CN106216618A - A kind of pour into a mould the method that double metallic composite material is prepared in continuous casting - Google Patents
A kind of pour into a mould the method that double metallic composite material is prepared in continuous casting Download PDFInfo
- Publication number
- CN106216618A CN106216618A CN201610825650.9A CN201610825650A CN106216618A CN 106216618 A CN106216618 A CN 106216618A CN 201610825650 A CN201610825650 A CN 201610825650A CN 106216618 A CN106216618 A CN 106216618A
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- China
- Prior art keywords
- metal
- crystallizer
- continuous casting
- solid slurry
- flow guide
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Classifications
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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
- B22D11/007—Continuous casting of metals, i.e. casting in indefinite lengths of composite ingots, i.e. two or more molten metals of different compositions being used to integrally cast the ingots
-
- 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
- B22D11/14—Plants for continuous casting
- B22D11/141—Plants for continuous casting for vertical casting
Abstract
The invention provides and a kind of pour into a mould the method that double metallic composite material is prepared in continuous casting, including: a) melted metal enters crystallizer cooling, forms the solidification liquid cave of inverted cone under the effect of continuous casting dummy bar；B) in described solidification liquid cave, add metal semi-solid slurry by flow guide system, after solidification, obtain bimetallic composite ingot.Present invention also offers and a kind of pour into a mould continuous casting and prepare the equipment of double metallic composite material.The present invention forms the solidification liquid cave with certain depth first with the continuous Casting Principle of tradition, then in described solidification liquid cave, pour into metal semi-solid slurry by flow guide system and achieve the casting of dissimilar metal fluid covered composite yarn, in process of setting, interior metal semi solid slurry and outer layer metal melt carry out convective mass transfer in interface, and make the metal ecto-entad in crystallizer gradually solidify, thus obtain the double metallic composite material of the gradient transition between ectonexine metal with alloying component, microstructure of semisolid and arborescent structure.
Description
Technical field
The invention belongs to composition metal ingot casting processing technique field, particularly relate to the continuous casting of a kind of cast and prepare bimetallic
The method of composite.
Background technology
The research of double metallic composite material, the most over half a century history, although Gu its preparation method is from solid/multiple
Close, solid-liquid is combined, and is combined to liquid liquid, then to semisolid/solid union etc., has derived miscellaneous combination process, but
Essence only one of which: obtain continuous-stable, the combination interface of high intensity.The combination interface of continuous-stable and high intensity is for double gold
It is extremely important for belonging to the actual application of composite, before also preparing high-performance, multipurpose double metallic composite material
Carry and basis.
Metallurgical bonding interface is to make two kinds of metal materials combine closely by atom phase counterdiffusion, compares machinery
Combination interface, has the advantages such as bond strength height, good stability, impurity defect are few, it has also become prepared by double metallic composite material
Major interfaces binding mechanism.The solid complex technique of metallurgical bonding interface have solid/compound, solid-liquid is compound, liquid liquid is combined, solid-state/
Semi-solid bonding and semisolid/semi-solid bonding etc., they differ from one another in terms of the preparation of double metallic composite material.
Gu Gu/compound, solid-liquid compound, solid/semi-solid is compound etc. has solid metallic to participate in compound technique, because of needs
Fully erased have a strong impact on the oxide skin of solid metallic composite surface of Interface adhesive strength, greasy dirt, Slag inclusion etc., cause technique numerous
Trivial, technological requirement is high；Although and liquid liquid combination process does not exist the defect of above-mentioned technique, but its interface width is wayward, hold
Consolute phenomenon easily occurs, and these all will seriously hinder development and the application of double metallic composite material.
Owing to semi-solid metal slurry has certain solid rate, its viscosity relatively melted metal is high.When both meet
Time, low temperature and full-bodied semi solid slurry absorb melted metal release latent heat, reduce the viscosity of the latter, thus
Alleviate the severe degree that convection current and diffusion occur when both combine, and then reduce liquid metal atom to semi solid slurry expansion
The ability dissipated, provides Reliable guarantee for both regulation and control width of combination interface, stability.Therefore, if utilizing liquid liquid to be combined
Prepare technology and the equipment of double metallic composite material, rely on semi-solid metal slurry special performance, be expected to solve liquid liquid complex
Problems such as the interface bond strength differences that Gu the interface width become can not regulate and control and consolidate/be combined, solid-liquid is compounded to form, develop
" semisolid/liquid complex technique ", for obtaining metallurgical bonding interface one new approaches of offer of continuous-stable, high intensity, high-quality,
And be expected to develop and a series of there is semisolid non-dendritic tissue and arborescent structure distribution gradient high performance on interface
Double metallic composite material.
Solidification liquid cave is as an important component part of metal freezing theory, by extensive concern.In traditional hot top casting
During making, sump shape is once cooled down by crystallizer, cooling twice, casting speed, pouring temperature etc. are affected, and it is formed
Process is substantially: first molten metal directly contacts with crystallizer inwall, produces and once cools down, and forms just scull, molten metal
Heat pass to crystallizer by first scull, then taken away by the cooling water in crystallizer, made by the Quench of secondary cooling water
With, the rate of cooling in region, ingot casting surface is fast, temperature is low, and is limited by the heat-transfer rate of ingot casting own, region, ingot casting heart portion
Rate of cooling is slow, temperature is higher, and then is formed radially a higher thermograde at ingot casting, forms liquid cave.The present inventor examines
Consider, it is possible to use double metallic composite material is prepared in solidification liquid cave.
Summary of the invention
In view of this, it is an object of the invention to provide and a kind of pour into a mould continuous casting and prepare the side of double metallic composite material
Method, the present invention adds metal semi-solid slurry in the solidification liquid cave that casting is formed continuously by flow guide system and achieves xenogenesis gold
Belong to the casting of fluid covered composite yarn, it is possible to obtain and there is between ectonexine metal alloying component, microstructure of semisolid and arborescent structure
The double metallic composite material of gradient transition.
The invention provides and a kind of pour into a mould the method that double metallic composite material is prepared in continuous casting, including:
A) melted metal enters crystallizer cooling, forms the solidification liquid of inverted cone under the effect of continuous casting dummy bar
Cave；
B) in described solidification liquid cave, add metal semi-solid slurry by flow guide system, obtain bimetallic after solidification and be combined
Ingot casting；
Described metal bath and metal semi-solid slurry are selected from different metals.
Preferably, described step b) particularly as follows:
Flow guide system is used to clamp-on metal semi-solid slurry bottom described solidification liquid cave, downward dummy ingot while solidification,
The metal semi-solid slurry making flow guide system pour into is always positioned at the bottom in described solidification liquid cave.
Present invention also offers and a kind of pour into a mould continuous casting and prepare the equipment of double metallic composite material, including:
Crystallizer, is provided with continuous casting dummy bar in described crystallizer；
The outer casting ladle being connected with the melt inlet of described crystallizer, is contained with metal bath in described outer casting ladle；
The flow guide system communicated with described crystallizer；
The interior casting ladle communicated with described flow guide system, is contained with metal semi-solid slurry in described interior casting ladle；
Described metal semi-solid slurry can enter, by flow guide system, the solidification liquid cave that metal bath is formed in crystallizer
In.
The present invention forms the solidification liquid cave with certain depth first with the continuous Casting Principle of tradition, then passes through water conservancy diversion
System pours into metal semi-solid slurry in described solidification liquid cave and achieves the casting of dissimilar metal fluid covered composite yarn.Solidifying
Cheng Zhong, interior metal semi solid slurry and outer layer metal melt carry out convective mass transfer, and make the metal in crystallizer in interface
Ecto-entad gradually solidifies, thus obtains the ladder between ectonexine metal with alloying component, microstructure of semisolid and arborescent structure
Spend the double metallic composite material crossed.Meanwhile, the method that the present invention provides can slow down inner layer metal semi solid slurry and outer layer
Mutual convection current between metal bath and atoms permeating, thus obtain continuous-stable, non-scale or be mingled with, high-strength metallurgical knot
Close interface.
Accompanying drawing explanation
Fig. 1 is the structural representation of preparation facilities disclosed in the embodiment of the present invention.
Detailed description of the invention
The invention provides and a kind of pour into a mould continuous casting and prepare the equipment of double metallic composite material, including:
Crystallizer, is provided with continuous casting dummy bar in described crystallizer；
The outer casting ladle being connected with the melt inlet of described crystallizer, is contained with metal bath in described outer casting ladle；
The flow guide system communicated with described crystallizer；
The interior casting ladle communicated with described flow guide system, is contained with metal semi-solid slurry in described interior casting ladle；
Described metal semi-solid slurry can enter, by flow guide system, the solidification liquid cave that metal bath is formed in crystallizer
In.
Seeing the structural representation that Fig. 1, Fig. 1 are preparation facilitiess disclosed in the embodiment of the present invention, wherein, 1 is interior casting ladle, 2
Being flow guide system, 3 is outer casting ladle, and 4 is crystallizer, and 5 is double metallic composite material, 6 metal semi-solid slurries, and 7 is liquid metal
Melt, 8 is solidification liquid cave.
The present invention increases flow guide system on the basis of being traditionally used for the crystallizer cast continuously can realize bimetallic material
The preparation of material, device is simple, is conveniently easy to get, it is not necessary to significantly transform original device.
The device that the present invention provides includes crystallizer 4, is provided with continuous casting dummy bar (being not shown) in crystallizer 4.
The effect of crystallizer 4 is to be made melted metal therein solidify and formed have certain thickness shell by chilling, should
Shell is drawn downwards under the effect of continuous casting dummy bar, it is thus achieved that the solidification liquid cave 8 of inverted cone.
The device that the present invention provides also includes the outer casting ladle 3 being connected with the melt inlet of crystallizer 4, holds in outer casting ladle 3
There is melted metal 7, for being joined in crystallizer by melted metal 7.
The device that the present invention provides also includes the flow guide system 2 being connected with crystallizer 4, and one end of flow guide system 2 can be inserted
In the solidification liquid cave 8 formed in entering crystallizer 4.
The device that the present invention provides also includes the interior casting ladle 1 being connected with flow guide system 2, is contained with metal in interior casting ladle 1
Semi solid slurry 7, the metal semi-solid slurry 7 in interior casting ladle 1 enters in solidification liquid cave 8 by flow guide system 2, after solidification
To double metallic composite material 5.
Present invention also offers and a kind of pour into a mould the method that double metallic composite material is prepared in continuous casting, including:
A) melted metal enters crystallizer cooling, forms the solidification liquid of inverted cone under the effect of continuous casting dummy bar
Cave；
B) in described solidification liquid cave, add metal semi-solid slurry by flow guide system, obtain bimetallic after solidification and be combined
Ingot casting；
Described metal bath and metal semi-solid slurry are selected from different metals.
The present invention utilizes the said equipment to prepare double metallic composite material, first passes through outer casting ladle 3 and is sent by melted metal 7
Entering in crystallizer 4, crystallizer 4 chilling makes melted metal 7 formation have certain thickness shell, then at continuous casting ingot guide
This shell is made to form the solidification liquid cave 8 of inverted cone under the effect of bar；Then by flow guide system 2 by the metal in interior casting ladle 1 half
Solid size 6 imports in solidification liquid cave 8, and metal semi-solid slurry 6 and liquid metals melt 7 carry out convective mass transfer and formed certain
The metallurgical bonding interface 10 of width, controls metal semi-solid slurry 6 and the melted metal 7 setting time in crystallizer 4
Difference, promotes metal freezing ecto-entad order in crystallizer 4 to carry out, thus metallurgical bonding interface 10 realize alloying component, half
Solid-state microscopic structure 11 and the gradient transition of arborescent structure 9, see Fig. 1.
Further, flow guide system 2 imports metal semi-solid slurry 6 to the bottom in solidification liquid cave 8, while solidification downwards
Dummy ingot, the metal semi-solid slurry making flow guide system 2 pour into is always positioned at the bottom in described solidification liquid cave 8, thus prevents metal
Semi solid slurry 6 and metal bath 7 melt mutually.
The present invention is formed first with the continuous Casting Principle of tradition has certain thickness solidification liquid cave, then passes through water conservancy diversion
System pours into metal semi-solid slurry in described solidification liquid cave and achieves the casting of dissimilar metal fluid covered composite yarn.Solidifying
Cheng Zhong, interior metal semi solid slurry and outer layer metal melt carry out convective mass transfer, and make the metal ecto-entad in crystallizer
Gradually solidify, thus obtain the gradient transition between ectonexine metal with alloying component, microstructure of semisolid and arborescent structure
Double metallic composite material.Meanwhile, the method that the present invention provides can slow down inner layer metal semi solid slurry and outer layer metal melt
Between mutual convection current and atoms permeating, thus obtain continuous-stable, non-scale or be mingled with, high-strength metallurgical combination interface.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (3)
1. pour into a mould the method that double metallic composite material is prepared in continuous casting, including:
A) melted metal enters crystallizer cooling, forms the solidification liquid cave of inverted cone under the effect of continuous casting dummy bar；
B) in described solidification liquid cave, add metal semi-solid slurry by flow guide system, after solidification, obtain bimetallic composite casting
Ingot；
Described metal bath and metal semi-solid slurry are selected from different metals.
Method the most according to claim 1, it is characterised in that described step b) particularly as follows:
Using flow guide system to clamp-on metal semi-solid slurry bottom described solidification liquid cave, while solidification, downward dummy ingot, makes to lead
The metal semi-solid slurry that streaming system pours into is always positioned at the bottom in described solidification liquid cave.
3. pour into a mould continuous casting and prepare an equipment for double metallic composite material, including:
Crystallizer, is provided with continuous casting dummy bar in described crystallizer；
The outer casting ladle being connected with the melt inlet of described crystallizer, is contained with metal bath in described outer casting ladle；
The flow guide system communicated with described crystallizer；
The interior casting ladle communicated with described flow guide system, is contained with metal semi-solid slurry in described interior casting ladle；
Described metal semi-solid slurry can be entered in the solidification liquid cave that metal bath is formed in crystallizer by flow guide system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610825650.9A CN106216618A (en) | 2016-09-18 | 2016-09-18 | A kind of pour into a mould the method that double metallic composite material is prepared in continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610825650.9A CN106216618A (en) | 2016-09-18 | 2016-09-18 | A kind of pour into a mould the method that double metallic composite material is prepared in continuous casting |
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| Publication Number | Publication Date |
|---|---|
| CN106216618A true CN106216618A (en) | 2016-12-14 |
Family
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|---|---|---|---|
| CN201610825650.9A Pending CN106216618A (en) | 2016-09-18 | 2016-09-18 | A kind of pour into a mould the method that double metallic composite material is prepared in continuous casting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109663892A (en) * | 2019-03-01 | 2019-04-23 | 太原科技大学 | A kind of progressive coagulation forming device of large-scale casting ingot or slab |
| CN113165056A (en) * | 2018-10-26 | 2021-07-23 | 株式会社Posco | Casting apparatus and casting method |
Citations (9)
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|---|---|---|---|---|
| GB2042386A (en) * | 1979-02-26 | 1980-09-24 | Itt | Casting thixotropic metals |
| CN1174106A (en) * | 1997-04-15 | 1998-02-25 | 华南理工大学 | Continuous and semicontinuous method preparing gradient material |
| CN1373021A (en) * | 2001-02-28 | 2002-10-09 | 北京科技大学 | Apparatus and technology for one-step casting and continuously shaping wrapping material |
| CN1836800A (en) * | 2005-03-21 | 2006-09-27 | 孙恩波 | Continuous casting continuous rolling composite metal board and its production method |
| CN1927504A (en) * | 2006-09-04 | 2007-03-14 | 北京科技大学 | Coating material horizontal continuous casting direct recombination forming apparatus and technology |
| EP1872883A1 (en) * | 2003-06-24 | 2008-01-02 | Novelis Inc. | Method for casting composite lingot |
| CN101279521A (en) * | 2008-05-07 | 2008-10-08 | 华南理工大学 | Laminar compound aluminium alloy material with high intensity and preparation thereof |
| US20080254309A1 (en) * | 2007-04-11 | 2008-10-16 | Alcoa Inc. | Functionally Graded Metal Matrix Composite Sheet |
| CN105834406A (en) * | 2016-06-08 | 2016-08-10 | 华北理工大学 | Extrusion forming device for composite casting of semi-solid metal slurry and liquid metal melt |
-
2016
- 2016-09-18 CN CN201610825650.9A patent/CN106216618A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2042386A (en) * | 1979-02-26 | 1980-09-24 | Itt | Casting thixotropic metals |
| CN1174106A (en) * | 1997-04-15 | 1998-02-25 | 华南理工大学 | Continuous and semicontinuous method preparing gradient material |
| CN1373021A (en) * | 2001-02-28 | 2002-10-09 | 北京科技大学 | Apparatus and technology for one-step casting and continuously shaping wrapping material |
| EP1872883A1 (en) * | 2003-06-24 | 2008-01-02 | Novelis Inc. | Method for casting composite lingot |
| CN1836800A (en) * | 2005-03-21 | 2006-09-27 | 孙恩波 | Continuous casting continuous rolling composite metal board and its production method |
| CN1927504A (en) * | 2006-09-04 | 2007-03-14 | 北京科技大学 | Coating material horizontal continuous casting direct recombination forming apparatus and technology |
| US20080254309A1 (en) * | 2007-04-11 | 2008-10-16 | Alcoa Inc. | Functionally Graded Metal Matrix Composite Sheet |
| CN101279521A (en) * | 2008-05-07 | 2008-10-08 | 华南理工大学 | Laminar compound aluminium alloy material with high intensity and preparation thereof |
| CN105834406A (en) * | 2016-06-08 | 2016-08-10 | 华北理工大学 | Extrusion forming device for composite casting of semi-solid metal slurry and liquid metal melt |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113165056A (en) * | 2018-10-26 | 2021-07-23 | 株式会社Posco | Casting apparatus and casting method |
| CN109663892A (en) * | 2019-03-01 | 2019-04-23 | 太原科技大学 | A kind of progressive coagulation forming device of large-scale casting ingot or slab |
| CN109663892B (en) * | 2019-03-01 | 2023-08-15 | 太原科技大学 | Progressive solidification forming device for large cast ingot or casting blank |
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Application publication date: 20161214 |
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