CN1128186A - 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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- CN1128186A CN1128186A CN 95113800 CN95113800A CN1128186A CN 1128186 A CN1128186 A CN 1128186A CN 95113800 CN95113800 CN 95113800 CN 95113800 A CN95113800 A CN 95113800A CN 1128186 A CN1128186 A CN 1128186A
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Abstract
The present invention prepares grain-reinforced metal-base composite. The setting of magnetic stirrer, crystallizer and middle heat-insulating ladle makes the reinforcing substance suspend evenly in alloy liquid. Metal-base composite produced based on the present invention has even and compact structure and good comprehensive property and may be widely used for manufacturing key parts in automobile, aviation and ordnance industry.
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 Sci Eng, 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.
Order of the present 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.
Further specify in conjunction with the accompanying drawings more below.
Horizontal continuous-casting machine among the present invention, insulation bag (9), the horizontal crystallizer of magnetic stirrer (3) (4) etc. in the middle of having, insulation was wrapped within (9) in the middle of magnetic stirrer (3) was nested in, middle insulation bag (9) is up big and down small, suitable for readingly be connected with smelting furnace (1), go out head piece and horizontal crystallizer (4) smoothly joins by chute.As shown in Figure 1, 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 casting, the enhancing uniform particles is suspended in the alloy liquid, has avoided the sedimentation of particle, and insulation bag (9) and horizontal crystallizer (4) in the middle of reasonably being provided with.
Said particles reiforced metal-base composition of the present invention and horizontal continuous-casting method are with composite mixed liquor (2), its temperature is higher than the matrix alloy liquidus temperature, insulation is wrapped in (9) in the middle of pouring into, the middle composite liquid level of insulation bag (9) is 100～200mm in the middle of the control, pouring temperature is higher than above 50～150 ℃ of alloy liquid phase line, the composite mixed liquor is stirred by magnetic stirrer before entering crystallizer, after the horizontal crystallization of flowing through is cooled off by secondary, enter in the carry-over pinch rolls (6) of haulage gear, go out machine with roller and become a useful person, 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 links to each other 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 the quick continuous solidification of alloy liquid become composite stick (7), or become section bars such as plate, base tubing.
Realization of the present invention also is magnetic stirrer (3), can be the rare earth permanent magnet agitator, and as shown in Figure 2, some magnetic poles (10) radially evenly distribute.
Realization of the present invention is that also 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 garden shape, annular, the preparation with the particles reiforced metal-base composition that adapts to rod, pipe, plate, base such as flat, trapezoidal, square.
The length of horizontal crystallizer (4) changes because of the composition of the composite of institute's continuous casting is different with kind, can change between 10～200mm.Because the setting of rare earth permanent magnet agitator, elder generation when entering horizontal crystallizer regulates magnetic field intensity and can make the particle reinforce keep suspending and motion state in alloy liquid, and make solid liquid interface (5) become straight through a rotary permanent-magnet field when the particle reinforce.Improved the reinforce distributing homogeneity, the refinement microstructure of composite increases substantially the combination property of material.
Realization of the present invention is that also the particle reinforce comprises SiC, AlO
3, B
4C, TiB
2, SiO
2, TiC and metal oxide thereof, nonmetal oxide, carbide, nitride, boride etc.
The composite mixed liquor can be to be that the discontinuous particle reinforce of 5～150 μ m adds in the metal alloy of molten state such as aluminium (Al), magnesium (Mg), copper (Cu), zinc (Zn) alloy with particle diameter, account for 5～25%vol, get through fully mixing stirring, also can get by remelting composite ingot casting.
The illustrated alloy liquid mixture that contains the particle reinforce of the present invention is provided by the special liquid mechanical stirring equipment that links to each other with horizontal caster, and perhaps the grain reinforced metal composite material melt that is provided by eddy-current heating remelting or resistance heated remelting provides.
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 (3), 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
4-horizontal crystallizer 5-solid liquid interface 6-carry-over pinch rolls
7-composite stick, 8-water distributing plate 9-centre insulation bag
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 XGF10-1 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
0.2=300MPa, σ
b=335Mpa, E=82GPa, δ=3.5%.
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, and T6 handles the back room-temperature mechanical property and reaches σ
6=345MPa, σ
0.2=305MPa, δ %=3.2%, E=85GPa.
Claims (8)
1. metal-base composite horizontal continuous casting method and equipment, it is characterized in that the horizontal continuous-casting facility are incubated bag (9), magnetic stirrer (3), horizontal crystallizer (4) etc. in the middle of having, insulation was wrapped within (9) in the middle of magnetic stirrer (3) was nested in, middle insulation bag (9) is up big and down small, suitable for readingly be connected with smelting furnace (1), go out head piece and horizontal crystallizer (4) smoothly joins by chute.
2. metal-base composite horizontal continuous casting method and equipment, it is characterized in that realizing the horizontal continuous-casting of particles reiforced metal-base composition by equipment as claimed in claim 1, its method step is with composite mixed liquor (2), its temperature is higher than the matrix alloy liquidus temperature, insulation is wrapped in (9) in the middle of pouring into, the middle composite liquid level of insulation bag (9) is 100～200mm in the middle of the control, pouring temperature is higher than above 50～150 ℃ of alloy liquid phase line, the composite mixed liquor is stirred by magnetic stirrer before entering crystallizer, the horizontal crystallizer (4) of flowing through, after the secondary cooling, enter in the carry-over pinch rolls (6) of haulage gear, go out machine with roller and become a useful person, above step is continuously carries out.
3. metal-base composite horizontal continuous casting method as claimed in claim 1 and equipment is characterized in that magnetic stirrer (3) can be the rare earth permanent magnet agitator, and some magnetic poles (10) radially evenly distribute.
4. as claim 1 or 3 described metal-base composite horizontal continuous casting method and equipment, it is characterized in that horizontal crystallizer (4) has endoporus, interior cover, cavity, water distributing plate (8), overcoat, interior overcoat is made by good heat conducting material, cavity is between interior overcoat, in establish water distributing plate (8), interior hole shape can be garden shape, annular, flat, trapezoidal, square etc. to adapt to the preparation of particles reiforced metal-base compositions such as rod, pipe, plate, base.
5. metal-base composite horizontal continuous casting method as claimed in claim 4 is characterized in that with equipment the length of horizontal crystallizer (4) changes because of the composition of the composite of institute's continuous casting is different with kind, can change between 10～200mm.
6. metal-base composite horizontal continuous casting method as claimed in claim 2 and equipment is characterized in that the particle reinforce comprises SiC, AlO
3, B
4C, TiB
2, SiO
2, TiC and metal oxide thereof, nonmetal oxide, carbide, nitride, boride etc.
7. as claim 2 or 6 described metal-base composites continuous cast method and equipment, it is characterized in that the composite mixed liquor can be is that the discontinuous particle reinforce of 5～150 μ m adds in the metal alloy of molten state such as aluminium (Al), magnesium (Mg), copper (Cu), zinc (Zn) alloy with particle diameter, account for 5～25%vol, get through fully mixing stirring, also can get by remelting composite ingot casting.
8. metal-base composite horizontal continuous casting method as claimed in claim 1 or 2 and equipment is characterized in that method and apparatus also is applicable to the horizontal casting of matrix alloy.
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 true CN1128186A (en) | 1996-08-07 |
| CN1060978C CN1060978C (en) | 2001-01-24 |
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ID=5080109
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| 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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Cited By (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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57209752A (en) * | 1981-06-17 | 1982-12-23 | Kawasaki Heavy Ind Ltd | Horizontal continuous casting installation |
| CN1037117C (en) * | 1992-06-02 | 1998-01-21 | 中国科学院金属研究所 | Method for making casting metal based composite material |
-
1995
- 1995-12-19 CN CN95113800A patent/CN1060978C/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN1060978C (en) | 2001-01-24 |
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