CN108441723A - A kind of antirust high-magnesium aluminum alloy circle ingot casting and its manufacturing method - Google Patents
A kind of antirust high-magnesium aluminum alloy circle ingot casting and its manufacturing method Download PDFInfo
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- CN108441723A CN108441723A CN201810381319.1A CN201810381319A CN108441723A CN 108441723 A CN108441723 A CN 108441723A CN 201810381319 A CN201810381319 A CN 201810381319A CN 108441723 A CN108441723 A CN 108441723A
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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
- 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
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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
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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
Abstract
A kind of antirust high-magnesium aluminum alloy circle ingot casting and its manufacturing method, the present invention relates to aluminium alloy round cast ingot and manufacturing methods.Purpose is to solve the problems, such as that antirust high-magnesium aluminum alloy circle ingot casting yield rate is low.Essential element content is Mn in ingot casting：0.40%~0.8%, Mg：8.3%~9.6%, Sb：0.004%~0.05%, Ti：0.05~0.15%；It prepares：Raw material is weighed, in order charging and melting, convection current stirring imports the standing furnace of resistance reverberatory furnace, and argon-chlorine mixture gas refines, line degasification after standing, last ingot casting casting.Ingot casting yield rate of the present invention is more than 85%, solves the problems, such as that ingot casting yield rate prepared by existing method is low.The etch resistant properties of alloy and the ability of heat resistanceheat resistant crackle improve, and crack tendence reduces.The present invention is suitable for preparing antirust high-magnesium aluminum alloy and justifies ingot casting.
Description
Technical field
The present invention relates to a kind of antirust high-magnesium aluminum alloy circle ingot casting and its manufacturing methods.
Background technology
Antirust high-magnesium aluminum alloy is the rustproof aluminum alloy of Al-Mg-Mn systems, which is used for anti-corrosion, solderable, load-carrying member, such as covers
Skin, skeleton, bullet resistant material etc. have very high intensity, good stress corrosion resistant and resistance to flaking, good quenching sensitive
The advantages that property, compressive stress.But the alloy is because of complex chemical composition, phase composition is complicated and Mg constituent contents are high, in fusion process
Mg melting loss of elements is serious, therefore in previous production, usually cannot meet standard requirement because sampling Mg constituent contents after stove, cause
Full stove is scrapped.And great crackle tendency is shown in casting, founding parameter area is extremely narrow, in casting process
Frequent cracked and chemical composition waste product, melt purification control is more difficult, and flaw detection percent of pass is also relatively low, ingot casting finished product
Rate is only 50%.
Invention content
The present invention is to solve the low problems of the antirust high-magnesium aluminum alloy circle ingot casting yield rate of existing method manufacture, provide
A kind of manufacturing method of antirust high-magnesium aluminum alloy circle ingot casting ingot.
Element mass percent in antirust high-magnesium aluminum alloy of the present invention circle ingot casting is：Si is less than 0.30%, Fe and is less than
0.30%, Cu is less than 0.05%, Mn：0.40%~0.8%, Mg：8.3%~9.6%, Ni is less than 0.10%, Sb：0.004%
~0.05%, Zn is less than 0.20%, Ti：0.05~0.15%, it is surplus that Be, which is less than 0.005% and Al,；Wherein, Si, Fe, Cu,
Ni and Zn is impurity element；The lower content the better；
The manufacturing method of above-mentioned antirust high-magnesium aluminum alloy circle ingot casting carries out according to the following steps：
One, it is that Si is less than 0.30%, Fe less than 0.30%, Cu less than 0.05%, Mn by mass percentage：0.40%~
0.8%, Mg：8.3%~9.6%, Ni is less than 0.10%, Sb：0.004%~0.05%, Zn is less than 0.20%, Ti：0.05~
0.15%, Be is less than the 0.005% and Al of surplus and weighs remelted aluminum ingot, metal Mg, Al-5Sb intermediate alloy, among Al-10Mn
Alloy, Al-6Ti intermediate alloys and Al-3Be intermediate alloys are as melting raw material；
The purity of the remelted aluminum ingot is 99.70%；
Sb contents are 5% in the Al-5Sb intermediate alloys, remaining is Al；Mn contents are in Al-10Mn intermediate alloys
10%, remaining is Al；Ti contents are 6% in Al-6Ti intermediate alloys, remaining is Al；Be contents are in Al-3Be intermediate alloys
3%, remaining is Al；
Two, the remelted aluminum ingot that step 1 weighs is added in resistance reverberatory furnace, then by Al-10Mn intermediate alloys and
Al-6Ti intermediate alloys are added in resistance reverberatory furnace, and resistance reverberatory furnace is heated up most 730~750 DEG C, then in order will
Metal Mg, Al-5Sb intermediate alloy and Al-3Be intermediate alloys are added in resistance reverberatory furnace, under conditions of 730~750 DEG C
10~15min of alloy melt out of resistance reverberatory furnace both sides fire door convection current stirring resistance reverberatory furnace, sampling analysis chemistry at
Point, after chemical composition qualification, alloy melt is obtained in covering after flux；If sampling analysis chemical composition is unqualified, place is scrapped
Reason；
The chemical composition qualification is to meet national standard or meet user's specification；
The flux of the covering is by weight percent by 39%~41% KCl, 44%~45% MgCl2, 7%~
8% BaCl2With the chloride A compositions of surplus, the chloride A is NaCl, CaCl2One or both of in any proportion
The mixture of composition.
The amount of the flux of the covering is 4~6 kg/ton of melts；
Wherein, Al-10Mn intermediate alloys and Al-6Ti intermediate alloys do not require two during being added to resistance reverberatory furnace
The addition sequence of person；
Three, the alloy melt for obtaining step 2 imports the standing furnace of resistance reverberatory furnace at a temperature of 740~760 DEG C,
Be passed through argon-chlorine mixture gas refine 14~16min, be then allowed to stand 10~30min, alloy melt after being refined, by refining after
Alloy melt is transferred to online depassing unit, transfers to filter device, is then 25mm/min in casting speed by flow table
~30mm/min, casting temperature are 735~745 DEG C, and casting cooling water pressure is 0.05~0.08MPa and online sowing Al-6Ti
Under conditions of, semi-continuous casting is carried out in a crystallizer, obtains antirust high-magnesium aluminum alloy circle ingot casting；
The volume of argon gas is 94~96% in the argon chlorine gaseous mixture；
The rate that is passed through of the argon-chlorine mixture gas is 0.20~0.30m3/min；
Gas in the online depassing unit is the argon gas of purity 99.99%；
Two-layer ceramic filter disc is provided in the filter device, the aperture of first layer ceramics filter disc is 30 mesh, second layer pottery
The aperture of porcelain filter disc is 50 mesh；Melt first flows through first layer potsherd, then passes through second layer potsherd；
The casting speed of the semi-continuous casting is 28~28.3mm/min, and casting temperature is 730~740 DEG C, and casting is cold
But hydraulic pressure is 0.06~0.07MPa；
The content of Ti is 6% in the Al-6Ti silks sowed online, remaining is Al；
It is described it is online sowing Al-6Ti when speed of drilling be 490~500mm/min；
The crystallizer is circle, a diameter of 405mm；
The semi-continuous casting of progress in a crystallizer obtains a diameter of 400~405mm, and length is 4000mm~6000mm
Antirust high-magnesium aluminum alloy justify ingot casting.
It the principle of the invention and has the beneficial effect that：
1, the present invention selects different addition opportunitys for the characteristic of different-alloy, solves the abundant alloying of each element
Problem reduces chemical composition waste product；It is passed through argon-chlorine mixture gas refining, Na, Ca, Li, K etc. in melt can be effectively reduced
Alkali and alkaline-earth metal；By melt transfer to online depassing unit, the H in melt can be effectively removed2；By melt transfer to filtering
Device can effectively remove the gred；Ingot casting yield rate of the present invention is more than 85%, and the ingot casting yield rate for solving existing method preparation is low
Problem.
2, in the antirust high-magnesium aluminum alloy circle ingot casting that raw material proportioning of the present invention obtains, the content of Mg elements is that 5XXX systems aluminium closes
The highest alloy of amount of element containing Mg in gold, Mg are it will be evident that often increasing by 1% Mg to the invigoration effect of aluminium, and tensile strength about rises
High 34MPa.With solid solution balance mutually be Al8Mg5, heat treatment reinforcement acts on unobvious, therefore binary Al-Mg alloys are at heat
Manage the alloy that can not strengthen.And Al8Mg5The form of phase and distribution have apparent influence to alloy etch resistant properties, if being in along crystal boundary
Chainlike distribution will cause intercrystalline corrosion and stress corrosion cracking；In the present invention, Al8Mg5It is distributed in disperse state transgranular and brilliant
The etch resistant properties on boundary, alloy significantly improve.
3, the Mn elements that the present invention is added in Al-Mg alloys can play supplement invigoration effect, than the Mg effects of equivalent
More preferably, Mg contents can be reduced after Mn being added, while hot cracking tendency can be reduced, especially has and becomes apparent in the presence of Na.In addition
Mn can also make Al8Mg5Homogeneous precipitation keeps ingot structure uniform, improves the etch resistant properties and welding performance of alloy；
4, industrial it was verified that Al-Mg system alloy of the amount containing Mg more than 3% is in founding production, it is simple to use
Flux protection is inadequate, it is necessary to carry out alloying protection；0.005% Be below is added in the present invention in Al-Mg alloys,
Since Be diffuses to bath surface, fine and close oxidation film is generated, to reduce scaling loss and the pollution of alloy, and does not damage alloy
Corrosion stability.
5, the Sb elements that the present invention is added in the antirust high-magnesium aluminum alloy can effectively prevent Na brittleness, improve alloy
The ability of heat resistanceheat resistant crackle；
6, the present invention be added Ti can notable refining alloy crystal grain, so that the crack tendence of alloy is reduced.
Specific implementation mode：
Technical solution of the present invention is not limited to act specific implementation mode set forth below, further includes between each specific implementation mode
Arbitrary reasonable combination.
Specific implementation mode one：Present embodiment antirust high-magnesium aluminum alloy circle ingot casting in element mass percent be：Si
It is less than 0.30%, Cu less than 0.30%, Fe and is less than 0.05%, Mn：0.40%~0.8%, Mg：8.3%~9.6%, Ni is less than
0.10%, Sb：0.004%~0.05%, Zn is less than 0.20%, Ti：0.05~0.15%, Be is remaining less than 0.005% and Al
Amount；Wherein, Si, Fe, Cu, Ni and Zn are impurity element.
It present embodiment principle and has the beneficial effect that：
1, present embodiment selects different addition opportunitys for the characteristic of different-alloy, solves the abundant alloy of each element
The problem of change, reduces chemical composition waste product；Be passed through argon-chlorine mixture gas refining, can effectively reduce Na, Ca in melt,
The alkali such as Li, K and alkaline-earth metal；By melt transfer to online depassing unit, the H in melt can be effectively removed2；By melt transfer
To filter device, can effectively remove the gred；Ingot casting yield rate of the present invention is more than 85%, solves the ingot casting finished product of existing method preparation
The low problem of rate.
2, in the antirust high-magnesium aluminum alloy circle ingot casting that present embodiment raw material proportioning obtains, the content of Mg elements is 5XXX systems
The highest alloy of amount of element containing Mg in aluminium alloy, Mg are it will be evident that often increasing by 1% Mg, tensile strength to the invigoration effect of aluminium
About increase 34MPa.With solid solution balance mutually be Al8Mg5, heat treatment reinforcement acts on unobvious, therefore binary Al-Mg alloys are
It is heat-treated the alloy that can not strengthen.And Al8Mg5The form of phase and distribution have apparent influence to alloy etch resistant properties, if along crystalline substance
Boundary is in chainlike distribution, will cause intercrystalline corrosion and stress corrosion cracking；In present embodiment, Al8Mg5It is distributed in disperse state
The etch resistant properties of transgranular and crystal boundary, alloy significantly improve.
3, the Mn elements that present embodiment is added in Al-Mg alloys can play supplement invigoration effect, than the Mg of equivalent
Effect is more preferable, can reduce Mg contents after Mn is added, while can reduce hot cracking tendency, especially has and becomes apparent in the presence of Na.
In addition Mn can also make Al8Mg5Homogeneous precipitation keeps ingot structure uniform, improves the etch resistant properties and welding performance of alloy；
4, industrial it was verified that Al-Mg system alloy of the amount containing Mg more than 3% is in founding production, it is simple to use
Flux protection is inadequate, it is necessary to carry out alloying protection；Present embodiment is added 0.005% or less in Al-Mg alloys
Be generate fine and close oxidation film since Be diffuses to bath surface, to reduce scaling loss and the pollution of alloy, and do not damage
The corrosion stability of evil alloy.
5, the Sb elements that present embodiment is added in the antirust high-magnesium aluminum alloy can effectively prevent Na brittleness, improve
The ability of alloy heat resistanceheat resistant crackle；
6, present embodiment be added Ti can notable refining alloy crystal grain, so that the crack tendence of alloy is reduced.
Specific implementation mode two：Present embodiment antirust high-magnesium aluminum alloy justify ingot casting manufacturing method according to the following steps into
Row：
One, it is that Si is less than 0.30%, Fe less than 0.30%, Cu less than 0.05%, Mn by mass percentage：0.40%~
0.8%, Mg：8.3%~9.6%, Ni is less than 0.10%, Sb：0.004%~0.05%, Zn is less than 0.20%, Ti：0.05~
0.15%, Be is less than the 0.005% and Al of surplus and weighs remelted aluminum ingot, metal Mg, Al-5Sb intermediate alloy, among Al-10Mn
Alloy, Al-6Ti intermediate alloys and Al-3Be intermediate alloys are as melting raw material；
Two, the remelted aluminum ingot that step 1 weighs is added in resistance reverberatory furnace, then by Al-10Mn intermediate alloys and
Al-6Ti intermediate alloys are added in resistance reverberatory furnace, and resistance reverberatory furnace is heated up most 730~750 DEG C, then in order will
Metal Mg, Al-5Sb intermediate alloy and Al-3Be intermediate alloys are added in resistance reverberatory furnace, under conditions of 730~750 DEG C
10~15min of alloy melt out of resistance reverberatory furnace both sides fire door convection current stirring resistance reverberatory furnace, sampling analysis chemistry at
Point, after chemical composition qualification, alloy melt is obtained in covering after flux；If sampling analysis chemical composition is unqualified, place is scrapped
Reason；
Three, the alloy melt for obtaining step 2 imports the standing furnace of resistance reverberatory furnace at a temperature of 740~760 DEG C,
Be passed through argon-chlorine mixture gas refine 14~16min, be then allowed to stand 10~30min, alloy melt after being refined, by refining after
Alloy melt is transferred to online depassing unit, transfers to filter device, is then 25mm/min in casting speed by flow table
~30mm/min, casting temperature are 735~745 DEG C, and casting cooling water pressure is 0.05~0.08MPa and online sowing Al-6Ti
Under conditions of, semi-continuous casting is carried out in a crystallizer, obtains antirust high-magnesium aluminum alloy circle ingot casting.
It present embodiment principle and has the beneficial effect that：
1, present embodiment selects different addition opportunitys for the characteristic of different-alloy, solves the abundant alloy of each element
The problem of change, reduces chemical composition waste product；Be passed through argon-chlorine mixture gas refining, can effectively reduce Na, Ca in melt,
The alkali such as Li, K and alkaline-earth metal；By melt transfer to online depassing unit, the H in melt can be effectively removed2；By melt transfer
To filter device, can effectively remove the gred；Ingot casting yield rate of the present invention is more than 85%, solves the ingot casting finished product of existing method preparation
The low problem of rate.
2, in the antirust high-magnesium aluminum alloy circle ingot casting that present embodiment raw material proportioning obtains, the content of Mg elements is 5XXX systems
The highest alloy of amount of element containing Mg in aluminium alloy, Mg are it will be evident that often increasing by 1% Mg, tensile strength to the invigoration effect of aluminium
About increase 34MPa.With solid solution balance mutually be Al8Mg5, heat treatment reinforcement acts on unobvious, therefore binary Al-Mg alloys are
It is heat-treated the alloy that can not strengthen.And Al8Mg5The form of phase and distribution have apparent influence to alloy etch resistant properties, if along crystalline substance
Boundary is in chainlike distribution, will cause intercrystalline corrosion and stress corrosion cracking；In present embodiment, Al8Mg5It is distributed in disperse state
The etch resistant properties of transgranular and crystal boundary, alloy significantly improve.
3, the Mn elements that present embodiment is added in Al-Mg alloys can play supplement invigoration effect, than the Mg of equivalent
Effect is more preferable, can reduce Mg contents after Mn is added, while can reduce hot cracking tendency, especially has and becomes apparent in the presence of Na.
In addition Mn can also make Al8Mg5Homogeneous precipitation keeps ingot structure uniform, improves the etch resistant properties and welding performance of alloy；
4, industrial it was verified that Al-Mg system alloy of the amount containing Mg more than 3% is in founding production, it is simple to use
Flux protection is inadequate, it is necessary to carry out alloying protection；Present embodiment is added 0.005% or less in Al-Mg alloys
Be generate fine and close oxidation film since Be diffuses to bath surface, to reduce scaling loss and the pollution of alloy, and do not damage
The corrosion stability of evil alloy.
5, the Sb elements that present embodiment is added in the antirust high-magnesium aluminum alloy can effectively prevent Na brittleness, improve
The ability of alloy heat resistanceheat resistant crackle；
6, present embodiment be added Ti can notable refining alloy crystal grain, so that the crack tendence of alloy is reduced.
Specific implementation mode three：Present embodiment is unlike specific implementation mode or two：Al-5Sb described in step 1
Sb contents are 5% in intermediate alloy, remaining is Al；Mn contents are 10% in Al-10Mn intermediate alloys, remaining is Al；Al-6Ti
Ti contents are 6% in intermediate alloy, remaining is Al；Be contents are 3% in Al-3Be intermediate alloys, remaining is Al.Other steps
It is identical with embodiment two with parameter.
Specific implementation mode four：Present embodiment is unlike specific implementation mode two or three：The flux of the covering
By weight percent by 39%~41% KCl, 44%~45% MgCl2, 7%~8% BaCl2With the chloride A of surplus
Composition, the chloride A are NaCl, CaCl2One or both of the mixture that forms in any proportion.Other steps and ginseng
Number is identical as specific implementation mode two or three.
Specific implementation mode five：Unlike one of present embodiment and specific implementation mode two to four：Described in step 2
The amount of the flux of covering is 4~6 kg/ton of melts.Other steps and parameter are identical as one of specific implementation mode two to four.
Specific implementation mode six：Unlike one of present embodiment and specific implementation mode two to five：Described in step 3
The volume of argon gas is 94~96% in argon chlorine gaseous mixture；Argon-chlorine mixture gas described in step 3 be passed through rate be 0.20~
0.30m3/min.Other steps and parameter are identical as one of specific implementation mode two to five.
Specific implementation mode seven：Unlike one of present embodiment and specific implementation mode 2 one to six：Step 3 walks
Two-layer ceramic filter disc is provided in rapid three filter device, the aperture of first layer ceramics filter disc is 30 mesh, second layer ceramic filtering
The aperture of piece is 50 mesh.Other steps and parameter are identical as one of specific implementation mode two to six.
Specific implementation mode eight：Unlike one of present embodiment and specific implementation mode 2 one to seven：Step 3 institute
The casting speed for stating semi-continuous casting is 28~28.3mm/min, and casting temperature is 730~740 DEG C, and casting cooling water pressure is
0.06~0.07MPa.Other steps and parameter are identical as one of specific implementation mode two to seven.
Specific implementation mode nine：Unlike one of present embodiment and specific implementation mode two to eight：Described in step 3
Speed of drilling when sowing Al-6Ti online is 490~500mm/min.Other steps and parameter and specific implementation mode two to
One of eight is identical.
Specific implementation mode ten：Unlike one of present embodiment and specific implementation mode two to nine：Described in step 3
Semi-continuous casting is carried out in a crystallizer and obtains a diameter of 400~405mm, and length is the high magnalium of antirust of 4000mm~6000mm
Alloy justifies ingot casting.Other steps and parameter are identical as one of specific implementation mode two to nine.
Specific implementation mode 11：Unlike one of present embodiment and specific implementation mode two to ten：Step 1 institute
The purity for stating remelted aluminum ingot is 99.70%.Other steps and parameter are identical as one of specific implementation mode two to ten.
Specific implementation mode 12：Present embodiment is unlike specific implementation mode two to one of 11：Step 3
Gas in the online depassing unit is the argon gas of purity 99.99%.Other steps and parameter and specific implementation mode two to
One of 11 is identical.
Specific implementation mode 13：Present embodiment is unlike specific implementation mode two to one of 12：Step 3
The content of Ti is 6% in the Al-6Ti silks sowed online, remaining is Al.Other steps and parameter and specific implementation mode two
It is identical to one of 12.
Specific implementation mode 14：Present embodiment is unlike specific implementation mode two to one of 13：Step 3
The crystallizer is circle, a diameter of 405mm.Other steps and parameter are identical as specific implementation mode two to one of 13.
Beneficial effects of the present invention are verified using following embodiment：
Embodiment 1：
The manufacturing method of the present embodiment antirust high-magnesium aluminum alloy circle ingot casting carries out according to the following steps：
One, it is that Si is less than 0.30%, Fe less than 0.30%, Cu less than 0.05%, Mn by mass percentage：0.55、Mg：
9.3%, Ni is less than 0.10%, Sb：0.02%, Zn is less than 0.20%, Ti：0.065%, Be 0.001% and the Al of surplus are weighed
Remelted aluminum ingot, metal Mg, Al-5Sb intermediate alloy, Al-10Mn intermediate alloys, Al-6Ti intermediate alloys and Al-3Be intermediate alloys
As melting raw material；
The purity of the remelted aluminum ingot is 99.70%；Sb contents are 5% in the Al-5Sb intermediate alloys, remaining is Al；
Mn contents are 10% in Al-10Mn intermediate alloys, remaining is Al；Ti contents are 6% in Al-6Ti intermediate alloys, remaining is Al；
Be contents are 3% in Al-3Be intermediate alloys, remaining is Al；
Two, the remelted aluminum ingot that step 1 weighs is added in resistance reverberatory furnace, then by Al-10Mn intermediate alloys and
Al-6Ti intermediate alloys are added in resistance reverberatory furnace, resistance reverberatory furnace are heated up most 740 DEG C, then in order by metal
Mg, Al-5Sb intermediate alloy and Al-3Be intermediate alloys are added in resistance reverberatory furnace, are reflected from resistance under conditions of 740 DEG C
Alloy melt 10min in the both sides fire door convection current stirring resistance reverberatory furnace of stove, sampling analysis chemical composition, chemical composition are qualified
Afterwards, in covering alloy melt is obtained after flux；
The flux of the covering is by weight percent by 40% KCl, 45% MgCl2, 8% BaCl2With surplus
NaCl is formed；The amount of the flux of the covering is 5 kg/ton of melts；
Wherein, Al-10Mn intermediate alloys and Al-6Ti intermediate alloys do not require two during being added to resistance reverberatory furnace
The addition sequence of person；
Three, the alloy melt for obtaining step 2 imports the standing furnace of resistance reverberatory furnace at a temperature of 750 DEG C, is passed through argon
Chlorine mixed gas refine 15min, be then allowed to stand 20min, alloy melt after being refined, by refining after alloy melt be transferred to
Online depassing unit transfers to filter device, is then 30mm/min, casting temperature 740 in casting speed by flow table
DEG C, under conditions of casting cooling water pressure is 0.06MPa and online sowing Al-6Ti, semi-continuous casting is carried out in a crystallizer,
Obtain antirust high-magnesium aluminum alloy circle ingot casting；
The volume of argon gas is 95% in the argon chlorine gaseous mixture；
The rate that is passed through of the argon-chlorine mixture gas is 0.25m3/min；
Gas in the online depassing unit is the argon gas of purity 99.99%；
Two-layer ceramic filter disc is provided in the filter device, the aperture of first layer ceramics filter disc is 30 mesh, second layer pottery
The aperture of porcelain filter disc is 50 mesh；
The casting speed of the semi-continuous casting is 28.3mm/min, and casting temperature is 740 DEG C, and casting cooling water pressure is
0.07MPa；
The content of Ti is 6% in the Al-6Ti silks sowed online, remaining is Al；
It is described it is online sowing Al-6Ti when speed of drilling be 500mm/min；
The crystallizer is circle, a diameter of 405mm；
The semi-continuous casting of progress in a crystallizer obtains a diameter of 405mm, and length is the high magnalium of antirust of 5000mm
Alloy justifies ingot casting；
The defects of chemical composition that embodiment 1 obtains antirust high-magnesium aluminum alloy circle ingot casting is qualified, surface flawless, slag inclusion,
Yield rate has reached 86%.
Embodiment 2：
The manufacturing method of the present embodiment antirust high-magnesium aluminum alloy circle ingot casting carries out according to the following steps：
One, it is that Si is less than 0.30%, Fe less than 0.30%, Cu less than 0.05%, Mn by mass percentage：0.60、Mg：
9.2%, Ni is less than 0.10%, Sb：0.015%, Zn is less than 0.20%, Ti：0.063%, Be 0.0015% and the Al of surplus claim
It takes and is closed among remelted aluminum ingot, metal Mg, Al-5Sb intermediate alloy, Al-10Mn intermediate alloys, Al-6Ti intermediate alloys and Al-3Be
Gold is used as melting raw material；
The purity of the remelted aluminum ingot is 99.70%；Sb contents are 5% in the Al-5Sb intermediate alloys, remaining is Al；
Mn contents are 10% in Al-10Mn intermediate alloys, remaining is Al；Ti contents are 6% in Al-6Ti intermediate alloys, remaining is Al；
Be contents are 3% in Al-3Be intermediate alloys, remaining is Al；
Two, the remelted aluminum ingot that step 1 weighs is added in resistance reverberatory furnace, then by Al-10Mn intermediate alloys and
Al-6Ti intermediate alloys are added in resistance reverberatory furnace, resistance reverberatory furnace are heated up most 750 DEG C, then in order by metal
Mg, Al-5Sb intermediate alloy and Al-3Be intermediate alloys are added in resistance reverberatory furnace, are reflected from resistance under conditions of 740 DEG C
Alloy melt 15min in the both sides fire door convection current stirring resistance reverberatory furnace of stove, sampling analysis chemical composition, chemical composition are qualified
Afterwards, in covering alloy melt is obtained after flux；
The flux of the covering is by weight percent by 40% KCl, 45% MgCl2, 8% BaCl2With surplus
NaCl is formed；
The amount of the flux of the covering is 5 kg/ton of melts；
Wherein, Al-10Mn intermediate alloys and Al-6Ti intermediate alloys do not require two during being added to resistance reverberatory furnace
The addition sequence of person；
Three, the alloy melt for obtaining step 2 imports the standing furnace of resistance reverberatory furnace at a temperature of 755 DEG C, is passed through argon
Chlorine mixed gas refine 15min, be then allowed to stand 15min, alloy melt after being refined, by refining after alloy melt be transferred to
Online depassing unit transfers to filter device, is then 28mm/min, casting temperature 735 in casting speed by flow table
DEG C, under conditions of casting cooling water pressure is 0.065MPa and online sowing Al-6Ti, semi-continuous casting is carried out in a crystallizer,
Obtain antirust high-magnesium aluminum alloy circle ingot casting；
The volume of argon gas is 95% in the argon chlorine gaseous mixture；
The rate that is passed through of the argon-chlorine mixture gas is 0.25m3/min；
Gas in the online depassing unit is the argon gas of purity 99.99%；
Two-layer ceramic filter disc is provided in the filter device, the aperture of first layer ceramics filter disc is 30 mesh, second layer pottery
The aperture of porcelain filter disc is 50 mesh；
The casting speed of the semi-continuous casting is 28.3mm/min, and casting temperature is 740 DEG C, and casting cooling water pressure is
0.07MPa；
The content of Ti is 6% in the Al-6Ti silks sowed online, remaining is Al；
It is described it is online sowing Al-6Ti when speed of drilling be 500mm/min；
The crystallizer is circle, a diameter of 405mm；
The semi-continuous casting of progress in a crystallizer obtains a diameter of 405mm, and length is the high magnalium of antirust of 5000mm
Alloy justifies ingot casting；
The defects of chemical composition that embodiment 2 obtains antirust high-magnesium aluminum alloy circle ingot casting is qualified, surface flawless, slag inclusion,
Yield rate has reached 85.5%.
Embodiment 3：
The manufacturing method of the present embodiment antirust high-magnesium aluminum alloy circle ingot casting carries out according to the following steps：
One, it is that Si is less than 0.30%, Fe less than 0.30%, Cu less than 0.05%, Mn by mass percentage：0.55、Mg：
9.3%, Ni is less than 0.10%, Sb：0.004%, Zn is less than 0.20%, Ti：0.065%, Be 0.001% and the Al of surplus claim
It takes and is closed among remelted aluminum ingot, metal Mg, Al-5Sb intermediate alloy, Al-10Mn intermediate alloys, Al-6Ti intermediate alloys and Al-3Be
Gold is used as melting raw material；
The purity of the remelted aluminum ingot is 99.70%；Sb contents are 5% in the Al-5Sb intermediate alloys, remaining is Al；
Mn contents are 10% in Al-10Mn intermediate alloys, remaining is Al；Ti contents are 6% in Al-6Ti intermediate alloys, remaining is Al；
Be contents are 3% in Al-3Be intermediate alloys, remaining is Al；
Two, the remelted aluminum ingot that step 1 weighs is added in resistance reverberatory furnace, then by Al-10Mn intermediate alloys and
Al-6Ti intermediate alloys are added in resistance reverberatory furnace, resistance reverberatory furnace are heated up most 740 DEG C, then in order by metal
Mg, Al-5Sb intermediate alloy and Al-3Be intermediate alloys are added in resistance reverberatory furnace, are reflected from resistance under conditions of 740 DEG C
Alloy melt 10min in the both sides fire door convection current stirring resistance reverberatory furnace of stove, sampling analysis chemical composition, chemical composition are qualified
Afterwards, in covering alloy melt is obtained after flux；
The flux of the covering is by weight percent by 40% KCl, 45% MgCl2, 8% BaCl2With surplus
NaCl is formed；
The amount of the flux of the covering is 5 kg/ton of melts；
Wherein, Al-10Mn intermediate alloys and Al-6Ti intermediate alloys do not require two during being added to resistance reverberatory furnace
The addition sequence of person；
Three, the alloy melt for obtaining step 2 imports the standing furnace of resistance reverberatory furnace at a temperature of 750 DEG C, is passed through argon
Chlorine mixed gas refine 15min, be then allowed to stand 20min, alloy melt after being refined, by refining after alloy melt be transferred to
Online depassing unit transfers to filter device, is then 30mm/min, casting temperature 740 in casting speed by flow table
DEG C, under conditions of casting cooling water pressure is 0.06MPa and online sowing Al-6Ti, semi-continuous casting is carried out in a crystallizer,
Obtain antirust high-magnesium aluminum alloy circle ingot casting；
The volume of argon gas is 95% in the argon chlorine gaseous mixture；
The rate that is passed through of the argon-chlorine mixture gas is 0.25m3/min；
Gas in the online depassing unit is the argon gas of purity 99.99%；
Two-layer ceramic filter disc is provided in the filter device, the aperture of first layer ceramics filter disc is 30 mesh, second layer pottery
The aperture of porcelain filter disc is 50 mesh；
The casting speed of the semi-continuous casting is 28.3mm/min, and casting temperature is 740 DEG C, and casting cooling water pressure is
0.07MPa；
The content of Ti is 6% in the Al-6Ti silks sowed online, remaining is Al；
It is described it is online sowing Al-6Ti when speed of drilling be 500mm/min；
The crystallizer is circle, a diameter of 405mm；
The semi-continuous casting of progress in a crystallizer obtains a diameter of 405mm, and length is the high magnalium of antirust of 5000mm
Alloy justifies ingot casting；
The defects of chemical composition that embodiment 3 obtains antirust high-magnesium aluminum alloy circle ingot casting is qualified, surface flawless, slag inclusion,
Yield rate has reached 87%.
Claims (10)
1. a kind of antirust high-magnesium aluminum alloy justifies ingot casting, it is characterised in that：The antirust high-magnesium aluminum alloy justifies the element quality in ingot casting
Percentage is：Si is less than 0.30%, Fe and is less than 0.30%, Cu less than 0.05%, Mn：0.40%~0.8%, Mg：8.3%~
9.6%, Ni is less than 0.10%, Sb：0.004%~0.05%, Zn is less than 0.20%, Ti：0.05~0.15%, Be is less than
0.005% and Al is surplus；Wherein, Si, Fe, Cu, Ni and Zn are impurity element.
2. the manufacturing method of antirust high-magnesium aluminum alloy circle ingot casting as described in claim 1, it is characterised in that：The manufacturing method is pressed
Following steps carry out：
One, it is that Si is less than 0.30%, Fe less than 0.30%, Cu less than 0.05%, Mn by mass percentage：0.40%~0.8%,
Mg：8.3%~9.6%, Ni is less than 0.10%, Sb：0.004%~0.05%, Zn is less than 0.20%, Ti：0.05~0.15%,
Be is less than 0.005% and the Al of surplus weighs remelted aluminum ingot, metal Mg, Al-5Sb intermediate alloy, Al-10Mn intermediate alloys, Al-
6Ti intermediate alloys and Al-3Be intermediate alloys are as melting raw material；
Two, the remelted aluminum ingot that step 1 weighs is added in resistance reverberatory furnace, then by Al-10Mn intermediate alloys and Al-6Ti
Intermediate alloy is added in resistance reverberatory furnace, by resistance reverberatory furnace heat up most 730~750 DEG C, then in order by metal Mg,
Al-5Sb intermediate alloys and Al-3Be intermediate alloys are added in resistance reverberatory furnace, anti-from resistance under conditions of 730~750 DEG C
Penetrate 10~15min of alloy melt in the both sides fire door convection current stirring resistance reverberatory furnace of stove, sampling analysis chemical composition, chemistry at
After division lattice, alloy melt is obtained in covering after flux；If sampling analysis chemical composition is unqualified, processing is scrapped；
Three, the alloy melt for obtaining step 2 imports the standing furnace of resistance reverberatory furnace at a temperature of 740~760 DEG C, is passed through
Argon-chlorine mixture gas refine 14~16min, be then allowed to stand 10~30min, alloy melt after being refined, by refining after alloy
Melt transfer transfers to filter device to online depassing unit, then by flow table casting speed be 25mm/min~
30mm/min, casting temperature are 735~745 DEG C, and casting cooling water pressure is 0.05~0.08MPa and online sowing Al-6Ti
Under the conditions of, semi-continuous casting is carried out in a crystallizer, obtains antirust high-magnesium aluminum alloy circle ingot casting.
3. the manufacturing method of antirust high-magnesium aluminum alloy circle ingot casting according to claim 2, it is characterised in that：Described in step 1
Sb contents are 5% in Al-5Sb intermediate alloys, remaining is Al；Mn contents are 10% in Al-10Mn intermediate alloys, remaining is Al；
Ti contents are 6% in Al-6Ti intermediate alloys, remaining is Al；Be contents are 3% in Al-3Be intermediate alloys, remaining is Al.
4. the manufacturing method of antirust high-magnesium aluminum alloy circle ingot casting according to claim 2 or 3, it is characterised in that：Step 2
The flux of the covering is by weight percent by 39%~41% KCl, 44%~45% MgCl2, 7%~8% BaCl2
With the chloride A compositions of surplus, the chloride A is NaCl, CaCl2One or both of the mixing that forms in any proportion
Object.
5. the manufacturing method of antirust high-magnesium aluminum alloy circle ingot casting according to claim 4, it is characterised in that：Described in step 2
The amount of the flux of covering is 4~6 kg/ton of melts.
6. the manufacturing method of the antirust high-magnesium aluminum alloy circle ingot casting according to claim 2,3 or 5, it is characterised in that：Step
The volume of argon gas is 94~96% in the three argon chlorine gaseous mixtures；The rate that is passed through of argon-chlorine mixture gas described in step 3 is 0.20
~0.30m3/min。
7. the manufacturing method of antirust high-magnesium aluminum alloy circle ingot casting according to claim 6, it is characterised in that：Described in step 3
Two-layer ceramic filter disc is provided in filter device, the aperture of first layer ceramics filter disc is 30 mesh, the hole of second layer ceramics filter disc
Diameter is 50 mesh.
8. the manufacturing method of antirust high-magnesium aluminum alloy circle ingot casting according to claim 7, it is characterised in that：Described in step 3
The casting speed of semi-continuous casting is 28~28.3mm/min, and casting temperature is 730~740 DEG C, and casting cooling water pressure is 0.06
~0.07MPa.
9. the manufacturing method of antirust high-magnesium aluminum alloy circle ingot casting according to claim 8, it is characterised in that：Described in step 3
Speed of drilling when sowing Al-6Ti online is 490~500mm/min.
10. the manufacturing method of antirust high-magnesium aluminum alloy circle ingot casting according to claim 9, it is characterised in that：Step 3 institute
It states progress semi-continuous casting in a crystallizer and obtains a diameter of 400~405mm, length is the high magnesium of antirust of 4000mm~6000mm
Aluminium alloy round cast ingot.
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