CN101138782A - Hollow round ingot casting hot-top casting device and method for casting hollow tube thereof - Google Patents
Hollow round ingot casting hot-top casting device and method for casting hollow tube thereof Download PDFInfo
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- CN101138782A CN101138782A CNA2007100535995A CN200710053599A CN101138782A CN 101138782 A CN101138782 A CN 101138782A CN A2007100535995 A CNA2007100535995 A CN A2007100535995A CN 200710053599 A CN200710053599 A CN 200710053599A CN 101138782 A CN101138782 A CN 101138782A
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Abstract
A hollow circle cast ingot hot top casting device and a method of manufacturing a hollow tubular product relate to a device and a method used in casting thin-walled hollow tube. The device consists of an overcoat, a mandrel support, a core and a continuous processing machine of core hot top, a core graphite set, a condensate tank, a hot top of condensate tank and a graphite bush of condensate tank, a core intake pipe, a water outlet, a water inlet tank, a water outlet of condensate tank an a dummy ingot. The manufacture method is: high-temperature aluminum alloy liquid flows from an opening of the hot top of condensate tank and the core hot top and is cooled by cooling water in the core and the condensate tank. The dummy ingot is driven by a semicontinuous casting machine and moves down at a steady speed, thereby making the liquid steadily flow into a crystalline belt in which the liquid crystallizes slowly to form an ingot tube. Surface segregation aliquation float of thin-walled hollow tube manufactured by the present invention is less than 1mm. A crystal grain with few air holes and inclusion defects is small. Grain size is up to the first grade and metal plasticity is improved, which is favorable for processing and able to reduce cost. Moreover, the present invention is able to create good environment for operation and produce little environmental pollution.
Description
Technical field
The present invention relates to a kind of device and casting method thereof that is used to cast thin-wall hollow pipe.
Background technology
Current domestic, have only the filled circles ingot casting to realize that hot direct casting makes.The hollow wall pipe adopts ordinary mould casting, height owing to liquid level during casting is manually operated, very unstable, and the liquid level difference of different operators control, oxide-film is also usually destroyed, causing a large amount of oxide inclusions to take in the ingot casting goes, because more than the zone of a crystal height 80mm, form secondary remelt chance, so segregation emersion thing defective is serious, surface segregation knurl height reaches 2-3mm, the darkest 5mm that reaches, particularly big specification Φ 300* (40-50mm) ingot casting, qualified casting has only about 50%; Owing to wall book (30-50mm), liquid stream center is not easy control, so be easy to produce the cast gate crackle in addition.
" horizontal continuous casting of toothed ring tube of synchronizer method and equipment thereof " (93120535), its process is identical with the process of common existing level continuously cast billet for pipe-making, still be by alloy requirement batching → melting → casting dummy ingot, by controlling alloying component, furnace temperature, hydraulic pressure, stopping technological parameters such as degree of drawing, pipe hauling speed and startup method, thereby the alloy solution of controlling well solidifies the position in crystallizer, be used to produce the above special brass light-wall pipe of five elements.
Summary of the invention
The objective of the invention is at above-mentioned present situation, aim to provide a kind of energy refinement ingot casting crystal grain, improve the ingot casting grain size, reduced or eliminated casting segregation emersion thing, basic stratification and the crackle of eliminating ingot casting, pore, inclusion defect are few, the hollow round ingot casting hot-top casting device that production cost is low and the method for casting hollow tube thereof.
The implementation of the object of the invention is, hollow round ingot casting hot-top casting device, overcoat has the water inlet pore that links to each other with inlet water tank 19, dress condensate tank(trap) 3 in the overcoat 2, condensate tank(trap) 3 internal upper parts dress condensate tank(trap) hot top 9, bottom dress condensate tank(trap) graphite bushing 5, condensate tank(trap) apopore 20 is arranged at the bottom, fuse 12 tops cover fuse hot top 11, bottom cover fuse graphite cannula 10, form zone of a crystal between fuse graphite cannula 10 and the condensate tank(trap) graphite bushing 5,16 on fuse support is equipped with spacing gland 4 outside the condensate tank(trap) 3 on spacing gland 4, adorn the fixedly hold-doun nut 17 of fuse water inlet pipe 18 on the fuse support 16, fuse water inlet pipe 18 is by fuse support 16, the bottom margin of the hollow and fuse of fuse 12 is communicated with apopore 21, fuse plug wire 8 is arranged at the bottom of the hollow centre of fuse 12, and fuse water inlet pipe 18 has pressing plate 13 with the fuse junction surface, fuse sealing ring 15, dummy ingot 1 bottom is contained on the semicontinuous casting machine, top is stretched in the graphite bushing 5, and overcoat 2 links to each other with inlet water tank 19 by bolt 7.
Method with the hollow round ingot casting hot-top casting device casting hollow tube, the high temperature aluminium alloys liquation is from the opening part inflow graphite bushing 5 of condensate tank(trap) hot top 9 and the passage between the fuse graphite cannula 10, the liquation bottom is held by dummy ingot 1, cooling water from fuse water inlet pipe 18 through the hollow cooling fuse of fuse, by fuse cooling fuse graphite cannula 10, cooling water flows out from fuse apopore 21, cooling water is entered by overcoat 2 by inlet water tank 19, cooling condensation groove 3, by condensate tank(trap) cooling condensation groove graphite bushing 5, cooling water flows out from condensate tank(trap) apopore 20, start semicontinuous casting machine, dummy ingot 1 is along with the drive of semicontinuous casting machine, at the uniform velocity slowly move downward, the also continuous thereupon opening part from condensate tank(trap) hot top 9 of liquation flows into, through the zone of a crystal that forms between fuse graphite cannula 10 and the condensate tank(trap) graphite bushing 5, slowly crystallization forms the ingot casting pipe.
The present invention uses for reference the technology that the hot direct casting of filled circles ingot casting is made, because the graphite crystallization band is short, the liquid cave of casting process is shallow, has has greatly reduced or eliminated casting segregation emersion thing, and surface segregation emersion thing is eliminated the stratification and the crackle of ingot casting substantially less than 1mm; Because the in-mold molten surface is not stirred, eliminate artificial chance of stirring aluminium liquid, form liquid level stably, surface film oxide protects inner aluminium liquid not reoxidize all the time, reduce oxide inclusion and sneak into ingot casting, crackle and the post-job pollution again of refining of metal of effectively avoiding cast gate to produce; Because once cooling is short with the secondary cooling interval, energy refinement ingot casting crystal grain improves the ingot casting grain size, the also corresponding minimizing of pore, inclusion defect; Because graphite has lubrication, casting process does not need to lubricate, and has saved a large amount of lubricating oil, reduces production costs, and has greatly improved operating environment, reduces environmental pollution.
Adopt the present invention to improve the surface quality and the internal soundness of aluminium-alloy pipe bus, lumber recovery more than 20%, reduces process loss than raising with former conventional cast, has improved economic benefit; The grain size of ingot casting can reach 1 grade, has improved plastic deformation, helps processing.
But various hollow tubes such as the present invention's cast tube bus.
Description of drawings
Accompanying drawing is the hollow round ingot casting hot-top casting device structural representation
The specific embodiment
With reference to accompanying drawing, hollow round ingot casting hot-top casting device is by overcoat 2 and be contained in fuse support 16 on the spacing gland 4, fuse 12 and upper and lower cover fuse hot top 11, the fuse graphite cannula 10 that overlaps, condensate tank(trap) 3, condensate tank(trap) hot top 9 and condensate tank(trap) graphite bushing 5, fuse water inlet pipe 18 and fuse apopore 21, inlet water tank 19 and condensate tank(trap) apopore 20, fuse plug wire 8 and be contained in dummy ingot 1 composition such as grade on the semicontinuous casting machine.Fuse water inlet pipe 18 has pressing plate 13, fuse sealing ring 15 with the fuse junction surface, and pressing plate 13 is connected and fixed with fuse sealing ring 15 usefulness bolts 14.Between condensate tank(trap) 3 and the water tank 19 sealing ring 6 is arranged.
The high 30-50mm of zone of a crystal that forms between fuse graphite cannula 10 and the condensate tank(trap) graphite bushing 5.
Method with the hot ejection device casting hollow tube of hollow round ingot casting, the high temperature aluminium alloys liquation is from the opening part inflow graphite bushing 5 of condensate tank(trap) hot top 9 and the passage between the fuse graphite cannula 10, the liquation bottom is held by dummy ingot 1, cooling water from fuse water inlet pipe 18 through the hollow cooling fuse of fuse, by fuse cooling fuse graphite cannula 10, cooling water flows out from fuse apopore 21, cooling water is entered by overcoat 2 by inlet water tank 19, cooling condensation groove 3, by condensate tank(trap) cooling condensation groove graphite bushing 5, cooling water flows out from condensate tank(trap) apopore 20, start semicontinuous casting machine, dummy ingot 1 is along with the drive of semicontinuous casting machine, at the uniform velocity slowly move downward, the also continuous thereupon opening part from condensate tank(trap) hot top 9 of liquation flows into, through the zone of a crystal that forms between fuse graphite cannula 10 and the condensate tank(trap) graphite bushing 5, slowly crystallization forms the ingot casting pipe.
For the intensity of cooling of guaranteeing overcoat and fuse should be consistent, fuse water inlet pipe 18, inlet water tank 19 adopt same water main, with the control flow of inlet water, casting water supply start hydraulic pressure 0.05-0.1Mpa, treat that aluminium liquid all is full of zone of a crystal, dummy ingot 1 begins to descend water supply pressure 0.10-0.20Mpa.
Cast 6063 alloy Φ 290*40mm ingot castings with the present invention:
Casting temperature: 710-730 ℃
Casting speed: 70-80mm/ branch
Overcoat and fuse cool but hydraulic pressure: 0.10-0.20Mpa
Zone of a crystal height h==50mm
Ingot casting surface flawless, stratification, about segregation emersion thing 1mm, surface quality is better.
Claims (4)
1. hollow round ingot casting hot-top casting device, it is characterized in that overcoat has the water inlet pore that links to each other with inlet water tank (19), dress condensate tank(trap) (3) in the overcoat (2), condensate tank(trap) (3) internal upper part dress condensate tank(trap) hot top (9), bottom dress condensate tank(trap) graphite bushing (5), condensate tank(trap) apopore (20) is arranged at the bottom, fuse (12) top cover fuse hot top (11), bottom cover fuse graphite cannula (10), form zone of a crystal between fuse graphite cannula (10) and the condensate tank(trap) graphite bushing (5), fuse support (16) props up on spacing gland (4), the outer spacing gland (4) that is equipped with of condensate tank(trap) (3), fuse support (16) is gone up the fixedly hold-doun nut (17) of fuse water inlet pipe (18) of dress, fuse water inlet pipe (18) is by fuse support (16), the bottom margin of the hollow and fuse of fuse (12) is communicated with apopore (21), fuse plug wire (8) is arranged at the bottom of the hollow centre of fuse (12), fuse water inlet pipe (18) has pressing plate (13) with the fuse junction surface, fuse sealing ring (15), dummy ingot (1) bottom is contained on the semicontinuous casting machine, top is stretched in the graphite bushing (5), and overcoat (2) links to each other with inlet water tank (19) by bolt (7).
2. hollow round ingot casting hot-top casting device according to claim 1 is characterized in that the high 30-50mm of zone of a crystal that forms between fuse graphite cannula (10) and the condensate tank(trap) graphite bushing (5).
3. use the method for the described hollow round ingot casting hot-top casting device casting hollow tube of claim 1, it is characterized in that the high temperature aluminium alloys liquation is from the opening part inflow graphite bushing (5) of condensate tank(trap) hot top (9) and the passage between the fuse graphite cannula (10), the liquation bottom is held by dummy ingot (1), cooling water from fuse water inlet pipe (18) through the hollow cooling fuse of fuse, by fuse cooling fuse graphite cannula (10), cooling water flows out from fuse apopore (21), cooling water is entered by overcoat (2) by inlet water tank (19), cooling condensation groove (3), by condensate tank(trap) cooling condensation groove graphite bushing (5), cooling water flows out from condensate tank(trap) apopore (20), start semicontinuous casting machine, dummy ingot (1) is along with the drive of semicontinuous casting machine, at the uniform velocity slowly move downward, liquation also thereupon constantly from the opening part inflow of condensate tank(trap) hot top (9), passes through the zone of a crystal that forms between fuse graphite cannula (10) and the condensate tank(trap) graphite bushing (5), slowly crystallization forms the ingot casting pipe.
4. the method for hollow round ingot casting hot-top casting device casting hollow tube according to claim 3, it is characterized in that fuse water inlet pipe (18), inlet water tank (19) adopt same water main, with the control flow of inlet water, casting water supply start hydraulic pressure 0.05-0.1Mpa, treat that aluminium liquid all is full of zone of a crystal, dummy ingot (1) begins to descend water supply pressure 0.10-0.20Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100535995A CN101138782A (en) | 2007-10-22 | 2007-10-22 | Hollow round ingot casting hot-top casting device and method for casting hollow tube thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100535995A CN101138782A (en) | 2007-10-22 | 2007-10-22 | Hollow round ingot casting hot-top casting device and method for casting hollow tube thereof |
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| CN101138782A true CN101138782A (en) | 2008-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100535995A Pending CN101138782A (en) | 2007-10-22 | 2007-10-22 | Hollow round ingot casting hot-top casting device and method for casting hollow tube thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794416A (en) * | 2012-07-19 | 2012-11-28 | 苏州有色金属研究院有限公司 | Aluminum alloy hollow ingot semi-continuous casting crystallizer and application thereof |
| CN104923753A (en) * | 2015-06-30 | 2015-09-23 | 洛阳双瑞达特铜有限公司 | Core print for vertical type semicontinuous casting of thin-wall hollow cast tube |
| CN114309504A (en) * | 2021-12-28 | 2022-04-12 | 东北轻合金有限责任公司 | Deformed aluminum alloy hollow ingot hot top casting crystallizer |
-
2007
- 2007-10-22 CN CNA2007100535995A patent/CN101138782A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794416A (en) * | 2012-07-19 | 2012-11-28 | 苏州有色金属研究院有限公司 | Aluminum alloy hollow ingot semi-continuous casting crystallizer and application thereof |
| CN104923753A (en) * | 2015-06-30 | 2015-09-23 | 洛阳双瑞达特铜有限公司 | Core print for vertical type semicontinuous casting of thin-wall hollow cast tube |
| CN114309504A (en) * | 2021-12-28 | 2022-04-12 | 东北轻合金有限责任公司 | Deformed aluminum alloy hollow ingot hot top casting crystallizer |
| CN114309504B (en) * | 2021-12-28 | 2023-07-11 | 东北轻合金有限责任公司 | Deformed aluminum alloy hollow ingot hot top casting crystallizer |
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