CN1057132C - Aluminium-base electric power plant fly-ash compsite material and preparation method and device - Google Patents
Aluminium-base electric power plant fly-ash compsite material and preparation method and device Download PDFInfo
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Abstract
The present invention relates to an aluminum-based fly ash composite material, a preparation method thereof and a device thereof, wherein the aluminum-based fly ash composite material uses aluminum and aluminum alloys as a basal body and uses fly ash of electric power plants (waste materials of heat-engine plants) as an adding phase. The particle size of the fly ash is between 0.5 and 500 mu m, and the content of the fly ash is from 0.5 to 30%. The mechanical property of the composite material is equivalent to that of a basal alloy, and the wear resistance and the shock absorption of the heat-engine plant is obviously superior to those of a basal alloy. The technology for preparing the composite material is a stirring method, a stirring device comprises at least one layer of stirring paddles in paired mounting, and the device and the technology are easy. The composite material has low production cost and is a green engineering material with energy saving.
Description
The present invention relates to a kind of with aluminium and alloy thereof as body material, with flying ash in electric power plant as the aluminium-base electric power plant fly-ash compsite material that adds phase.
Since this century the seventies, science branch art is in the development of producing and the various fields in life acquisition is advanced by leaps and bounds.Development of high-tech such as aerospace has particularly proposed a series of new demand to the various performances of material.Wherein mainly comprise: the specific rigidity, the specific tenacity height that require material; Corrosion-resistant, wear-resistant.And have good low temperature and high-temperature behavior.Certain chemistry and dimensional stability are arranged.Aluminum matrix composite is development in recent years one class novel material that get up, that have this performance just.The proportion that it has aluminium alloy concurrently little, corrosion-resistant with add high strength mutually, the advantage of high rigidity, increased the characteristics that wear resistance is good, shock-resistant and damping property is good simultaneously again.Under the promotion of huge social demand, aluminum matrix composite becomes the focus problem that material supply section educational circles is generally paid close attention to, and becomes the pioneer of metal-base composites industry.
Patent of invention ZL85100575 has reported a kind of ceramic aluminum alloy and manufacture method thereof.Interpolation, is added in the aluminum or aluminum alloy with technologies such as composite casting, vortex methods as strengthening phase without the bauxitic clay particle that coats in this matrix material, makes ceramic aluminum alloy.This invention manufacturing process is simple, with low cost, can be used for friction pairs such as piston, cylinder sleeve, is used for the heat-resistant part such as compressor blade, heat exchanger of turbine engine, is used in armour, shielding material, also can reduce the manufacturing cost of decoration.But bauxitic clay dispersed bad, agglomerating cotton-shaped distribution in alloy from this product metallograph as can be seen.The various aspects of performance of alloy all can be subjected to influence in various degree.Patent of invention CN1033987A discloses a kind of method that adopts the blocking layer to prepare metal-base composites.A permeable pottery bulk material is made in this invention earlier, its surperficial critical layer of determining has the blocking layer, again contain 10% to 100% left and right sides nitrogen volume, all the other are in the gas of argon gas or hydrogen for non-oxidized gas, the permeable block of material of molten aluminum magnesium alloy and this is contacted.Under normal pressure, the spontaneous ceramic block that gos deep into of molten alloy is till reaching the blocking layer.Alloy solid can place near the permeability stupalith bedding with blocking layer, and is heated to molten state, preferably about at least 700 ℃, so that form the reticulated aluminum matrix composite with osmose process.Outside the demagging, the assistant alloy element can be used together with aluminium.The mixture of producing can comprise discontinuous aluminium nitride phase in aluminum substrate.The quality of alloy that this method is produced is higher, stable performance.But production efficiency is low, is difficult to form scale in batches.Patent of invention CN 1105301 discloses a kind of casting production process of piston of Al-base ceramic composite material.This invention selects for use zl108 alloy as body material, and silicon-carbide particle adds material as pottery, in SiC account for 8～12%, zl108 alloy accounts for 88～92% ratio preparation, compound or suspended pouring method is composited through paddling process.This invention is it is called in invention not only can satisfy the requirement of introducing with the engine piston supporting technology of new generation that designs voluntarily, and has opened up road for developing the high speed high output engine piston that adapts to the world market requirement.Patent of invention CN 1104568A has announced a kind of method of two-stage pressurization extrusion casting manufacturing non-continuous reinforced aluminium-based composite material of non-continuous reinforced aluminium-based composite material.Wherein first step pressure is chosen less force value, and second stage pressure is chosen bigger force value.This method can reduce and strengthen the distortion of body prefabricated section in extrusion process, can reduce the porosity in the matrix material again.This manufacture method belongs to the extrusion casting category.Can only be used for the manufacturing of smaller size parts, and exist complex process, cost equally than problems such as height.
Task of the present invention is in alloy matrix aluminum, waste material flying ash in electric power plant with power plant emission serves as to add phase, prepare a kind of use properties and recombining process performance and be better than existing aluminum base alloy matrix material, particularly have the aluminium-base electric power plant fly-ash compsite material of wear resistance and vibration damping preferably, and the preparation method of this matrix material and device.
The technical scheme of preparation aluminium-base electric power plant fly-ash compsite material is:
Matrix material of the present invention by aluminium, basic strengthening element, grain refining and silicon mutually alterant, flying ash in electric power plant and impurity forms, its matrix selects for use multiple aluminum alloy materials, interpolation phase material to select the flying dust of fuel-burning power plant as trash discharge respectively.Flying ash in electric power plant is based on circular and ellipse, and the part fly ash granule has hollow or vesicular structure.
The main use properties and the recombining process performance of considering matrix material of composition design of matrix alloy.Use properties mainly is meant its mechanical property (σ
sσ
bσ
tδ), physicals (α, ρ), chemical property (anti-corrosion, painted).Processing performance mainly refers to casting technique performance (flowability of alloy melt, alloy melt are to the wettability of fly ash granule).
In order to guarantee the mechanical property of matrix material, should contain the element that a certain amount of magnesium, silicon, copper, zinc, manganese etc. form strengthening phase in the matrix alloy.
Magnesium has special meaning in aluminium-base electric power plant fly-ash compsite material.It not only can form strengthening phase with element such as silicon, improves intensity, the hardness of matrix alloy, and obviously improves alloy melt to the fly ash granule wettability of the surface, quickens recombination process, reduces boundary defect, improves interface bond strength.Other element with similar effect also comprises: calcium, copper, cerium, lanthanum, lithium isoreactivity element.
Manganese rises on the one hand in alloy and eliminates the needle-like iron phase, reduces the iron phase deleterious effect, improves the solidity to corrosion of alloy on the other hand.
The content of silicon more after a little while, the silicon of trace main with magnesium formation strengthening phase.When the content of silicon was higher, it can significantly improve the flowability of alloy, reduced casting flaw.Reduce the coefficient of expansion of alloy, guarantee the dimensional stability of part.In the aluminium-base electric power plant fly-ash compsite material melt, the existence of silicon can suppress aluminium, the magnesium isoreactivity element reductive action to silicon-dioxide in the flying dust to a certain extent, reduces interfacial brittle.
The content of silicon surpasses after 4% in matrix alloy, should add Sr, Na, Ce, La, Sb, the Td iso-metamorphism element of trace.Control silicon phase morphology, the obdurability of raising alloy.
In the technology with vortex paddling process Foundry Production cast aluminum base electric power plant fly-ash compsite material, the control of alpha-aluminum phase grain-size has singularity.Adding grain-refining agents such as a certain amount of titanium, boron, rare earth element in matrix alloy is very important.
Under above principle of design instructed, the matrix alloy composition range (weight percentage) of aluminium-base electric power plant fly-ash compsite material of the present invention was:
1. basic strengthening element: silicon 0-21%; Magnesium 0.1-11%; Copper 0-11%; Manganese 0-2%; Zinc 0-13%; Nickel 0-3%; Chromium 0-1%; Rare earth 0-5%.
2. grain refining and silicon alterant mutually: titanium 0-0.5%; Boron 0-0.1%; Zirconium 0-0.3%; Antimony 0-0.3%; Sodium 0-0.3%; Strontium 0-0.3%; Cerium 0-0.1%; Lanthanum 0-0.1%; Tellurium 0-0.2%.
3. the foreign matter content upper limit: iron＜1.8%.
4. all the other are aluminium.
Matrix material adds phase, flying ash in electric power plant be in boiler of power plant fine coal at the oxidation products of 1700～1900 ℃ of instantaneous formation of high temperature.Its chemical ingredients almost comprises all elements in the earth's crust (as shown in Table 1).This fly ash granule has on microcosmic near spheric particle appearance, and wherein considerable part is a hollow ball.The stereoscan photograph of granule-morphology is shown in accompanying drawing 1 (a) and (b).
From flying dust actual sample and the technical information of collecting, the composition of flying ash in electric power plant, pattern are subjected to all multifactor impacts such as the fuel type, flue dust collecting device type of power plant.Dry ash and wet ash two big classes have been seen on the big class.In general, the particle of dry ash is thicker, relatively the rounding dispersiveness is relatively good for particle; The particle of opposite wet ash is more tiny, but the tendency of adhesion caking is bigger.What relatively be fit to the manufacturing aluminum matrix composite is dry ash.Its form is based on circle and the ellipse shown in Fig. 1 (a) and (b) basically.The part fly ash granule has hollow or vesicular structure.The damage of the intensity of the second relative matrix of this form of interpolation, plasticity is little in metal material matrix.Use with the operating mode that needs wear-resisting, damping under necessarily have good prospect.
The chemical ingredients of table one, flying ash in electric power plant
| Sample number | Al 2O 3 | SiO 2 | CaO | Fe 2O 3 | MgO |
| 1 | 44.32 | 50.36 | 1.07 | 3.57 | 0.68 |
| 2 | 47.91 | 49.75 | 0 | 2.34 | 0 |
The add-on (weight percentage) of the interpolation phase of aluminium-base electric power plant fly-ash compsite material in this programme--flying ash in electric power plant is 0.5-30%.
The manufacturing processed of aluminium-base electric power plant fly-ash compsite material comprises the melting and the process of setting three parts of fly ash granule preheating, aluminium alloy, and its process is: 1 alloying ingredient and melting
On the basis of selected base alloy, consider and carry out the scaling loss that more stirring can promote some element in the recombining process, the adjustment of suitably preparing burden.Make the ultimate aim alloying constituent within the alloy standard range.The chemical analysis tracking results of carrying out in the actual fusion process shows that this method still is effectively (to see application example 1; 2).The melting of 2 flying dust pre-treatment and alloy
The flying dust of collecting at first passes through operations such as preliminarily dried, screening, and it is standby to sub-elect all suitable particulate material of shape and granularity.The scope of choosing of flying dust granularity is decided by the application target of matrix material.When adding phase as the reinforcement that improves matrix alloy intensity, improves the wear resistance of alloy, the particulate granularity should smaller (in general, scope be at the 0.5-50 micron); When being purpose with the damping property that improves alloy, the density that reduces matrix material, that the granularity of flying dust is wanted is big (generally can be between the 10-350 micron, even bigger).
Flying dust was wanted preheating before being added into alloy melt.The flying dust preheating temperature joins in the alloy between 300 ℃-750 ℃ with can guaranteeing the fly ash granule uniformity.Best technological temperature is 400 ℃-500 ℃.The volume number that depends on flying dust that each preheating can is adorned warm up time.Charge amount is many more, and warm up time just should be long more.
The melting technology of alloy is identical with the conventional melting technology of matrix alloy.3 recombining process parameters
Combined temp is exactly the temperature of adding flying dust and beginning to stir.Experiment is carried out between 650 ℃-800 ℃.The result shows that optimum temperature range is subjected to the influence of crucible thermal capacity, stirring tool thermal capacity and stirring technique parameter.Optimum temps is 700 ℃-750 ℃ under this experiment condition.
This technological process adopts stirring casting method, promptly adds flying dust in the aluminium of fusing, by the stirring of oar, makes it be involved in vortex to reach equally distributed purpose.
The process unit sketch as shown in Figure 2.1 is electric motor among the figure, and the rotary power of stirring rake is provided; The 2nd, aluminium alloy melt; The 3rd, smelting pot should adopt the stupalith manufacturing as far as possible, when making with metallic substance within it portion answer swabbing; 4 for the melting body of heater, and body of heater and bell are formed a closed structure to guarantee that furnace atmosphere is in non-oxidizable, and stove adopts resistive heating, and the outside is equipped with the rotation leaning device and is confessed material and use; 6 is bell, adopts Magneticfluid Seal Technique respectively between bell and body of heater, stirring rake, protective gas is housed respectively on bell and the body of heater feeds pipeline 7; 5 is stirring rake, and its basic structure as shown in Figure 3.In Fig. 3,1 is the axle of stirring rake, and thinner one section processes regular polygon and leans on shape (being generally regular hexagon) in its lower end, so that cooperate transferring power with oar cover 3; 2 is blade, blade among the present invention adopts two dimensional structure, easy to process, the life-span height, generally be sintered into one with stupalith (for example silicon carbide) manufacturing and axle sleeve 3, angle α between blade and the horizontal plane is bigger to the influence of recombining process effect, and the α value changes between 30～60 degree, in general can adopt 45 degree; The 4th, fastening nut with the thread fit of 1 end, guarantees the stable installation of 2,3 unitized constructions on 1, should take locking art breading before using.
Because fly ash granule is distributed into the revolving force that the direct driving force of molten aluminium is a stirring rake, so the speed of rotation of stirring rake is unusual important technical parameters.Its useful range is subjected to the influence of size, shape and the alloying constituent of crucible and blade.Under this experiment condition, optimum range is 1800-3500rpm.Find the requirement difference of the granular size difference of flying dust in the experiment to stirring velocity in the recombining process.Bigger fly ash granule just than being easier in adding, and is broken up than being easier under less speed.The flying dust of preheating is carried out in same source place under the same conditions, and as can be seen, big particle is not easy to into bulk on macroscopical form, and adding fashionable almost is an adding.And the small-particle flying dust is easy to form bulk, usually is collecting with reunion to enter molten aluminium, by the effect of oar and the impact of aluminium liquid it is smashed in aluminium liquid, and little then being not easy to of oar speed opened.4 casting techniques
The aluminium alloy compound melt of making through above-mentioned technology mobile relatively good can be cast as the matrix material alloy pig with common process.
So the typical optics metallurgical of the aluminium-base electric power plant fly-ash compsite material of producing is shown in attached 4 (a) and (b).In Al-alloy based body tissue, be uniform-distribution with fly ash granule.
Quantitative metallography is measured (JVC TK-5310 image analysis processing system) measuring result: when flying dust added 10% (weight percentage), its percent by volume was between the 19.84-20.75%.
The organizing as shown in Figure 5 at the interface of particle and matrix in the aluminium-base electric power plant fly-ash compsite material.The interface of matrix material is in conjunction with good under the normal process.Several processing parameters are as follows to the influence of interfacial configuration:
The Interface Microstructure of aluminium-base electric power plant fly-ash compsite material churning time is relatively short, temperature is lower, Mg content fewer in, particle is keeping original pattern and composition.The outer field matrix in interface does not change yet.Shown in accompanying drawing 5 (a).Long in churning time, when temperature is higher, around particle, there is silicon phase particle to separate out (shown in accompanying drawing 5 (b)).Estimate that this and the silicon oxide of silicon in preferential forming core of particle surface and particle are reduced that to cause that the near interface silicon concentration increases relevant.After Mg content continued to increase, Mg appearred around the particle
2Si phase (as accompanying drawing 5 (c)).This is the result of unnecessary magnesium and pasc reaction.
Interfacial chemical reaction between fly ash granule and the matrix alloy has very big influence to the physical and chemical performance of material.Surface reaction has increased the bound energy between particle and the matrix on the one hand, has increased the fragility at interface on the other hand, reduces the toughness index of alloy.In practical study work, to reasonably control the surface reaction degree according to matrix and particulate different properties.Technical scheme of the present invention is also added trace element (as manganese, nickel, chromium, rare earth element etc.) except with processing parameters such as preheating temperature, the whipping temp control surface reaction, and surface reaction is adjusted in the proper scope.
Because the adding of fly ash granule the existence of loose particles (particularly hollow and), the tensile strength of matrix material is slightly descended.But decline scope is generally less than 5%.The general Schwellenwert that still is higher than the matrix alloy standard code.
We have measured the density of aluminium-base electric power plant fly-ash compsite material in the preliminary experiment.Measuring result shows that the density of matrix material is linear descend (seeing application example 2) along with the increase of grain volume fraction.
The requirement of damping property is along with the requirement of control nuisance noise puts forward.Damping property is low to be the intrinsic weakness of metallic substance.Therefore, the noise of the movable machinery made from metallic substance is all bigger.How to reduce nuisance noise that mechanical vibration send and be the hot issue of engineering circle in recent years.Since the seventies material supplier author from the performance of material own, the damping performance that increases material has begun positive exploration with regard to how.Target is on the basis that guarantees the premium properties that metallic substance had, and improves its receptivity to vibrating noise.Using matrix material is one of method that reaches this target.
This paper calculates reduction coefficient (δ) and intrinsic weakening energy (Specific DampingCapacity abbreviates SDC as) respectively with formula (1), (2).
In the formula: δ-vibration damping coefficient
A
nThe amplitude of N vibration of-Di
A
N+1The amplitude of N+1 vibration of-Di
The intrinsic weakening energy of SDC-
The energy of N vibrational period of W-
The power loss of N vibrational period to N+1 vibrational period of Δ W-
The wear resistance of aluminium-base electric power plant fly-ash compsite material improves than matrix alloy (sees application example 1) more than 20%.
Adopt the aluminium-base electric power plant fly-ash compsite material of technical solution of the present invention preparation to have following effect:
The density of aluminium-base electric power plant fly-ash compsite material is lower than matrix alloy, and strength and stiffness are suitable with matrix alloy at least.Specific tenacity and specific rigidity are greater than matrix alloy.The damping of aluminium-base electric power plant fly-ash compsite material, wear resisting property are higher than matrix alloy far away.Can substitute matrix alloy as structured material, play and reduce construction weight, the output of minimizing mechanism noise, the i.e. good result of energy-saving and noise-reducing.The interpolation phase of matrix material of the present invention--flying ash in electric power plant is the waste of power industry discharging.It is used as the cost cost of industrial raw materials very low, reduced the environmental pollution that is caused by it simultaneously, economic benefit and social benefit are all fairly obvious.
The processing method that adopts technical solution of the present invention to prepare aluminium-base electric power plant fly-ash compsite material has following effect:
Compare with existing Technology, the technology that the paddling process of technical solution of the present invention is produced particulate reinforced composite is simple, particulate preheating temperature wide ranges, and the yield rate height, running cost is low.
The preparation facilities that adopts technical solution of the present invention to prepare aluminium-base electric power plant fly-ash compsite material has following effect:
Stirring rake simple in structure, the anti-erosional competency of material is strong.Magneticfluid Seal Technique is adopted in sealing between bell and body of heater, the stirring rake axle.Good sealing effect has guaranteed the protection effect of furnace atmosphere to aluminium alloy melt.Thereby the tissue and the performance requriements of matrix material have been guaranteed.
Below in conjunction with accompanying drawing narration embodiments of the invention.
Fig. 1 (a) is the stereoscan photograph than the fine particle flying ash in electric power plant; Fig. 1 (b) is more coarse grained stereoscan photograph.
Fig. 2 is the sketch of composite material preparation process device.
Fig. 3 (a) stirring rake structure diagram; (b) A that is (a) is to view.
Fig. 4 (a) and (b) be the optics metallurgical photo of aluminium-base electric power plant fly-ash compsite material.
Fig. 5 (a) and (b), (c) are aluminium-base electric power plant fly-ash compsite material optics metallurgical photos at the interface.Wherein Fig. 5 (a) is the interface that whipping temp is lower, the time forms more in short-term, and the Chemical Composition of particle strongthener and near the body material it does not all change, and the interface is obvious.Fig. 5 (b) is that temperature is higher, and churning time is longer, aluminium, magnesium and other active element has taken place to the silicon oxide reductive action in the particle, and particle surface forms the later tissue of silicon phase core.Around particulate, grow the granulation tissue of silicon phase.Fig. 5 (c) is after the magnesium amount is excessive, and the interface microstructure of magnesium silicon compound (Mg2Si) appears near interface around particle.
Fig. 6 is the density of aluminium-base electric power plant fly-ash compsite material and the relation between the fly ash content.
Fig. 7 is preparation technology's schema of aluminium-base electric power plant fly-ash compsite material.
Specific examples is as follows, and the embodiment that implements the present invention program certainly is not only following 3.Application Example 1
From the application case material in the future, the ZL101 cast aluminium alloy is adopted in first round experiment.Proportion scheme and actual melting result are as shown in Table 2.
Table two, cast aluminium ZL101 alloy casting effect
| Composition | Silicon | Manganese | Magnesium | Iron | Flying dust |
| Food ingredient wt-%) | 7.0 | 0.3 | 0.5 | 0.27 | 10 |
| Analytical results wt-%) | 7.5 | 0.34 | 0.28 | 1.03 | 8.6 |
The mechanical property of matrix material and matrix alloy contrasts as shown in Table 3, and damping performance as shown in Table 4.Data find out that the mechanical property and the matrix alloy of matrix material are suitable from table, and damping performance is apparently higher than matrix alloy.ZL 101 alloy matrix+the wear weight loss of 10% electric power plant fly-ash compsite material sample under this paper experiment condition is 0.0142 gram.Under the same conditions, the wear weight loss of ZL 101 alloy is 0.0186 gram.The two contrast wear weight loss of sample descends about 24% before and after adding flying dust.As seen the wear resistance of aluminium-base electric power plant fly-ash compsite material is better than matrix alloy.
The mechanical property of table three, technic metal
| Sample number | Elastic modulus E (GPa) | Tensile strength sigma b(MPa) | Yield strength σ 0.2(MPa) | Unit elongation (%) | Hardness (HB, HBS) |
| 1 | 151.6 | 129 | 3.0 | 79 | |
| 2 | 157.5 | 134 | 3.1 | 90 | |
| 3 | 72.4 | 155(165) | (125) | 2(6) | 50 |
Annotate: the composition of each number sample and state:
1--ZL101 alloy substrate+10% flying dust (45-76 μ)
2--ZL101 alloy substrate+10% flying dust (＜45 μ)
The 3--ZL101 alloy
Application Example 2
The application of shell body material is set out on the lenient side, and the body material of application examples 2 is selected the ZL303 alloy for use.Chemical ingredients as shown in Table 5 after batching and the founding.Fly ash granule content is to the influence such as the table six and shown in Figure 6 of the density of matrix material.Relation between its density value and the fly ash content is straight line substantially.The detected result of aluminium-base electric power plant fly-ash compsite material mechanical property as shown in Table 7.
Table four, cast aluminium 303 alloy casting effects
The density measurement value of table five, aluminium-base electric power plant fly-ash compsite material
| Composition | Silicon | Manganese | Magnesium | Iron | Flying dust |
| Food ingredient (wt-% | 1.2 | 0.3 | 5.7 | 0.11 | 9 |
| Analytical results (wt-% | 1.5 | 0.35 | 4.5 | 0.93 | 8.8 |
| Granule content (%) | Density value (g/cm3) |
| 0 | 2.650 |
| 5.43 | 2.565 |
| 13.68 | 2.327 |
| 20.54 | 2.217 |
Table six, aluminium-base electric power plant fly-ash compsite material mechanical property experimental results
| Sample number | Elastic modulus E (GPa) | Tensile strength sigma b(MPa) | Yield strength σ 0.2(MPa) | Unit elongation (%) | Hardness (HB, HBS) |
| 1 | 135 | 97 | 1.8 | 92 | |
| 2 | 66 | 145(165) | (100) | 1(3) | 55(65) |
Annotate: the composition of each number sample and state:
1-ZL303 alloy substrate+20% flying dust (76-97 μ)
The 2--ZL303 alloy
The damping property experimental data such as the table seven of aluminium-base electric power plant fly-ash compsite material and contrast material thereof.From the cushioning ability of the visible aluminium-base electric power plant fly-ash compsite material of these data apparently higher than two kinds of comparative alloy.
The damping property experimental data of table seven, aluminium-base electric power plant fly-ash compsite material
Application Example 3
| Sample | Reduction coefficient δ | Intrinsic weakening energy (SDC, %) |
| ZL101 alloy sheets (as cast condition) | 0.162 | 27.5 |
| Aluminium-base electric power plant fly-ash compsite material A | 0.243 | 40.2 |
Consideration is adopted aluminium-base electric power plant fly-ash compsite material in structure in aluminium alloy, and having tested with LD31 (6063) alloy is the aluminium-base electric power plant fly-ash compsite material of matrix.Alloy substrate batching composition as shown in Table 8.Metallographic structure is shown in Fig. 4 (b).The damping property experimental data as shown in Table 9.
Table eight, cast aluminium LD31 alloy casting effect
| Composition | Silicon | Manganese | Magnesium | Iron | Flying dust |
| Food ingredient (wt-% | 0.6 | 0.05 | 0.85 | 0.10 | 20 |
| Analytical results (wt-% | 0.73 | 0.10 | 0.64 | 0.41 | 16.7 |
The damping property experimental data of table nine, aluminium-base electric power plant fly-ash compsite material
| Sample | Reduction coefficient δ | Intrinsic weakening energy (SDC, %) |
| 6063 alloy sheets (extruding) | 0.177 | 29.2 |
| Aluminium-base electric power plant fly-ash compsite material B | 0.280 | 42.7 |
Claims (5)
- Aluminium-base electric power plant fly-ash compsite material by aluminium, basic strengthening element, alterant, flying ash in electric power plant and impurity are formed mutually with silicon in grain refining, it is characterized in that flying ash in electric power plant is based on circular and ellipse, the part fly ash granule has hollow or vesicular structure, by aluminium, basic strengthening element, grain refining and silicon mutually the alloy ingredient scope of the matrix material formed of alterant, flying ash in electric power plant and impurity be (weight percentage):A. basic strengthening element: silicon 0-21%, magnesium 0.1-11%, copper 0-11%, manganese 0-2%, zinc 0-13%, nickel 0-3%, chromium 0-1%, rare earth 0-5%;B. grain refining and silicon alterant mutually: titanium 0-0.5%, boron 0-0.1%, zirconium 0-0.3%, antimony 0-0.3%, sodium 0-0.3%, strontium 0-0.3%, cerium 0-0.1%, lanthanum 0-0.1%, tellurium 0-0.2%;C. the foreign matter content upper limit: iron＜1.8%;D. flying ash in electric power plant: 0.5-30%;E. all the other are aluminium.
- 2. be used to prepare the method for the described aluminium-base electric power plant fly-ash compsite material of claim 1, it is characterized in that being undertaken by following technology:A) by the fusing of the described matrix alloy batching of claim 1, simultaneously flying ash in electric power plant is carried out preheating between 300-750 ℃;B) when the matrix alloy fusing reaches combined temp 650-800 ℃, begin to add flying ash in electric power plant, and adopt paddling process that the flying ash in electric power plant uniform particles is distributed in the alloy melt;C) ingot casting.
- 3. by the method for the described aluminium-base electric power plant fly-ash compsite material of claim 2, it is characterized in that said adding flying ash in electric power plant adopts dry ash, its granularity is between the 0.5-500 micron.
- 4. the preparation facilities that is used for the described aluminium-base electric power plant fly-ash compsite material of claim 1, it is characterized in that forming by smelting pot, smelting furnace and agitator, smelting pot places in the smelting furnace, and agitator inserts in the interior alloy melt of smelting pot, and is rotated by the motor drive stirring rake.
- 5. by the described aluminium-base electric power plant fly-ash compsite material preparation facilities of claim 4, it is characterized in that said stirring rake adopt 2 layers and more than, blade is by tilting to install at an angle with horizontal direction, the inclination angle is 30 °～60 °.
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| CN103757484B (en) * | 2013-12-19 | 2016-05-25 | 铜陵金力铜材有限公司 | The aluminium alloy wires that tensile strength is high |
| CN104451275A (en) * | 2014-12-19 | 2015-03-25 | 常熟市精诚铝业有限公司 | Corrosion-resistant alloy pipe |
| CN104588617B (en) * | 2015-01-23 | 2018-08-24 | 同济大学 | The method that one step prepares Metal Substrate light composite material |
| CN108913966A (en) * | 2018-04-02 | 2018-11-30 | 西安融达铝合金线材有限公司 | A kind of aluminum alloy materials |
| CN110551912A (en) * | 2018-06-01 | 2019-12-10 | 台湾海洋大学 | Method for manufacturing aluminum-based fly ash composite material |
| CN114150237B (en) * | 2021-11-26 | 2022-09-13 | 苏州慧驰轻合金精密成型科技有限公司 | High-toughness structural part precision forming aluminum alloy material suitable for new energy automobile and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0282191A1 (en) * | 1987-02-24 | 1988-09-14 | Robert B. Pond, Sr. | Metal composites with fly ash incorporated therein and a process for producing the same |
| JPH03177532A (en) * | 1989-12-04 | 1991-08-01 | Toyota Motor Corp | Lightweight low expansion composite material |
-
1997
- 1997-01-05 CN CN97101403A patent/CN1057132C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0282191A1 (en) * | 1987-02-24 | 1988-09-14 | Robert B. Pond, Sr. | Metal composites with fly ash incorporated therein and a process for producing the same |
| JPH03177532A (en) * | 1989-12-04 | 1991-08-01 | Toyota Motor Corp | Lightweight low expansion composite material |
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| CN1174895A (en) | 1998-03-04 |
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