CN109487105A - The preparation process of aluminium alloy - Google Patents
The preparation process of aluminium alloy Download PDFInfo
- Publication number
- CN109487105A CN109487105A CN201811558223.4A CN201811558223A CN109487105A CN 109487105 A CN109487105 A CN 109487105A CN 201811558223 A CN201811558223 A CN 201811558223A CN 109487105 A CN109487105 A CN 109487105A
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- preparation process
- alloy powder
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- alloy
- aluminium alloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
- C22C32/0063—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides based on SiC
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention provides the preparation process of aluminium alloy, includes the following steps: to collect alloy powder；Screening, obtains stand-by alloy powder；Classification, by stand-by alloy powder according to particle size classification；Proportion, sorted alloy powder is matched with SiC particulate, obtains mixture；Mixture is placed in jacket, sealing；It is heated to 350-550 DEG C, keeps the temperature 30-120min, obtains jacket embryo material；Jacket embryo material is squeezed using extruder, primary push rod rate is less than 1mm/s, extrusion ratio 10-25, obtains extruded bars and does not carry out re melting process to alloy powder, reduces energy consumption, reduce environmental pollution.The production cost in injection molding preparation process is reduced, the pollution of injection molding preparation process is reduced.The raw material of ordinary powder metallurgy is mostly that several powder mix, and there is the uneven risk of mixing, and can prepare the uniform alloy powder of ingredient using spray forming technology, and the proportion without carrying out raw material mixes.
Description
Technical field
The invention belongs to preparation process of aluminium alloy technical field more particularly to the preparation processes of aluminium alloy.
Background technique
The aluminium alloy of Al-Zn-Mg-Cu series, with the spy that its intensity is high, density is low, good corrosion resistance and processing performance are good
Property, it has a wide range of applications in fields such as nuclear industry, rocket high-strength structure part, airframe and wingbars, gradually develops
Indispensable high performance material in terms of for aerospace.7055 aluminium alloys are current mature boards as Typical Representative therein
The highest aluminium alloy of alloy content highest, intensity in number has the title of " trump aluminium alloy ".Meanwhile it is particle reinforced aluminium-based compound
Material has density small, and specific strength, specific stiffness are high, and shear strength is high, and thermal expansion coefficient is low, thermal stability and thermally conductive, electric conductivity
Can good and wear-resistant wear-resisting property and resistance to organic liquid and solvent corrode the series of advantages such as excellent.Therefore, particle-reinforced aluminum
Based composites have a wide range of applications in each economic field, and by most attention.
Spray forming technology has the characteristics that quickly to solidify, and 7055 aluminum alloy materials using technology preparation have ingredient
Uniformly, without gross segregation, fine microstructures and the second advantages such as mutually tiny, alloy can be made to obtain excellent comprehensive performance.But
During being injected into shape for 7055 aluminium alloy ingot material, inevitably generates and take measurements in 10-90 μm of model greatly
Enclose interior alloy powder product.But the alloy powder is there are surface oxidation, particle diameter distribution is wide and pellet hardness is biggish asks
Topic is at present as foundry returns to the processing mode of powder, and this method is melted into the powder of solidification forming again
Molten aluminum not only causes the pollution of a large amount of wastes and environment of the energy, also adds production cost.As injection forming industry is closely several
The rapid development in year, scope of the enterprise is also increasing, and the yield of powder is necessarily caused to continue to increase, therefore there is an urgent need to a kind of new
Technique rationally utilizes generated powder in stage of spray forming process, adapts to this requirement of energy-saving and emission-reduction drops.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of preparation processes of aluminium alloy.For the reality to disclosure
The some aspects for applying example have a basic understanding, and simple summary is shown below.The summarized section is not extensive overview,
It is not intended to identify key/critical component or describes the protection scope of these embodiments.Its sole purpose is with simple shape
Some concepts are presented in formula, in this, as the preamble of following detailed description.
The present invention adopts the following technical scheme:
In some alternative embodiments, the preparation process of aluminium alloy, includes the following steps:
S1: alloy powder is collected；
S2: screening obtains stand-by alloy powder；
S3: classification, by stand-by alloy powder according to particle size classification；
S4: proportion matches sorted alloy powder and SiC particulate, obtains mixture；
S5: mixture is placed in jacket, sealing；
S6: being heated to 350-550 DEG C, keeps the temperature 30-120min, obtains jacket embryo material；
S7: jacket embryo material is squeezed using extruder, primary push rod rate is less than 1mm/s, and extrusion ratio 10-25 is squeezed
Bar.
Wherein, the source of alloy powder is generated alloy powder during aluminium alloy injection molding in the S1.
Wherein, the step of aluminium alloy injection molding are as follows:
S001: by mass percentage, pressing 7.6-8.4%Zn, 1.8-2.3%Mg, 2.0-2.6%Cu for alloying element,
The ratio that surplus is Al mixes；
S002: melting is carried out using intermediate frequency furnace, smelting temperature is 600-900 DEG C；
S003: degasification slagging-off；
S004: spray treatment, when the spray treatment, with nitrogen as atomization gas and protection gas, the spray angle of inclining of nozzle
It is 25-35 °, atomization temperature is 700-950 DEG C, atomizing pressure 0.5-0.9MPa；
S005: powder caused by during the spray treatment is the alloy powder.
Wherein, screening selects 300 mesh and the explosion-proof screening machine of 800 purposes to be sieved in the step S2.
Wherein, in the step S3, stand-by alloy powder is divided into: the first kind, the second class, third class；The first kind
Partial size be to be less than or equal to 20 μm greater than 10 μm, the partial size of second class is to be less than or equal to 50 μm greater than 20 μm, the third
The diameter of class is greater than 50 μm.
Wherein, the ratio of the proportion in the step S4 are as follows: by weight, the first kind, the second class, third class and
The weight ratio of SiC particulate is 3:1:1:1.
Wherein, in the step S5, jacket is the fine aluminium jacket of wall thickness 2-6mm.
Wherein, after mixture is placed in jacket by the step S5, using vacuum pump at 100-420 DEG C, 12- is vacuumized
20h, then be sealed.
The utility model has the advantages that not carrying out re melting process to alloy powder brought by of the invention, energy consumption is reduced, is reduced
Environmental pollution.The production cost in injection molding preparation process is reduced, the pollution of injection molding preparation process is reduced.Ordinary powder
The raw material of metallurgy is mostly that several powder mix, and there is the uneven risk of mixing, and can be prepared using spray forming technology
The uniform alloy powder of ingredient, the proportion without carrying out raw material mix.
For the above and related purposes, one or more embodiments include being particularly described below and in claim
In the feature that particularly points out.Certain illustrative aspects are described in detail in the following description and the annexed drawings, and its instruction is only
Some modes in the utilizable various modes of the principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be all such aspects to be included and they
Be equal.
Detailed description of the invention
Fig. 1 is wrapping structure schematic diagram in the present invention.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.
In some illustrative embodiments, the preparation process of aluminium alloy, includes the following steps:
S1: alloy powder is collected；Alloy powder is generated alloy powder during aluminium alloy injection molding, the aluminium
The step of alloy injection molding are as follows:
S001: by mass percentage, pressing 7.6-8.4%Zn, 1.8-2.3%Mg, 2.0-2.6%Cu for alloying element,
The ratio that surplus is Al mixes；
S002: melting is carried out using intermediate frequency furnace, smelting temperature is 600-900 DEG C；
S003: solution need to remove the gred by degasification；
S004: spray treatment, when the spray treatment, with nitrogen as atomization gas and protection gas, the spray angle of inclining of nozzle
It is 25-35 °, atomization temperature is 700-950 DEG C, atomizing pressure 0.5-0.9MPa；
S005: 7055 alloy powders generated during to be sprayed when being cooled to room temperature in closed equipment, start to be prevented
Oxidation anti-moisture absorption collection is sealed up for safekeeping.7055 powder caused by during the spray treatment are the alloy powder.
S2: under the protection of nitrogen, being screened, and larger-size particle or flaky substance in powder are screened out.It obtains
Stand-by alloy powder, screening select 300 mesh and the explosion-proof screening machine of 800 purposes to be sieved.
S3: classification, by stand-by alloy powder according to particle size classification；Specific mode classification are as follows: be divided into stand-by alloy powder:
The first kind, the second class, third class；The partial size of the first kind is to be less than or equal to 20 μm greater than 10 μm, the partial size of second class
To be less than or equal to 50 μm greater than 20 μm, the diameter of the third class is greater than 50 μm.
S4: proportion matches sorted alloy powder, by weight, the first kind, the second class, third class and SiC
The weight ratio of particle is 3:1:1:1, is placed in V-type blender and mixes 5h, obtains mixture；SiC particulate diameter is 20-50 μ
m。
S5: as shown in Figure 1, mixture is placed in jacket, jacket is the fine aluminium jacket of wall thickness 2-6mm.In the upper of jacket
Lid 1 drills out the hole diameter about 10mm, the tubule 2 of length of burn-oning 500-1500mm, so as to later period vacuumize process.Existed using vacuum pump
At 100-420 DEG C, connecting hole 2 carries out vacuumizing 12-20h, and tubule 2 is heated, and forges certain length with hammer, tubule is truncated
2, fracture is sealed with welding machine.
S6: being heated to 350-550 DEG C, keeps the temperature 30-120min, obtains jacket embryo material；
S7: squeezing jacket embryo material using extruder, and extrusion cylinder is heated to 200-500 DEG C, and primary push rod rate is less than 1mm/s,
Extrusion ratio is 10-25, obtains extruded bars.Extruded bars become any by processes such as post-processings such as polishing, polishing, cutting
Required shape.
It should also be appreciated by one skilled in the art that various illustrative logical boxs, mould in conjunction with the embodiments herein description
Electronic hardware, computer software or combinations thereof may be implemented into block, circuit and algorithm steps.In order to clearly demonstrate hardware and
Interchangeability between software surrounds its function to various illustrative components, frame, module, circuit and step above and carries out
It is generally described.Hardware is implemented as this function and is also implemented as software, depends on specific application and to entire
The design constraint that system is applied.Those skilled in the art can be directed to each specific application, be realized in a manner of flexible
Described function, still, this realization decision should not be construed as a departure from the scope of protection of this disclosure.
Claims (8)
1. the preparation process of aluminium alloy, which comprises the steps of:
S1: alloy powder is collected；
S2: screening obtains stand-by alloy powder；
S3: classification, by stand-by alloy powder according to particle size classification；
S4: proportion matches sorted alloy powder and SiC particulate, obtains mixture；
S5: mixture is placed in jacket, sealing；
S6: being heated to 350-550 DEG C, keeps the temperature 30-120min, obtains jacket embryo material；
S7: squeezing jacket embryo material using extruder, and primary push rod rate is less than 1mm/s, extrusion ratio 10-25, obtains extruded bars.
2. the preparation process of aluminium alloy as described in claim 1, which is characterized in that the source of alloy powder is aluminium in the S1
Alloy powder caused by during alloy injection molding.
3. the preparation process of aluminium alloy as claimed in claim 2, which is characterized in that the step of the aluminium alloy injection molding
Are as follows:
S001: by mass percentage, alloying element is pressed into 7.6-8.4%Zn, 1.8-2.3%Mg, 2.0-2.6%Cu, surplus
It is mixed for the ratio of Al；
S002: melting is carried out using intermediate frequency furnace, smelting temperature is 600-900 DEG C；
S003: degasification slagging-off；
S004: spray treatment, when the spray treatment, with nitrogen as atomization gas and protection gas, the spray angle of inclining of nozzle is 25-
35 °, atomization temperature is 700-950 DEG C, atomizing pressure 0.5-0.9MPa；
S005: powder caused by during the spray treatment is the alloy powder.
4. the preparation process of aluminium alloy as claimed in claim 3, which is characterized in that 300 mesh are selected in screening in the step S2
And 800 the explosion-proof screening machine of purpose sieved.
5. the preparation process of aluminium alloy as claimed in claim 4, which is characterized in that in the step S3, by stand-by alloyed powder
End is divided into: the first kind, the second class, third class；The partial size of the first kind is to be less than or equal to 20 μm greater than 10 μm, second class
Partial size be to be less than or equal to 50 μm greater than 20 μm, the diameter of the third class is greater than 50 μm.
6. the preparation process of aluminium alloy as claimed in claim 5, which is characterized in that the ratio of the proportion in the step S4
Example are as follows: by weight, the first kind, the second class, the weight ratio of third class and SiC particulate are 3:1:1:1.
7. the preparation process of aluminium alloy as claimed in claim 6, which is characterized in that in the step S5, jacket is wall thickness 2-
The fine aluminium jacket of 6mm.
8. the preparation process of aluminium alloy as claimed in claim 7, which is characterized in that mixture is placed in jacket by the step S5
In after, using vacuum pump at 100-420 DEG C, vacuumize 12-20h, then be sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558223.4A CN109487105A (en) | 2018-12-19 | 2018-12-19 | The preparation process of aluminium alloy |
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| CN201811558223.4A CN109487105A (en) | 2018-12-19 | 2018-12-19 | The preparation process of aluminium alloy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076333A (en) * | 2019-04-08 | 2019-08-02 | 江苏豪然新材料有限公司 | Al-Si-Cu-Mg alloy powder hot-pressing sintering method is shaped using injection |
| CN111438362A (en) * | 2020-05-18 | 2020-07-24 | 湖南金马铝业有限责任公司 | Hot extrusion sheath and method for producing preformed piece by using same |
| CN113118443A (en) * | 2021-04-16 | 2021-07-16 | 江苏豪然喷射成形合金有限公司 | Method for preparing bar by using spray-formed high-silicon aluminum alloy powder |
| CN113444905A (en) * | 2021-06-30 | 2021-09-28 | 南京航空航天大学 | Preparation method of AlSi25Cu4Mg material by utilizing spray-formed overspray powder |
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| JPS60177162A (en) * | 1984-02-22 | 1985-09-11 | Hitachi Metals Ltd | Aluminum alloy |
| CN106676342A (en) * | 2016-12-23 | 2017-05-17 | 北京有色金属研究总院 | Aluminum-based blade material for automobile air-condition compressor and preparation method thereof |
| CN106702201A (en) * | 2015-07-30 | 2017-05-24 | 湖南恒裕新材料科技发展有限公司 | Car piston silicon carbide particulate reinforced aluminum matrix composite material and machining process |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60177162A (en) * | 1984-02-22 | 1985-09-11 | Hitachi Metals Ltd | Aluminum alloy |
| CN106702201A (en) * | 2015-07-30 | 2017-05-24 | 湖南恒裕新材料科技发展有限公司 | Car piston silicon carbide particulate reinforced aluminum matrix composite material and machining process |
| CN106676342A (en) * | 2016-12-23 | 2017-05-17 | 北京有色金属研究总院 | Aluminum-based blade material for automobile air-condition compressor and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 廖健等: "《铝合金挤压材生产与应用》", 31 March 2018, 冶金工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076333A (en) * | 2019-04-08 | 2019-08-02 | 江苏豪然新材料有限公司 | Al-Si-Cu-Mg alloy powder hot-pressing sintering method is shaped using injection |
| CN111438362A (en) * | 2020-05-18 | 2020-07-24 | 湖南金马铝业有限责任公司 | Hot extrusion sheath and method for producing preformed piece by using same |
| CN113118443A (en) * | 2021-04-16 | 2021-07-16 | 江苏豪然喷射成形合金有限公司 | Method for preparing bar by using spray-formed high-silicon aluminum alloy powder |
| CN113444905A (en) * | 2021-06-30 | 2021-09-28 | 南京航空航天大学 | Preparation method of AlSi25Cu4Mg material by utilizing spray-formed overspray powder |
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