CN106967907A - The Ship body big specification rectangle ingot of aluminium alloy and its manufacture method - Google Patents

The Ship body big specification rectangle ingot of aluminium alloy and its manufacture method Download PDF

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Publication number
CN106967907A
CN106967907A CN201710325403.7A CN201710325403A CN106967907A CN 106967907 A CN106967907 A CN 106967907A CN 201710325403 A CN201710325403 A CN 201710325403A CN 106967907 A CN106967907 A CN 106967907A
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China
Prior art keywords
aluminium
alloy
ship body
ingot
big specification
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CN201710325403.7A
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Inventor
甄湛鑫
王国军
李海仙
张岩
贾宁
赵扬
张珺玲
孙庆福
石广福
姜德俊
王英军
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Northeast Light Alloy Co Ltd
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Northeast Light Alloy Co Ltd
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Priority to CN201710325403.7A priority Critical patent/CN106967907A/en
Publication of CN106967907A publication Critical patent/CN106967907A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/003—Aluminium alloys
    • 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
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The Ship body big specification rectangle ingot of aluminium alloy and its manufacture method, it is related to a kind of manufacture method of the big specification rectangle ingot of Ship body aluminium alloy.The present invention is the problem of mechanical property is low in order to solve the Ship body of existing method manufacture with aluminium alloy big specification rectangle ingot.Rectangle ingot of the present invention is made up of Mn, Mg, Zr, Er, Ti and Al, preparation method：First, raw material is weighed；2nd, aluminium alloy melt is prepared；3rd, semi-continuous casting.Present invention employs the scientific matching of aluminium alloy cast ingot raw material and smelting technology, it is ensured that the melt of alloy is pure and surface quality of ingot casting；By adding a small amount of er element in high magnesium alloy, enable aluminum alloy to intensity and improve more than 15%, heat endurance improves 50 DEG C or so.The invention belongs to the big specification rectangle ingot manufacture field of aluminium alloy.

Description

The Ship body big specification rectangle ingot of aluminium alloy and its manufacture method
Technical field
The present invention relates to a kind of manufacture method of Ship body with the big specification rectangle ingot of aluminium alloy.
Background technology
With the development of science and technology, shipping industry has new developing direction in materials science field again.Material and Technique more environmentally friendly aluminium-alloy hull after after steel hull, as extensive use is commercially available and greatly develop and One emerging Ship body.And the feature of environmental protection of Ship body and lightweight are the important indicators of hull material selection.Aluminium boat When body has suitable intensity with fibre reinforced plastic hull, ship structure can be made to mitigate 50%.Thus aluminum ship is under case of heavy load, It is more easy to raise speed than steel ship, slides, navigation is more steady, comfortable, and operation is also more flexible, and dramatically reduces Oil consumption.The big specification rectangle ingot of a kind of Ship body aluminium alloy newly developed has advantages below：It is that proportion is small first, is only The 1/3 of steel, can mitigate ship weight, reduce energy consumption, increase loading capacity；Next to that corrosion resistance is good, the expenses such as oiling are reduced, extension makes Use the time limit；Three be that welding, machine-shaping property are good, beneficial to post-production；Last aluminium waste is easily recycled, and can be recycled.
The content of the invention
The invention aims to solve the Ship body big specification rectangle ingot of aluminium alloy of existing method manufacture, mechanics There is provided a kind of Ship body big specification rectangle ingot of aluminium alloy and its manufacture method for the problem of performance is low.
Ship body is with the big specification rectangle ingot of aluminium alloy by mass percentage by 0.4%~0.7%Mn, 4.4%~4.8% Mg, 0.10%~0.15%Zr, 0.2%~0.3%Er, the Al compositions of 0.01~0.05%Ti and surplus；And the ship ship Body is less than 0.20% with impurity F e and Zn mass percent in the big specification rectangle ingot of aluminium alloy, and impurity Si mass percents are less than 0.12%, impurity Cu mass percent are less than 0.1%.
The manufacture method is as follows：
First, raw material is weighed：By mass percentage for 0.4%~0.7%Mn, 4.4%~4.8%Mg, 0.10%~ 0.15%Zr, 0.2%~0.3%Er, the Al of 0.01~0.05%Ti and surplus ratio, weigh fine aluminium ingot, close in the middle of aluminium manganese Gold, aluminium zirconium hardener, aluminium erbium intermediate alloy, aluminium titanium intermediate alloy and magnesium metal；
2nd, aluminium alloy melt is prepared：Fine aluminium ingot is added in resistance reverberatory furnace first, then adds in the middle of aluminium manganese and closes Gold, aluminium zirconium hardener and aluminium erbium intermediate alloy, until completely melted plus magnesium metal and aluminium titanium intermediate alloy stirring 5min~ 10min, uses Ar gases being passed through speed for 0.1~0.15m310min is refined under conditions of/min, upper 20~30kg is covered and melts After agent, alloy melt is obtained；
3rd, semi-continuous casting：Under conditions of temperature is 750 DEG C~760 DEG C, the alloy melt that step 2 is obtained is imported The standing furnace of resistance reverberatory furnace, is passed through Ar gases, is being passed through speed for 0.1~0.15m3Refined under conditions of/min after 15min, 30min is stood, is then that 50mm/min~55mm/min, casting temperature are 725 DEG C~740 DEG C, casting cooling in casting speed Hydraulic pressure is to click and enter the Al-Ti silks that Ti contents are 6% under conditions of 0.03MPa~0.10MPa, is 500mm/min in casting speed Under conditions of carry out semi-continuous casting, obtain the big specification rectangle ingot of Ship body aluminium alloy；
The Ship body is less than 0.20%, impurity with impurity F e and Zn mass percent in the big specification rectangle ingot of aluminium alloy Si mass percents are less than 0.12%, and impurity Cu mass percents are less than 0.1%.
The purity of fine aluminium ingot is 99.7% in step one.
Flux described in step 2 is by weight percent by 50% KCl, 45% MgCl2And 5% BaCl2Composition； Or flux described in step 2 is by weight percent by 40% KCl, 45% MgCl2, 8% BaCl2, 7% NaCl +CaCl2Composition.
Step 2 be more than 780 DEG C under conditions of add aluminium erbium intermediate alloy, add after aluminium erbium intermediate alloy per 20min Stirring once, is stirred 3 times altogether.Melt temperature is kept to be 780 DEG C in whipping process in step 2.
Step 3 is passed through Ar-Cl2Mixed gas, is being passed through speed for 0.1~0.15m315min is refined under conditions of/min, Stand 30min.
The effect of each element in the present invention：
1.Mg effect：
The main function of Mg elements is to form a series of soluble metal chemical combination by solution strengthening and with other elements Thing hardening constituent improves the intensity and corrosion resistance of alloy.And enable aluminum alloy to good solderability and have moderate strength.
2.Mn effect：
Mn is in the alloy as auxiliary constituent element, on the one hand, can prevent the recrystallization process of aluminium alloy, improves recrystallization temperature Degree, and recrystal grain is significantly refined, the effect of grain coarsening when preventing from deforming after annealing.On the other hand, by solution strengthening, Eliminate Fe adverse effect.Mn can also improve corrosion stability, weldability.The Mn elements that less than 1% is added in high magnesium alloy can To play supplement invigoration effect, and reduce hot cracking tendency.
3.Er effect：
Added in aluminium alloy Er elements can effective refining alloy as-cast grain, increase alloy heat endurance and by force Degree, hardness.Because Er is main with Al in aluminium alloy3The form of Er particles is present, this particle and Al3Sc and Al3Zr is tied Structure is all cubic system, belongs to Pm3m space groups, and base aluminum coherence or half coherence, with the features such as fusing point is high, stability is good.Er It is main with Al in the alloy3Er form is present, and tiny Al3Er can as the heterogeneous forming core of η phases core, can improve The mechanical property of aging state alloy.
4.Ti effect：
Ti elements primarily serve the effect of crystal grain thinning, but in order to prevent the generation of crystallization compound containing Ti, Ti's adds Enter amount general control within 0.05%.
The present invention has advantages below：
Present invention employs the scientific matching of aluminium alloy cast ingot raw material and smelting technology, it is ensured that the melt of alloy it is pure and The surface quality of ingot casting；By adding a small amount of er element in high magnesium alloy, intensity raising more than 15% is enabled aluminum alloy to, it is thermally-stabilised Property improve 50 DEG C or so；And er element has the advantages that aboundresources and cheap, this causes Development of Novel commercial scale to contain Erbium high-performance aluminium alloy is possibly realized；Advantage is being provided for the internal soundness and surface quality of improvement ingot casting, the present invention Characteristic for different-alloy selects different addition opportunity, smelting temperature and stirring means, solves the abundant alloy of each element The problem of change, ingot casting yield rate increases；Solve the ship of existing method preparation aluminium alloy cast ingot mechanical strength and hard The problem of spending low.
Embodiment
Technical solution of the present invention is not limited to act embodiment set forth below, in addition between each embodiment Any combination.
Embodiment one：Present embodiment Ship body with the big specification rectangle ingot of aluminium alloy by mass percentage by 0.4%~0.7%Mn, 4.4%~4.8%Mg, 0.10%~0.15%Zr, 0.2%~0.3%Er, 0.01~0.05%Ti Constituted with the Al of surplus；And the Ship body is less than with impurity F e and Zn mass percent in the big specification rectangle ingot of aluminium alloy 0.20%, impurity Si mass percent are less than 0.12%, and impurity Cu mass percents are less than 0.1%.
The effect of present embodiment each element：
1.Mg effect：
The main function of Mg elements is to form a series of soluble metal chemical combination by solution strengthening and with other elements Thing hardening constituent improves the intensity and corrosion resistance of alloy.And enable aluminum alloy to good solderability and have moderate strength.
2.Mn effect：
Mn is in the alloy as auxiliary constituent element, on the one hand, can prevent the recrystallization process of aluminium alloy, improves recrystallization temperature Degree, and recrystal grain is significantly refined, the effect of grain coarsening when preventing from deforming after annealing.On the other hand, by solution strengthening, Eliminate Fe adverse effect.Mn can also improve corrosion stability, weldability.The Mn elements that less than 1% is added in high magnesium alloy can To play supplement invigoration effect, and reduce hot cracking tendency.
3.Er effect：
Added in aluminium alloy Er elements can effective refining alloy as-cast grain, increase alloy heat endurance and by force Degree, hardness.Because Er is main with Al in aluminium alloy3The form of Er particles is present, this particle and Al3Sc and Al3Zr is tied Structure is all cubic system, belongs to Pm3m space groups, and base aluminum coherence or half coherence, with the features such as fusing point is high, stability is good.Er It is main with Al in the alloy3Er form is present, and tiny Al3Er can as the heterogeneous forming core of η phases core, can improve The mechanical property of aging state alloy.
4.Ti effect：
Ti elements primarily serve the effect of crystal grain thinning, but in order to prevent the generation of crystallization compound containing Ti, Ti's adds Enter amount general control within 0.05%.
Embodiment two：Present embodiment and Ship body unlike embodiment one are with the big rule of aluminium alloy Lattice rectangle ingot is melted by the Al of 0.5%Mn, 4.7%Mg, 0.12%Zr, 0.25%Er, 0.02%Ti and surplus by mass percentage Refine into.It is other identical with embodiment one.
Embodiment three：The big specification rectangle ingot manufacture method of aluminium alloy of Ship body described in embodiment one It is as follows：
First, raw material is weighed：By mass percentage for 0.4%~0.7%Mn, 4.4%~4.8%Mg, 0.10%~ 0.15%Zr, 0.2%~0.3%Er, the Al of 0.01~0.05%Ti and surplus ratio, weigh fine aluminium ingot, close in the middle of aluminium manganese Gold, aluminium zirconium hardener, aluminium erbium intermediate alloy, aluminium titanium intermediate alloy and magnesium metal；
2nd, aluminium alloy melt is prepared：Fine aluminium ingot is added in resistance reverberatory furnace first, then adds in the middle of aluminium manganese and closes Gold, aluminium zirconium hardener and aluminium erbium intermediate alloy, until completely melted plus magnesium metal and aluminium titanium intermediate alloy stirring 5min~ 10min, uses Ar gases being passed through speed for 0.1~0.15m310min is refined under conditions of/min, upper 20~30kg is covered and melts After agent, alloy melt is obtained；
3rd, semi-continuous casting：Under conditions of temperature is 750 DEG C~760 DEG C, the alloy melt that step 2 is obtained is imported The standing furnace of resistance reverberatory furnace, is passed through Ar gases, is being passed through speed for 0.1~0.15m3Refined under conditions of/min after 15min, 30min is stood, is then that 50mm/min~55mm/min, casting temperature are 725 DEG C~740 DEG C, casting cooling in casting speed Hydraulic pressure is to click and enter the Al-Ti silks that Ti contents are 6% under conditions of 0.03MPa~0.10MPa, is 500mm/min in casting speed Under conditions of carry out semi-continuous casting, obtain the big specification rectangle ingot of Ship body aluminium alloy；
The Ship body is less than 0.20%, impurity with impurity F e and Zn mass percent in the big specification rectangle ingot of aluminium alloy Si mass percents are less than 0.12%, and impurity Cu mass percents are less than 0.1%.
The effect of present embodiment each element：
1.Mg effect：
The main function of Mg elements is to form a series of soluble metal chemical combination by solution strengthening and with other elements Thing hardening constituent improves the intensity and corrosion resistance of alloy.And enable aluminum alloy to good solderability and have moderate strength.
2.Mn effect：
Mn is in the alloy as auxiliary constituent element, on the one hand, can prevent the recrystallization process of aluminium alloy, improves recrystallization temperature Degree, and recrystal grain is significantly refined, the effect of grain coarsening when preventing from deforming after annealing.On the other hand, by solution strengthening, Eliminate Fe adverse effect.Mn can also improve corrosion stability, weldability.The Mn elements that less than 1% is added in high magnesium alloy can To play supplement invigoration effect, and reduce hot cracking tendency.
3.Er effect：
Added in aluminium alloy Er elements can effective refining alloy as-cast grain, increase alloy heat endurance and by force Degree, hardness.Because Er is main with Al in aluminium alloy3The form of Er particles is present, this particle and Al3Sc and Al3Zr is tied Structure is all cubic system, belongs to Pm3m space groups, and base aluminum coherence or half coherence, with the features such as fusing point is high, stability is good.Er It is main with Al in the alloy3Er form is present, and tiny Al3Er can as the heterogeneous forming core of η phases core, can improve The mechanical property of aging state alloy.
4.Ti effect：
Ti elements primarily serve the effect of crystal grain thinning, but in order to prevent the generation of crystallization compound containing Ti, Ti's adds Enter amount general control within 0.05%.
Embodiment four：Present embodiment from step one unlike embodiment three by mass percentage 0.5%Mn, 4.7%Mg, 0.12%Zr, 0.25%Er, 0.02%Ti and the Al of surplus ratio, are weighed in fine aluminium ingot, aluminium manganese Between alloy, aluminium zirconium hardener, aluminium erbium intermediate alloy, aluminium titanium intermediate alloy and magnesium metal.Other and embodiment three-phase Together.
Embodiment five：Present embodiment and fine aluminium ingot in step one unlike embodiment three or four Purity is 99.7%.It is other identical with embodiment three or four.
Embodiment six：Unlike one of present embodiment and embodiment three to five described in step 2 Flux is by weight percent by 50% KCl, 45% MgCl2And 5% BaCl2Composition；Or flux described in step 2 It is by weight percent by 40% KCl, 45% MgCl2, 8% BaCl2, 7% NaCl+CaCl2Composition.Other and tool One of body embodiment three to five is identical.
Embodiment seven：Step 2 unlike one of present embodiment and embodiment three to six be Aluminium erbium intermediate alloy is added under conditions of more than 780 DEG C, every 20min stirrings after aluminium erbium intermediate alloy is added and once, 3 is stirred altogether It is secondary.It is other identical with one of embodiment three to six.
Embodiment eight：Stirred in step 2 unlike one of present embodiment and embodiment three to seven It is 780 DEG C that melt temperature is kept during mixing.It is other identical with one of embodiment three to seven.
Embodiment nine：Step 3 unlike one of present embodiment and embodiment three to eight is passed through Ar-Cl2Mixed gas, is being passed through speed for 0.1~0.15m315min is refined under conditions of/min, 30min is stood.Other and tool One of body embodiment three to eight is identical.
Embodiment ten：Step 3 is in casting unlike one of present embodiment and embodiment three to nine Speed is that 50mm/min, casting temperature are 725 DEG C and casting cooling water pressure is to carry out semi-continuous casting under conditions of 0.05MPa. It is other identical with one of embodiment three to nine.
Using following experimental verifications effect of the present invention：
Experiment one：
This experiment Ship body is followed these steps to realize with the manufacture method of the big specification rectangle ingot of aluminium alloy：
First, raw material is weighed：By mass percentage 0.5%Mn, 4.7%Mg, 0.12%Zr, 0.25%Er, 0.02%Ti and The Al of surplus ratio, weighs fine aluminium ingot, aluminium manganese intermediate alloy, aluminium zirconium hardener, aluminium erbium intermediate alloy, aluminium titanium intermediate alloy And magnesium metal；
2nd, aluminium alloy melt is prepared：Fine aluminium ingot is added in resistance reverberatory furnace first, then adds in the middle of aluminium manganese and closes Gold, aluminium zirconium hardener, heating-up temperature into resistance reverberatory furnace plus aluminium erbium intermediate alloy, are added in the middle of aluminium erbium to more than 780 DEG C Stirring in every 20 minutes once, is stirred 3 times altogether after alloy, and melt temperature is kept during stirring at 780 DEG C.Plus magnesium metal and aluminium then Beryllium, aluminium titanium intermediate alloy stirring stirring 10min, use Ar gases being passed through speed for 0.15m3Refined under conditions of/min In 10min, covering alloy melt is obtained after 20kg flux；
3rd, semi-continuous casting：Under conditions of temperature is 755 DEG C, it is anti-that the alloy melt that step 2 is obtained imports resistance The standing furnace of stove is penetrated, Ar gases is passed through and is being passed through speed for 0.15m3Under conditions of/min, 30min is stood after refining 15min, so It is afterwards 50mm/min in casting speed, casting temperature is 725 DEG C, and casting cooling water pressure is 0.05MPa, and it is 6% to click and enter Ti contents Al-Ti silks semi-continuous casting carried out under conditions of 500mm/min obtain the big specification rectangle ingot of naval vessel hull aluminium alloy；
The Ship body is less than 0.20%, impurity with impurity F e, Zn mass percent in the big specification rectangle ingot of aluminium alloy Si mass percents are less than 0.12%, and impurity Cu mass percents are less than 0.1%.
The purity of fine aluminium ingot described in step one is 99.7%；
Flux described in step 2 is by weight percent by 40% KCl, 45% MgCl2, 8% BaCl2, 7% NaCl+CaCl2Composition.
Table 1:Test each sample chemical composition (%) of the Ship body made from one with the big specification rectangle ingot of aluminium alloy
Note：1-3 is aluminium alloy cast ingot thickness direction by edge to center.
Ship body made from experiment one is shown in Table 1 with the chemical composition of the big specification rectangle ingot of aluminium alloy, chemically on composition See and meet the alloy technology standard, smaller to edge Segregation of Chemical Composition by center, composition is uniform, meet Rule of Segregation.
To the Ship body big specification rectangle ingot through-thickness of aluminium alloy made from experiment one, taken from edge to center 20mm × 20mm samples, carry out ingot casting mirco structure inspection.From center to edge, interdendritic is away from being gradually reduced, the second distributed mutually Uniformly, crystallization rule is met.
Ship body made from experiment one is cut with the big specification rectangle ingot through-thickness of aluminium alloy by edge to center 20mm × 120mm samples, carry out ingot casting mechanical property contrast (being shown in Table 2).
The Ship body big specification rectangle ingot mechanics properties testing result of aluminium alloy made from the experiment of table 2 one
Note：7-11 is aluminium alloy cast ingot thickness direction by edge to center.
To without Ship body made from Er elements with the big specification rectangle ingot through-thickness of aluminium alloy by edge to center 20mm × 120mm samples are cut, ingot casting mechanical property contrast (being shown in Table 3) is carried out.
Table 3 is free of the big specification rectangle ingot mechanics properties testing result of aluminium alloy of Ship body made from Er element aluminium alloys
As can be seen that the performance difference of one ingot casting of experiment is smaller from table 2,3, each site tissue is provided non-than more uniform Ratio elongation stress, wax-anti dispersant apparently higher than conventional naval vessel oceangoing ship body aluminium alloy performance, its high-quality performance fit For making Ship body.
Experiment two：
This experiment Ship body is followed these steps to realize with the manufacture method of the big specification rectangle ingot of aluminium alloy：
First, raw material is weighed：It is 0.5%Mn, 4.7%Mg, 0.12%Zr, 0.25%Er, 0.02%Ti by mass percentage With the Al of surplus, fine aluminium ingot, aluminium manganese intermediate alloy, aluminium zirconium hardener, aluminium erbium intermediate alloy, aluminium titanium intermediate alloy and gold are weighed Belong to magnesium；
2nd, aluminium alloy melt is prepared：Fine aluminium ingot is added in resistance reverberatory furnace first, then adds in the middle of aluminium manganese and closes Gold, aluminium zirconium hardener, heating-up temperature is to more than 780 DEG C into resistance reverberatory furnace plus aluminium erbium intermediate alloy.Plus magnesium metal then With aluminium beryllium, aluminium titanium intermediate alloy stirring stirring 10min, Ar gases are used to be passed through speed for 0.15m3Refined under conditions of/min In 10min, covering alloy melt is obtained after 20kg flux；
3rd, semi-continuous casting：Under conditions of temperature is 750 DEG C~760 DEG C, the alloy melt that step 2 is obtained is imported The standing furnace of resistance reverberatory furnace, is passed through Ar gases, is being passed through speed for 0.15m3Refine after 15min and stand under conditions of/min 30min, is then 50mm/min in casting speed, casting temperature is 725 DEG C, and casting cooling water pressure is 0.05MPa, clicks and enters Ti and contains Progress semi-continuous casting obtains the flat casting of the naval vessel big specification of hull aluminium alloy under conditions of measuring the Al-Ti silks 500mm/min for 6% Ingot；
The Ship body is less than 0.20%, impurity with impurity F e, Zn mass percent in the big specification rectangle ingot of aluminium alloy Si mass percents are less than 0.12%, and impurity Cu mass percents are less than 0.1%.

Claims (10)

1. the Ship body big specification rectangle ingot of aluminium alloy, it is characterised in that Ship body presses matter with the big specification rectangle ingot of aluminium alloy Percentage is measured by 0.4%~0.7%Mn, 4.4%~4.8%Mg, 0.10%~0.15%Zr, 0.2%~0.3%Er, 0.01 ~the 0.05%Ti and Al of surplus compositions；And Ship body impurity F e and Zn mass hundred in the big specification rectangle ingot of aluminium alloy Divide than being less than 0.20%, impurity Si mass percents are less than 0.12%, and impurity Cu mass percents are less than 0.1%.
2. the Ship body big specification rectangle ingot of aluminium alloy according to claim 1, it is characterised in that Ship body is closed with aluminium Golden big specification rectangle ingot is by mass percentage by 0.5%Mn, 4.7%Mg, 0.12%Zr, 0.25%Er, 0.02%Ti and surplus Al meltings be made.
3. the manufacture method of the big specification rectangle ingot of aluminium alloy of Ship body described in claim 1, it is characterised in that the manufacturer Method is as follows：
First, raw material is weighed：By mass percentage for 0.4%~0.7%Mn, 4.4%~4.8%Mg, 0.10%~0.15%Zr, 0.2%~0.3%Er, 0.01~0.05%Ti and the Al of surplus ratio, are weighed in fine aluminium ingot, aluminium manganese intermediate alloy, aluminium zirconium Between alloy, aluminium erbium intermediate alloy, aluminium titanium intermediate alloy and magnesium metal；
2nd, aluminium alloy melt is prepared：Fine aluminium ingot is added in resistance reverberatory furnace first, aluminium manganese intermediate alloy, aluminium is then added Zirconium intermediate alloy and aluminium erbium intermediate alloy, add magnesium metal and aluminium titanium intermediate alloy stirring 5min~10min, adopt until completely melted Speed is being passed through for 0.1~0.15m with Ar gases310min is refined under conditions of/min, covers after upper 20~30kg flux, obtains To alloy melt；
3rd, semi-continuous casting：Under conditions of temperature is 750 DEG C~760 DEG C, the alloy melt that step 2 is obtained imports resistance The standing furnace of reverberatory furnace, is passed through Ar gases, is being passed through speed for 0.1~0.15m3Refine after 15min, stand under conditions of/min 30min, is then that 50mm/min~55mm/min, casting temperature are 725 DEG C~740 DEG C, casting cooling water pressure in casting speed To click and enter the Al-Ti silks that Ti contents are 6% under conditions of 0.03MPa~0.10MPa, in the bar that casting speed is 500mm/min Semi-continuous casting is carried out under part, the big specification rectangle ingot of Ship body aluminium alloy is obtained；
The Ship body is less than 0.20%, impurity Si matter with impurity F e and Zn mass percent in the big specification rectangle ingot of aluminium alloy Measure percentage and be less than 0.12%, impurity Cu mass percents are less than 0.1%.
4. the manufacture method of the Ship body big specification rectangle ingot of aluminium alloy according to claim 3, it is characterised in that step 0.5%Mn, 4.7%Mg, 0.12%Zr, 0.25%Er, 0.02%Ti and the Al of surplus ratio by mass percentage in one, claims Take fine aluminium ingot, aluminium manganese intermediate alloy, aluminium zirconium hardener, aluminium erbium intermediate alloy, aluminium titanium intermediate alloy and magnesium metal.
5. the manufacture method of the Ship body big specification rectangle ingot of aluminium alloy according to claim 3, it is characterised in that step The purity of fine aluminium ingot is 99.7% in one.
6. the manufacture method of the Ship body big specification rectangle ingot of aluminium alloy according to claim 3, it is characterised in that step Flux described in two is by weight percent by 50% KCl, 45% MgCl2And 5% BaCl2Composition；Or in step 2 The flux is by weight percent by 40% KCl, 45% MgCl2, 8% BaCl2, 7% NaCl+CaCl2Composition.
7. the manufacture method of the Ship body big specification rectangle ingot of aluminium alloy according to claim 3, it is characterised in that step Two be more than 780 DEG C under conditions of add aluminium erbium intermediate alloy, add aluminium erbium intermediate alloy after per 20min stirring once, altogether Stirring 3 times.
8. the manufacture method of the Ship body big specification rectangle ingot of aluminium alloy according to claim 3, it is characterised in that step Melt temperature is kept to be 780 DEG C in whipping process in two.
9. the manufacture method of the Ship body big specification rectangle ingot of aluminium alloy according to claim 3, it is characterised in that step Three are passed through Ar-Cl2Mixed gas, is being passed through speed for 0.1~0.15m315min is refined under conditions of/min, 30min is stood.
10. the manufacture method of the Ship body big specification rectangle ingot of aluminium alloy according to claim 3, it is characterised in that step Three be that 50mm/min, casting temperature are 725 DEG C and casting cooling water pressure is partly to be connected under conditions of 0.05MPa in casting speed Continuous casting.
CN201710325403.7A 2017-05-10 2017-05-10 The Ship body big specification rectangle ingot of aluminium alloy and its manufacture method Pending CN106967907A (en)

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CN107739918A (en) * 2017-10-18 2018-02-27 东北轻合金有限责任公司 A kind of aluminium alloy of tank body containing erbium and its manufacturing method of plate thereof
CN108342626A (en) * 2018-05-18 2018-07-31 东北轻合金有限责任公司 One kind ocean engineering containing erbium and goods stock aluminium alloy and its manufacturing method of plate thereof
CN111378878A (en) * 2018-12-29 2020-07-07 嘉丰工业科技（惠州）有限公司 High-ductility non-heat-treatment die-casting aluminum alloy and preparation method thereof
CN113549797A (en) * 2021-07-26 2021-10-26 郑州大学 High-flux continuous casting and rolling aluminum-magnesium-manganese alloy plate for ship and production process thereof
CN114318077A (en) * 2021-12-28 2022-04-12 东北轻合金有限责任公司 Manufacturing method of Al-Si-Mn-Zn aluminum alloy flat ingot

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107739918A (en) * 2017-10-18 2018-02-27 东北轻合金有限责任公司 A kind of aluminium alloy of tank body containing erbium and its manufacturing method of plate thereof
CN108342626A (en) * 2018-05-18 2018-07-31 东北轻合金有限责任公司 One kind ocean engineering containing erbium and goods stock aluminium alloy and its manufacturing method of plate thereof
CN111378878A (en) * 2018-12-29 2020-07-07 嘉丰工业科技（惠州）有限公司 High-ductility non-heat-treatment die-casting aluminum alloy and preparation method thereof
CN111378878B (en) * 2018-12-29 2021-10-26 嘉丰工业科技（惠州）有限公司 High-ductility non-heat-treatment die-casting aluminum alloy and preparation method thereof
CN113549797A (en) * 2021-07-26 2021-10-26 郑州大学 High-flux continuous casting and rolling aluminum-magnesium-manganese alloy plate for ship and production process thereof
CN113549797B (en) * 2021-07-26 2022-04-22 郑州大学 High-flux continuous casting and rolling aluminum-magnesium-manganese alloy plate for ship and production process thereof
US11674202B2 (en) 2021-07-26 2023-06-13 Zhengzhou University High-throughout continuous casting and rolling Al—Mg—Mn alloy plate for ships and the preparation process thereof
CN114318077A (en) * 2021-12-28 2022-04-12 东北轻合金有限责任公司 Manufacturing method of Al-Si-Mn-Zn aluminum alloy flat ingot

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