CN116140565A - Double water-cooling crystallizer of deformation aluminum alloy - Google Patents
Double water-cooling crystallizer of deformation aluminum alloy Download PDFInfo
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- CN116140565A CN116140565A CN202211690141.1A CN202211690141A CN116140565A CN 116140565 A CN116140565 A CN 116140565A CN 202211690141 A CN202211690141 A CN 202211690141A CN 116140565 A CN116140565 A CN 116140565A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/07—Lubricating the moulds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
A deformed aluminum alloy double-row water-cooling crystallizer comprises an oil way gland, a water inlet filter screen, a double-row water tank body, a pneumatic control valve and a water-cooling gland; the double-row water tank body is provided with a through hollow cavity, four water-cooling pressing covers are respectively packaged on the peripheral side walls of the double-row water tank body, the water-cooling pressing covers and the double-row water tank body form an upper water chamber and a lower water chamber which are closed, an oil-way pressing cover is arranged on the upper surface of the double-row water tank body, a pneumatic control valve is arranged at four corners of the lower surface of the double-row water tank body, a water inlet filter screen is arranged at four corners of the double-row water tank body, the water inlet filter screen is communicated with the upper water chamber and the lower water chamber which are closed, an upper water discharging hole and a lower water discharging hole are circumferentially arranged at the bottom of an inner cavity of the double-row water tank body, the upper water discharging hole and the lower water discharging hole are corresponding to the upper water chamber and the lower water chamber, and water outlet of the upper water discharging hole and the lower water discharging hole is controlled by the pneumatic control valve. The invention improves the surface quality of the cast ingot, reduces the cracking and crack waste products of the cast ingot, and is suitable for the production and manufacture of deformed aluminum alloy with smaller solid-liquid area.
Description
Technical Field
The invention relates to a box-type crystallizer, in particular to a deformed aluminum alloy double-row water-cooling crystallizer.
Background
In recent years, aluminum alloys have been widely used in the fields of aerospace, military projects, and the like. When the traditional DC casting adopts a single drainage crystallizer to cast the deformed aluminum alloy with a smaller solid-liquid area, the bottom of the head is warped greatly, and the pulling crack and the crack are generated, so that the ingot yield is at a lower level.
For example, CN101722282a discloses a monolithic tank mold for casting 7-series super hard aluminum alloy, which is cast with single drain and is designed into an arc by the mold facets, the shrinkage resistance is reduced, the crack tendency is reduced, and individual control of the size facets water strength is achieved with a water deflector, but the ingot yield is at a lower level.
Disclosure of Invention
The invention provides a deformed aluminum alloy double-row water-cooling crystallizer for overcoming the defects of the prior art.
The deformed aluminum alloy double-row water-cooling crystallizer comprises an oil way gland, a water inlet filter screen, a double-row water tank body, a pneumatic control valve and a water-cooling gland; the double-row water tank body is provided with a through hollow cavity, four water-cooling press covers are respectively packaged on the peripheral side wall of the double-row water tank body, the water-cooling press covers and the double-row water tank body form a closed upper water chamber and a closed lower water chamber, an oil-way press cover is arranged on the upper surface of the double-row water tank body, a pneumatic control valve is arranged on the four corners of the lower surface of the double-row water tank body, a water inlet filter screen is arranged on the four corners of the double-row water tank body and is communicated with the closed upper water chamber and the closed lower water chamber, an upper water discharging hole and a lower water discharging hole are circumferentially arranged at the bottom of the inner cavity of the double-row water tank body, the upper water discharging hole and the lower water discharging hole correspond to the upper water chamber and the lower water chamber, an included angle between the axis of each water discharging hole of the upper water discharging hole and the vertical direction is beta, an included angle between the axis of each water discharging hole of the lower water discharging hole and the vertical direction is alpha, alpha is smaller than beta, and water discharging of the upper water discharging holes and the two water discharging holes are controlled by the pneumatic control valve.
Further, the water outlets are uniformly distributed, the diameter of each water outlet of the upper water discharge hole is 4 mm, beta=43°, the diameter of the water outlet of the lower water discharge hole is 3.5 mm, and alpha=23.
Further, the upper surface of the double-row water tank body is provided with a double-annular lubricating oil groove, lubricating oil is supplied through the oil inlet hole of the double-row water tank body, and the double-row water tank body is sealed by an oil way gland.
Compared with the prior art, the invention has the beneficial effects that:
the invention designs the single drainage crystallizer into the double drainage crystallizer, and has the main advantages that: 1. the lower cooling water impact area is positioned in the area with minimum conductivity and temperature rise on the surface of the cast ingot, so that the cooling effect of the cast ingot is ensured; 2. the sputtering of cooling water is eliminated, and the generation of an interference fountain is avoided; 3. the water cooling angle of the upper drain is increased, so that the water line of the cast ingot moves upwards, and the UCZ of the convection zone of the upstream heat conduction zone moves upwards, so that the cooling effect is better; 4. the water cooling intensity at the beginning of casting is further adjusted by freely switching the single water discharge and the double water discharge of the crystallizer. By using the double drainage crystallizer for casting, the surface quality of the cast ingot is improved, and the cracking and crack waste products of the cast ingot are reduced. The method is suitable for producing and manufacturing the deformed aluminum alloy with smaller solid-liquid area, and improves the ingot yield by 2%.
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples:
drawings
FIG. 1 is a schematic view of the overall structure of the present invention as seen from above;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic view of the overall structure of the present invention as seen from below;
FIG. 4 is a schematic illustration of an arrangement of two upper and lower drain holes and a double annular lubrication groove;
FIG. 5 is a schematic view of the structure of the water inlet filter screen;
FIG. 6 is a schematic view of a pneumatic control valve;
FIG. 7 is a schematic semi-sectional view of a pneumatic control valve.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
Embodiment 1 as shown in fig. 1 and 2, a deformed aluminum alloy double-row water-cooling crystallizer comprises an oil-way gland 1, a water inlet filter screen 2, a double-row water tank body 4, a pneumatic control valve 6 and a water-cooling gland 7;
the double-row water tank body 4 is provided with a through hollow cavity, four water cooling press covers 7 are respectively packaged on the peripheral side walls of the double-row water tank body 4, the water cooling press covers 7 and the double-row water tank body 4 form a closed upper water chamber and a closed lower water chamber, the oil way press cover 1 is arranged on the upper surface of the double-row water tank body 4, the pneumatic control valve 6 is arranged at four corners of the lower surface of the double-row water tank body 4, the water inlet filter screen 2 is arranged at four corners of the double-row water tank body 4, the water inlet filter screen 2 is communicated with the closed upper water chamber and the closed lower water chamber, an upper water discharging hole and a lower water discharging hole are circumferentially arranged at the bottom of the inner cavity of the double-row water tank body 4, the upper water discharging hole and the lower water discharging hole correspond to the upper water chamber and the lower water chamber, an included angle between the axis of each water discharging hole of the upper water discharging hole 4-1 and the vertical direction is beta, an included angle between the axis of each water discharging hole of the lower water discharging hole 4-2 and the vertical direction is alpha, alpha is smaller than beta, and water discharged by the pneumatic control valve 6.
The upper and lower drain holes are made in the hollow cavity (actual working surface of the crystallizer) of the crystallizer, the water inflow of the two drain holes is controlled by switching the pneumatic control valve 6, and then the double-row water cooling ingot is controlled.
In the embodiment, the double-row water cooling is used for producing the large-size aluminum alloy cast ingot, so that the extreme environment of cooling the tail part of the cast ingot at the beginning of the cast ingot is effectively avoided, the tendency of bottom crack is extremely easy to generate in the process of violent bouncing of the tail part of the cast ingot, the cast ingot yield is greatly improved, and a series of alloy process windows are stabilized and solidified.
Based on embodiment 2 and embodiment 1, as shown in fig. 2, four water cooling press covers 7 are respectively distributed around the double-row water tank 4 in this embodiment, four water inlet filter screens 2 are installed at four opposite angular positions on the upper surface of the double-row water tank 4, an oil way press cover 1 is installed on the upper surface of the double-row water tank 4, four pneumatic control valves 6 are installed at four opposite angular positions on the lower surface of the double-row water tank 4, four crystallizer hanging rings 3 are installed at four corners on the edge of the upper surface of the double-row water tank 4, and four water inlet quick connectors 5 are installed at the angular positions on the lower surface of the double-row water tank 4 and are communicated with the water inlet filter screens 2.
The section size of the casting ingot of the crystallizer with the double-row water cooling design is 520 multiplied by 1120mm.
The double-row water tank body 4 is made of 2A50 aluminum alloy. The primary water cooling is conducted through the surface heat conduction of the double-row water tank body 4, and the double-row water tank body is manufactured through a numerical control machining center by adopting 2A50 aluminum alloy forging manufacturing.
Example 4 on the basis of example 1, the upper surface of the double-row tank body 4 is provided with a double annular lubrication groove 4-3, and lubrication oil is supplied through the oil inlet hole 4-0 of the double-row tank body 4 and sealed with the oil path gland 1, as described with reference to fig. 3 and 4. The double-ring type sealing lubrication groove 4-3 used in the embodiment is designed, lubricating oil can be continuously and uniformly supplied to the crystallizer box body 4 from one point, and is uniformly distributed once through the outer ring, and then enters the inner ring lubrication groove, so that the lubricating oil can be effectively and uniformly supplied in production casting, and the surface quality of an ingot casting is ensured.
Further, the cross section outline shape of the hollow cavity of the double-row water tank body 4 is composed of an arc-shaped section and a plurality of straight-line sections, so that the double-row water tank body is convenient to process and manufacture, and continuous movement of cast ingots during casting is met. The water inlet filter screen 2 is of a cylinder structure.
Embodiment 5, the pneumatic control valve 6 of the present embodiment includes a housing 60, a lift cylinder 62, a limit spring 63, and a water hole gasket 64, as described in any of the above embodiments;
the shell 60 is fixed on the lower surface of the double-drainage box body 4, the cylinder body of the lifting cylinder 62 is connected with the shell 60, the water hole sealing gasket 64 is connected with the piston rod of the lifting cylinder 62, the limiting spring 63 is arranged in the shell 60, two ends of the limiting spring 63 are respectively connected with the bottom of the shell 60 and the water hole sealing gasket 64, and the side wall of the shell 60 is provided with the gas inlet 61.
When casting is produced, the compressed air giving time can be set according to the process requirement, so that the switching of single-row and double-row cooling water is controlled, when compressed air enters the lifting cylinder 62 from the compressed air inlet 61 and is subjected to the pressure of the air, the piston rod of the lifting cylinder 62 jacks up the water hole sealing gasket 64 (cuts off the water outlet of the lower water discharging hole), and when the air source is cut off, the water hole sealing gasket 64 is restored to the initial position (the water is discharged from the upper water discharging hole and the lower water discharging hole) under the action of the elastic potential energy of the limiting spring 63, so that the mutual switching operation of the pneumatic control valve is ensured.
The invention is designed and manufactured: 1. determining the size of an inner cavity of the crystallizer by measuring the reduction coefficient of the aluminum alloy and the cut-off surface sizes of cast ingots with different specifications of the same alloy; 2. selecting proper tool materials according to the characteristics of the crystallizer; 3. designing the upper edge and the lower edge of a cavity in the crystallizer into a certain gradient according to the characteristics of the aluminum alloy and some product defects occurring on site; 4. the inner cavity of the duralumin alloy crystallizer is an integral box body which is divided into an upper box body and a lower box body, and double-row water-cooling water supply is respectively provided; the casting process of the hard aluminum alloy can be freely switched according to the adjustment of the wind tunnel control valve 6; 6. in the design process of the crystallizer of the double-row water cooling system, through design adjustment of the angle of the crystallizer, the UCZ of the upstream heat conduction area of the ingot is moved upwards, the width of the stagnation area of ingot cooling is increased, and the water cooling distribution is changed at any time according to the process requirement, so that surface defects, cracks, pulling cracks, aluminum liquid leakage and the like are avoided.
The present invention has been described in terms of preferred embodiments, but is not limited to the invention, and any equivalent embodiments can be made by those skilled in the art without departing from the scope of the invention, as long as the equivalent embodiments are possible using the above-described structures and technical matters.
Claims (7)
1. A deformed aluminum alloy double-row water-cooling crystallizer is characterized in that: comprises an oil way gland (1), a water inlet filter screen (2), a double-row water tank body (4), a pneumatic control valve (6) and a water cooling gland (7);
the double-row water tank body (4) is provided with a through hollow cavity, four water cooling press covers (7) are respectively packaged on the peripheral side wall of the double-row water tank body (4), the water cooling press covers (7) and the double-row water tank body (4) form a closed upper water chamber and a closed lower water chamber, the oil way press cover (1) is arranged on the upper surface of the double-row water tank body (4), the pneumatic control valve (6) is arranged at four corners of the lower surface of the double-row water tank body (4), the water inlet filter screen (2) is arranged at four corners of the double-row water tank body (4), the water inlet filter screen (2) is communicated with the closed upper water chamber and the lower water chamber, the bottom of an inner cavity of the double-row water tank body (4) is provided with an upper water discharging hole and a lower water discharging hole which are corresponding to the upper water chamber and the lower water chamber, an included angle between the axis of each water discharging hole of the upper water discharging hole (4-1) and the vertical direction is beta, the included angle between the axis of each water discharging hole of the lower water discharging hole and the vertical direction is alpha, alpha is smaller than beta, and the water discharging of the upper water discharging hole and the lower water discharging hole is controlled by the control valve (6).
2. The deformed aluminum alloy double-row water-cooling crystallizer as claimed in claim 1, wherein: the water outlets are uniformly distributed, the diameter of each water outlet of the upper water discharge hole (4-1) is 4 mm, beta=43 degrees, the diameter of the water outlet of the lower water discharge hole (4-2) is 3.5 mm, and alpha=23.
3. The deformed aluminum alloy double-row water-cooling crystallizer as claimed in claim 1, wherein: the upper surface of the double-row water tank body (4) is provided with a double-annular lubricating oil groove (4-3), lubricating oil is supplied through the oil inlet hole of the double-row water tank body (4), and the double-row water tank body is sealed by an oil way gland (1).
4. The deformed aluminum alloy double-row water-cooling crystallizer as claimed in claim 1, wherein: the double-row water tank body (4) is made of 2A50 aluminum alloy.
5. The deformed aluminum alloy double-row water-cooling crystallizer as claimed in claim 1, wherein: the water inlet quick connector (5) is arranged at the corner of the lower surface of the double-drainage box body (4) and is communicated with the water inlet filter screen (2).
6. The deformed aluminum alloy double-row water-cooling crystallizer as claimed in claim 1, wherein: the cross section outline shape of the hollow cavity of the double-row water tank body (4) is composed of an arc-shaped section and a plurality of straight-line sections.
7. The deformed aluminum alloy double-row water-cooling crystallizer as claimed in claim 1, wherein: the water inlet filter screen (2) is of a cylinder type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211690141.1A CN116140565A (en) | 2022-12-27 | 2022-12-27 | Double water-cooling crystallizer of deformation aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211690141.1A CN116140565A (en) | 2022-12-27 | 2022-12-27 | Double water-cooling crystallizer of deformation aluminum alloy |
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| Publication Number | Publication Date |
|---|---|
| CN116140565A true CN116140565A (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211690141.1A Pending CN116140565A (en) | 2022-12-27 | 2022-12-27 | Double water-cooling crystallizer of deformation aluminum alloy |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2152287C1 (en) * | 1999-04-13 | 2000-07-10 | Уральский государственный технический университет | Mould for continuous casting of ingots |
| CN101168186A (en) * | 2007-11-26 | 2008-04-30 | 苏州有色金属研究院有限公司 | Continuous lubricating crystallizer for aluminum alloy semi-continuous casting |
| CN101829766A (en) * | 2010-06-07 | 2010-09-15 | 苏州有色金属研究院有限公司 | Crystallizer for semi-continuous casting of aluminum alloy |
| CN102581238A (en) * | 2012-03-07 | 2012-07-18 | 苏州有色金属研究院有限公司 | Crystallizer with changeable cooling intensity in semicontinuous casting of aluminum alloy |
| CN104368772A (en) * | 2014-12-01 | 2015-02-25 | 洛阳双瑞达特铜有限公司 | Integrated crystallizer for slab ingot |
| CN104511578A (en) * | 2013-09-30 | 2015-04-15 | 西安麦特沃金液控技术有限公司 | Vertical semi-continuous casting machine crystallizer cooling device |
| CN207806555U (en) * | 2017-12-26 | 2018-09-04 | 重庆西南铝机电设备工程有限公司 | A kind of automatic oil lubrication crystallizer |
| CN216758090U (en) * | 2022-01-20 | 2022-06-17 | 哈尔滨维尔基复合材料有限公司 | Crystallizer controlled by cooling water double channels |
-
2022
- 2022-12-27 CN CN202211690141.1A patent/CN116140565A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2152287C1 (en) * | 1999-04-13 | 2000-07-10 | Уральский государственный технический университет | Mould for continuous casting of ingots |
| CN101168186A (en) * | 2007-11-26 | 2008-04-30 | 苏州有色金属研究院有限公司 | Continuous lubricating crystallizer for aluminum alloy semi-continuous casting |
| CN101829766A (en) * | 2010-06-07 | 2010-09-15 | 苏州有色金属研究院有限公司 | Crystallizer for semi-continuous casting of aluminum alloy |
| CN102581238A (en) * | 2012-03-07 | 2012-07-18 | 苏州有色金属研究院有限公司 | Crystallizer with changeable cooling intensity in semicontinuous casting of aluminum alloy |
| CN104511578A (en) * | 2013-09-30 | 2015-04-15 | 西安麦特沃金液控技术有限公司 | Vertical semi-continuous casting machine crystallizer cooling device |
| CN104368772A (en) * | 2014-12-01 | 2015-02-25 | 洛阳双瑞达特铜有限公司 | Integrated crystallizer for slab ingot |
| CN207806555U (en) * | 2017-12-26 | 2018-09-04 | 重庆西南铝机电设备工程有限公司 | A kind of automatic oil lubrication crystallizer |
| CN216758090U (en) * | 2022-01-20 | 2022-06-17 | 哈尔滨维尔基复合材料有限公司 | Crystallizer controlled by cooling water double channels |
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