CN102794416A - Aluminum alloy hollow ingot semi-continuous casting crystallizer and application thereof - Google Patents
Aluminum alloy hollow ingot semi-continuous casting crystallizer and application thereof Download PDFInfo
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Abstract
The invention relates to an aluminum alloy hollow ingot semi-continuous casting crystallizer and application thereof. A water diversion ring is arranged in a cooling water cavity of a water jacket; a water spraying hole communicated with the cooling water cavity is toward a cooling wall of an outer crystallizer; an outer lubricant channel is arranged in the outer crystallizer body; one end of the outer lubricant channel is formed on the outer oil storage groove; an outer oil injection ring on the outer oil storage groove is toward a cooling wall of the outer crystallizer body; an outer heat preservation cap is fixed on the outer crystallizer body; a core body is placed in the center of the outer crystallizer body; the inner side of the core body is of a hollow structure; a water inlet pipe is arranged on the core body; a water outlet pipe coaxial to the water inlet pipe is sleeved on the outer side of the water inlet pipe; an inner lubricant channel is arranged in the core body; one end of the inner lubricant channel is formed in the inner oil storage groove; an inner oil injection oil ring on the inner oil storage groove is toward the core cooling wall; and an inner heat preservation cap is fixed on the core body. The hollow ingot is cooled by circulating water during casting; and the cooling walls of the outer crystallizer body and the core are subjected to pulse-type oil injection lubrication, so that the fineness of the inner surface and the outer surface of the hollow ingot can be obviously improved, and the peeling amount before subsequent plastic processing is reduced.
Description
Technical field
The present invention relates to aluminium alloy hollow ingot D.C.casting crystallizer and application thereof, belong to the aluminium alloy casting technical field.
Background technology
The common production method of aluminium alloy hollow ingot has two kinds: a kind of is at first to cast out the solid bar base, obtains hollow ingot through extruding or perforation; Another kind is to use the crystallizer of being made up of outer crystallizer and fuse, directly casts out hollow ingot with the method for D.C.casting.Compare with the former, a kind of mode in back has remarkable advantages such as operation is few, with short production cycle, energy consumption is low, using rate of metal height, and can produce the hollow ingot of difficult perforation.Therefore, D.C.casting Direct Production hollow ingot is the main mode of producing the aluminium alloy hollow ingot at present.But because traditional hollow ingot crystallizer cooling wall length is bigger; And there is not hot top hot top; Molten metal gets into die cavity through depositing funnel from the top, therefore when adopting this crystallizer to produce hollow ingot, and defective such as very easily form surperficial cold shut, segregation knurl, be mingled with; Railway carriage, bore hole amount are very big before extruding, greatly reduce using rate of metal and integrated yield.
Patent publication No. is that the Chinese patent of CN201154392Y discloses " a kind of hot top hollow ingot crystallizer "; On crystallizer and the fuse hot top is set respectively outside, cooling water cools off the inside and outside surface of hollow ingot respectively through the hole for water spraying of outer crystallizer and fuse during casting.This method helps the gas in the melt and is mingled with come-up, thereby reduce hollow ingot inner air vent, inclusion defect owing to used hot top during casting.But because structure is limited by hot top; This crystallizer can not be to the inside and outside surperficial oil injecting lubricating of hollow ingot in casting process; Owing to have friction between base shell and the crystallizer cooling wall, so hollow ingot, the particularly surface quality of high-alloying aluminium alloy heart ingot remain still further to be improved.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of aluminium alloy hollow ingot D.C.casting crystallizer and application thereof are provided.
The object of the invention is realized through following technical scheme:
Aluminium alloy hollow ingot D.C.casting crystallizer comprises water jacket, outer crystallizer body and mandrel body, and water jacket is connected with outer crystallizer body; It is characterized in that: be provided with the branch water ring in the cooling water cavity of water jacket; Hole for water spraying outward crystallizer cooling wall with cooling water cavity connects is provided with outer grease channel in the outer crystallizer body, and outer grease channel one end links to each other with fueller through fuel feed pump; The other end is opened on outer oil storage tank; Be pressed on the outer oiling ring outward crystallizer cooling wall on the outer oil storage tank, be fixed with outer hot top on the crystallizer body outside, the hot top side is provided with the same level chute outside; Mandrel body places the middle position of outer crystallizer body; The inside of mandrel body is hollow structure, forms the water storage cavity, and its bottom is sealed by plug; Be provided with water inlet pipe in the mandrel body; The inner chamber of water inlet pipe is connected with the water storage cavity, and water inlet pipe is arranged with outlet pipe outward, and the inner chamber that forms between the inwall of outlet pipe and the outer wall of water inlet pipe is connected with the water storage cavity; Be provided with interior grease channel in the mandrel body; Interior grease channel one end links to each other with fueller through fuel feed pump; The other end is opened on interior oil storage tank; Interior oiling ring in being pressed on the oil storage tank is towards the fuse cooling wall, and the tapered configuration that the fuse cooling wall is big up and small down is fixed with interior hot top on the mandrel body.
Further, above-mentioned aluminium alloy hollow ingot D.C.casting crystallizer, the height of said interior hot top and outer hot top is 50 ~ 200mm.
Further, above-mentioned aluminium alloy hollow ingot D.C.casting crystallizer, the height of said outer crystallizer cooling wall is 30 ~ 50mm, the height of fuse cooling wall is 30 ~ 100mm.
Further, above-mentioned aluminium alloy hollow ingot D.C.casting crystallizer, the material of outer oiling ring is a metal, outer oiling ring with contacted week of outer oil storage tank upwards evenly offer the slit, the width in slit and highly all are 0.1 ~ 0.5mm.
Again further, above-mentioned aluminium alloy hollow ingot D.C.casting crystallizer, the material of interior oiling ring is a metal, contacted week of interior oiling ring and interior oil storage tank upwards evenly offered the slit, the width in slit and highly all are 0.1 ~ 0.5mm.
Crystallizer of the present invention is realized aluminium alloy hollow ingot D.C.casting, and the same level chute gets into crystallizer to aluminium liquid from outer hot top side during casting, and the water-cooled effect forms scull just down;, hot top inner metal liquid position starts casting machine after highly reaching requirement; Casting speed is 80 ~ 120mm/min, and with pulse mode to the crystallizer fuel feeding, the inside and outside surface to hollow ingot is lubricated respectively; Cooling water gets into cooling water cavity after undue water ring flow to the hollow ingot outer surface from hole for water spraying cools off; Lubricating oil is filled outer oil storage tank through grease channel, and flows out via the slit of outer oiling ring, the outer crystallizer cooling wall of oil lubrication; Cooling water gets into the inner water storage cavity of mandrel body by water inlet pipe, is discharged by coaxial outlet pipe behind the cooling fuse, and lubricating oil flows out oil lubrication fuse cooling wall through fuse grease channel and interior oil storage tank through the slit of interior oiling ring; Lubricating oil is lubricated the inside and outside surface of hollow ingot respectively with pulse mode, and lubricating oil pressure is 1 ~ 10kPa, and frequency is 1 ~ 20 time/min, finishes up to casting.
Substantive distinguishing features and obvious improvement that technical scheme of the present invention is outstanding are mainly reflected in:
Crystallizer cooling wall height is little, and therefore the external cooling wall oil injecting lubricating of crystallizer and fuse in the D.C.casting process can significantly improve the inside and outside surface smoothness of hollow ingot, reduces the peeling amount before the follow-up plastic working.Crystallizer is established hot top hot top, helps the come-up that is mingled with in the aluminium alloy solution, can reduce the content that is mingled with in the hollow ingot.Adopt the same level pouring type, can a plurality of crystallizers be installed on the same casting platform and produce, liquid level control is convenient, and production efficiency is high.The fuse bottom lock adopts the type of cooling cooling hollow ingot inner surface of recirculated water, has thoroughly avoided the fuse position to leak the potential safety hazard that aluminium sets off an explosion.Be applicable to the production of allotype aluminum alloy hollow ingots such as circle and rectangle, polygon.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Fig. 1: the structural representation that dissects of the present invention;
Fig. 2: the structural representation of outer oiling ring;
The A-A of Fig. 3: Fig. 2 cuts open sketch map;
The I portion enlarged diagram of Fig. 4: Fig. 2.
The specific embodiment
As shown in Figure 1, aluminium alloy hollow ingot D.C.casting crystallizer comprises water jacket 1, outer crystallizer body 2 and mandrel body 17; Water jacket 1 is connected with outer crystallizer body 2, is provided with branch water ring 3 in the cooling water cavity of water jacket 1, the hole for water spraying 5 outward crystallizer cooling walls 4 that connect with cooling water cavity; Be provided with outer grease channel 6 in the outer crystallizer body 2; Outer grease channel 6 one ends link to each other with fueller through fuel feed pump, and the other end is opened on outer oil storage tank 7, is pressed on the outer oiling ring 8 outward crystallizer cooling walls 4 on the outer oil storage tank 7; Be fixed with outer hot top 9 outside on the crystallizer body 2, hot top 9 sides are provided with the same level chute outside; Mandrel body 17 places the middle position of outer crystallizer body 2; The inside of mandrel body 17 is hollow structure, forms the water storage cavity, and its bottom is sealed by plug; Be provided with water inlet pipe 12 in the mandrel body 17; The inner chamber of water inlet pipe 12 is connected with the water storage cavity, the outer outlet pipes coaxial 13 that are arranged with of water inlet pipe 12 with it, and the inner chamber that forms between the outer wall of the inwall of outlet pipe 13 and water inlet pipe 12 is connected with the water storage cavity; Grease channel 14 in being provided with in the mandrel body 17; Interior grease channel 14 1 ends link to each other with fueller through fuel feed pump; The other end is opened on interior oil storage tank 15; Interior oiling ring 16 in being pressed on the oil storage tank 15 is towards fuse cooling wall 18, the tapered configuration that fuse cooling wall 18 is big up and small down, hot top 11 in being fixed with on the mandrel body 17.
Like Fig. 2, Fig. 3 and shown in Figure 4, the material of outer oiling ring 8 is a metal, outer oiling ring 8 with 7 contacted weeks of outer oil storage tank upwards evenly offer the slit, the width in slit and highly all are 0.1 ~ 0.5mm.
Corresponding, the material of interior oiling ring 16 is a metal, interior oiling ring 16 with 15 contacted weeks of interior oil storage tank upwards evenly offer the slit, the width in slit and highly all are 0.1 ~ 0.5mm.
Outer crystallizer and fuse top are the hot top of refractory material, and the height of interior hot top 11 and outer hot top 9 is 50 ~ 200mm, and hot top 9 sides are provided with the same level chute outside, realize the same level cast.Fuse is connected with outer crystallizer through support 10 and guarantees concentricity, is provided with grease channel and oil storage tank in outer crystallizer body 2 and the mandrel body 17, is the oiling ring of metal material between oil storage tank and the hot top, all slits of upwards evenly offering of oiling ring.Outer crystallizer bottom is provided with water jet, leaks the hidden danger that aluminium sets off an explosion for thoroughly eliminating hollow ingot near the fuse position, and the fuse bottom is sealed with plug, and inside is provided with coaxial water inlet pipe and outlet pipe, utilizes recirculated water cooling hollow ingot inner surface during casting.The height of outer crystallizer cooling wall 4 is 30 ~ 50mm, and the height of fuse cooling wall 18 is 30 ~ 100mm.
After cooling water gets into cooling water cavity,, flow to the hollow ingot outer surface from hole for water spraying 5 and cool off through undue water ring 3.Be provided with two outer grease channels 6 in the outer crystallizer body, lubricating oil is filled outer oil storage tank 7 through grease channel 6, and flows out via the slit of outer oiling ring 8, the outer crystallizer cooling wall 4 of oil lubrication.Cooling water is got into the water storage cavity of mandrel body 17 inside during casting by water inlet pipe 12; Discharge by coaxial outlet pipe 13 behind the cooling fuse; Be provided with two interior grease channels 14 and interior oil storage tank 15 thereof in the mandrel body 17, when casting process, lubricating oil is through fuse grease channel 14 and interior oil storage tank 15; Oiling wick cooling wall 18 is flowed out in slit through interior oiling ring 16.Fuse cooling wall 18 is big up and small down, has certain taper, in order to sizing and help the demoulding.The fuse that assembles is a composite entity, links to each other with outer crystallizer through support 10.
Fuse and outer crystallizer are assembled into one, connection grease channel and fueller, and with pulse mode to the crystallizer fuel feeding; Lubricating oil gets in the oil storage tank of outer crystallizer and fuse through passage respectively; After lubricating oil evenly flows out through the slit on the oiling ring, begin cast, aluminium alloy melt gets into the die cavity of being made up of outer crystallizer, fuse and dummy bar head through the same level chute, under the water-cooled effect, forms scull just;, hot top inner metal liquid position starts casting machine after reaching requirement; Dummy bar head moves down, and carries out the casting of aluminium alloy hollow ingot, and lubricating oil is lubricated the inside and outside surface of hollow ingot respectively with pulse mode in this process.
2A12 hollow ingot with preparation Φ 272mm * Φ 106mm is an example, begins cast when temperature reaches 710 ~ 750 ℃, and aluminium liquid gets into crystallizer through the same level chute; The water-cooled effect forms scull just down, after hot top inner metal liquid position highly reaches requirement 80mm, starts casting machine, and casting speed is 80 ~ 120mm/min; And with pulse mode to the crystallizer fuel feeding, the inside and outside surface to hollow ingot is lubricated respectively, lubricating oil pressure is 1 ~ 10kPa; Frequency is 1 ~ 20 time/min, finishes up to casting.
Utilize recirculated water cooling hollow ingot during casting, molten metal flows into crystallizer from the hot top lateral opening during casting, the cooling wall pulsed oil injecting lubricating of external crystallizer of difference and fuse in casting process.Significantly improve the inside and outside surface smoothness of hollow ingot, reduce the preceding peeling amount of follow-up plastic working.Crystallizer is established hot top hot top, helps the come-up that is mingled with in the aluminium alloy solution.Can a plurality of crystallizers be installed on the same casting platform and produce, production efficiency is high.The fuse bottom lock adopts the type of cooling cooling hollow ingot inner surface of recirculated water, the potential safety hazard of thoroughly avoiding aluminium leak to set off an explosion.
What need understand is: the above only is a preferred implementation of the present invention; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (6)
1. aluminium alloy hollow ingot D.C.casting crystallizer; Comprise water jacket (1), outer crystallizer body (2) and mandrel body (17); Water jacket (1) is connected with outer crystallizer body (2), it is characterized in that: be provided with branch water ring (3) in the cooling water cavity of water jacket (1), hole for water spraying (5) the outward crystallizer cooling wall (4) that connects with cooling water cavity; Be provided with outer grease channel (6) in the outer crystallizer body (2); Outer grease channel (6) one ends link to each other with fueller through fuel feed pump, and the other end is opened on outer oil storage tank (7), is pressed on outer oiling ring (8) the outward crystallizer cooling wall (4) on the outer oil storage tank (7); Be fixed with outer hot top (9) on the crystallizer body (2) outside, hot top (9) side is provided with the same level chute outside; Mandrel body (17) places the middle position of outer crystallizer body (2); The inside of mandrel body (17) is hollow structure, forms the water storage cavity, and its bottom is sealed by plug; Be provided with water inlet pipe (12) in the mandrel body (17); The inner chamber of water inlet pipe (12) is connected with the water storage cavity, and the inner chamber that forms between the outer outlet pipe (13) that is arranged with of water inlet pipe (12), the inwall of outlet pipe (13) and the outer wall of water inlet pipe (12) is connected with the water storage cavity; Be provided with interior grease channel (14) in the mandrel body (17); Interior grease channel (14) one ends link to each other with fueller through fuel feed pump; The other end is opened on interior oil storage tank (15); Be pressed on interior oiling ring (16) on the interior oil storage tank (15) towards fuse cooling wall (18), the big up and small down tapered configuration of fuse cooling wall (18) is fixed with interior hot top (11) on the mandrel body (17).
2. aluminium alloy hollow ingot D.C.casting crystallizer according to claim 1 is characterized in that: the height of hot top (11) and outer hot top (9) is 50 ~ 200mm in said.
3. aluminium alloy hollow ingot D.C.casting crystallizer according to claim 1, it is characterized in that: the height of said outer crystallizer cooling wall (4) is 30 ~ 50mm, the height of fuse cooling wall (18) is 30 ~ 100mm.
4. aluminium alloy hollow ingot D.C.casting crystallizer according to claim 1; It is characterized in that: the material of outer oiling ring (8) is a metal; Outer oiling ring (8) with contacted week of outer oil storage tank (7) upwards evenly offer the slit, the width in slit and highly all are 0.1 ~ 0.5mm.
5. aluminium alloy hollow ingot D.C.casting crystallizer according to claim 1; It is characterized in that: the material of interior oiling ring (16) is a metal; Interior oiling ring (16) with contacted week of interior oil storage tank (15) upwards evenly offer the slit, the width in slit and highly all are 0.1 ~ 0.5mm.
6. application rights requires 1 said crystallizer to realize aluminium alloy hollow ingot D.C.casting; It is characterized in that: the same level chute gets into crystallizer to aluminium liquid from outer hot top (9) side during casting; The water-cooled effect forms scull just down, after hot top inner metal liquid position highly reaches requirement, starts casting machine, and casting speed is 80 ~ 120mm/min; Cooling water gets into cooling water cavity after undue water ring (3) flow to the hollow ingot outer surface from hole for water spraying (5) cools off; Lubricating oil is filled outer oil storage tank (7) through grease channel (6), and flows out via the slit of outer oiling ring (8), the outer crystallizer cooling wall (4) of oil lubrication; Cooling water gets into the inner water storage cavity of mandrel body (17) by water inlet pipe (12); Discharge by coaxial outlet pipe (13) behind the cooling fuse; Lubricating oil flows out oil lubrication fuse cooling wall (18) through fuse grease channel (14) and interior oil storage tank (15) through the slit of interior oiling ring (16); Lubricating oil is lubricated the inside and outside surface of hollow ingot respectively with pulse mode, and lubricating oil pressure is 1 ~ 10kPa, and frequency is 1 ~ 20 time/min, finishes up to casting.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510152A (en) * | 2013-09-29 | 2014-01-15 | 哈尔滨工业大学 | Peritectic alloy-like analogue directional solidification crystallizer suitable for working under function of current |
| CN104358905A (en) * | 2014-10-08 | 2015-02-18 | 浙江天信仪表科技有限公司 | Automatic flow rate control device |
| CN106077541A (en) * | 2016-08-19 | 2016-11-09 | 中国重型机械研究院股份公司 | Magnesium alloy continuous casting crystallizer automatic fuelling device |
| CN106180607A (en) * | 2016-08-30 | 2016-12-07 | 中国重型机械研究院股份公司 | Magnesium alloy casts cooling and the inwall lubricating arrangement of liquid-solid converter continuously |
| CN111570738A (en) * | 2020-06-12 | 2020-08-25 | 包头常铝北方铝业有限责任公司 | Method for improving surface quality of 5-series aluminum alloy slab ingot |
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| CN103510152A (en) * | 2013-09-29 | 2014-01-15 | 哈尔滨工业大学 | Peritectic alloy-like analogue directional solidification crystallizer suitable for working under function of current |
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| CN106180607A (en) * | 2016-08-30 | 2016-12-07 | 中国重型机械研究院股份公司 | Magnesium alloy casts cooling and the inwall lubricating arrangement of liquid-solid converter continuously |
| CN106180607B (en) * | 2016-08-30 | 2019-10-15 | 中国重型机械研究院股份公司 | Magnesium alloy continuously casts cooling and the inner wall lubricating arrangement that liquid consolidates converter |
| CN111570738A (en) * | 2020-06-12 | 2020-08-25 | 包头常铝北方铝业有限责任公司 | Method for improving surface quality of 5-series aluminum alloy slab ingot |
| CN111570738B (en) * | 2020-06-12 | 2022-03-29 | 包头常铝北方铝业有限责任公司 | Method for improving surface quality of 5-series aluminum alloy slab ingot |
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Application publication date: 20121128 |