CN107955887A - A kind of high-magnesium aluminum alloy cleaning molten treatment process - Google Patents
A kind of high-magnesium aluminum alloy cleaning molten treatment process Download PDFInfo
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- CN107955887A CN107955887A CN201710955023.1A CN201710955023A CN107955887A CN 107955887 A CN107955887 A CN 107955887A CN 201710955023 A CN201710955023 A CN 201710955023A CN 107955887 A CN107955887 A CN 107955887A
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- refining
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
Abstract
An embodiment of the present invention provides a kind of high-magnesium aluminum alloy cleaning molten treatment process, it includes：Electrolytic aluminium liquid pre-processes；Refining；Online degasification slagging-off.A kind of high-magnesium aluminum alloy cleaning molten treatment process provided in an embodiment of the present invention, first pre-processes electrolytic aluminium liquid when going out aluminium using block aluminum fluoride, removes alkali metal and the part slag inclusions such as Na；Refine the further alkali metal such as removal Na by using PRO particles refining agent in molten guarantor's stove and degasification removes the gred.Using PRO particles refining agent is except alkali metal such as Na and degasification slagging-off effect is good and Mg losses are small, it is small to pollute.Production method is produced suitable for big batch metaplasia.
Description
Technical field
The present invention relates to aluminium melt purifying field, more particularly to a kind of high-magnesium aluminum alloy cleaning molten treatment process.
Background technology
A1-Mg alloys are small with density, and the high and excellent corrosion resisting property of specific strength, welding performance, are widely used in navigating
The fields such as sky, space flight, ship.With the development of welding technique, aluminium and Welded structure are widely used to civilian and army
Work field, such as various pressures vessels for the chemical industry, the vehicles, naval vessel, aircraft, rocket, space probe, and bullet train, subway
Train, urban light rail are the industries that state key investment is supported to help.High-magnesium aluminum alloy, such as 5356 aluminium alloys have medium strong
Degree, corrosion resistance, processing performance and good welding performance；Meanwhile it is that aluminium alloy Midst density is minimum, corrosion resistance is highest.Due to this
The compatibility of alloy and most of acieral is good, and the intensity and transportation performance having had, are a kind of general aluminum-based filler materials
Material, therefore be usually used in producing aluminium alloy welding wire.
Extensive use of the quality of welding wire to Welded structure has material impact, and aluminium alloy welding wire internal soundness is very
Primary link, that is, purifying aluminium alloy melt of processing is depended in big degree.Clean-up effect is bad, can not produce qualification
Product.During aluminium alloy smelting, gas, field trash and metal impurities in melt etc., can enable aluminum alloy to it is middle generation stomata,
Loose, crackle, the defects of being mingled with., then can be in the subsequent production of aluminium alloy if purification does not reach standard, such as rolling, extruding, draw
The problem of the causing poor product quality and low lumber recovery in technique such as pull out and be heat-treated, and then product use is left potential hidden
Suffer from.In addition, in the melt existing such as Na alkali metal in addition to the brittleness of increase aluminium alloy, can also reduce fluidity of molten and
Influence castability.
Patent《A kind of method that electrolytic aluminium liquid removes alkali metal》(201210223948.4) the present invention provides a kind of electricity
The method that molten aluminum removes alkali metal is solved, the inert gas for being mixed with aluminum fluoride powder is filled with into electrolytic aluminium liquid, gas replenishment process is at the same time
Electrolytic aluminium liquid is stirred, except alkali gold in the electrolytic aluminium liquid detected before alkali process according to the content of the aluminum fluoride powder
Belong to concentration conversion.The invention has the advantages that taking what inert gas added aluminum fluoride to remove alkali metal process, can directly exist
Alkali metal in line removal electrolytic aluminium liquid is, it can be achieved that the alkali metal content of aluminum melt<5ppm, is better than European products standards
Regulation requires, and can meet high-grade, precision and advanced aluminium alloy processing performance requirement, meets that producing high-end aluminium processes material to high-quality aluminum melt
Purified treatment requirement, and the chlorine of most enterprises' uses at present can be avoided except safety existing for alkali metal technology and environmental protection are hidden
Suffer from.
The alkali metal in electrolyte is removed using powdered fluorinated aluminium injection method in the patent, simply electrolyte is carried out
Handle and production efficiency is than relatively low.My company uses block aluminum fluoride to carry out treatment effeciency to electrolyte during aluminium is gone out
It is high.
Patent《A kind of efficient aluminium solution purification method》(CN 106367610A) the invention discloses a kind of efficient aluminium
Solution purification method, by the way that the purification of aluminium solution is divided into removal of impurities and the progress of two step of degassing, degassing after first cleaning, efficiently solves aluminium
Hydrogen adsorption in solution substantially increases the efficiency of aluminium solution purification be not easy to be eliminated on oxide inclusion the problem of；It is logical
Cross addition refining solvent to clean, and add coverture, reduce fusing consumption, prevent aluminum solutions from absorbing gas from oven cavity atmosphere
Body；By be passed through nitrogen, chlorine and carbon monoxide mixed gas carry out degassing removal of impurities, chlorine, carbon monoxide and aluminium element it
Between react, generation CO2 and AlCl3 plays bubble-flux mixing refining and acts on, and not only has hydrogen diffusing through into bubble
Journey also has the physics chemical action of bubble surface dross inclusion adsorption, therefore enhances the refining effect of nitrogen, and environmentally protective
It is pollution-free, improve operating condition.
Cleaning molten, the method for proposition and my You Hen great areas of company are carried out using two step of degassing again that first cleans in the patent
Not.
Patent《A kind of preparation method of low H content aerospace aluminium alloy melt》(CN 104212985B), patent
《The purification method of high-power radiator aluminium alloy and its melt》(CN 104233020B) etc. is in stove and online to molten aluminum
Degasification, slagging-off are carried out, the removal not comprising the alkali metal such as electrolyte pretreatment and Na.
The content of the invention
Technical problem in view of the above, an embodiment of the present invention provides a kind of high-magnesium aluminum alloy cleaning molten to handle work
Skill, improves the production efficiency of high-magnesium aluminum alloy melt.
An embodiment of the present invention provides a kind of high-magnesium aluminum alloy cleaning molten treatment process, it includes：
Electrolytic aluminium liquid pre-processes；
Refining；
Online degasification slagging-off.
Preferably, the electrolytic aluminium liquid pretreatment includes：The fluorination aluminium block for being pressed into bulk is put into out aluminium vacuum packet bottom
Different parts, then extract electrolytic aluminium liquid and fluorination aluminium block are placed into after pumping full to vacuum packet, molten aluminum, transport and pour into molten aluminum molten
Protect in stove.
Preferably, the refining includes：Load weighted intermediate alloy is added after skimming and carries out dispensing in molten guarantor's stove and fills
Divide stirring；Temperature control is refined at 720-750 DEG C again, using argon gas spray refining mode, is refined using PRO particles
Agent, dosage 0.5-1.0kg/t-Al, time 20-30 minute, removes surface slag totally after refining；After the completion of refining
Aluminium alloy melt is stood, more than time of repose 20min.
Preferably, the online degasification slagging-off includes：Aluminium alloy component is met the requirements, can in the range of 720-760 DEG C of temperature
Cast；Molten aluminum carries out degasification slagging-off by online refining equipment and filter plant after blow-on eye；Online refining equipment uses
High-purity argon gas degasification, argon gas total flow：2m3/h-4m3/ h, bleed pressure： 0.4MPa-1.5MPa；Graphite rotator normal work turns
Speed：300-400rpm；Filter plant is double-stage filtering, by-pass filtration piece specification 30ppi, secondary filtration piece specification 50ppi.
A kind of high-magnesium aluminum alloy cleaning molten treatment process provided in an embodiment of the present invention, is first being gone out using block aluminum fluoride
Electrolytic aluminium liquid is pre-processed during aluminium, removes alkali metal and the part slag inclusions such as Na；Protected molten in stove by using PRO particles essence
Refining agent, which refine, further removes the alkali metal such as Na and degasification slagging-off.Except alkali metal such as Na and removed using PRO particles refining agent
Gas slagging-off effect is good and Mg losses are small, it is small to pollute.Production method is produced suitable for big batch metaplasia.
Embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, it is proposed that many details, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case of some details being not required in these details.Below to implementing
The description of example is used for the purpose of by showing that the example of the present invention is better understood from the present invention to provide.The present invention never limits
In any concrete configuration set forth below and algorithm, but cover under the premise of without departing from the spirit of the present invention element,
Any modification, replacement and the improvement of component and algorithm.
However, example embodiment can be implemented in a variety of forms, and it is not understood as limited to implementation set forth herein
Mode；On the contrary, these embodiments are provided so that the present invention more comprehensively and completely, and by the design of example embodiment comprehensively
It is communicated to those skilled in the art.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In example.In the following description, there is provided many details fully understand the embodiment of the present invention so as to provide.However,
It will be appreciated by persons skilled in the art that technical scheme can be put into practice without one in the specific detail or more
It is more, or other methods, constituent element, material etc. can be used.In other cases, be not shown in detail or describe known features,
Material or operation are to avoid fuzzy major technique intention of the invention.
Embodiment 1
The embodiment of the present invention provides a kind of high-magnesium aluminum alloy cleaning molten treatment process, it includes：
Preferably, the electrolytic aluminium liquid pretreatment includes：The fluorination aluminium block for being pressed into bulk is put into out aluminium vacuum packet bottom
Different parts, then extract electrolytic aluminium liquid and fluorination aluminium block are placed into after pumping full to vacuum packet, molten aluminum, transport and pour into molten aluminum molten
Protect in stove.
Preferably, the refining includes：Load weighted intermediate alloy is added after skimming and carries out dispensing in molten guarantor's stove and fills
Divide stirring；Temperature control is refined at 740 DEG C again, using argon gas spray refining mode, using PRO particle refining agents, is used
Measure as 0.8kg/t-Al, 28 minutes time, remove surface slag totally after refining；By aluminium alloy melt after the completion of refining
Stand, time of repose 40min.
Preferably, the online degasification slagging-off includes：Aluminium alloy component is met the requirements, can in the range of 720-760 DEG C of temperature
Cast；Molten aluminum carries out degasification slagging-off by online refining equipment and filter plant after blow-on eye；Online refining equipment uses
High-purity argon gas degasification, argon gas total flow：2.5m3/ h, bleed pressure：0.9MPa；Graphite rotator works normally rotating speed：380rpm；
Filter plant is double-stage filtering, by-pass filtration piece specification 30ppi, secondary filtration piece specification 50ppi.
Embodiment 2
The embodiment of the present invention provides a kind of high-magnesium aluminum alloy cleaning molten treatment process, it includes：
Preferably, the electrolytic aluminium liquid pretreatment includes：The fluorination aluminium block for being pressed into bulk is put into out aluminium vacuum packet bottom
Different parts, then extract electrolytic aluminium liquid and fluorination aluminium block are placed into after pumping full to vacuum packet, molten aluminum, transport and pour into molten aluminum molten
Protect in stove.
Preferably, the refining includes：Load weighted intermediate alloy is added after skimming and carries out dispensing in molten guarantor's stove and fills
Divide stirring；Temperature control is refined at 750 DEG C again, using argon gas spray refining mode, using PRO particle refining agents, is used
Measure as 0.9kg/t-Al, 22 minutes time, remove surface slag totally after refining；By aluminium alloy melt after the completion of refining
Stand, time of repose 22min.
Preferably, the online degasification slagging-off includes：Aluminium alloy component is met the requirements, 755 DEG C of temperature can cast；Open
Molten aluminum carries out degasification slagging-off by online refining equipment and filter plant after stove eye；Online refining equipment is removed using high-purity argon gas
Gas, argon gas total flow：2m3/ h, bleed pressure：1.2MPa；Graphite rotator works normally rotating speed：300rpm；Filter plant is double
Level filtering, by-pass filtration piece specification 30ppi, secondary filtration piece specification 50ppi.
Embodiment 3
The embodiment of the present invention provides a kind of high-magnesium aluminum alloy cleaning molten treatment process, it includes：
Preferably, the electrolytic aluminium liquid pretreatment includes：The fluorination aluminium block for being pressed into bulk is put into out aluminium vacuum packet bottom
Different parts, then extract electrolytic aluminium liquid and fluorination aluminium block are placed into after pumping full to vacuum packet, molten aluminum, transport and pour into molten aluminum molten
Protect in stove.
Preferably, the refining includes：Load weighted intermediate alloy is added after skimming and carries out dispensing in molten guarantor's stove and fills
Divide stirring；Temperature control is refined at 720 DEG C again, using argon gas spray refining mode, using PRO particle refining agents, is used
Measure as 0.5kg/t-Al, 20 minutes time, remove surface slag totally after refining；By aluminium alloy melt after the completion of refining
Stand, time of repose 20min.
Preferably, the online degasification slagging-off includes：Aluminium alloy component is met the requirements, temperature 720 can cast；Blow-on
Molten aluminum carries out degasification slagging-off by online refining equipment and filter plant after eye；Online refining equipment uses high-purity argon gas degasification,
Argon gas total flow：2m3/ h, bleed pressure：0.4MPa；Graphite rotator works normally rotating speed：300rpm；Filter plant is twin-stage mistake
Filter, by-pass filtration piece specification 30ppi, secondary filtration piece specification 50ppi.
Embodiment 4
The embodiment of the present invention provides a kind of high-magnesium aluminum alloy cleaning molten treatment process, it includes：
Preferably, the electrolytic aluminium liquid pretreatment includes：The fluorination aluminium block for being pressed into bulk is put into out aluminium vacuum packet bottom
Different parts, then extract electrolytic aluminium liquid and fluorination aluminium block are placed into after pumping full to vacuum packet, molten aluminum, transport and pour into molten aluminum molten
Protect in stove.
Preferably, the refining includes：Load weighted intermediate alloy is added after skimming and carries out dispensing in molten guarantor's stove and fills
Divide stirring；Temperature control is refined at 750 DEG C again, using argon gas spray refining mode, using PRO particle refining agents, is used
Measure as 1.0kg/t-Al, 30 minutes time, remove surface slag totally after refining；By aluminium alloy melt after the completion of refining
Stand, time of repose 30min.
Preferably, the online degasification slagging-off includes：Aluminium alloy component is met the requirements, 760 DEG C of temperature can cast；Open
Molten aluminum carries out degasification slagging-off by online refining equipment and filter plant after stove eye；Online refining equipment is removed using high-purity argon gas
Gas, argon gas total flow：4m3/ h, bleed pressure：1.5MPa；Graphite rotator works normally rotating speed：400rpm；Filter plant is double
Level filtering, by-pass filtration piece specification 30ppi, secondary filtration piece specification 50ppi.
Embodiment 5
The embodiment of the present invention provides a kind of high-magnesium aluminum alloy cleaning molten treatment process, it includes：
Preferably, the electrolytic aluminium liquid pretreatment includes：The fluorination aluminium block for being pressed into bulk is put into out aluminium vacuum packet bottom
Different parts, then extract electrolytic aluminium liquid and fluorination aluminium block are placed into after pumping full to vacuum packet, molten aluminum, transport and pour into molten aluminum molten
Protect in stove.
Preferably, the refining includes：Load weighted intermediate alloy is added after skimming and carries out dispensing in molten guarantor's stove and fills
Divide stirring；Temperature control is refined at 730 DEG C again, using argon gas spray refining mode, using PRO particle refining agents, is used
Measure as 0.6kg/t-Al, 25 minutes time, remove surface slag totally after refining；By aluminium alloy melt after the completion of refining
Stand, time of repose 25min.
Preferably, the online degasification slagging-off includes：Aluminium alloy component is met the requirements, can be carried out in the range of 750 DEG C of temperature
Casting；Molten aluminum carries out degasification slagging-off by online refining equipment and filter plant after blow-on eye；Online refining equipment is using high-purity
Argon gas degasification, argon gas total flow：3m3/ h, bleed pressure：1MPa；Graphite rotator works normally rotating speed：350rpm；Filter plant
For double-stage filtering, by-pass filtration piece specification 30ppi, secondary filtration piece specification 50ppi.
Those skilled in the art will be understood that above-described embodiment is illustrative and not restrictive.In different embodiments
The different technologies feature of middle appearance can be combined, to obtain beneficial effect.Those skilled in the art research specification and
On the basis of claims, it will be understood that and realize the embodiment of other changes of revealed embodiment.
Claims (4)
1. a kind of high-magnesium aluminum alloy cleaning molten treatment process, it includes：
Electrolytic aluminium liquid pre-processes；
Refining；
Online degasification slagging-off.
2. treatment process as claimed in claim 1, it is characterised in that
The refining includes：Load weighted intermediate alloy is added after skimming and carries out dispensing in molten guarantor's stove and is sufficiently stirred；Again will
Temperature control is refined at 720-750 DEG C, using argon gas spray refining mode, uses PRO particle refining agents, dosage 0.5-
1.0kg/t-Al, time 20-30 minute, removes surface slag totally after refining；By aluminium alloy melt after the completion of refining
Stand, more than time of repose 20min.
3. treatment process as claimed in claim 1, it is characterised in that
The electrolytic aluminium liquid pretreatment includes：The fluorination aluminium block for being pressed into bulk is put into out aluminium vacuum packet bottom different parts, so
Electrolytic aluminium liquid is extracted afterwards fluorination aluminium block is placed into after pumping full to vacuum packet, molten aluminum, transport and molten aluminum is poured into molten protect in stove.
4. treatment process as claimed in claim 1, it is characterised in that
The online degasification slagging-off includes：Aluminium alloy component is met the requirements, can be cast in the range of 720-760 DEG C of temperature；Open
Molten aluminum carries out degasification slagging-off by online refining equipment and filter plant after stove eye；Online refining equipment is removed using high-purity argon gas
Gas, argon gas total flow：2m3/h-4m3/ h, bleed pressure：0.4MPa-1.5MPa；Graphite rotator works normally rotating speed：300-
400rpm；Filter plant is double-stage filtering, by-pass filtration piece specification 30ppi, secondary filtration piece specification 50ppi.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710955023.1A CN107955887A (en) | 2017-10-13 | 2017-10-13 | A kind of high-magnesium aluminum alloy cleaning molten treatment process |
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| CN201710955023.1A CN107955887A (en) | 2017-10-13 | 2017-10-13 | A kind of high-magnesium aluminum alloy cleaning molten treatment process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108486435A (en) * | 2018-04-28 | 2018-09-04 | 中铝东南材料院（福建）科技有限公司 | A kind of high flat degree hard disk aluminium alloy base plate and preparation method thereof |
| CN111926199A (en) * | 2020-07-10 | 2020-11-13 | 新疆众和股份有限公司 | Pre-smelting process of electrolytic aluminum liquid |
| CN112981126A (en) * | 2021-04-21 | 2021-06-18 | 中国航发北京航空材料研究院 | Refining method for improving purity of high-alloying hard aluminum alloy melt |
| CN113444931A (en) * | 2021-06-24 | 2021-09-28 | 新疆众和股份有限公司 | Aluminum sheet for neutron detector middle framework and preparation process thereof |
| CN114703390A (en) * | 2022-06-06 | 2022-07-05 | 中国航发北京航空材料研究院 | Refining agent and refining and purifying method of aluminum alloy cast on line by combining refining agent with argon |
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| CN101921939A (en) * | 2010-09-09 | 2010-12-22 | 西南大学 | Method for preparing 5182 big flat ingot with high performance by short flow process |
| CN102899540A (en) * | 2012-08-10 | 2013-01-30 | 广西南南铝加工有限公司 | Super large specification aluminum alloy slab ingot and casting method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921939A (en) * | 2010-09-09 | 2010-12-22 | 西南大学 | Method for preparing 5182 big flat ingot with high performance by short flow process |
| CN102899540A (en) * | 2012-08-10 | 2013-01-30 | 广西南南铝加工有限公司 | Super large specification aluminum alloy slab ingot and casting method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108486435A (en) * | 2018-04-28 | 2018-09-04 | 中铝东南材料院（福建）科技有限公司 | A kind of high flat degree hard disk aluminium alloy base plate and preparation method thereof |
| CN111926199A (en) * | 2020-07-10 | 2020-11-13 | 新疆众和股份有限公司 | Pre-smelting process of electrolytic aluminum liquid |
| CN112981126A (en) * | 2021-04-21 | 2021-06-18 | 中国航发北京航空材料研究院 | Refining method for improving purity of high-alloying hard aluminum alloy melt |
| CN113444931A (en) * | 2021-06-24 | 2021-09-28 | 新疆众和股份有限公司 | Aluminum sheet for neutron detector middle framework and preparation process thereof |
| CN113444931B (en) * | 2021-06-24 | 2022-04-05 | 新疆众和股份有限公司 | Aluminum sheet for neutron detector middle framework and preparation process thereof |
| CN114703390A (en) * | 2022-06-06 | 2022-07-05 | 中国航发北京航空材料研究院 | Refining agent and refining and purifying method of aluminum alloy cast on line by combining refining agent with argon |
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