CN1060978C - Metal-base composite horizontal continuous casting method and equipment - Google Patents
Metal-base composite horizontal continuous casting method and equipment Download PDFInfo
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- CN1060978C CN1060978C CN95113800A CN95113800A CN1060978C CN 1060978 C CN1060978 C CN 1060978C CN 95113800 A CN95113800 A CN 95113800A CN 95113800 A CN95113800 A CN 95113800A CN 1060978 C CN1060978 C CN 1060978C
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Abstract
The present invention relates to a method and equipment for preparing a new particle enhanced metal-base (mainly Al-base, Mg-base, Cu-base and Zn-base) composite material by horizontal continuous casting. Due to the arrangement of a magnetic stirrer 3, a crystallizer 4, a middle heat-insulating bag 9, etc., reinforcing substances uniformly suspend in an alloy liquid. The metal-base composite material produced by the method and the equipment of the present invention has the advantages of uniform and compact tissue and greatly enhanced comprehensive property. The method and the equipment are suitable for industrialized production. The metal-base composite material of profiles, such as sticks, ingots, etc., prepared by the method and the equipment can be secondarily processed and can be widely used for manufacturing key parts in the industries of automobiles, aviation, weapons, etc.
Description
The invention belongs to field of metallurgy, specifically is the method and apparatus of metal-base composite horizontal continuous casting.
Because particles reiforced metal-base composition has high specific strength, the high heat-resisting low-thermal-expansion of high ratio modulus (rigidity), preparation technology is simple relatively, advantages such as reinforce raw material and matrices of composite material material price are cheap, can be widely used on the parts of auto industry, weapons and aircraft industry, as piston, connecting rod, automobile rocking arm, brake disc, creeper tread etc.Near during the last ten years to its research and development in the west, the former Soviet Union and China all extremely payes attention to, western countries adopt PM technique and various foundry engieering to prepare metal-base composites mostly.It is higher to prepare reinforce (whisker, short fiber, particle) volume fraction with PM technique, the enhancing metal-base composites that reinforce is evenly distributed, but this method complex process, technical difficulty is big, production efficiency is low, production cost is high.It is lower to utilize foundry engieering to prepare the metal-base composites cost, but also there is shortcoming, relatively poor as reinforce and matrix alloy wetability, influence combining of reinforce and matrix, in addition, sedimentation can take place in the composite wood feed liquid that mixes when solidifying, cause reinforce poly-partially, influences microstructure of composite uniformity and serviceability.Some technology is not suitable for mass production.
The CN1093628A invention disclosed is " electromagnetic stirring casting technology of metal-base composites ", this is to have increased electromagnetic agitation technology in the casting process of material, but it is to weave into prefabricated component with continuous fiber according to shape, put into casting mold, then molten metal is poured into non magnetic casting mold, it can not realize continuous casting, can not prepare the particles reiforced metal-base composition section bar, need dispose the large power, electrically magnetic machine and exist the solid-liquid two-phase region stirring technique to control problems such as difficulty for large-scale workpiece.CN1104568A disclosed " a kind of manufacture method of non-continuous reinforced aluminium-based composite material " adopts two-stage pressurization extrusion casting method.Use the investment of the required extrusion equipment of this method big, the mould consumption is also big, moreover this method is only suitable, and to manufacture size less, and the specific product of simple shape is not suitable for producing in batches the raw material of composite as rod, ingot, plate, pipe, base etc.Europe once had about utilizing the report of electromagnetic agitation (EP0437153) metal-base composites.But should invention adopt the continuous vertical casting method, its equipment limits prepared continuous casting composite limited length owing to vertical direction is subjected to melt pit, in addition, and the trailer system complexity that it is required, equipment precision prescribed height.Vives Ch (Mater SciEng.A173 (1-2:239)) has reported the technology of utilizing electromagnetism rheology (thixotroping) continuous vertical casting, and the alloy temperature of this technology is in half curdled appearance, belongs to the semisolid continuous vertical casting.
Horizontal continuous casting apparatus is simpler, can realize that continuous casting and rolling or continuous casting add extrusion process.Continuous casting is to improving the alloy cast ingot quality, refinement and even microscopic structure effect are fairly obvious, but the continuous casting technology is applied to prepare discontinuous enhancing metal-base composites, be particles reiforced metal-base composition, especially the alloy liquid that contains a certain amount of particle reinforce carried out the horizontal continuous-casting metal-base composites and still be not reported.
The object of the invention provides the horizontal continuous-casting method and the equipment of section bars such as a kind of particles reiforced metal-base composition rod of preparing dense structure's excellent combination property, ingot, pipe, plate, base.
Design of the present invention is the preparation that the continuous casting technology is used for particle enhanced aluminum-based composite material after improving, and starts with from solving institutional framework, from the industrialness and the premium properties of equipment and method two aspect guarantee fund's metal-matrix composite materials.
Describe below in conjunction with accompanying drawing.
The continuous casting particulate reinforced metal matrix composite, it solidifies feature and segregation and is inclined to all different with matrix alloy because of the alloy liquid that contains the reinforce particle, thereby require continuous casting process different with common alloy continuous casting with equipment, the present invention has added magnetic stirrer in horizontal continuous-casting, the enhancing uniform particles is suspended in the alloy liquid, avoided the sedimentation of particle, and insulation bag (9) and horizontal crystallizer (4) in the middle of reasonably being provided with.
Realization of the present invention be among the present invention horizontal continuous casting apparatus as shown in Figure 1, has the smelting furnace 1 that has mechanical agitation mechanism, middle insulation bag (abbreviation tundish) 9, magnetic stirrer, horizontal crystallizer 4 etc., mechanical agitation mechanism is arranged at the top of smelting furnace 1, insulation was wrapped within 9 in the middle of magnetic stirrer was nested in, middle insulation bag 9 is up big and down small, and it is suitable for reading to be connected with smelting furnace 1 by chute, goes out head piece and horizontal crystallizer 4 smoothly joins.Horizontal crystallizer 4 has endoporus, interior cover, cavity, water distributing plate 8, overcoat, interior cover is made by good heat conducting material, cavity is between interior overcoat, in establish water distributing plate 8, interior hole shape can be circle, annular, flat, the preparation with the particles reiforced metal-base composition that adapts to rod, pipe, plate, base such as trapezoidal, square.The length of horizontal crystallizer 4 changes because of the metal-base composites composition of institute's continuous casting is different with kind, as changing between 10～200mm.
Realization of the present invention is that also the magnetic stirrer in the metal-base composite horizontal continuous casting equipment is the rare earth permanent magnet agitator, sees Fig. 2, and some magnetic poles 10 radially evenly distribute.Because the setting of magnetic stirrer, when the particle reinforce when entering horizontal crystallizer 4 earlier through a rotary permanent-magnet field, regulating magnetic field intensity can make the particle reinforce keep suspending and motion state in matrix alloy liquid, and make solid liquid interface 5 become straight, thereby improved the reinforce distributing homogeneity, refinement the metal-base composites tissue, increased substantially the combination property of metal-base composites.
The said particles reiforced metal-base composition horizontal continuous casting method of the present invention be with metal-base composites mixed liquor 2 when its temperature is higher than the liquidus temperature of matrix alloy, pour in the tundish 9, the liquid level of composite is 100～200mm in the control tundish 9, pouring temperature is higher than 50～150 ℃ of the liquidus temperatures of matrix alloy, the metal-base composites mixed liquor enters before the crystallizer 4, stirred by agitator, the horizontal crystallizer of flowing through, after the secondary cooling, enter in haulage gear and the carry-over pinch rolls 6, go out machine with roller and become a useful person continuously, see the bar 7 among Fig. 1, above step is continuously carries out.
Continuous casting is exactly an insulation bag 9 in the middle of metal or alloy liquid is poured into continuously, then enter with crystallizer that tundish is connected in, the direct chilling action of indirect cooling by the cooling fluid in the horizontal crystallizer 4 (normally water) and the cooling fluid that from crystallizer, ejects, make alloy liquid be rapidly solidificated into composite stick 7, or plate, base, section bars such as tubing.Because metal-base composites mixed liquor 2 is before entering crystallizer, be subjected to the abundant stirring of mechanical agitation mechanism and magnetic stirrer, made to strengthen even particle distribution, improved institutional framework effectively, thereby obtained dense structure, the novel metal based composites of high comprehensive performance.
Realization of the present invention also is the metal-base composites mixed liquor 2 mentioned in the metal-base composite horizontal continuous casting method, can by having as shown in Figure 1 liquid mechanical agitation mechanism smelting furnace 1 provide, also can provide by the particles reiforced metal-base composition liquation that eddy-current heating remelting or resistance heated remelting provide.Concrete is is the matrix alloy of the discontinuous particle reinforce adding molten state of 5～150 μ m with particle diameter, in aluminium (Al), magnesium (Mg), copper (Cu), zinc (Zn) alloy, account for 5～25%Vol, get, also can get by remelting composite ingot casting through fully mixing stirring.The particle reinforce comprises SiC, Al
2O
3, B
4C, TiB
2, SiO
2, TiC and metal oxide thereof, nonmetal oxide, carbide, nitride, boride etc.
The present invention also can be used for the horizontal continuous-casting of matrix alloy, and can obtain high-performance matrix alloy section bar.
Because will stirring with continuous casting, the present invention organically combines, the horizontal continuous-casting method that will be used for matrix alloy is improved upgrades the preparation of introducing the particles reiforced metal-base composition section bar, reasonably be provided with magnetic stirrer, horizontal crystallizer 4 and middle insulation bag 9 and make the particle reinforce in the composite wood feed liquid, evenly suspend, and under this state, enter progressively cooling.So method and apparatus of the present invention can obtain section bars such as high-quality particles reiforced metal-base composition rod, ingot, plate, and equipment is simple, is suitable for mass industrialized production.
Fig. 1 is a horizontal continuous-casting equipment component schematic diagram of the present invention.
Fig. 2 is permanent magnetic stirrer schematic diagram among the present invention.
1-smelting furnace 2-composite mixed liquor 3-magnetic stirrer
The horizontal crystallizer 5-of 4-solid liquid interface 6-carry-over pinch rolls
Insulation bag in the middle of the 7-composite stick 8-water distributing plate 9-
The 10-magnetic pole
Embodiment 1
ZL 101 alloy contains 680～760 ℃ of the composite XGF10-1 pouring temperatures of 10%VolSiC particle (10 μ m), drawing velocity 50～500mm/min, cooling water pressure 0.01～0.05Mpa, becoming diameter through horizontal continuous-casting under above-mentioned process conditions is the aluminum matrix composite bar of 50mm, any surface finish.Metallographic structure is observed, dendrite interval is than common metal type or adopt 10 times of the XGF-10-1 composite refinements of sand casting, the SiC even particle distribution, the microstructure of composite densification, and under ordinary casting condition, occur large stretch of no SiC granulomere in this composite easily, and occur gas hole defect in the material easily.
To after the cutting of the XGF10-1 of horizontal casting of the present invention rod epidermis, be processed into standard tensile performance sample, through solid solution aging T
6Handle, recording mechanical property is σ
b=335Mpa, σ
0.2=300Mpa, E=82Gpa, δ %=3.5%.
Embodiment 2
Adopt the technological level continuous casting close with embodiment 1 diameter be the ZL 109 alloy composite bar that contains 10Vol%SiC particle (10 μ m) of φ 50mm.Continuous casting drawing velocity 100～500mm/min, continuous casting bar metallographic observation SiC even particle distribution, eutectic Si is tiny, T
6Handle the back room-temperature mechanical property and reach σ
b=345MPa, σ
0.2=305MPa, δ %=3.2%, E=85GPa.
Claims (4)
1. metal-base composite horizontal continuous casting equipment, has the smelting furnace (1) that has mechanical agitation mechanism, middle insulation bag (9), horizontal crystallizer (4) etc., middle insulation bag (9) is up big and down small, suitable for readingly is connected with the smelting furnace (1) that has liquid mechanical agitation mechanism by chute, it is characterized in that this horizontal continuous casting equipment also is provided with magnetic stirrer (3), within the insulation bag (9), tundish (9) goes out head piece and horizontal crystallizer (4) smoothly joins in the middle of magnetic stirrer (3) was nested in.
2. metal-base composite horizontal continuous casting equipment according to claim 1 is characterized in that magnetic stirrer (3) is the rare earth permanent magnet agitator, and some magnetic poles (10) radially evenly distribute.
3. metal-base composite horizontal continuous casting method, step is with metal-base composites mixed liquor (2), pour in the tundish (9), metal-base composites mixed liquor (2), when flowing through horizontal crystallizer (4), after the secondary cooling, enter in haulage gear and the carry-over pinch rolls (6), going out machine with roller becomes a useful person, it is characterized in that pouring temperature is higher 50～150 ℃ than the liquidus temperature of matrix alloy, metal-base composites mixed liquor (2) is entering the preceding abundant stirring that has been subjected to mechanical agitation mechanism and magnetic stirrer of crystallizer (4).
4. metal-base composite horizontal continuous casting method according to claim 3, it is characterized in that metal-base composites mixed liquor (2) is is that the discontinuous particle reinforce of 5～150um adds in the metal alloy of molten state such as aluminium, magnesium, copper, the kirsite with particle diameter, the enhancing grain volume fraction is 5～25%Vol, fully mix together, can provide by the smelting furnace that has mechanical agitation mechanism (1), also can and provide by the composite ingot casting remelting of casting after the liquid state stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95113800A CN1060978C (en) | 1995-12-19 | 1995-12-19 | Metal-base composite horizontal continuous casting method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95113800A CN1060978C (en) | 1995-12-19 | 1995-12-19 | Metal-base composite horizontal continuous casting method and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1128186A CN1128186A (en) | 1996-08-07 |
| CN1060978C true CN1060978C (en) | 2001-01-24 |
Family
ID=5080109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95113800A Expired - Fee Related CN1060978C (en) | 1995-12-19 | 1995-12-19 | Metal-base composite horizontal continuous casting method and equipment |
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|---|---|
| CN (1) | CN1060978C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377814C (en) * | 2006-09-04 | 2008-04-02 | 北京科技大学 | Coating material horizontal continuous casting direct recombination forming apparatus and technology |
| CN102489677A (en) * | 2011-12-26 | 2012-06-13 | 大连理工大学 | Block-type amorphous alloy plate continuous casting device and method thereof |
| CN105598168A (en) * | 2016-01-25 | 2016-05-25 | 江西理工大学 | Short-flow continuous forming device for tin-bismuth alloy welding wire and forming method |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0067433A1 (en) * | 1981-06-17 | 1982-12-22 | Kawasaki Jukogyo Kabushiki Kaisha | Horizontal continuous casting installation |
| CN1079512A (en) * | 1992-06-02 | 1993-12-15 | 中国科学院金属研究所 | The manufacture method of casting metal based composite material |
-
1995
- 1995-12-19 CN CN95113800A patent/CN1060978C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0067433A1 (en) * | 1981-06-17 | 1982-12-22 | Kawasaki Jukogyo Kabushiki Kaisha | Horizontal continuous casting installation |
| CN1079512A (en) * | 1992-06-02 | 1993-12-15 | 中国科学院金属研究所 | The manufacture method of casting metal based composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1128186A (en) | 1996-08-07 |
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