CN104451283B - A kind of production method of 5A06 aluminium alloy cast ingot - Google Patents
A kind of production method of 5A06 aluminium alloy cast ingot Download PDFInfo
- Publication number
- CN104451283B CN104451283B CN201410762625.1A CN201410762625A CN104451283B CN 104451283 B CN104451283 B CN 104451283B CN 201410762625 A CN201410762625 A CN 201410762625A CN 104451283 B CN104451283 B CN 104451283B
- Authority
- CN
- China
- Prior art keywords
- melt
- melting
- casting
- aluminium alloy
- mixed gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- 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
-
- 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
-
- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
Abstract
The invention provides a kind of production method preparing 5A06 aluminium alloy cast ingot, comprise the following steps: A) raw material is carried out melting, at the surface covering flux of melt during described melting；B) melt after melting carrying out in mixed gas refine, described mixed gas is the mixed gas of nitrogen and chlorine；C) by step B) melt that obtains carries out online degasification and on-line filtration successively；D) by step C) melt that obtains casts；E) by step D) ingot casting that obtains is machined out, then carries out soaking, obtain 5A06 aluminium alloy cast ingot.The application by each stage strictly being controlled producing during aluminium alloy cast ingot, the problem such as effectively prevent that hydrogen content is higher, oxide-film is many and slag inclusion is many, finally make the flaw detection qualification rate of follow-up forging more than 95%.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, particularly relate to a kind of 5A06 aluminium alloy cast ingot
Production method.
Background technology
Metallic element in 5A06 aluminium alloy includes: copper, magnesium, zinc, manganese, titanium, beryllium, ferrum with
Aluminum, its main alloy element is magnesium, is a kind of high magnesium alloy.5A06 aluminium alloy has good
Corrosion resistance, solderable performance and moderate strength.The excellent corrosion resistance of 5A06 aluminium alloy makes
It is widely used in maritime affairs, automobile, aircraft weldment, subway integrate with, refrigerating plant etc..
The major defect of 5A06 aluminum alloy forge piece is oxide-film at present, flaw detection waste product and low power
Dreg defect.Wherein oxide-film scraps proportion maximum, the low casting caused of oxide-film qualification rate
Ingot loss from spoilage rate is about 15%；Flaw detection scrappage is 11.34%.
The reason that 5A06 alloy forged piece scrappage is higher is primarily due to: 5A06 aluminium alloy itself
Mg content is higher, and melt is oxidizable, and existing cleaning system sealing effectiveness is poor, depassing unit
Degassing effect difference and slag making are serious, and melt hydrogen content is substantially at 0.24ml/100gAl；Simultaneously existing
Having forging type also to easily cause oxide entrapment, oxide-film, detection defects are scrapped and are had a strong impact on more
The guarantor of ingot casting is for task, and limits the extensive application of 5A06 aluminium alloy.
Summary of the invention
Present invention solves the technical problem that the producer being to provide a kind of 5A06 aluminium alloy cast ingot
Method, 5A06 aluminium alloy cast ingot flaw detection qualification rate prepared by the application is more than 97%.
In view of this, this application provides the production method of a kind of 5A06 aluminium alloy cast ingot, bag
Include following steps:
A) raw material of following composition is carried out melting: Si, 0～the 0.35wt%'s of 0～0.20wt%
The Mg of the Mn of the Cu of Fe, 0～0.10wt%, 0.50～0.75wt%, 6.0～6.7wt%,
The Ti of the Be of Zn, 0.001～0.005wt%, 0.02～the 0.08wt% of 0～0.15wt% and surplus
Aluminum, the temperature of described melting is 720 DEG C～760 DEG C, at the table of melt during described melting
Face covering flux；
B) melt after melting carrying out in mixed gas refine, described mixed gas is nitrogen
Gas and the mixed gas of chlorine；
C) by step B) melt that obtains carries out online degasification and on-line filtration successively, described
The pressure of online degasification is 0.15MPa～0.35MPa, and the gas flow of described online degasification is
2000～3000L/h/ roots rotors, the strainer surface spraying boron nitride coating excessively of described on-line filtration；
D) by step C) melt that obtains casts, gate spool during described casting
The temperature of top is 690 DEG C～715 DEG C；
E) by step D) ingot casting that obtains is machined out, then carries out soaking, obtain 5A06
Aluminium alloy cast ingot.
Preferably, the addition of described flux is (4～5) kg/tAl.
Preferably, the temperature of described refine is 740 DEG C～765 DEG C, and the time of described refine is
15～20min.
Preferably, described nitrogen is 88wt%～94wt% of described mixed gas, and described chlorine is
6wt%～12wt% of described mixed gas.
Preferably, described online degasification uses rotary nozzle method degasification.
Preferably, during described rotary nozzle method degasification, described rotor speed is 300～500
Turn/min.
Preferably, the speed of described casting is 25～65mm/min, and the temperature of described casting is 740
DEG C～760 DEG C, the hydraulic pressure of described casting is 0.05～0.12MPa.
This application provides a kind of production method preparing 5A06 aluminium alloy cast ingot, including following
Step: A) 5A06 aluminium alloy stock is carried out melting, at melting liquid during described melting
Surface covering flux；B) melt after melting is carried out in mixed gas refine, described
Mixed gas is the mixed gas of nitrogen and chlorine；C) by step B) melt that obtains is successively
Carrying out online degasification and on-line filtration, the pressure of described online degasification is 0.15MPa～0.35MPa,
The gas flow of described online degasification is 2000～3000L/h/ roots rotors, the mistake of described on-line filtration
Strainer surface spraying boron nitride coating；D) by step C) melt that obtains casts, institute
Stating during casting the temperature above gate spool is 690 DEG C～715 DEG C；E) by step D)
To ingot casting be machined out, then carry out soaking, obtain 5A06 aluminium alloy cast ingot.In system
During standby 5A06 aluminium alloy cast ingot, first during melting, by liquation table
Face covering flux, makes the fine and close oxide-film on aluminum liquid surface be broken for fine particle and be inhaled
Enter flux layer, with the effusion of beneficially hydrogen, be conducive to the oxidation folder removing in aluminum melt simultaneously
Foreign material；The application uses mixed gas to carry out refine, reduces the hydrogen content in melt, improves
The degree of purity of melt；And during online degasification and on-line filtration, by limit air pressure,
Gas flow and rotor speed, further eliminate the foreign gas in fusion process, and
During on-line filtration, in crossing strainer, spraying nitrogenizes spray paint, makes basin inwall ball non-sticky to aluminum, enters
One step ensure that the degree of purity of melt；Finally by limiting above gate spool during casting
Temperature, it is possible to prevent the defect such as compound, oxide slag inclusion.In summary, the application passes through
During preparing aluminium alloy cast ingot, each stage is strictly controlled, effectively prevent hydrogen and contain
Measure higher, the problem such as oxide-film is many and slag inclusion is many, finally make the flaw detection qualification rate of follow-up forging
More than 95%.
Detailed description of the invention
In order to be further appreciated by the present invention, below in conjunction with embodiment to the preferred embodiment of the invention
It is described, but it is to be understood that these describe simply as further illustrating inventive feature
With advantage rather than limiting to the claimed invention.
The embodiment of the invention discloses the production method of a kind of 5A06 aluminium alloy cast ingot, including with
Lower step:
A) raw material of following composition is carried out melting: Si, 0～the 0.35wt%'s of 0～0.20wt%
The Mg of the Mn of the Cu of Fe, 0～0.10wt%, 0.50～0.75wt%, 6.0～6.7wt%,
The Ti of the Be of Zn, 0.001～0.005wt%, 0.02～the 0.08wt% of 0～0.15wt% and surplus
Aluminum, the temperature of described melting is 720 DEG C～760 DEG C, at melting liquid during described melting
Surface covering flux；
B) melt after melting carrying out in mixed gas refine, described mixed gas is nitrogen
Gas and the mixed gas of chlorine；
C) by step B) melt that obtains carries out online degasification and on-line filtration successively, described
The pressure of online degasification is 0.15MPa～0.35MPa, and the gas flow of described online degasification is
2000～3000L/h/ roots rotors, the strainer surface spraying boron nitride coating excessively of described on-line filtration；
D) by step C) melt that obtains casts, gate spool during described casting
The temperature of top is 690 DEG C～715 DEG C；
E) by step D) ingot casting that obtains is machined out, then carries out soaking, obtain 5A06
Aluminium alloy cast ingot.
This application provides the production method of a kind of 5A06 aluminium alloy cast ingot.At preparation 5A06
During aluminium alloy, the application is through melting-refine-online degasification-on-line filtration-casting-machine
The a series of process of processing-soaking, and by limiting the parameter of above-mentioned steps, the aluminium alloy obtained
Ingot casting reaches more than 95% through follow-up forging flaw detection qualification rate.
According to the present invention, first the raw material of 5A06 aluminium alloy is carried out melting, carry out melting
Before, need first to carry out dispensing according to the component of 5A06 aluminium alloy.During dispensing,
The usage amount of fine aluminium ingot is no less than 40%, and one-level waste material is ensureing fine aluminium ingot consumption with secondary waste
The most unrestricted, do not use complexification material, to ensure the degree of purity of the melt after final melting.
Before carrying out melting, during various raw materials feed intake, Mn uses the form of Al-Mn to add
Enter, be added in the upper strata of furnace charge；The addition temperature of Mg ingot controls at 730 DEG C～750 DEG C, the highest not
More than 760 DEG C；Be uses the form of Al-Be to add, and is simultaneously introduced with Mg ingot, to reduce
Scaling loss.At the surface covering flux of melting liquid during melting, the consumption of described flux is
4～5kg/tAl.Described flux can make the fine and close oxide-film on aluminum liquid surface be broken for tiny
Grain also has the effect being sucked flux layer, thus will no longer be present obstruction hydrogen molecule and escape into greatly
The skin covering of the surface of gas, makes hydrogen molecule enter air easily by flux layer；On the other hand, flux
The oxide inclusion in aluminum liquid can be removed, also can remove absorption minute bubbles on field trash surface.
Herein described flux is preferably 2# flux, and described 2# flux preferably includes the KCl of 40wt%,
The MgCl of 46wt%2, the CaCl of≤8wt%2, the BaCl of 8wt%2.Herein described melting
Raw material include: the Cu of the Fe of Si, 0～0.35wt%, 0～the 0.10wt% of 0～0.20wt%,
The Zn of the Mg of Mn, 6.0～6.7wt%, 0～the 0.15wt% of 0.50～0.75wt%,
The Ti of Be, 0.02～the 0.08wt% of 0.001～0.005wt% and the Al of surplus.Described melting
Temperature is 720 DEG C～760 DEG C.
Then the melt after melting is carried out in mixed gas after carrying out melting refine, described
Mixed gas is the mixed gas of nitrogen and chlorine.The application carries out essence in above-mentioned mixed gas
Refining, it is possible to prevent from introducing the hydrogen of excess, and cause hydrogen content rising, oxide-film to increase problem
Occur.The content of described nitrogen is preferably 88wt%～94wt%, and the content of described chlorine is preferably
6wt%～12wt%.Wherein concentration≤the 15ppm of steam in nitrogen, the concentration≤15ppm of oxygen；
Concentration≤the 500ppm of steam in described chlorine.The temperature of described refine is preferably
740 DEG C～765 DEG C, the time of described refine is preferably 15～20min.The application completes in refine
After, preferably at bath surface covering flux, to reach to protect melt, improve melt purification
Effect.The application preferably carries out refine in T-shaped purifier.
According to the present invention, after refine completes, then the melt after refine is carried out online degasification with
On-line filtration.Described online degasification preferably employs rotary nozzle method degasification.Described online degasification
Rotor speed is preferably 300～500 turns/min.The gas pressure of described online degasification is preferably
0.15～0.35MPa, preferably 0.20～0.28MPa, the gas flow of described online degasification is preferred
It is 2000～3000L/h/ roots rotors, preferably 2200～2700L/h/ roots rotor, described gas pressure
Power and the restriction of gas flow, it is possible to effectively control hydrogen content.By online degasification, control liquid
State hydrogen content is at 0.16ml/100Al.Described online degasification is preferably used argon, in described argon
Steam is less than or equal to 15ppm with the concentration of oxygen.During on-line filtration, the application
The single-stage preferably employing 40ppi filters, and filters spray surface spraying boron nitride coating, to ensure
Strainer inwall does not glue aluminum, further increases the degree of purity of melt.Preferably, this Shen
Please have employed the prefabricated component of the AR-S material of Pyrotek company and spray boron nitride coating, permissible
Ensure the cleaning of strainer inwall, improved the degree of purity of melt, reduce slag inclusion.
Then melt is cast by the present invention, controlled temperature above gate spool and be before casting
690 DEG C～715 DEG C, the generation that can control compound can also reduce the generation of oxidizing slag.This Shen
Being cast into forging type well known to those skilled in the art described in please, the application the most particularly limits
System.The temperature of described casting is preferably 740 DEG C～760 DEG C, and the speed of described casting is preferably
25～65mm/min, the hydraulic pressure of described casting is preferably 0.05MPa～0.12MPa.
According to the present invention, finally the ingot casting obtained through casting is machined out, will be through machine
The ingot casting of processing carries out soaking.The temperature of described soaking selects according to the size of ingot casting, right
Temperature in the round ingot casting soaking of≤Φ 482mm specification is preferably 465 DEG C～475 DEG C, temperature retention time
For 16h；Temperature ＞ Φ 482mm specification being justified to ingot casting soaking is preferably
465 DEG C～475 DEG C, temperature retention time is 18h.
This application provides a kind of production method preparing 5A06 aluminium alloy cast ingot, including following
Step: A) 5A06 aluminium alloy stock is carried out melting, at melting liquid during described melting
Surface covering flux；B) melt after melting is carried out in mixed gas refine, described
Mixed gas is the mixed gas of nitrogen and chlorine；C) by step B) melt that obtains is successively
Carrying out online degasification and on-line filtration, the pressure of described online degasification is 0.15MPa～0.35MPa,
The gas flow of described online degasification is 2000～3000L/h/ roots rotors, the mistake of described on-line filtration
Strainer surface spraying boron nitride coating；D) by step C) melt that obtains casts, institute
Stating during casting the temperature above gate spool is 690 DEG C～715 DEG C；E) by step D)
To ingot casting be machined out, then carry out soaking, obtain 5A06 aluminium alloy cast ingot.In system
During standby 5A06 alloy cast ingot, first during melting, by liquation table
Face covering flux, make flux make the fine and close oxide-film on aluminum liquid surface be broken for fine particle and
Sucked flux layer, with the effusion of beneficially hydrogen, be conducive to removing in aluminum melt simultaneously
Oxide inclusion；The application uses mixed gas to carry out refine, reduces the hydrogen content in melt,
Improve the degree of purity of melt；And during online degasification and on-line filtration, by limiting gas
Pressure, gas flow and rotor speed, further eliminate the foreign gas in fusion process,
And during on-line filtration, in crossing strainer, spraying nitrogenizes spray paint, makes basin inwall ball non-sticky to aluminum,
Further ensure the degree of purity of melt；Finally by limiting on gate spool during casting
The temperature of side, it is possible to prevent the defect such as compound, oxide slag inclusion.In summary, the application is led to
Cross and during preparing aluminium alloy cast ingot, each stage is strictly controlled, effectively prevent hydrogen
The problem such as content is higher, oxide-film is many and slag inclusion is many, the flaw detection finally making follow-up forging is qualified
Rate is more than 95%.
In order to be further appreciated by the present invention, the 5A06 present invention provided below in conjunction with embodiment
The production method of aluminium alloy cast ingot is described in detail, and protection scope of the present invention is not by following reality
Execute the restriction of example.
Embodiment 1
Dispensing: new aluminum usage amount is no less than 40%, and one-level waste material and secondary waste are ensureing new aluminum
After consumption unrestricted, do not use complexification material.Require raw material surface cleaning, anhydrous, without mud,
Without greasy dirt and without heavy corrosion, to ensure the degree of purity of melt.Raw material after dispensing includes:
The silicon of 0.12wt%, Mn, 6.5wt% of Cu, 0.60wt% of Fe, 0.08wt% of 0.20wt%
The Al of Ti and surplus of Be, 0.05wt% of Zn, 0.005wt% of Mg, 0.10wt%；
Melting: above-mentioned raw materials carries out in smelting furnace melting, smelting temperature is 760 DEG C, changes
Collapse, change flat and sampling front employing 2# flux covering, total consumption about 4kg/tAl in smelting furnace.Its
Middle Mn uses the form of Al-Mn to be added in the upper strata of furnace charge uniformly；The addition temperature of Mg ingot
Controlling at 730～750 DEG C, the highest be less than 760 DEG C, to reduce scaling loss, Be uses Al-Be
Mode add, be simultaneously introduced in stove with Mg ingot, after addition with 2# flux cover, after stirring
Sampling；
Process in standing furnace: in the melt in smelting furnace is forwarded to standing furnace, carry out refine, molten
Add 2# flux uniformly during body transfer, use T-shape purifier in standing furnace, use N2-Cl2
(N2: 88wt%, Cl212%) gaseous mixture refine, N2Require H2O≤15ppm, O2≤ 15ppm,
Cl2Require H2O≤500ppm, refining time 15～20 minutes, refining temperature is 745 DEG C, essence
Training of qi bubble requires less than 80mm.Uniformly spread 2# flux such as at bath surface after refine is complete to carry out
Cover, and stand 45min.
Online treatment: the melt after refining is carried out online degasification and on-line filtration successively.Online
Degasification uses rotary nozzle method degasification, uses Ar gas: H2O+O2≤ 15ppm, rotor speed control
System is at 500 revs/min, and gas flow is 2500L/h/ roots rotor, and gas pressure is 0.35MPa,
By standing furnace refining and online degasification, control liquified hydrogen content 0.16ml/100gAl with
Under；The single-stage using 40ppi filters, and the prefabricated component of the AR-S material of Pyrotek company also sprays
It is coated with boron nitride coating, it is ensured that cross the cleaning of strainer inwall, improves the degree of purity of melt, subtract
Few slag inclusion.
Casting: the melt after on-line filtration is cast, obtains the round ingot casting of Φ 310mm；
Above casting temperature control gate spool, temperature is at 715 DEG C, and the generation that can control compound also may be used
Reduce the generation of oxidizing slag；Other parameters in casting process are as shown in table 1.
Machining: by the round ingot casting gate part sawing 300mm of Φ 310mm, bottom sawing
350mm railway carriage amount see table 1；Its railway carriage amount is increased to 10mm from monolateral 6mm, permissible
Effectively improve ingot surface quality, reduce forging crack and detection defects.Ingot casting after railway carriage
The defects such as pore-free, shrinkage cavity, crackle, stratification, slag inclusion, corrosion are answered on surface, and without sawdust,
The foul such as greasy dirt, dust.
Soaking: soaking will be carried out through mach round ingot casting at 470 ± 5 DEG C, and be incubated 16h,
Obtain 5A06 aluminium alloy cast ingot.
The 5A06 aluminium alloy cast ingot prepared by the present embodiment carries out low power and fracture detects: one-level
Oxide-film and one-level are loosened, flawless, pore, field trash, white macula, crystal layer divide, light is brilliant,
Lace, primary crystal (para-crystal, metallic compound or coarsening compound, compound segregation), crystal grain
Spend≤3 grades (8 grades of grain size standards of country)；High power detects: without burning.By the circle casting of preparation
Ingot forges, and the flaw detection rate of the forging obtained is 96%.
Embodiment 2
Dispensing: new aluminum usage amount is no less than 40%, and one-level waste material and secondary waste are ensureing new aluminum
After consumption unrestricted, do not use complexification material.Require raw material surface cleaning, anhydrous, without mud,
Without greasy dirt and without heavy corrosion, to ensure the degree of purity of melt.Raw material after dispensing includes:
Mn, 6.3wt% of Cu, 0.60wt% of Fe, 0.10wt% of Si, 0.35wt% of 0.20wt%
The Al of Ti and surplus of Be, 0.025wt% of Zn, 0.003wt% of Mg, 0.15wt%；
Melting: above-mentioned raw materials carries out in smelting furnace melting, smelting temperature is 720 DEG C, changes
Collapse, change flat and sampling front employing 2# flux covering, total consumption about 4kg/tAl in smelting furnace.Its
Middle Mn uses the form of Al-Mn to be added in the upper strata of furnace charge uniformly；The addition temperature of Mg ingot
Controlling at 730～750 DEG C, the highest be less than 760 DEG C, to reduce scaling loss, Be uses Al-Be
Mode add, be simultaneously introduced in stove with Mg ingot, after addition with 2# flux cover, after stirring
Sampling；
Process in standing furnace: forward the melt in smelting furnace to standing furnace and carry out refine, at melt
Add 2# flux during transfer uniformly, use T-shape purifier to carry out refine, use N2-Cl2
(N2: 88wt%, Cl212%) gaseous mixture refine, N2Require H2O≤15ppm, O2≤ 15ppm,
Cl2Require H2O≤500ppm, refining time 15～20 minutes, refining temperature is 755 DEG C, essence
Training of qi bubble requires less than 80mm.Uniformly spread 2# flux such as at bath surface after refine is complete to carry out
Cover, and stand 45min.
Online treatment: the melt after refining is carried out online degasification and on-line filtration successively.Online
Degasification uses rotary nozzle method degasification, uses Ar gas: H2O+O2≤ 15ppm, rotor speed control
System is at 300～500 revs/min, and gas flow is 2000L/h/ roots rotor, and gas pressure is
0.15MPa, by standing furnace refining and online degasification, controls liquified hydrogen content and exists
Below 0.16ml/100gAl；The single-stage using 40ppi filters, the AR-S material of Pyrotek company
The prefabricated component of material also sprays boron nitride coating, it is ensured that crosses the cleaning of strainer inwall, improves molten
The degree of purity of body, reduces slag inclusion.
Casting: the melt after on-line filtration is cast, obtains the round ingot casting of Φ 360mm；
Above casting temperature control gate spool, temperature is at 715 DEG C, and the generation that can control compound also may be used
Reduce the generation of oxidizing slag；Other parameters in casting process are as shown in table 1.
Machining: by the round ingot casting gate part sawing 300mm of Φ 360mm, bottom sawing
350mm, railway carriage amount see table 1, and from monolateral 6mm, its railway carriage amount is increased to 10mm, can
Effectively to improve ingot surface quality, reduce forging crack and detection defects.Casting after railway carriage
Ingot surface answers the defects such as pore-free, shrinkage cavity, crackle, stratification, slag inclusion, corrosion, and without saw
The fouls such as bits, greasy dirt, dust.
Soaking: circle ingot casting is carried out soaking at 470 ± 5 DEG C, is incubated 16h, obtain 5A06 aluminum and close
Gold ingot casting.
The 5A06 aluminium alloy cast ingot prepared by the present embodiment carries out low power and fracture detects: one-level
Oxide-film and one-level are loosened, flawless, pore, field trash, white macula, crystal layer divide, light is brilliant,
Lace, primary crystal (para-crystal, metallic compound or coarsening compound, compound segregation), crystal grain
Spend≤3 grades (8 grades of grain size standards of country)；High power detects: without burning.By the circle casting of preparation
Ingot forges, and the flaw detection rate of the forging obtained is 96.5%.
Embodiment 3
Dispensing: new aluminum usage amount is no less than 40%, and one-level waste material and secondary waste are ensureing new aluminum
After consumption unrestricted, do not use complexification material.Require raw material surface cleaning, anhydrous, without mud,
Without greasy dirt and without heavy corrosion, to ensure the degree of purity of melt.Raw material after dispensing includes:
The silicon of 0.12wt%, Mn, 6.5wt% of Cu, 0.60wt% of Fe, 0.08wt% of 0.20wt%
The Al of Ti and surplus of Be, 0.05wt% of Zn, 0.005wt% of Mg, 0.10wt%；
Melting: above-mentioned raw materials carries out in smelting furnace melting, smelting temperature is 760 DEG C, changes
Collapse, change flat and sampling front employing 2# flux covering, total consumption about 4kg/tAl in smelting furnace.Its
Middle Mn uses the form of Al-Mn to be added in the upper strata of furnace charge uniformly；The addition temperature of Mg ingot
Controlling at 730～750 DEG C, the highest be less than 760 DEG C, to reduce scaling loss, Be uses Al-Be
Mode add, be simultaneously introduced in stove with Mg ingot, after addition with 2# flux cover, after stirring
Sampling；
Process in standing furnace: when smelting furnace forwards standing furnace to, add 2# flux uniformly, stand
Use T-shape purifier to carry out refine in stove, use N2-Cl2(N2: 88wt%, Cl212%)
Gaseous mixture refine, N2Require H2O≤15ppm, O2≤ 15ppm, Cl2Require H2O≤500ppm,
Refining time 15～20 minutes, refining temperature is 765 DEG C, and refine bubble requires less than 80mm.
Uniformly spread 2# flux such as at bath surface after refine is complete to cover, and stand 45min.
Online treatment: the melt after refining is carried out online degasification and on-line filtration successively.Online
Degasification uses rotary nozzle method degasification, uses Ar gas: H2O+O2≤ 15ppm, rotor speed control
System is at 300～500 revs/min, and gas flow is 2200L/h, and pressure is 0.32MPa, passes through
Stand furnace refining and online degasification, control liquified hydrogen content at below 0.16ml/100gAl；
The single-stage using 40ppi filters, and the prefabricated component of the AR-S material of Pyrotek company also sprays nitrogen
Change boron dope, it is ensured that cross the cleaning of strainer inwall, improve the degree of purity of melt, reduce folder
Slag.
Casting: the melt after on-line filtration is cast, obtains the round ingot casting of Φ 405mm；
Above casting temperature control gate spool, temperature is at 715 DEG C, and the generation that can control compound also may be used
Reduce the generation of oxidizing slag；Other parameters in casting process are as shown in table 1.
Machining: the round ingot casting gate part sawing 250mm that casting is obtained, bottom sawing
300mm, railway carriage amount see table 1, and from monolateral 6mm, its railway carriage amount is increased to 10mm, can
Effectively to improve ingot surface quality, reduce forging crack and detection defects.
Soaking: soaking will be carried out through mach round ingot casting at 470 ± 5 DEG C, and be incubated 18h.
The 5A06 aluminium alloy cast ingot prepared by the present embodiment carries out low power and fracture detects: one-level
Oxide-film and one-level are loosened, flawless, pore, field trash, white macula, crystal layer divide, light is brilliant,
Lace, primary crystal (para-crystal, metallic compound or coarsening compound, compound segregation), crystal grain
Spend≤3 grades (8 grades of grain size standards of country)；High power detects: without burning.By the circle casting of preparation
Ingot forges, and the flaw detection rate of the forging obtained is 95.5%.
Embodiment 4～6
Identical with the method that embodiment 1 prepares 5A06 aluminium alloy cast ingot, difference is ingot casting
Specification, casting speed, casting temperature, hydraulic pressure and monolateral railway carriage amount there occurs change, such as table 1
Shown in.
The parametric data table that table 1 embodiment 1～embodiment 6 relate to
The explanation of above example is only intended to help to understand that the method for the present invention and core thereof are thought
Think.It should be pointed out that, for those skilled in the art, without departing from this
On the premise of bright principle, it is also possible to the present invention is carried out some improvement and modification, these improve and
Modify in the protection domain also falling into the claims in the present invention.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of
Or the use present invention.Those skilled in the art are come by the multiple amendment to these embodiments
Saying and will be apparent from, generic principles defined herein can be without departing from the present invention's
In the case of spirit or scope, realize in other embodiments.Therefore, the present invention will not be by
It is limited to the embodiments shown herein, and is to fit to and principles disclosed herein and new
The widest scope that grain husk feature is consistent.
Claims (4)
1. a production method for 5A06 aluminium alloy cast ingot, comprises the following steps:
A) raw material of following composition is carried out melting: Si, 0～the 0.35wt% of 0～0.20wt% Fe,
The Mg of the Mn of Cu, 0.50～0.75wt%, 6.0～6.7wt%, 0～the 0.15wt%'s of 0～0.10wt%
The Ti of the Be of Zn, 0.001～0.005wt%, 0.02～0.08wt% and the aluminum of surplus, described melting
Temperature is 720 DEG C～760 DEG C, at the surface covering flux of melt during described melting, described molten
Agent includes the KCl of 40wt%, the MgCl of 46wt%2, the CaCl of≤8wt%2, the BaCl of 8wt%2；
The addition of described flux is (4～5) kg/tAl；
B) melt after melting is carried out in mixed gas refine, described mixed gas be nitrogen with
The mixed gas of chlorine；The temperature of described refine is 740 DEG C～765 DEG C, and the time of described refine is
15～20min；
C) by step B) melt that obtains carries out online degasification and on-line filtration successively, described online
The pressure of degasification is 0.15MPa～0.35MPa, and the gas flow of described online degasification is
2000～3000L/h/ roots rotors, the strainer surface spraying boron nitride coating excessively of described on-line filtration；
D) by step C) melt that obtains casts, during described casting above gate spool
Temperature be 690 DEG C～715 DEG C；The speed of described casting is 25～65mm/min, described casting
Temperature is 740 DEG C～760 DEG C, and the hydraulic pressure of described casting is 0.05～0.12MPa；
E) by step D) ingot casting that obtains is machined out, then carries out soaking, obtain 5A06
Aluminium alloy cast ingot.
Production method the most according to claim 1, it is characterised in that described nitrogen is described
88wt%～94wt% of mixed gas, described chlorine is 6wt%～12wt% of described mixed gas.
Production method the most according to claim 1, it is characterised in that described online degasification is adopted
With rotary nozzle method degasification.
Production method the most according to claim 3, it is characterised in that described rotary nozzle method
During degasification, described rotor speed is 300～500 turns/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762625.1A CN104451283B (en) | 2014-12-12 | 2014-12-12 | A kind of production method of 5A06 aluminium alloy cast ingot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762625.1A CN104451283B (en) | 2014-12-12 | 2014-12-12 | A kind of production method of 5A06 aluminium alloy cast ingot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104451283A CN104451283A (en) | 2015-03-25 |
| CN104451283B true CN104451283B (en) | 2017-01-04 |
Family
ID=52898023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410762625.1A Active CN104451283B (en) | 2014-12-12 | 2014-12-12 | A kind of production method of 5A06 aluminium alloy cast ingot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104451283B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111349801B (en) * | 2018-12-24 | 2021-09-24 | 西南铝业（集团）有限责任公司 | Preparation method of aluminum alloy ingot |
| CN114231766A (en) * | 2021-12-16 | 2022-03-25 | 西南铝业（集团）有限责任公司 | Preparation method of 5056 aluminum alloy cast ingot |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2517445B2 (en) * | 1990-06-05 | 1996-07-24 | スカイアルミニウム株式会社 | A1 alloy plate for forming diaphragm and method for manufacturing the same |
| CN102796924B (en) * | 2012-09-11 | 2014-08-27 | 东北轻合金有限责任公司 | Method for producing 180 aluminium alloy sections |
| CN103103417A (en) * | 2012-12-11 | 2013-05-15 | 龙口市丛林铝材有限公司 | Aluminum alloy profile and preparation method thereof |
-
2014
- 2014-12-12 CN CN201410762625.1A patent/CN104451283B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 5A06异型外翅片管的生产工艺研究;张培栋等;《铝加工》;20030831(第151期);第24-25页 * |
| 高镁铝合金的钠脆性;王滨滨;《黑龙江冶金》;20090930;第29卷(第3期);第12-14页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104451283A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111334690B (en) | New energy automobile battery tray high-strength aluminum alloy section and preparation method thereof | |
| CN104818398B (en) | Wheel hub aluminium alloy and preparation method thereof and aluminium alloy wheel hub | |
| CN104480355B (en) | A kind of silico-aluminum and preparation method thereof | |
| CN104451211B (en) | A kind of preparation method of 2 line aluminium alloy cast ingot | |
| CN103418923A (en) | Overlaying repair method for worn roller | |
| CN101664792A (en) | Engineering process for producing low-iron low-silicon 3004 alloy by directly cast-rolling electrolytic aluminium liquid | |
| CN104894476A (en) | Steel wire rod for building grid and preparation method of steel wire rod | |
| CN104561696A (en) | 5083 aluminum alloy plate for high-speed rail and production method thereof | |
| CN113649415B (en) | Preparation process of high-strength aluminum alloy welding wire | |
| CN103966487A (en) | Production technology for aluminium-alloy casting rod special for forging of automobile aluminium-alloy wheel hubs | |
| CN104451283B (en) | A kind of production method of 5A06 aluminium alloy cast ingot | |
| CN114457265B (en) | High-strength high-fatigue-performance 6-series aluminum alloy, gas cylinder and preparation method thereof | |
| CN105543528A (en) | Method for directly producing 6xxx-series aluminum alloy from high silicon electrolytic aluminum liquid | |
| CN104532043A (en) | Preparation method of 7 series aluminum alloy ingots | |
| CN108642344A (en) | A kind of preparation method of aerosol bottle cap aluminium alloy | |
| CN104451287A (en) | Preparation method of 5A06 aluminum alloy ingot | |
| CN105177421A (en) | Special steel plate with yield strength being 500 MPa and for forklift cross beam and preparation method of steel plate | |
| CN107955887A (en) | A kind of high-magnesium aluminum alloy cleaning molten treatment process | |
| CN107695560A (en) | 25Cr2Ni4MoV gas-shielded flux-cored wires and preparation method thereof | |
| CN113549794A (en) | Aluminum alloy tank produced by using waste aluminum alloy tank | |
| CN104630769B (en) | Flyash activity Argon arc cladding Ni base aluminium oxide titanium diboride composite coating and preparation method thereof | |
| CN115351460A (en) | High-strength rare earth aluminum alloy welding wire and preparation method thereof | |
| CN111041298A (en) | High-strength superhard 6061 aluminum alloy rod | |
| CN107739968B (en) | Use the method for iron scale production vanadium iron | |
| CN108907508A (en) | A kind of preparation method for the slag-free flux-cored wire protected using the double-deck gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |