CN108118169A - A kind of thinning method of fining agent and 2124 alloy cast ingots - Google Patents
A kind of thinning method of fining agent and 2124 alloy cast ingots Download PDFInfo
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- CN108118169A CN108118169A CN201711473101.0A CN201711473101A CN108118169A CN 108118169 A CN108118169 A CN 108118169A CN 201711473101 A CN201711473101 A CN 201711473101A CN 108118169 A CN108118169 A CN 108118169A
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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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- 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
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Abstract
The present invention provides a kind of fining agent, ingredient is：The Ti of 2.5~3.5wt%；The B of 0.8~1.3wt%；Surplus is Al.The present invention provides a kind of thinning methods of 2124 alloy cast ingot, and the fining agent described in above-mentioned technical proposal is added in during 2124 alloy cast ingots are prepared.The present invention refines 2124 alloy cast ingots by the fining agent of special component, and 2124 alloys preferably can be refined in the case where adding in the fining agent of less dosage, and 2124 alloys after refinement reduce TiB2The aggregation of particle.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology more particularly to a kind of thinning methods of 2124 alloy cast ingot.
Background technology
The alloying element of 2124 aluminium alloys is copper, is referred to as duralumin, has very high intensity and good cutting processing machine
Can, but erosion resisting is poor.It is widely used in aircaft configuration (covering, skeleton, girt strip, bulkhead etc.), rivet, hardware, card
Wheel hub, propeller element and other various structural members are Al-Cu-Mg systems.Current 2124 alloy side ingot casting is refined using conventional
After technique refinement, TiB2Particle is susceptible to aggregation, and subsequent handling is made to be susceptible to detection defects, seriously affects product quality.
One kind is provided and avoids TiB2The process for refining of particle buildup becomes those skilled in the art's urgent problem to be solved.
The content of the invention
In view of this, it is an object of the invention to provide a kind of fining agent and the thinning method of 2124 alloy cast ingots, use
Fining agent provided by the invention, which refines 2124 alloy cast ingots, can avoid TiB2The aggregation of particle improves ingot quality.
The present invention provides a kind of fining agent, ingredient is：
The Ti of 2.5~3.5wt%；
The B of 0.8~1.3wt%；
Surplus is Al.
In the present invention, mass contents of the Ti in fining agent is preferably 2.7~3.2%, more preferably 2.9~
3.1%, it is most preferably 3.1%；Mass contents of the B in fining agent is preferably 0.9~1.2%, more preferably 1~
1.1%, it is most preferably 1.1%.
The present invention does not have the source of the fining agent special limitation, can be according to method well known to those skilled in the art
It is prepared, the preparation method of such as fining agent is preferably：
K is added into molten aluminum2TiF6And KBF4It is reacted, obtains fining agent.
In the present invention, the temperature of the reaction is preferably 860~880 DEG C, more preferably 865~875 DEG C, is most preferably
870℃；When the time of the reaction is preferably 0.4~0.8 small, more preferably 0.5~0.7 it is small when, be most preferably 0.6 it is small when.
The present invention provides a kind of thinning method of 2124 alloy cast ingot, the thinning method is to prepare the casting of 2124 alloys
The fining agent described in above-mentioned technical proposal is added in during ingot.In the present invention, the ingredient of 2124 alloy cast ingot is preferred
For：
The silicon of 0~0.2wt%；
The iron of 0~0.3wt%；
The copper of 3.8~4.9wt%；
The manganese of 0.3~0.9wt%；
1.2 the magnesium of~1.8wt%；
The chromium of 0~0.1wt%；
0~0.25% zinc；
The titanium of 0~0.15wt%；
Surplus is aluminium.
In the present invention, the mass content of the silicon is preferably 0.05~0.15%, and more preferably 0.08~0.12%, most
Preferably 0.1%；The mass content of the iron is preferably 0.05~0.25%, and more preferably 0.1~0.2%, be most preferably
0.15%；The mass content of the copper is preferably 4~4.8%, and more preferably 4.2~4.6, it is most preferably 4.4~4.5%；Institute
The mass content for stating manganese is preferably 0.4~0.8%, and more preferably 0.5~0.7%, it is most preferably 0.6%；The quality of the magnesium
Content is preferably 1.3~1.7%, and more preferably 1.4~1.6%, it is most preferably 1.5%；The mass content of the chromium is preferably
0.02~0.08%, more preferably 0.04~0.06% are most preferably 0.05%；The mass content of the zinc is preferably 0.03~
0.12%, more preferably 0.05~0.1% are most preferably 0.06~0.08%；The mass content of the titanium is preferably 0.05~
0.12%, more preferably 0.06~0.1% are most preferably 0.08~0.09%.
In the present invention, the thinning method of 2124 alloy cast ingot is preferably：
Dispensing, melting, refining, addition fining agent and casting are carried out successively, obtain 2124 alloy cast ingots.
The present invention does not have the method for the dispensing special limitation, using aluminium alloy well known to those skilled in the art
Ingredients technical scheme carries out dispensing according to the ingredient of above-mentioned 2124 alloy cast ingot.In the present invention, the raw material of the dispensing
Silicon source, source of iron, Tong Yuan, magnesium source, manganese source, chromium source, zinc source, titanium source and silicon source are preferably included, such as Cu plates, Mg ingots, alumal, aluminium
Titanium alloy, fine aluminium etc..
The present invention does not have the method for the melting special limitation, using melting technique well known to those skilled in the art
Scheme.In the present invention, the temperature of the melting is preferably 720~770 DEG C, more preferably 730~760 DEG C, most preferably
For 740~750 DEG C.
In the present invention, the method for the refining is preferably argon gas refining, and the temperature of the refining is preferably 720~760
DEG C, more preferably 730~750 DEG C, be most preferably 735~745 DEG C.
In the present invention, the aluminium alloy after refining is preferably sampled analysis after the completion of the refining, to judge alloy
Whether the ingredient of liquid meets the requirements.
In the present invention, the fining agent is the fining agent described in above-mentioned technical proposal, and details are not described herein.In the present invention
In, the Adding Way of the fining agent is preferably online adds in.In the present invention, the addition of the fining agent is preferably with Ti
Meter, the dosage of the fining agent is 0.004~0.008% of the alloy liquid quality after refining, more preferably 0.005~
0.006%.
In the present invention, the casting temperature in the casting process is preferably 720~760 DEG C, and more preferably 730~750
DEG C, it is most preferably 735~745 DEG C；Cooling water flow is preferably 20~40m in the casting process3/ h, more preferably 25~
35m3/ h is most preferably 30m3/h；Casting speed in the casting process is preferably 45~70mm/min, more preferably 50~
65mm/min is most preferably 55~60mm/min.
The present invention refines 2124 alloy cast ingots by the fining agent of special component, is adding in the refinement of less dosage
2124 alloys can preferably be refined in the case of agent, and 2124 alloys after refinement are without TiB2The aggregation of particle.
Specific embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff it is improved or retouching all other example, belong to the scope of protection of the invention.
Embodiment 1
Dispensing, melting, refining, sampling analysis, addition fining agent and casting are carried out successively, obtain 2124 alloy cast ingots.
The ingredient of the fining agent is the Ti of 3.1wt%；The B of 1.1wt%；Surplus is Al.
The temperature of the melting is 750 DEG C.
The method of the refining refines for argon gas, and the temperature of the refining is 740 DEG C.
The sampling analysis is that the chemical composition of aluminium alloy is analyzed.
The addition of the fining agent is calculated as 0.005% of the alloy liquid quality after refining with Ti.
Casting temperature is 740 DEG C in the casting process, cooling water flow 30m3/h；Casting speed is 60mm/min.
Composition detection is carried out to 2124 alloy cast ingots that the embodiment of the present invention 1 is prepared, testing result is that the present invention is real
The ingredient for applying 2124 alloy cast ingots that example 1 is prepared is：
The silicon of 0.02wt%；The iron of 0.05wt%；The copper of 4.05wt%；The manganese of 0.43wt%；The magnesium of 1.32wt%；
The chromium of 0.01wt%；The zinc of 0.01wt%；The titanium of 0.01wt%；Surplus is aluminium.
According to GB/T 3246.2-2000《Deform aluminium and the Al-alloy products macrostructure method of inspection》Standard tests this hair
The grain size for 2124 alloy cast ingots that bright embodiment 1 is prepared, testing result be, what the embodiment of the present invention 1 was prepared
The grain size of 2124 alloy cast ingots is 1 grade, and grain size is smaller；2124 alloy cast ingots that the test embodiment of the present invention 1 is prepared
TiB2Aggregation, testing result is, without TiB in 2124 alloy cast ingots that the embodiment of the present invention 1 is prepared2Aggregation.
Embodiment 2
Dispensing, melting, refining, sampling analysis, addition fining agent and casting are carried out successively, obtain 2124 alloy cast ingots.
The ingredient of the fining agent is the Ti of 3.1wt%；The B of 1.1wt%；Surplus is Al.
The temperature model of the melting is 720 DEG C.
The method of the refining refines for argon gas, and the temperature of the refining is 720 DEG C.
The sampling analysis is to carry out chemical composition analysis to aluminium alloy.
The addition of the fining agent is calculated as 0.004% of the alloy liquid quality after refining with Ti.
Casting temperature in the casting process is 720 DEG C, cooling water flow 20m3/h；Casting speed is 45mm/
min。
Composition detection is carried out to 2124 alloy cast ingots that the embodiment of the present invention 2 is prepared, testing result is that the present invention is real
The ingredient for applying 2124 alloy cast ingots that example 2 is prepared is：
The silicon of 0.03wt%；The iron of 0.05wt%；The copper of 4.15wt%；The manganese of 0.43wt%；The magnesium of 1.28wt%；
The chromium of 0.01wt%；The zinc of 0.02wt%；The titanium of 0.013wt%；Surplus is Al.
To the grain size for 2124 alloy cast ingots that the embodiment of the present invention 2 is prepared, testing result is the embodiment of the present invention
The grain size of 2 2124 alloy cast ingots being prepared is 1 grade, and grain size is smaller.The test embodiment of the present invention 2 is prepared
The TiB of 2124 alloy cast ingots2Aggregation, testing result is, without TiB in 2124 alloy cast ingots that the embodiment of the present invention 2 is prepared2
Aggregation.
Embodiment 3
Dispensing, melting, refining, sampling analysis, addition fining agent and casting are carried out successively, obtain 2124 alloy cast ingots.
The ingredient of the fining agent is the Ti of 3.1wt%；The B of 1.1wt%；Surplus is Al.
The temperature of the melting is 770 DEG C.
The method of the refining refines for argon gas, and the temperature of the refining is 760 DEG C.
The sampling analysis is that the chemical composition of aluminium alloy is analyzed.
The addition of the fining agent is calculated as 0.008% of the alloy liquid quality after refining with Ti.
Casting temperature in the casting process is 760 DEG C, cooling water flow 40m3/h；Casting speed is 70mm/
min。
Composition detection is carried out to 2124 alloy cast ingots that the embodiment of the present invention 3 is prepared, testing result is that the present invention is real
The ingredient for applying 2124 alloy cast ingots that example 3 is prepared is：
The silicon of 0.02wt%；The iron of 0.04wt%；The copper of 4.20wt%；The manganese of 0.46wt%；The magnesium of 1.28wt%；
The chromium of 0.01wt%；The zinc of 0.02wt%；The titanium of 0.013wt%；Surplus is Al.
The grain size for 2124 alloy cast ingots that the test embodiment of the present invention 3 is prepared, testing result are that the present invention is implemented
The grain size for 2124 alloy cast ingots that example 3 is prepared is 1 grade, and grain size is smaller.The test embodiment of the present invention 3 is prepared
The TiB of 2124 alloy cast ingots2Aggregation, testing result is, without TiB in 2124 alloy cast ingots that the embodiment of the present invention 3 is prepared2
Aggregation.
Comparative example 1
2124 alloy cast ingots are prepared in method according to embodiment 1, and difference lies in used thin with embodiment 1
Agent ingredient is：The Ti of 5.5wt%；The B of 1wt%；Surplus is Al.
The addition of fining agent is calculated as 0.01% of the alloy liquid quality after refining with Ti.
The grain size for 2124 alloy cast ingots that test comparative example 1 of the present invention is prepared, testing result are that the present invention is relatively
The grain size for 2124 alloy cast ingots that example 1 is prepared is 1 grade, and grain size is smaller.Test comparative example 1 of the present invention is prepared
The TiB of 2124 alloy cast ingots2Aggregation, testing result is TiB in 2124 alloy cast ingots that comparative example 1 of the present invention is prepared2It is poly-
Collection is serious.
As seen from the above embodiment, the present invention provides a kind of fining agent, ingredient is：The Ti of 2.5~3.5wt%；0.8~
The B of 1.3wt%；Surplus is Al.The present invention provides a kind of thinning methods of 2124 alloy cast ingot, are preparing 2124 alloy cast ingots
During add in above-mentioned technical proposal described in fining agent.The present invention is by the fining agent of special component to 2124 alloy cast ingots
It is refined, 2124 alloys can preferably be refined in the case where adding in the fining agent of less dosage, and after refinement
2124 alloys reduce TiB2The aggregation of particle.
Above-described is only the preferred embodiment of the present invention, it is noted that for the ordinary skill of the art
For personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of fining agent, ingredient are：
The Ti of 2.5~3.5wt%；
The B of 0.8~1.3wt%；
Surplus is Al.
2. a kind of preparation method of fining agent described in claim 1, including：
K is added into molten aluminum2TiF6And KBF4It is reacted, obtains fining agent.
3. according to the method described in claim 2, it is characterized in that, the temperature of the reaction is 860~880 DEG C；The reaction
Time for 0.4~0.8 it is small when.
4. a kind of thinning method of 2124 alloy cast ingot, which is characterized in that power is added in during 2124 alloy cast ingots are prepared
Profit requires the fining agent described in 1.
5. according to the method described in claim 4, it is characterized in that, the ingredient of 2124 alloy cast ingot is：
The silicon of 0~0.2wt%；
The iron of 0~0.3wt%；
The copper of 3.8~4.9wt%；
The manganese of 0.3~0.9wt%；
The magnesium of 1.2~1.8wt%；
The chromium of 0~0.1wt%；
0~0.25% zinc；
The titanium of 0~0.15wt%；
Surplus is aluminium.
6. thinning method according to claim 4, which is characterized in that the thinning method is specially：
Dispensing, melting, refining, addition fining agent and casting are carried out successively, obtain 2124 alloy cast ingots.
7. according to the method described in claim 6, it is characterized in that, the addition of the fining agent with Ti content meters, it is described thin
The quality of agent is the 0.004~0.008% of the quality of the aluminium alloy after refining.
8. according to the method described in claim 6, it is characterized in that, the temperature of the melting is 720~770 DEG C.
9. according to the method described in claim 6, it is characterized in that, the method for the refining refines for argon gas；The refining temperature
It spends for 720~760 DEG C.
10. according to the method described in claim 6, it is characterized in that, the temperature of the casting is 720~760 DEG C；The casting
The flow of cooling water is 20~40m in the process3/h；The speed of the casting is 40~70mm/min.
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Cited By (2)
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| CN109022972A (en) * | 2018-09-04 | 2018-12-18 | 西南铝业（集团）有限责任公司 | A kind of 2D12 extruding aluminium alloy of optimizing components and preparation method thereof |
| CN111041306A (en) * | 2019-12-31 | 2020-04-21 | 上海交通大学 | 2xxx series aluminum alloy with excellent weldability and preparation method thereof |
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