra super duralumin alloy - Google Patents
Integrated water tank type crystallizer used for casting 7 series extra super duralumin alloy Download PDFInfo
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- CN101722282B CN101722282B CN2009103124132A CN200910312413A CN101722282B CN 101722282 B CN101722282 B CN 101722282B CN 2009103124132 A CN2009103124132 A CN 2009103124132A CN 200910312413 A CN200910312413 A CN 200910312413A CN 101722282 B CN101722282 B CN 101722282B
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Abstract
The invention provides an integrated water tank type crystallizer used for casting 7 series extra super duralumin alloy, relating to a crystallizer. The invention solves the problem that cast ingot produces cracks caused by stress concentration as the existing crystallizer is not even in water-cooling distribution. The cross section contour of the flat through hole is composed of two arc sections and two straight line sections, each arc section is formed by butt joint of two arcs in different diameters; the lower end face of all the side walls of crystallizer tank body is opened with an annular groove, the lower end face of the annular water feeding hole wall body between the annular groove and the flat through hole is opened with a plurality of osculums in uniform distribution, the lower end of each osculum is inclined toward the central axis of the flat through hole; and four clapboards are respectively arranged at the two ends of the annular groove and divide the annular groove into four regions. The crystallizer of the invention adopts four-section design and different diameters of osculums to control water flow, so that cooling of cast ingot is even, temperature is ensured to be consistent with stress field distribution, and cast ingot crack tendency is greatly reduced.
Description
Technical field
The present invention relates to a kind of integrated water tank type crystallizer, be specifically related to a kind of extra super duralumin alloy integrated water tank type crystallizer that is used to cast.
Background technology
Zn, Cu content have been improved in the component content of 77 series extra super duralumin alloys, Zn, Mg ratio have been increased, therefore this alloy has high-strength characteristics, and with Zr replaced C r as grain refiner, make alloy have good through hardening performance, reduced the content of impurity F e, Si, Mn simultaneously, make the plasticity and the fracture toughness of alloy obtain to improve or improve, so this alloy has high strength, high tenacity, good advantages such as quenching degree, in aeronautical material, obtain important application, be suitable for making the thick-walled parts of large aircraft.But this alloy shows great crackle tendency because of chemical composition, phase composition complexity when casting.This alloy flat bloom casting character is bad, and the crackle tendency is extremely serious, and the casting difficulty is very big.The difficult point of 77 series extra super duralumin alloy productions is exactly the casting of slab ingot.When adopting existing mould casting, not high because of having water-cooled skewness, water-cooling system control accuracy, cause melt internal stress skewness, cause producing the ingot casting crackle.
Summary of the invention
The purpose of this invention is to provide a kind of 77 series extra super duralumin alloy integrated water tank type crystallizers that are used to cast,, cause the ingot casting stress to concentrate the problem that produces the ingot casting crackle to solve existing crystallizer because of the water-cooled skewness.
The present invention solves the problems of the technologies described above the technical scheme of taking to be:
The integrated water tank type crystallizer that is used to cast 77 series extra super duralumin alloys of the present invention comprises crystallizer casing and crystallizer lower cover, the crystallizer lower cover is airtight to be arranged on the lower surface of crystallizer casing, on the big face of crystallizer casing, have flat through hole (madial wall of crystallizer casing is the crystallizer inner working face), described crystallizer also comprises four dividing plates, the cross-sectional profiles shape of described flat through hole is made of two arc sections and two straightways, and the both ends of two straightways respectively connect by arc section; Each arc section is formed by two different circular arc butt joints of diameter; The lower surface of sidewall has annular groove around the crystallizer casing, uniform several apopores that has on the lower surface of the annular water distributing pore wall body between flat through hole and the annular groove, and the lower end of each apopore tilts to the central axial direction of flat through hole; Four dividing plates are located at the two ends of annular groove respectively and annular groove are divided into four zones.Annular groove is water cavity.
The invention has the beneficial effects as follows:
Utilize mould casting of the present invention, can reduce crackle tendentiousness, improve yield rate, satisfy user demand.Crystallizer of the present invention is by being divided into four sections designs, and apopore diameter difference is controlled water flow, makes the ingot casting cooling evenly, guarantees temperature and Stress Field Distribution unanimity, and ingot casting crackle tendentiousness is reduced significantly.
The concrete advantage of the present invention mainly shows the following aspects:
1, crystallizer internal cavity is provided with secondary moisture fabric swatch, and the water that enters in the crystallizer is redistributed, and can make the crystallizer apopore that sufficient discharge is arranged, and the crystallizer facet is designed to circular arc simultaneously, and deflation resistance reduces, and can reduce crackle tendentiousness.
2, large and small water fender of locating to design of crystallizer can be realized the independent control of large and small water power, and stress distribution is even, reduces crackle tendentiousness.
3, the segmentation in crystallizer water hole control, water hole diameter of phi 3～Φ 4.5mm varies in size, and makes the interior melt temperature gradient of crystallizer little, and the ingot casting internal stress is evenly distributed, and has reduced crackle tendentiousness.
4, this crystallizer has designed oil outlet, can realize self-lubricate, can reduce the defective of drawing crack, avoids producing stress and concentrates, and reduces crackle tendentiousness.
5, the extra super duralumin alloy by this mould casting, the finished product rate can bring up to 70～85% by original 10%～20%, and has improved ingot quality, has improved properties of product.
Description of drawings
Fig. 1 is that master of the present invention looks cutaway view, and Fig. 2 is the upward view of Fig. 1, and Fig. 3 is the A portion enlarged drawing of Fig. 1.
The specific embodiment
The specific embodiment one: as illustrated in fig. 1 and 2, the integrated water tank type crystallizer that present embodiment is described to be used to cast 77 series extra super duralumin alloys comprises crystallizer casing 2 and crystallizer lower cover 5, crystallizer lower cover 5 is airtight to be arranged on the lower surface of crystallizer casing 2, on the big face of crystallizer casing 2, have flat through hole 2-1 (madial wall of crystallizer casing 2 is the crystallizer inner working face), described crystallizer also comprises four dividing plates 1, the cross-sectional profiles shape of described flat through hole 2-1 is made of two arc section 2-1-1 and two straightway 2-1-2, and the both ends of two straightway 2-1-2 respectively connect by arc section 2-1-1; Each arc section 2-1-1 is formed by two different circular arc butt joints of diameter; The lower surface of sidewall has annular groove 2-2 around the crystallizer casing 2, uniform several apopores 2-3-1 that has on the lower surface of annular water distributing pore wall body 2-3 between flat through hole 2-1 and the annular groove 2-2, the lower end of each apopore 2-3-1 tilts to the central axial direction of flat through hole 2-1; Four dividing plates 1 are located at the two ends of annular groove 2-2 respectively and annular groove 2-2 are divided into four zones.Outlet discharge can be realized controlling respectively in four zones, guarantees the ingot casting cooling evenly.
Arc section 2-1-1 forms the facet of crystallizer, and straightway 2-1-2 forms the big face of crystallizer; Big of crystallizer and facet water cavity transition position are provided with water-stop sheet, and large and small water is controlled separately, guarantee the ingot casting cooling evenly, and internal stress distributes consistent with the temperature field.
The specific embodiment two: as illustrated in fig. 1 and 2, the described crystallizer of present embodiment also comprises two facet water distributing plates 3 and two big face water distributing plates 4, described two facet water distributing plates 3 are separately positioned between two dividing plates 1 of annular groove 2-2 end, and described two big face water distributing plates 4 are separately positioned between two dividing plates 1 at annular groove 2-2 middle part.Two facet water distributing plates 3 and two big face water distributing plates 4 can be realized the secondary water distribution, make water outlet more even.Other composition and annexation are identical with the specific embodiment one.
The specific embodiment three: as illustrated in fig. 1 and 2, perpendicular bisector Y with annular water distributing pore wall body 2-3 lower surface in the present embodiment is reference, with perpendicular bisector Y is that the diameter of the apopore 2-3-1 in the 600mm zone, center is 4.5, the diameter of apopore 2-3-1 in past each 100mm zone, both sides is 4mm, described arc section 2-1-1 and straightway 2-1-2 transition position central angle are that the diameter of 40 ° of apopore 2-3-1 in the zone is 3.5, and the diameter of the apopore 2-3-1 of all the other positions of annular water distributing pore wall body 2-3 lower surface is 3mm.Other composition and annexation are identical with the specific embodiment one or two.
The segmentation control in crystallizer water hole, water hole diameter of phi 3～4.5mm varies in size, large and small of crystallizer is located design water fender, can realize the independent control of large and small water power, and crystallizer internal cavity is provided with secondary moisture fabric swatch, the water that enters in the crystallizer is redistributed, can make the crystallizer apopore that sufficient discharge is arranged, the crystallizer facet is designed to circular arc simultaneously, and deflation resistance reduces, and can reduce crackle tendentiousness.
The segmentation control in crystallizer water hole, water hole diameter of phi 4.5～3mm varies in size, large and small of crystallizer is located design water fender, can realize the independent control of large and small water power, and crystallizer internal cavity is provided with secondary moisture fabric swatch, the water that enters in the crystallizer is redistributed, can make the crystallizer apopore that sufficient discharge is arranged, the crystallizer facet is designed to circular arc simultaneously, and deflation resistance reduces, and crystallizer has designed oil outlet in addition, can realize self-lubricate, can reduce the defective of drawing crack, avoid producing stress and concentrate, reduce crackle tendentiousness.
Claims (3)
1. integrated water tank type crystallizer that is used to cast 77 series extra super duralumin alloys, described crystallizer comprises crystallizer casing (2) and crystallizer lower cover (5), crystallizer lower cover (5) is airtight to be arranged on the lower surface of crystallizer casing (2), on the big face of crystallizer casing (2), have flat through hole (2-1), it is characterized in that: described crystallizer also comprises four dividing plates (1), the cross-sectional profiles shape of described flat through hole (2-1) is made of two arc sections (2-1-1) and two straightways (2-1-2), and the both ends of two straightways (2-1-2) respectively connect by arc section (2-1-1); Each arc section (2-1-1) is formed by two different circular arc butt joints of diameter; The lower surface of sidewall has annular groove (2-2) around the crystallizer casing (2), uniform several apopores (2-3-1) that have on the lower surface of the annular water distributing pore wall body (2-3) between flat through hole (2-1) and the annular groove (2-2), the lower end of each apopore (2-3-1) tilts to the central axial direction of flat through hole (2-1); Four dividing plates (1) are located at the two ends of annular groove (2-2) respectively and annular groove (2-2) are divided into four zones.
2. the integrated water tank type crystallizer that is used to cast 77 series extra super duralumin alloys according to claim 1, it is characterized in that: described crystallizer also comprises two facet water distributing plates (3) and two big face water distributing plates (4), described two facet water distributing plates (3) are separately positioned between two dividing plates (1) that are positioned at annular groove (2-2) end, and described two big face water distributing plates (4) are separately positioned between two dividing plates (1) that are positioned at annular groove (2-2) middle part.
3. the integrated water tank type crystallizer that is used to cast 77 series extra super duralumin alloys according to claim 1 and 2, it is characterized in that: the perpendicular bisector (Y) with annular water distributing pore wall body (2-3) lower surface is reference, with perpendicular bisector (Y) is that the diameter of the apopore (2-3-1) in the 600mm zone, center is 4.5mm, the diameter of the apopore (2-3-1) in past each 100mm zone, both sides is 4mm, described arc section (2-1-1) and straightway (2-1-2) transition position central angle are that the diameter of 40 ° of apopores (2-3-1) in the zone is 3.5mm, and the diameter of the apopore (2-3-1) of all the other positions of annular water distributing pore wall body (2-3) lower surface is 3mm.
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| CN2009103124132A CN101722282B (en) | 2009-12-28 | 2009-12-28 | Integrated water tank type crystallizer used for casting 7 series extra super duralumin alloy |
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| CN2009103124132A CN101722282B (en) | 2009-12-28 | 2009-12-28 | Integrated water tank type crystallizer used for casting 7 series extra super duralumin alloy |
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| CN101722282B true CN101722282B (en) | 2011-09-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101985160A (en) * | 2010-11-30 | 2011-03-16 | 西南铝业（集团）有限责任公司 | Preheating crystallizer |
| CN103949600B (en) * | 2014-05-12 | 2015-12-30 | 东北轻合金有限责任公司 | A kind of crystallizer preparing extra super duralumin alloy rectangle ingot |
| CN106513600B (en) * | 2016-12-30 | 2019-04-30 | 西南铝业（集团）有限责任公司 | A kind of crystallizer for casting and its inner cavity division box |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168187A (en) * | 2007-11-26 | 2008-04-30 | 苏州有色金属研究院有限公司 | Low-temperature intermediate frequency electromagnetic field adjuvant casting method for hard aluminum flat section ingot |
| CN101185958A (en) * | 2007-11-30 | 2008-05-28 | 苏州有色金属研究院有限公司 | Crystallizer for aluminum alloy electromagnetic field auxiliary semi-continuous casting |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168187A (en) * | 2007-11-26 | 2008-04-30 | 苏州有色金属研究院有限公司 | Low-temperature intermediate frequency electromagnetic field adjuvant casting method for hard aluminum flat section ingot |
| CN101185958A (en) * | 2007-11-30 | 2008-05-28 | 苏州有色金属研究院有限公司 | Crystallizer for aluminum alloy electromagnetic field auxiliary semi-continuous casting |
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