CN103409666B - A kind of electrolytic aluminium liquid produces the technical process of aluminium alloy - Google Patents
A kind of electrolytic aluminium liquid produces the technical process of aluminium alloy Download PDFInfo
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- CN103409666B CN103409666B CN201310183849.2A CN201310183849A CN103409666B CN 103409666 B CN103409666 B CN 103409666B CN 201310183849 A CN201310183849 A CN 201310183849A CN 103409666 B CN103409666 B CN 103409666B
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Abstract
The present invention relates to a kind of aluminium alloy technical process, more specifically a kind of electrolytic aluminium liquid produces the technical process of aluminium alloy, it comprises the steps: that electrolytic aluminium liquid injects smelting furnace, add aluminium ingot cooling, stokehold sample analysis ingredient, temperature is regulated to add other components, induction stirring, first time refining, removing aluminium liquid surface scum, converter, second time refining, removing aluminium liquid surface scum, stokehold sample analysis ingredient, composition is qualified rear standing, purification, grain refining, ceramic filter plate filters, heat top water cooling casting, be up to the standards, sawing, homogeneous, packaging warehouse-in.The invention has the beneficial effects as follows: by the control of composition and the coordinative role of each processing step, overcome the problem that when utilizing electrolytic aluminium liquid direct production aluminium alloy, aluminium alloy quality is low, cost is low, pollute little aluminum alloy production process, the aluminium alloy produced more high-quality, save manpower, shortened technical process, more meet the development of society and the development of enterprise.
Description
Technical field
The present invention relates to a kind of aluminium alloy technical process, more specifically a kind of electrolytic aluminium liquid produces the technical process of aluminium alloy.
Background technology
Aluminium alloy take aluminium as the alloy general name of base.Main alloy element has copper, silicon, magnesium, zinc, manganese, and secondary alloying element has nickel, iron, titanium, chromium, lithium etc.Aluminium alloy density is low, but strength ratio is higher, close to or exceed high-quality steel, plasticity is good, can be processed into various section bar, has excellent electroconductibility, thermal conductivity and corrosion stability, industrially widely uses, and usage quantity is only second to steel.Along with science and technology and the develop rapidly of industrial economy in recent years, increasing to the demand of Welded structural part, make the Research on Weldability of aluminium alloy also thereupon deeply.The widespread use of aluminium alloy facilitates the development of aluminum alloy solder technology, and the development of welding technique has simultaneously expanded again the Application Areas of aluminium alloy, the therefore welding technique of aluminium alloy just one of focus becoming research.
The density of fine aluminium is little (ρ=2.7g/cm3), is approximately 1/3 of iron, fusing point low (660 DEG C), and aluminium is face-centred cubic structure, therefore has very high plasticity (δ: 32 ~ 40%, ψ: 70 ~ 90%), is easy to processing, can be made into various section bar, sheet material.Corrosion resistance is good; But the intensity of fine aluminium is very low, as-annealed condition σ b value is about 8kgf/mm2, therefore should not make structured material.By long-term production practice and scientific experiment, people are gradually to add alloying element and to use the methods such as thermal treatment to carry out reinforced aluminum, and this just obtains a series of aluminium alloy.
The alloy adding the formation of certain element can also have higher intensity while the advantages such as maintenance fine aluminium light weight, and σ b value can reach 24 ~ 60kgf/mm2 respectively.Its " specific tenacity " (ratio σ b/ ρ of intensity and proportion) is made to surpass a lot of steel alloy like this, become desirable structured material, be widely used in the aspects such as machinofacture, Transport Machinery, power machine and aircraft industry, the fuselage, covering, pneumatic plant etc. of aircraft are normal with aluminium alloy manufacture, to alleviate deadweight.Adopt aluminium alloy to replace the welding of steel plate materials, structural weight can alleviate more than 50%.
The standby general employing aluminium ingot remelting process of traditional aluminum alloy, change processing method in fusion process, consume a large amount of energy, metal loss is large, the problems such as severe contamination are caused to environment simultaneously, therefore a kind of flow process that can directly use electrolytic aluminium liquid to produce aluminium alloy is needed, and the production process of electrolytic aluminum mainly does ionogen with cryolite-alumina, carbon materials does electrode, ionogen problem is generally between 950-970 DEG C, therefore electrolytic aluminium liquid problem also has higher temperature, and the refining temperature of aluminium liquid only needs 700-800 DEG C, temperature is improper and less from fat crystal nucleus, easily the tissue defects such as coarse grains are caused during casting, inevitably ionogen is sucked when vacuum ladle draws electrolytic aluminium liquid simultaneously, and the oxidation of aluminium, result in oxide inclusion in electrolytic aluminium liquid more, and due to temperature higher, hydrogen has higher saturated content in aluminium liquid, therefore in electrolytic aluminium liquid from a large amount of hydrogen, in electrolytic aluminium liquid, the content of Fe and Si is also larger simultaneously, the quality product of following process is had a strong impact on, therefore a kind of technical process that can directly utilize electrolytic aluminium liquid to produce aluminium alloy is needed.
Summary of the invention
For above deficiency, the invention provides a kind of technical process that can directly utilize electrolytic aluminium liquid to produce aluminium alloy, by in flow process to the control of composition, and the coordinative role of each processing step, the aluminium alloy finally obtained is met the requirements, overcomes the defect of electrolytic aluminium liquid direct production aluminium alloy.
The present invention is achieved by the following technical solutions:
Electrolytic aluminium liquid produces the technical process of aluminium alloy, comprises the steps: that electrolytic aluminium liquid injects smelting furnace, adds aluminium ingot cooling, stokehold sample analysis ingredient, other components, induction stirring, first time refining, removing aluminium liquid surface scum, converter, second time refining, removing aluminium liquid surface scum, stokehold sample analysis ingredient, composition qualifiedly to leave standstill afterwards, purification, grain refining, ceramic filter plate filters, heat pushes up water cooling casting, be up to the standards, sawing, homogeneous, packaging are put in storage to regulate temperature to add.
Above-mentionedly add 40% of aluminium ingot >=aluminium liquid quality, composition analysis is carried out to the aluminium ingot added, the strict content controlling iron.
Above-mentioned add aluminium ingot cooling electrolytic aluminium liquid temperature is down to 750-800 DEG C.
Above-mentioned first time refining and second time refining adopt spraying powder refining technique in stove, and gases used is argon gas, and traditional injection refining adopts argon gas and nitrogen mixture to dust, and the present invention only uses argon gas, better effects if, and degasification, slagging-off effect improve 10%.
Above-mentioned first time, refining temperature was 740-750 DEG C, refining time 15-20 minute, described second time refining temperature is 705-710 DEG C, refining time 5-10 minute, second time refining is used for the fine setting of composition, underproof product is analyzed for the stokehold sample carried out thereafter adjust, make it meet the demands.
Above-mentioned first time refining refining agent used comprises the lower component of group by mass percentage: NaCl:45-70%, CaF
2: 1-5%, Na
2sO
4: 1-5%, Na
2siF
6: 15-25%, Na
3alF
6: 5-23%.
Above-mentioned first time refining refining agent used comprises the lower component of group by mass percentage: NaCl:45-70%, CaF
2: 1-5%, Na
2sO
4: 1-5%, Na
2siF
6: 15-25%, Na
3alF
6: 5-23%.
The qualified rear standing time of repose of mentioned component is >=30 minutes, carries out leaving standstill remove the gas in aluminium liquid and impurity.
Upper ceramic filter plate filters and adopts two-stage filtration, and it is 30-40 order that the first step filters order number, and it is 50-60 order that order number is filtered in the second stage, after two-stage filtration, can ensure degree of purification and the fine degree of aluminium liquid.
The invention has the beneficial effects as follows: by the control of composition and the coordinative role of each processing step, overcome the problem that when utilizing electrolytic aluminium liquid direct production aluminium alloy, aluminium alloy quality is low, provide a kind of processing method of producing aluminium alloy, lower than traditional remelting process cost, pollute little, the aluminium alloy produced more high-quality, has saved manpower, shorten technical process, more meet the development of society and the development of enterprise.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described, so that those skilled in the art better can understand the present invention, but therefore do not limit the present invention.
Processing step is: electrolytic aluminium liquid injects smelting furnace, adds aluminium ingot cooling, stokehold sample analysis ingredient, other components, induction stirring, first time refining, removing aluminium liquid surface scum, converter, second time refining, removing aluminium liquid surface scum, stokehold sample analysis ingredient, composition qualifiedly to leave standstill afterwards, purification, grain refining, ceramic filter plate filters, heat pushes up water cooling casting, be up to the standards, sawing, homogeneous, packaging are put in storage to regulate temperature to add.
Embodiment 1
Utilize electrolytic aluminum direct production 2024 aluminium alloy
Its processing condition are: the aluminium ingot adding aluminium liquid quality 40%, cools to 750 DEG C, adds manganese, chromium, copper raw material by component requirements; Adjustment temperature adds zinc to 740-750 DEG C; 750 DEG C add magnesium;
Refining temperature 740 DEG C for the first time, refining time is 20 minutes; Second time refining temperature 705 DEG C, refining time is 10 minutes; Twice refining all adopts in stove blows powder refining, and gases used is argon gas.
First time and second time refining agent used are: NaCl:60 %, CaF
2: 3%, Na
2sO
4: 2%, Na
2siF
6: 20%, Na
3alF
6: 15%.
Time of repose 30 minutes; It is 40 orders that the first step filters order number, and it is 50 orders that order number is filtered in the second stage.Gained 2024 al alloy component is in table 1, and performance is in table 2.
Embodiment 2
Utilize electrolytic aluminum direct production 2024 aluminium alloy
Its processing condition are: the aluminium ingot adding aluminium liquid quality 30%, cools to 750 DEG C, adds manganese, chromium, copper raw material by component requirements; Adjustment temperature adds zinc to 740-750 DEG C; 750 DEG C add magnesium;
Refining temperature 740 DEG C for the first time, refining time is 20 minutes; Second time refining temperature 705 DEG C, refining time is 10 minutes; Twice refining all adopts in stove blows powder refining, and gases used is argon gas.
First time and second time refining agent used are: NaCl:60 %, CaF
2: 3%, Na
2sO
4: 2%, Na
2siF
6: 20%, Na
3alF
6: 15%.
Time of repose 30 minutes; It is 40 orders that the first step filters order number, and it is 50 orders that order number is filtered in the second stage.Gained 2024 al alloy component is in table 1, and performance is in table 2.
Embodiment 3
Utilize electrolytic aluminum direct production 2024 aluminium alloy
Its processing condition are: the aluminium ingot adding aluminium liquid quality 40%, cools to 750 DEG C, adds manganese, chromium, copper raw material by component requirements; Adjustment temperature adds zinc to 740-750 DEG C; 750 DEG C add magnesium;
Refining temperature 740 DEG C for the first time, refining time is 20 minutes; Second time refining temperature 705 DEG C, refining time is 10 minutes; Twice refining all adopts in stove blows powder refining, and gases used is argon gas.
First time and second time refining agent used are: NaCl:70%, CaF
2: 4%, Na
2sO
4: 3%, Na
2siF
6: 10%, Na
3alF
6: 13%.
Time of repose 30 minutes; It is 40 orders that the first step filters order number, and it is 50 orders that order number is filtered in the second stage.Gained 2024 al alloy component is in table 1, and performance is in table 2.
Embodiment 4
Utilize electrolytic aluminum direct production 2024 aluminium alloy
Its processing condition are: the aluminium ingot adding aluminium liquid quality 40%, cools to 750 DEG C, adds manganese, chromium, copper raw material by component requirements; Adjustment temperature adds zinc to 740-750 DEG C; 750 DEG C add magnesium;
Refining temperature 750 DEG C for the first time, refining time is 20 minutes; Second time refining temperature 710 DEG C, refining time is 10 minutes; Twice refining all adopts in stove blows powder refining, and gases used is argon gas.
First time and second time refining agent used are: NaCl:60 %, CaF
2: 3%, Na
2sO
4: 2%, Na
2siF
6: 20%, Na
3alF
6: 15%.
Time of repose 30 minutes; It is 40 orders that the first step filters order number, and it is 50 orders that order number is filtered in the second stage.Gained 2024 al alloy component is in table 1, and performance is in table 2.
Embodiment 5
Utilize electrolytic aluminum direct production 5083 aluminium alloy
Its processing condition are: the aluminium ingot adding aluminium liquid quality 40%, cools to 750 DEG C, adds manganese, chromium, copper raw material by component requirements; Adjustment temperature adds zinc to 740-750 DEG C; 750 DEG C add magnesium;
Refining temperature 740 DEG C for the first time, refining time is 15 minutes; Second time refining temperature 705 DEG C, refining time is 5 minutes; Twice refining all adopts in stove blows powder refining, and gases used is argon gas.
First time and second time refining agent used are: NaCl:60 %, CaF
2: 3%, Na
2sO
4: 2%, Na
2siF
6: 20%, Na
3alF
6: 15%.
Time of repose 30 minutes; It is 40 orders that the first step filters order number, and it is 50 orders that order number is filtered in the second stage.Gained 5083 al alloy component is in table 1, and performance is in table 2.
Embodiment 6
Utilize electrolytic aluminum direct production 7050 aluminium alloy
Its processing condition are: the aluminium ingot adding aluminium liquid quality 40%, cools to 750 DEG C, adds manganese, chromium, copper raw material by component requirements; Adjustment temperature adds zinc to 740-750 DEG C; 750 DEG C add magnesium;
Refining temperature 740 DEG C for the first time, refining time is 18 minutes; Second time refining temperature 705 DEG C, refining time is 8 minutes; Twice refining all adopts in stove blows powder refining, and gases used is argon gas.
First time and second time refining agent used are: NaCl:60 %, CaF
2: 3%, Na
2sO
4: 2%, Na
2siF
6: 20%, Na
3alF
6: 15%.
Time of repose 30 minutes; It is 40 orders that the first step filters order number, and it is 50 orders that order number is filtered in the second stage.Gained 7075 al alloy component is in table 1, and performance is in table 2.
From upper table 1, according to technical process of the present invention, the satisfactory aluminium alloy of composition can be produced, can find out according to table 2, the performance of the aluminium alloy that technical process according to the present invention makes meets national regulation completely, and according to the coordinative role of each step in flow process of the present invention, make the performances such as the tensile strength of gained aluminium alloy slightly improve, the making for aluminium alloy provides a kind of new method.
Claims (1)
1. electrolytic aluminium liquid produces a technical process for aluminium alloy, comprises the steps: that electrolytic aluminium liquid injects smelting furnace, add aluminium ingot cooling, stokehold sample analysis ingredient, temperature is regulated to add other components, induction stirring, first time refining, removing aluminium liquid surface scum, converter, second time refining, removing aluminium liquid surface scum, stokehold sample analysis ingredient, composition is qualified rear standing, purification, grain refining, ceramic filter plate filters, heat top water cooling casting, be up to the standards, sawing, homogeneous, packaging warehouse-in, describedly add 40% of aluminium ingot>=aluminium liquid quality, described in add aluminium ingot cooling electrolytic aluminium liquid temperature be down to 750-800 DEG C, described first time refining and second time refining adopt spraying powder refining technique in stove, gases used is argon gas, described first time refining temperature be 740-750 DEG C, refining time 15-20 minute, described second time refining temperature is 705-710 DEG C, refining time 5-10 minute, described first time refining refining agent used comprises lower component: the NaCl:45-70% of group by mass percentage, CaF
2: 1-5%, Na
2sO
4: 1-5%, Na
2siF
6: 15-25%, Na
3alF
6: 5-23%, the qualified rear standing time of repose of described composition is>=30 minutes, and ceramic filter plate filters and adopts two-stage filtration, and it is 30-40 order that the first step filters order number, and it is 50-60 order that order number is filtered in the second stage.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103695687B (en) * | 2013-12-20 | 2016-02-17 | 广西博士海意信息科技有限公司 | Aluminium alloy smelting refining agent |
| CN106498203A (en) * | 2016-10-17 | 2017-03-15 | 山东创辉新材料科技有限公司 | A kind of preparation technology of superconduction aluminium bar |
| CN108950604A (en) * | 2018-08-31 | 2018-12-07 | 营口忠旺铝业有限公司 | A kind of aluminum electrolysis technology |
| CN109735873B (en) * | 2019-03-23 | 2021-04-09 | 曲靖云铝淯鑫铝业有限公司 | Production process of high-quality aluminum ingot |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254624A (en) * | 1998-11-20 | 2000-05-31 | 西北铝加工厂 | Method and technique for producing aluminium foils by direct casting and rolling of electrolytic aluminium liquid |
| CN101967565A (en) * | 2010-10-28 | 2011-02-09 | 湖南晟通科技集团有限公司 | Refining agent for aluminum and aluminum alloy |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254624A (en) * | 1998-11-20 | 2000-05-31 | 西北铝加工厂 | Method and technique for producing aluminium foils by direct casting and rolling of electrolytic aluminium liquid |
| CN101967565A (en) * | 2010-10-28 | 2011-02-09 | 湖南晟通科技集团有限公司 | Refining agent for aluminum and aluminum alloy |
Non-Patent Citations (1)
| Title |
|---|
| 电解铝液生产铝合金扁锭工艺技术研究与实践;孙建华;《铝加工》;20050228(第1期);第47-49页，第58页 * |
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Effective date of registration: 20171115 Address after: 256200 North Shandong city of Binzhou province Zouping County Road East first innovation industrial park Patentee after: SHANDONG INNOVATION METAL TECHNOLOGY Co.,Ltd. Address before: 256200 North Shandong city of Binzhou province Zouping County Development Zone East first ring Patentee before: Shandong Innovation Metal Technology Joint Stock Co.,Ltd. |
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Denomination of invention: A process flow for producing aluminum alloy from electrolytic aluminum liquid Effective date of registration: 20211220 Granted publication date: 20150805 Pledgee: Agricultural Bank of China Limited Zouping sub branch Pledgor: SHANDONG INNOVATION METAL TECHNOLOGY Co.,Ltd. Registration number: Y2021980015347 |
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Date of cancellation: 20221231 Granted publication date: 20150805 Pledgee: Agricultural Bank of China Limited Zouping sub branch Pledgor: SHANDONG INNOVATION METAL TECHNOLOGY Co.,Ltd. Registration number: Y2021980015347 |