CN106270430A - The semi-continuous casting method of aluminum based composite material enhanced by granules in situ - Google Patents
The semi-continuous casting method of aluminum based composite material enhanced by granules in situ Download PDFInfo
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- CN106270430A CN106270430A CN201610727054.7A CN201610727054A CN106270430A CN 106270430 A CN106270430 A CN 106270430A CN 201610727054 A CN201610727054 A CN 201610727054A CN 106270430 A CN106270430 A CN 106270430A
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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
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/003—Aluminium alloys
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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
- B22D11/049—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for direct chill casting, e.g. electromagnetic casting
-
- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Continuous Casting (AREA)
Abstract
The present invention relates to the semi-continuous casting method of the aluminum based composite material enhanced by granules in situ of a kind of composite formed technical field, comprise the following steps: take in-situ ceramic particle enhanced aluminum-based composite material, fusing, insulation, obtain Composite Melt；Composite Melt is injected in crystallizer, carry out supersound process simultaneously；After melt solidifies at graphite annulus, dummy bar head declines, and opens cooling water simultaneously and cools down casting rod；When dummy bar head drops to Wiper blade position, Wiper blade starts to contact with casting rod surface, is scraped off from casting rod surface by cooling water；Along with dummy bar head declines, casting rod slowly enters in heating furnace and anneals；Casting completes, casting rod of slinging, and obtains the semicontinuous casting rod of aluminum matrix composite.The square law device of the present invention is simple, easy and simple to handle, can prepare that crystal grain is tiny, the large scale aluminum based composite material enhanced by granules in situ ingot casting of even particle distribution, is suitable to the large-scale industrial production of aluminum matrix composite, has good practical application and be worth.
Description
Technical field
The present invention relates to composite formed technical field, specifically, be that a kind of in-situ particle strengthens aluminum-base composite material
The semi-continuous casting method of material.
Background technology
Aluminum matrix composite has high specific strength, high ratio modulus and high specific stiffness, leads in Aero-Space, national defence, industry etc.
Territory has a wide range of applications.Particle enhanced aluminum-based composite material, according to the difference of processing technique, is divided into granule to strengthen cast aluminum base
Composite and granule strengthen deformation aluminum matrix composite.The deformation intensity of aluminum matrix composite and elongation percentage etc. will be apparently higher than
Cast aluminum base composite material.The preparation technology of deformation aluminum matrix composite is to first pass through casting to obtain composite ingot casting, so
After through Plastic Forming processing obtain composite material section bar, forging etc..The casting forming process of early stage ingot blank determines ingot blank
Quality, following process and final performance on composite can produce important impact.Therefore aluminum matrix composite ingot casting shapes
It it is the basis of deformation aluminum matrix composite " control shape control ".
Finding by prior art documents, the Chinese patent of Publication No. CN1727505, publication date is 2006
February 1, patent invention entitled: the preparation method of aluminum based composite material enhanced by granules in situ.This patent is to use KBF4、
K2TiF6Aluminum based composite material enhanced by granules in situ is prepared, by aluminum based composite material enhanced by granules in situ in this patent with reactive aluminum
Melt cast obtains aluminum matrix composite ingot casting in mold, is limited by mold size and mold cooling capacity, it is difficult to
Preparing that crystal grain is tiny, the large scale ingot casting of even particle distribution, the technical scheme that this patent application discloses is difficult in extensive work
Popularization and application in industry metaplasia product.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of in-situ particle strengthens aluminum-base composite
The semi-continuous casting method of material.The advantages such as it is simple that the method for the present invention has device, easy and simple to handle, can prepare crystal grain tiny,
The large scale aluminum based composite material enhanced by granules in situ ingot casting of even particle distribution, is suitable to the large-scale industry of aluminum matrix composite
Metaplasia is produced, and has good practical application and is worth.
It is an object of the invention to provide the semi-continuous casting method of a kind of aluminum based composite material enhanced by granules in situ, including
Following steps:
Step one, takes in-situ ceramic particle enhanced aluminum-based composite material, fusing, and insulation obtains Composite Melt；
Step 2, injects Composite Melt in crystallizer, carries out supersound process simultaneously；
Step 3, after melt solidifies at graphite annulus, dummy bar head declines, and opens cooling water simultaneously and carries out cold to casting rod
But；
Step 4, when dummy bar head drops to Wiper blade position, Wiper blade starts to contact with casting rod surface, will cooling water from
Casting rod surface scrapes off；
Step 5, along with dummy bar head declines, casting rod slowly enters in heating furnace and anneals；
Step 6, casting completes, casting rod of slinging, and obtains the semicontinuous casting rod of aluminum matrix composite.
Preferably, it is characterized in that, in step one, described insulation is to be incubated at 720-850 DEG C.
Preferably, in step 2, the frequency of described supersound process is 13-23kHz.
Preferably, in step 2, the power of described supersound process is 0.5-1.5kW.
Preferably, in step 3, the speed that described dummy bar head declines is 20-60mm per minute.
Preferably, the semi-continuous casting method of aluminum based composite material enhanced by granules in situ according to claim 1, its
Feature is, in step 4, described Wiper blade is positioned at 15-35mm below graphite annulus.
Preferably, the semi-continuous casting method of aluminum based composite material enhanced by granules in situ according to claim 1, its
Feature is, in step 4, the pressure of described cooling water is 0.1-0.3MPa.
Preferably, the semi-continuous casting method of aluminum based composite material enhanced by granules in situ according to claim 1, its
Feature is, in step 4, the water temperature of described cooling water is 20-40 DEG C.
Preferably, the semi-continuous casting method of aluminum based composite material enhanced by granules in situ according to claim 1, its
Feature is, in step 5, the temperature of described heating furnace is 350-450 DEG C.
Compared with prior art, the present invention has following beneficial effect: the method for the present invention is by melting composite
Body carries out supersound process, makes in-situ particle distribution in the melt more uniform, and the crystal grain to matrix also functions to refinement work simultaneously
With.Graphite annulus cooling is combined with water-cooled, it is ensured that composite crystal grain is tiny.Use Wiper blade to be scraped off by cooling water, have
Help reduce surface and internal thermograde, reduce thermal stress, it is to avoid ingot casting ftractures.Heating furnace is placed below crystallizer,
In time casting rod can be annealed, reduce casting stress.The semicontinuous ingot casting preparation method device of the present invention is simple, be prone to control
System, efficiency are high, can realize that crystal grain is tiny, the large scale aluminum matrix composite ingot casting of even particle distribution, become for follow-up plasticity
Shape provides the ingot blank of stable performance.
Accompanying drawing explanation
By the detailed description non-limiting example made with reference to the following drawings of reading, the further feature of the present invention,
Purpose and advantage will become more apparent upon:
Fig. 1 is the structural representation that in the embodiment of the present invention, semi-continuous casting method uses device；
In figure, 1 is ultrasonic processor, and 2 is Composite Melt, and 3 is refractory material, and 4 is crystallizer, and 5 is graphite annulus, 6
For cooling water, 7 is Wiper blade, and 8 is composite casting rod, and 9 is heating furnace, and 10 is dummy bar head.
Fig. 2 is, the SEM photograph figure of casting rod prepared by the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in the technology of this area
Personnel are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into the present invention
Protection domain.
Embodiment 1
The present embodiment relates to the semi-continuous casting method of a kind of aluminum based composite material enhanced by granules in situ, specifically makes
The 5%TiB of standby a diameter of 250mm2/ 7075 aluminum based composite material enhanced by granules in situ casting rods.
The apparatus structure schematic diagram that the method for the present embodiment is is as it is shown in figure 1, in figure, 1 is ultrasonic processor, and 2 is multiple
Condensation material melt, 3 is refractory material, and 4 is crystallizer, and 5 is graphite annulus, and 6 is cooling water, and 7 is Wiper blade, and 8 cast for composite
Rod, 9 is heating furnace, and 10 is dummy bar head.The method using described device to carry out semi-continuous casting comprises the steps:
By 5%TiB2/ 7075 aluminum based composite material enhanced by granules in situ fusings, 720 DEG C of insulations；
Composite Melt 2 is injected in crystallizer 4, starts simultaneously at and carry out supersound process, supersonic frequency with ultrasonic processor 1
Rate 13kHz, power 0.5kW；Described crystallizer 4 is internally provided with refractory material 3；
After Composite Melt 2 solidifies crust at graphite annulus 5, dummy bar head 10 declines with 20mm/min speed, simultaneously
Opening cooling water 6, cool down casting rod 8, coolant water temperature 20 DEG C, hydraulic pressure is 0.1MPa；
Wiper blade 7 starts at 15mm to contact with casting rod 8 surface below graphite annulus, is scraped off from casting rod surface by cooling water；
Dummy bar head continues to decline, and casting rod slowly enters in heating furnace 9, and furnace temp is 350 DEG C；
After having cast, casting rod of slinging, obtain the 5%TiB of diameter 150mm2/ 7075 semicontinuous castings of aluminum matrix composite
Rod.
Embodiment 2
The present embodiment relates to the semi-continuous casting method of a kind of aluminum based composite material enhanced by granules in situ, specifically makes
The 8%TiB of standby diameter 450mm2/ 7050 aluminum based composite material enhanced by granules in situ casting rods.
The method of the present embodiment comprises the steps:
By 5%TiB2/ 7075 aluminum based composite material enhanced by granules in situ fusings, 785 DEG C of insulations；
Composite Melt is injected in crystallizer, start simultaneously at supersound process, supersonic frequency 18kHz；Power 1kW；
After melt solidifies crust at graphite annulus, dummy bar head declines with 40mm/min speed, opens cooling water simultaneously, right
Casting rod cools down, coolant water temperature 32 DEG C, and hydraulic pressure is 0.2MPa；
Wiper blade starts at 25mm to contact with casting rod surface below graphite annulus, is scraped off from casting rod surface by cooling water；
Dummy bar head continues to decline, and casting rod slowly enters in heating furnace, and furnace temp is 400 DEG C；
After having cast, casting rod of slinging, obtain the 8%TiB of diameter 350mm2/ 7050 semicontinuous castings of aluminum matrix composite
Rod.
Embodiment 3
The present embodiment relates to the semi-continuous casting method of a kind of aluminum based composite material enhanced by granules in situ, specifically makes
The 10%TiB of standby diameter 800mm2/ 7055 aluminum based composite material enhanced by granules in situ casting rods.
The method of the present embodiment comprises the steps:
By 10%TiB2/ 7055 aluminum based composite material enhanced by granules in situ fusings, 850 DEG C of insulations；
Composite Melt is injected in crystallizer, start simultaneously at supersound process, supersonic frequency 23kHz, power 1.5kW；
After melt solidifies crust at graphite annulus, dummy bar head declines with 60mm/min speed, opens cooling water simultaneously, right
Casting rod cools down, coolant water temperature 40 DEG C, and hydraulic pressure is 0.3MPa；
Wiper blade starts at 35mm to contact with casting rod surface below graphite annulus, is scraped off from casting rod surface by cooling water；
Dummy bar head continues to decline, and casting rod slowly enters in heating furnace, and furnace temp is 450 DEG C, after having cast, slings
Casting rod, obtains the 10%TiB of diameter 600mm2/ 7055 semicontinuous casting rods of aluminum matrix composite.
In sum, the semicontinuous ingot casting preparation method device of the present invention is simple, easily controllable, efficiency is high, can realize crystalline substance
Tiny, the large scale aluminum matrix composite ingot casting of even particle distribution of grain, provides stable performance for follow-up Plastic Forming
Ingot blank.The method of the present invention, by Composite Melt is carried out supersound process, makes in-situ particle distribution in the melt more
Uniformly, the crystal grain of matrix is also functioned to refining effect simultaneously.Graphite annulus cooling is combined with water-cooled, it is ensured that composite is brilliant
Grain is tiny.Use Wiper blade to be scraped off by cooling water, contribute to reducing surface and internal thermograde, reduce thermal stress, it is to avoid
Ingot casting ftractures.Below crystallizer, place heating furnace, it is possible in time casting rod is annealed, reduce casting stress.The present invention's
Semicontinuous ingot casting preparation method device is simple, easily controllable, efficiency is high, can realize that crystal grain is tiny, the big chi of even particle distribution
Very little aluminum matrix composite ingot casting, casting rod SEM photograph is as shown in Figure 2, it is possible to provide stable performance for follow-up Plastic Forming
Ingot blank.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformation or amendment within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (9)
1. the semi-continuous casting method of an aluminum based composite material enhanced by granules in situ, it is characterised in that comprise the following steps:
Step one, takes in-situ ceramic particle enhanced aluminum-based composite material, fusing, and insulation obtains Composite Melt；
Step 2, injects Composite Melt in crystallizer, carries out supersound process simultaneously；
Step 3, after melt solidifies at graphite annulus, dummy bar head declines, and opens cooling water simultaneously and cools down casting rod；
Step 4, when dummy bar head drops to Wiper blade position, Wiper blade starts to contact with casting rod surface, will cool down water from casting rod
Surface scrapes off；
Step 5, along with dummy bar head declines, casting rod slowly enters in heating furnace and anneals；
Step 6, casting completes, casting rod of slinging, and obtains the semicontinuous casting rod of aluminum matrix composite.
The semi-continuous casting method of aluminum based composite material enhanced by granules in situ the most according to claim 1, is characterized in that, step
In rapid one, described insulation is to be incubated at 720-850 DEG C.
The semi-continuous casting method of aluminum based composite material enhanced by granules in situ the most according to claim 1, is characterized in that, step
In rapid two, the frequency of described supersound process is 13-23kHz.
The semi-continuous casting method of aluminum based composite material enhanced by granules in situ the most according to claim 1, is characterized in that, step
In rapid two, the power of described supersound process is 0.5-1.5kW.
The semi-continuous casting method of aluminum based composite material enhanced by granules in situ the most according to claim 1, is characterized in that, step
In rapid three, the speed that described dummy bar head declines is 20-60mm per minute.
The semi-continuous casting method of aluminum based composite material enhanced by granules in situ the most according to claim 1, is characterized in that, step
In rapid four, described Wiper blade is positioned at 15-35mm below graphite annulus.
The semi-continuous casting method of aluminum based composite material enhanced by granules in situ the most according to claim 1, is characterized in that, step
In rapid four, the pressure of described cooling water is 0.1-0.3MPa.
The semi-continuous casting method of aluminum based composite material enhanced by granules in situ the most according to claim 1, is characterized in that, step
In rapid four, the water temperature of described cooling water is 20-40 DEG C.
The semi-continuous casting method of aluminum based composite material enhanced by granules in situ the most according to claim 1, is characterized in that, step
In rapid five, the temperature of described heating furnace is 350-450 DEG C.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470574A (en) * | 2017-08-15 | 2017-12-15 | 东北大学 | The high speed semi-continuous casting device and method of a kind of aluminium alloy cast ingot |
| CN109014098A (en) * | 2018-08-29 | 2018-12-18 | 昆明理工大学 | A kind of the continuous casting forming device and method of ceramic particle reinforced metal base composites |
| CN110004333A (en) * | 2019-01-28 | 2019-07-12 | 中信戴卡股份有限公司 | A method of improving aluminum matrix composite enhances particle dispersing uniformity |
| CN110315041A (en) * | 2019-08-06 | 2019-10-11 | 中南大学 | A kind of method that multi-source ultrasonic wave auxiliary D.C.casting prepares big specification 7XXX line aluminium alloy billet |
| CN112808955A (en) * | 2020-12-31 | 2021-05-18 | 湖南文昌新材科技股份有限公司 | Casting crystallizer of high-silicon aluminum alloy semi-solid casting rod and preparation method thereof |
| CN113061772A (en) * | 2021-03-24 | 2021-07-02 | 合肥工业大学 | Semi-continuous preparation method of particle reinforced composite material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470574A (en) * | 2017-08-15 | 2017-12-15 | 东北大学 | The high speed semi-continuous casting device and method of a kind of aluminium alloy cast ingot |
| CN107470574B (en) * | 2017-08-15 | 2019-04-23 | 东北大学 | A kind of the high speed semi-continuous casting device and method of aluminium alloy cast ingot |
| CN109014098A (en) * | 2018-08-29 | 2018-12-18 | 昆明理工大学 | A kind of the continuous casting forming device and method of ceramic particle reinforced metal base composites |
| CN109014098B (en) * | 2018-08-29 | 2020-11-17 | 昆明理工大学 | Continuous casting forming device and method for ceramic particle reinforced metal matrix composite |
| CN110004333A (en) * | 2019-01-28 | 2019-07-12 | 中信戴卡股份有限公司 | A method of improving aluminum matrix composite enhances particle dispersing uniformity |
| CN110315041A (en) * | 2019-08-06 | 2019-10-11 | 中南大学 | A kind of method that multi-source ultrasonic wave auxiliary D.C.casting prepares big specification 7XXX line aluminium alloy billet |
| CN112808955A (en) * | 2020-12-31 | 2021-05-18 | 湖南文昌新材科技股份有限公司 | Casting crystallizer of high-silicon aluminum alloy semi-solid casting rod and preparation method thereof |
| CN112808955B (en) * | 2020-12-31 | 2021-10-22 | 湖南文昌新材科技股份有限公司 | Casting crystallizer of high-silicon aluminum alloy semi-solid casting rod and preparation method thereof |
| CN113061772A (en) * | 2021-03-24 | 2021-07-02 | 合肥工业大学 | Semi-continuous preparation method of particle reinforced composite material |
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Effective date of registration: 20181123 Address after: 235000 Weilong Road, Longhu High-tech Zone, Huaibei Economic Development Zone, Anhui Province Applicant after: Anhui Ceramic Aluminum New Materials Research Institute Co., Ltd. Address before: 201108 room 2, 6 building, 4299 Jin Du Road, Minhang District, Shanghai, C8 Applicant before: Shanghai Jiaotong University Intellectual Property Management Co., Ltd. Applicant before: Wang Haowei |
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