CN108048679A - A kind of preparation method for the high Fe contents aluminium alloy for refining richness Fe precipitated phases - Google Patents
A kind of preparation method for the high Fe contents aluminium alloy for refining richness Fe precipitated phases Download PDFInfo
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- CN108048679A CN108048679A CN201711454978.5A CN201711454978A CN108048679A CN 108048679 A CN108048679 A CN 108048679A CN 201711454978 A CN201711454978 A CN 201711454978A CN 108048679 A CN108048679 A CN 108048679A
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- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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Abstract
The invention discloses a kind of preparation methods for the high Fe contents aluminium alloy for refining richness Fe precipitated phases, comprise the following steps：(1) aluminum feedstock is added in aluminium melting furnace, heating melts and is warming up to 800~850 DEG C, and addition raw material containing Fe makes Fe contents for 1~2%；(2) melt temperature is down to 730~780 DEG C, adds in refining agent to aluminium alloy melt removal of impurities, degassing processing；(3) added in into aluminium alloy melt one or more in metallic element Mn, Mg, Ca；(4) temperature of aluminium alloy melt is down to 720~750 DEG C, adds in grain refiner；(5) aluminium alloy melt carries out electromagnetic agitation after Metamorphism treatment；(6) by treated, aluminium alloy melt is poured into a mould, and water spray is handled after shell to be solidified.The preparation method of high Fe contents aluminium alloy provided by the invention, can refine rich Fe precipitated phases, improve the wear-resisting and heat resistance of aluminium alloy.
Description
Technical field
The invention belongs to technical field of alloy, and in particular to a kind of system for the high Fe contents aluminium alloy for refining richness Fe precipitated phases
Preparation Method.
Background technology
Iron is considered as a kind of main impurity element always in aluminium alloy (particularly wrought aluminium alloy)；In iron-holder
Coarse pin, sheet brittleness iron phase can be formed in the case of higher, in aluminum alloy organization, such as α-Fe2SiAl8 or β-FeSiAl3
It is equal, the serious effect of isolating is generated to alloy matrix aluminum, under causing the performance such as plasticity, toughness of Al-alloy products apparent
Drop；The increase of Fe contents simultaneously, can be substantially reduced the corrosion resistance of aluminum alloy materials, also make part machinery processing difficulties etc..
But in cast aluminium alloy gold, the increase of Fe contents is conducive to demould, if the form of richness Fe precipitated phases can be controlled, increases amount containing Fe
Be conducive to the manufacturing process of cast aluminium alloy gold.Therefore, effect of the Fe elements in aluminium alloy how is effectively played, is aluminum current
One of hot spot technology existing for alloy manufacturing industry.
Presently relevant technical research mainly to reduce Fe contents as target, including：(1) in aluminium scrap regeneration technology, very
Mostly using melting dilution method, i.e., a certain number of fine aluminium ingots are added in Way of Remelting Scrap Aluminium, are reduced in Fe contents in prescribed limit
On the premise of pass through alloying again and obtain the recycled product with qualified chemical composition.This method needs to consume substantial amounts of fine aluminium
Ingot.(2) elements such as Mn, Cr are added in into the higher aluminium alloy melt of Fe contents, neutralization can be occurred with Fe elements and shape
The precipitated phase larger into density, such as α-Al15(Fe, Mn)3Si2、α-Al15(Fe, Mn, Cr)3Si2Deng, then by gravitational settling,
Rich Fe is separated out molten aluminum by the methods of filtering, achievees the purpose that reduce Fe contents；(3) magnetism between richness Fe phases and aluminium is utilized
The difference of feature, the methods of separation using electromagnetism, by the big portion's removal of the nascent richness Fe phases for being more than 10 μm in aluminium alloy melt, Fe
Content can reduce by 50%.But being extremely limited except Fe efficiency under the conditions of Fe, Si content are relatively low.(4) removed at present in aluminium alloy
The technical study of Fe mostly using boride flux method, utilizes the iron boron such as the Fe element reactions generation Fe2B in boride and melt
Then compound is excluded in by corresponding technological measure outside melt again, can be obtained preferably except Fe rates.
The precipitation strength of second phase particles is to improve the important means of aluminium alloy capability, such as AlCu2、Mg2Si、MgZn2Deng.
In aluminium alloy, coarse sheet precipitated phase is generated when Fe contents are more than 0.3% under normal circumstances；But if it can take certain
The rich Fe precipitated phases of coarse sheet are converted into regular shape, such as spherical, lumps, short and thick column by technological measure, right
The effect of isolating of matrix will eliminate, and if its particle can be promoted tiny and be evenly distributed, will play dispersion-strengtherning
Effect, will be very favorable to the raising of materials'use performance.The present invention is therefore.
The content of the invention
It is an object of the invention to provide a kind of preparation methods for the high Fe contents aluminium alloy for refining richness Fe precipitated phases, can be with
Refine the rich Fe precipitated phases in high Fe contents aluminium alloy.
Based on above-mentioned technical problem, technical solution provided by the invention is：
A kind of preparation method for the high Fe contents aluminium alloy for refining richness Fe precipitated phases, comprises the following steps：
(1) aluminum feedstock is added in aluminium melting furnace, heating melts and is warming up to 800~850 DEG C, and addition raw material containing Fe makes Fe
Content is 1~2%；
(2) melt temperature is down to 730~780 DEG C, adds in refining agent to aluminium alloy melt removal of impurities, degassing processing；
(3) one or more in metallic element Mn, Mg, Ca are added in into aluminium alloy melt, to improve richness Fe phase morphologies；
(4) temperature of aluminium alloy melt is down to 720~750 DEG C, adds in grain refiner, makes rich Fe phases that more bonus point be precipitated
It dissipates；
(5) aluminium alloy melt carries out electromagnetic agitation, makes Fe Elemental redistributions uniform after Metamorphism treatment；
(6) by treated, aluminium alloy melt is poured into a mould, and water spray is handled after shell to be solidified.
In one of which embodiment, aluminum feedstock is aluminium ingot or aluminium scrap raw material in the step (1).
In one of which embodiment, raw material containing Fe is Fe agent or Al-Fe intermediate alloys in the step (1).
In one of which embodiment, in the step (2) addition of refining agent for aluminium alloy melt quality 1~
1.5%.
In one of which embodiment, the ingredient of refining agent is ice crystal and villaumite in the step (2), villaumite and aluminium
The bubble of H reaction generation gases HCl in liquid takes the inclusion particle in molten aluminum out of molten aluminum, realizes and aluminium alloy melt is removed
Gas, the purified treatment of removal of impurities.
In one of which embodiment, the villaumite is CaCl2、MgCl2In one kind or mixture.
In one of which embodiment, the content of the villaumite is the 10~25% of refining agent quality.
In one of which embodiment, the mass ratio of metallic element and Fe elements is 1: 2~1: 1 in the step (3).
In one of which embodiment, grain refiner refines for Al-Ti-B-RE intermediate alloys in the step (4)
Agent.
In one of which embodiment, the grain refiner is the 0.3~1% of aluminium alloy melt quality.
Compared with scheme of the prior art, it is an advantage of the invention that：
Technical solution using the present invention can refine richness Fe precipitated phases in high Fe contents aluminium alloy, improve high Fe and contain
The wear-resisting and heat resistance of aluminium alloy is measured, the production efficiency of cast aluminium alloy gold is improved, while ensures the performance of aluminium alloy.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, the accompanying drawings in the following description is only some embodiments of the present invention, for the common skill in this field
For art personnel, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the metallographic structure figure that aluminium alloy is made in the embodiment of the present invention 1；
Fig. 2 is the metallographic structure figure that aluminium alloy is made in the embodiment of the present invention 2；
Fig. 3 is the metallographic structure figure that aluminium alloy is made in the embodiment of the present invention 3.
Specific embodiment
Said program is described further below in conjunction with specific embodiment.It is to be understood that these embodiments are for illustrating
The present invention and be not limited to limit the scope of the invention.The implementation condition used in embodiment can be done according to the condition of specific producer
Further adjustment, the implementation condition being not specified is usually the condition in routine experiment.
Embodiment 1
(1) aluminium ingot is added in aluminium melting furnace, heats and melt and be warming up to 800 DEG C, added in raw material containing Fe and (added with Fe dosage form formulas
Enter), make Fe contents for the 1% of aluminium alloy melt quality；
(2) melt temperature is down to 730 DEG C, adds in refining agent to aluminium alloy melt removal of impurities, degassing processing, the addition of refining agent
It measures as the 1% of aluminium alloy melt quality, refining agent is ice crystal and CaCl2, CaCl2Content is the 10% of refining agent quality；
(3) mass ratio of the addition Mn elements into aluminium alloy melt, Mn elements and Fe elements is 1: 2；
(4) temperature of aluminium alloy melt is down to 720 DEG C, adds in Al-Ti-B-RE Master alloy refiners, grain refiner
For the 0.3% of aluminium alloy melt quality；
(5) aluminium alloy melt carries out electromagnetic agitation after Metamorphism treatment；
(6) by treated, aluminium alloy melt is poured into a mould, and water spray is handled after shell to be solidified.
The rich Fe phases of combined processing are mostly in short and thick rodlike or bone shape, and the size of rich Fe phases particle is mostly in 50~100 μ
In the range of m, rich Fe phases metallographic structure is as shown in Figure 1；Tensile strength at 150 DEG C is about the 70~80% of room temperature tensile strength
(tension test reference standard：GB/T 228-2010).
Embodiment 2
(1) aluminium ingot is added in aluminium melting furnace, heats and melt and be warming up to 850 DEG C, add in raw material containing Fe (with Al-Fe alloys
Form adds in), make Fe contents for the 2% of aluminium alloy melt quality；
(2) melt temperature is down to 780 DEG C, adds in refining agent to aluminium alloy melt removal of impurities, degassing processing, the addition of refining agent
It measures as the 1.5% of aluminium alloy melt quality, refining agent is ice crystal and MgCl2, MgCl2Content is the 25% of refining agent quality；
(3) mass ratio of the addition Mg elements into aluminium alloy melt, Mg elements and Fe elements is 1: 1；
(4) temperature of aluminium alloy melt is down to 750 DEG C, adds in Al-Ti-B-RE Master alloy refiners, grain refiner
For the 1% of aluminium alloy melt quality；
(5) aluminium alloy melt carries out electromagnetic agitation after Metamorphism treatment；
(6) by treated, aluminium alloy melt is poured into a mould, and water spray is handled after shell to be solidified.
The rich Fe phases of combined processing mostly in short and thick rodlike, the size of rich Fe phases particle mostly in 30~100 μ ms,
Rich Fe phases metallographic structure is as shown in Figure 2；Tensile strength at 150 DEG C is about 70~80% (tension tests of room temperature tensile strength
Reference standard：GB/T 228-2010).
Embodiment 3
(1) aluminium ingot is added in aluminium melting furnace, heats and melt and be warming up to 820 DEG C, added in raw material containing Fe and (added with Fe dosage form formulas
Enter), make Fe contents for the 1.5% of aluminium alloy melt quality；
(2) melt temperature is down to 750 DEG C, adds in refining agent to aluminium alloy melt removal of impurities, degassing processing, the addition of refining agent
It measures as the 1.2% of aluminium alloy melt quality, refining agent is ice crystal and CaCl2、MgCl2, CaCl2、MgCl2Content is refining agent
The 20% of quality；
(3) mass ratio of the addition Ca elements into aluminium alloy melt, Ca elements and Fe elements is 1: 1.5；
(4) temperature of aluminium alloy melt is down to 730 DEG C, adds in Al-Ti-B-RE Master alloy refiners, grain refiner
For the 0.5% of aluminium alloy melt quality；
(5) aluminium alloy melt carries out electromagnetic agitation after Metamorphism treatment；
(6) by treated, aluminium alloy melt is poured into a mould, and water spray is handled after shell to be solidified.
After carrying out combined processing, the ratio of coarse sheet richness Fe phases is down to 20% or so；The size of rich Fe phases particle is mostly
Below 100 μm, rich Fe phases metallographic structure is as shown in Figure 3；Tensile strength at 150 DEG C is about the 70- of room temperature tensile strength
80% (tension test reference standard：GB/T 228-2010).
Have at high temperature as it can be seen that the present processes can refine richness Fe precipitated phases, aluminium alloy in high Fe contents aluminium alloy
There is good tensile property, improve the heat resistance of aluminium alloy.
The foregoing examples are merely illustrative of the technical concept and features of the invention, its object is to allow one skilled in the art
Present disclosure can be understood and implemented according to this, it is not intended to limit the scope of the present invention.It is all smart according to the present invention
The equivalent transformation or modification that refreshing essence is done, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of preparation method for the high Fe contents aluminium alloy for refining richness Fe precipitated phases, which is characterized in that comprise the following steps：
(1) aluminum feedstock is added in aluminium melting furnace, heating melts and is warming up to 800~850 DEG C, and addition raw material containing Fe makes Fe contents
For 1~2%；
(2) melt temperature is down to 730~780 DEG C, adds in refining agent to aluminium alloy melt removal of impurities, degassing processing；
(3) added in into aluminium alloy melt one or more in metallic element Mn, Mg, Ca；
(4) temperature of aluminium alloy melt is down to 720~750 DEG C, adds in grain refiner；
(5) aluminium alloy melt carries out electromagnetic agitation after Metamorphism treatment；
(6) by treated, aluminium alloy melt is poured into a mould, and water spray is handled after shell to be solidified.
2. the preparation method of the high Fe contents aluminium alloy of refinement richness Fe precipitated phases according to claim 1, it is characterised in that：
Aluminum feedstock is aluminium ingot or aluminium scrap raw material in the step (1).
3. the preparation method of the high Fe contents aluminium alloy of refinement richness Fe precipitated phases according to claim 1, it is characterised in that：
Raw material containing Fe is Fe agent or Al-Fe intermediate alloys in the step (1).
4. the preparation method of the high Fe contents aluminium alloy of refinement richness Fe precipitated phases according to claim 1, it is characterised in that：
The addition of refining agent is the 1~1.5% of aluminium alloy melt quality in the step (2).
5. the preparation method of the high Fe contents aluminium alloy of refinement richness Fe precipitated phases according to claim 1, it is characterised in that：
The ingredient of refining agent is ice crystal and villaumite in the step (2).
6. the preparation method of the high Fe contents aluminium alloy of refinement richness Fe precipitated phases according to claim 5, it is characterised in that：
The villaumite is CaCl2、MgCl2In one kind or their mixture.
7. the preparation method of the high Fe contents aluminium alloy of refinement richness Fe precipitated phases according to claim 6, it is characterised in that：
The content of the villaumite is the 10~25% of refining agent quality.
8. the preparation method of the high Fe contents aluminium alloy of refinement richness Fe precipitated phases according to claim 1, it is characterised in that：
The mass ratio of metallic element and Fe elements is 1: 2~1: 1 in the step (3).
9. the preparation method of the high Fe contents aluminium alloy of refinement richness Fe precipitated phases according to claim 1, it is characterised in that：
Grain refiner is Al-Ti-B-RE Master alloy refiners in the step (4).
10. the preparation method of the high Fe contents aluminium alloy of refinement richness Fe precipitated phases according to claim 9, feature exist
In：The grain refiner is the 0.3~1% of aluminium alloy melt quality.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113286912A (en) * | 2019-01-16 | 2021-08-20 | 丰田自动车株式会社 | Method for regenerating aluminum alloy |
| CN115141957A (en) * | 2021-03-31 | 2022-10-04 | 比亚迪股份有限公司 | Aluminum alloy, preparation method thereof, structural part and mobile phone |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191488A (en) * | 2016-09-27 | 2016-12-07 | 广州致远合金制品有限公司 | A kind of can the preparation method of anodic oxidation pack alloy |
-
2017
- 2017-12-28 CN CN201711454978.5A patent/CN108048679A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191488A (en) * | 2016-09-27 | 2016-12-07 | 广州致远合金制品有限公司 | A kind of can the preparation method of anodic oxidation pack alloy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113286912A (en) * | 2019-01-16 | 2021-08-20 | 丰田自动车株式会社 | Method for regenerating aluminum alloy |
| CN115141957A (en) * | 2021-03-31 | 2022-10-04 | 比亚迪股份有限公司 | Aluminum alloy, preparation method thereof, structural part and mobile phone |
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Application publication date: 20180518 |