CN106119627A - A kind of manufacture method of naval vessel hull aluminium alloy big specification rectangle ingot - Google Patents
A kind of manufacture method of naval vessel hull aluminium alloy big specification rectangle ingot Download PDFInfo
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- CN106119627A CN106119627A CN201610605727.1A CN201610605727A CN106119627A CN 106119627 A CN106119627 A CN 106119627A CN 201610605727 A CN201610605727 A CN 201610605727A CN 106119627 A CN106119627 A CN 106119627A
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- aluminium alloy
- big specification
- naval vessel
- vessel hull
- ingot
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title abstract description 14
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- 229910052691 Erbium Inorganic materials 0.000 claims abstract description 13
- 238000009749 continuous casting Methods 0.000 claims abstract description 13
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims description 47
- 229910045601 alloy Inorganic materials 0.000 claims description 45
- 238000005266 casting Methods 0.000 claims description 32
- 239000012535 impurity Substances 0.000 claims description 25
- -1 aluminum manganese Chemical compound 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 23
- 239000011572 manganese Substances 0.000 claims description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 19
- 239000011777 magnesium Substances 0.000 claims description 19
- 238000005303 weighing Methods 0.000 claims description 17
- 239000004411 aluminium Substances 0.000 claims description 15
- DNXNYEBMOSARMM-UHFFFAOYSA-N alumane;zirconium Chemical compound [AlH3].[Zr] DNXNYEBMOSARMM-UHFFFAOYSA-N 0.000 claims description 13
- 239000004848 polyfunctional curative Substances 0.000 claims description 13
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 10
- 230000004907 flux Effects 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims 7
- 230000005611 electricity Effects 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 229910000914 Mn alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- SOWHJXWFLFBSIK-UHFFFAOYSA-N aluminum beryllium Chemical compound [Be].[Al] SOWHJXWFLFBSIK-UHFFFAOYSA-N 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- C22C1/02—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The manufacture method of a kind of naval vessel hull aluminium alloy big specification rectangle ingot, the present invention relates to the manufacture method of a kind of aluminium alloy big specification rectangle ingot.The invention aims to solve the problem that the naval vessel hull aluminium alloy big specification rectangle ingot that existing method manufactures, mechanical strength and corrosion resistance difference are low with the life-span.The naval vessel hull aluminium alloy big specification rectangle ingot of the present invention is made up as melting raw material of the Al being 0.7%～1.1%Mn, 5.5%～6.5%Mg, 0.03%～0.15%Zr, 0.10%～0.30%Er and surplus by weight percentage.The naval vessel hull aluminium alloy big specification rectangle ingot of the present invention sequentially includes the following steps: one, weighs a certain amount of five kinds of materials containing five kinds of elements of Mn, Mg, Zr, Er and Al, two, prepare aluminium alloy melt, three, semi-continuous casting obtain naval vessel hull aluminium alloy big specification rectangle ingot；The aluminium alloy big specification rectangle ingot of the present invention is used for naval vessel hull.
Description
Technical field
The present invention relates to the manufacture method of a kind of aluminium alloy big specification rectangle ingot.
Background technology
Along with the development epoch of science and technology constantly improve, warship industry is in terms of improving workmanship and reducing energy consumption
There is again new developing direction.The lightweight of naval vessel hull is the light-weighted key areas in naval vessel, aluminium-alloy hull and fibre reinforced plastic hull
When having suitable intensity, its quality is far below fibre reinforced plastic hull, even if thus aluminum ships and light boats are under case of heavy load, also than steel ship more
Easily raise speed, slide, navigate by water more steady, comfortable, operate the most flexible.In actual applications, marine aluminium alloy is excellent
Gesture is clearly.And there is mechanical strength and corrosion resistance in the naval vessel hull aluminium alloy big specification rectangle ingot of existing method manufacture
Problem poor, that the life-span is low.
Summary of the invention
The invention aims to solve the naval vessel hull aluminium alloy big specification rectangle ingot that existing method manufactures, mechanics
Intensity and the problem that corrosion resistance is poor and the life-span is low, it is provided that a kind of manufacture producing naval vessel hull aluminium alloy big specification rectangle ingot
Method.
A kind of naval vessel hull aluminium alloy big specification rectangle ingot by weight percentage by 0.7%～1.1%Mn, 5.5%～
The Al of 6.5%Mg, 0.03%～0.15%Zr, 0.10%～0.30%Er and surplus makes as melting raw material；Described warship
In ship hull aluminium alloy big specification rectangle ingot, impurity Si and Fe percentage by weight are less than 0.4%, and impurity Zn percentage by weight is little
In 0.2%, impurity Cu, Ni and Cr percentage by weight is less than 0.1%.
The manufacture method of a kind of naval vessel hull aluminium alloy big specification rectangle ingot follows these steps to realize:
One, weigh the most respectively 0.7%～1.1% the Mg of Mn, 5.5%～6.5%, 0.03%～
The Er and the Al of surplus of Zr, 0.10%～0.30% of 0.15%, puts into different containers by the material weighed, stand-by；Institute
Stating the Mn of 0.7%～1.1% and realize by weighing aluminum manganese intermediate alloy, the Mg of described 5.5%～6.5% is by weighing
Magnesium metal realize, the Zr of described 0.03%～0.15% by weigh aluminium zirconium hardener realize, described 0.10%～
The Er of 0.30% realizes by weighing aluminum erbium intermediate alloy, and described Al realizes by weighing aluminium ingot；
Two, prepare aluminium alloy melt: first joined in resistance reverberatory furnace by the aluminium ingot weighed, be subsequently adding in the middle of aluminum manganese
Alloy, aluminium zirconium hardener, heating-up temperature to 760 DEG C～800 DEG C add aluminum erbium intermediate alloy in resistance reverberatory furnace, add aluminum erbium
After intermediate alloy, every 10min～30min stirs once, altogether stirring 1～5 time, keep melt temperature at 760 DEG C during stirring～
800℃；Then add magnesium metal and aluminium zirconium hardener stirring stirring 5min～10min, use Ar-Cl2Mixed gas refine
5min～10min, covering obtains after flux alloy melt；
Three, semi-continuous casting: under conditions of temperature is 740 DEG C～760 DEG C, alloy melt step 2 obtained imports
In the standing furnace of resistance reverberatory furnace, it is passed through Ar-Cl2Mixed gas, stands 10min～30min, protects after refine 9min～15min
Hold the alloy melt liquid level in resistance reverberatory furnace and the alloy melt liquid level in flow table in same level, then in casting speed be
35mm/min～40mm/min, casting temperature is 715 DEG C～740 DEG C, and casting cooling water pressure is the bar of 0.03MPa～0.08MPa
Carry out semi-continuous casting under part and obtain naval vessel hull aluminium alloy big specification rectangle ingot.
In described naval vessel hull aluminium alloy big specification rectangle ingot, impurity Si, Fe mass percent is less than 0.4%, impurity Zn
Mass percent is less than 0.2%, and impurity Cu, Ni, Cr mass percent is less than 0.1%.
The flux that described step 2 covers is by weight percent by the KCl of 45%, the NaCl of 30% and 25%
Na3AlF6Composition.
Mg element is to use one of alloying element the most extensive, maximally effective in wrought aluminium alloy.The Main Function of Mg element
It is by solution strengthening and to form a series of soluble metal compound hardening constituent with other elements and put forward heavy alloyed intensity.
Mn in this warship marine aluminium alloy as auxiliary constituent element, on the one hand, by solution strengthening, eliminate Fe harmful shadow
Ringing, produce extrusion effect, alloy rises supplementary invigoration effect, on the other hand, Mn can also improve corrosion stability, weldability, improves
Recrystallization temperature, prevent deform after annealing time grain coarsening effect.In high magnesium alloy, the Mn element of addition less than 1% is permissible
Play supplementary invigoration effect, and reduce hot cracking tendency.
In aluminium alloy, add rare earth element can reduce the illeffects of impurity, change the Precipitation Kinetics of aluminium alloy,
Wherein element Er can be formed and base aluminum coherence or the Al of half coherence in aluminium alloy3Er particle, this particle and Al3Sc and
Al3Zr structure is all cubic system, belongs to Pm3m space group, has the features such as fusing point height, good stability, can carry heavy alloyed by force
Degree.Er is main with Al in the alloy3Presented in Er, and tiny Al3Er can be permissible as the core of the heterogeneous forming core of η phase
Improve the mechanical property of aging state alloy.
The present invention is relative to the advantage of prior art:
1, the present invention uses same level semicontinuous casting technique and combines the scientific matching of aluminium alloy cast ingot raw material and effectively drop
The low generation of drawing crack waste product, shortens the casting time, and ensure that the surface quality of ingot casting；By adding in high magnesium alloy
Er element, enables aluminum alloy to intensity and improves more than 20%, and heat stability improves about 50 DEG C；And er element is relative to other rare earths
Element is cheap, and this makes Development of Novel commercial scale high-performance aluminium alloy Han erbium be possibly realized；For improving in ingot casting
Portion's quality and surface quality provide advantage, the present invention is directed to the characteristic of different-alloy and select different addition opportunity, molten
Refining temperature and stirring means, the problem solving the abundant alloying of each element, ingot casting yield rate increases；The present invention prepares
The specified non-proportional elongation stress of naval vessel hull aluminium alloy big specification rectangle ingot is 141～156N/mm2, tensile strength N/mm2
Being 290～313, percentage elongation is 8.96～11.2%, and the naval vessel big rule of hull aluminium alloy prepared without Er element aluminum alloy
Lattice rectangle ingot mechanics properties testing result shows that specified non-proportional elongation stress is 131～148N/mm2, tensile strength N/mm2For
232～265, percentage elongation is 8.31～9.35%, solves naval vessel aluminium alloy cast ingot mechanical property prepared by existing method, resistance to
The problem that the erosion property difference life-span is low.
2, the naval vessel hull aluminium alloy big specification rectangle ingot of the present invention has further the advantage that, is first that proportion is little, only
For the 1/3 of steel, ship weight, energy efficient can be alleviated, increase loading capacity；Next to that corrosion resistance is good, reduce the expenses such as oiling, extend
Service life；Three be welding, machine-shaping property good, beneficially post-production；Last aluminium waste is easily recycled, and can circulate and make
With, do not burn meanwhile, meet fire safety.
Accompanying drawing explanation
Fig. 1 is the height of the naval vessel hull aluminium alloy big specification rectangle ingot through-thickness edge position that embodiment one prepares
Times macrograph；
Fig. 2 is vapour naval vessel hull aluminium alloy big specification rectangle ingot through-thickness 1/4 position that embodiment one prepares
Mirco structure photo；
Fig. 3 is the height of the naval vessel hull aluminium alloy big specification rectangle ingot through-thickness center that embodiment one prepares
Times macrograph.
Detailed description of the invention
Technical solution of the present invention is not limited to act specific embodiments set forth below, also includes between each detailed description of the invention
Combination in any.
Detailed description of the invention one: a kind of naval vessel hull aluminium alloy big specification rectangle ingot described in present embodiment is by weight
Percentage ratio is by 0.7%～1.1%Mn, 5.5%～6.5%Mg, 0.03%～0.15%Zr, 0.10%～0.30%Er and surplus
Al make as melting raw material；Impurity Si and Fe percentage by weight in described naval vessel hull aluminium alloy big specification rectangle ingot
Less than 0.4%, impurity Zn percentage by weight is less than 0.2%, and impurity Cu, Ni and Cr percentage by weight is less than 0.1%.
Detailed description of the invention two: present embodiment is the big rule of naval vessel hull aluminium alloy unlike detailed description of the invention one
Lattice rectangle ingot is former as melting by the Al of 0.9%Mn, 6.2%Mg, 0.09%Zr, 0.22%Er and surplus by weight percentage
Expect and make.Other step and parameter are identical with detailed description of the invention two.
Detailed description of the invention three: the system of the naval vessel hull aluminium alloy big specification rectangle ingot as described in detailed description of the invention one
The method of making follows these steps to realize:
One, weigh the most respectively 0.7%～1.1% the Mg of Mn, 5.5%～6.5%, 0.03%～
The Er and the Al of surplus of Zr, 0.10%～0.30% of 0.15%, puts into different containers by the material weighed, stand-by；Institute
Stating the Mn of 0.7%～1.1% and realize by weighing aluminum manganese intermediate alloy, the Mg of described 5.5%～6.5% is by weighing
Magnesium metal realize, the Zr of described 0.03%～0.15% by weigh aluminium zirconium hardener realize, described 0.10%～
The Er of 0.30% realizes by weighing aluminum erbium intermediate alloy, and described Al realizes by weighing aluminium ingot；
Two, prepare aluminium alloy melt: first joined in resistance reverberatory furnace by the aluminium ingot weighed, be subsequently adding in the middle of aluminum manganese
Alloy, aluminium zirconium hardener, heating-up temperature to 760 DEG C～800 DEG C add aluminum erbium intermediate alloy in resistance reverberatory furnace, add aluminum erbium
After intermediate alloy, every 10min～30min stirs once, altogether stirring 1～5 time, keep melt temperature at 760 DEG C during stirring～
800℃；Then add magnesium metal and aluminium zirconium hardener stirring stirring 5min～10min, use Ar-Cl2Mixed gas refine
5min～10min, covering obtains after flux alloy melt；
Three, semi-continuous casting: under conditions of temperature is 740 DEG C～760 DEG C, alloy melt step 2 obtained imports
In the standing furnace of resistance reverberatory furnace, it is passed through Ar-Cl2Mixed gas, stands 10min～30min, protects after refine 9min～15min
Hold the alloy melt liquid level in resistance reverberatory furnace and the alloy melt liquid level in flow table in same level, then in casting speed be
35mm/min～40mm/min, casting temperature is 715 DEG C～740 DEG C, and casting cooling water pressure is the bar of 0.03MPa～0.08MPa
Carry out semi-continuous casting under part and obtain naval vessel hull aluminium alloy big specification rectangle ingot；
In described naval vessel hull aluminium alloy big specification rectangle ingot, impurity Si, Fe mass percent is less than 0.4%, impurity Zn
Mass percent is less than 0.2%, and impurity Cu, Ni, Cr mass percent is less than 0.1%.
Detailed description of the invention four: present embodiment step one naval vessel hull aluminum unlike detailed description of the invention three closes
The big specification rectangle ingot of gold is by weight percentage for 0.9%Mn, 6.2%Mg, 0.09%Zr, 0.22%Er and the Al of surplus.Its
Its step and parameter are identical with detailed description of the invention three.
Detailed description of the invention five: in present embodiment step one unlike detailed description of the invention three or four, aluminium ingot is pure
Degree is 99.7%.Other step and parameter are identical with detailed description of the invention three or four.
Detailed description of the invention six: present embodiment step 2 unlike one of detailed description of the invention three to five covers
Flux is by weight percent by the KCl of 45%, the Na of the NaCl of 30% and 25%3AlF6Composition.Other step and parameter and tool
One of body embodiment three to five is identical.
Detailed description of the invention seven: present embodiment step 3 unlike one of detailed description of the invention three to six is passed through
Ar-Cl2The speed of mixed gas is 0.1m3/ min～0.15m3/ min, time 10min～20min.Other step and parameter with
One of detailed description of the invention three to six is identical.
Detailed description of the invention eight: present embodiment step 3 unlike one of detailed description of the invention three to seven is casting
Speed is 35mm/min, and casting temperature is 725 DEG C and casting cooling water pressure is to carry out semi-continuous casting under conditions of 0.05MPa.
Other step and parameter are identical with one of detailed description of the invention three to seven.
Embodiment one:
The manufacture method of the present embodiment naval vessel hull aluminium alloy big specification rectangle ingot follows these steps to realize:
One, weigh: by mass percentage for 0.9%Mn, 6.2%Mg, 0.09%Zr, 0.22%Er and the Al of surplus, institute
State Mn by weigh aluminum manganese intermediate alloy realize, described Mg by weigh magnesium metal realize, institute Zr be by title
Taking what aluminium zirconium hardener realized, described Er realizes by weighing aluminum erbium intermediate alloy, and described Al is by weighing aluminium ingot
Realize；
Two, prepare aluminium alloy melt: first joined in resistance reverberatory furnace by aluminium ingot, be subsequently adding aluminum manganese intermediate alloy,
Aluminium zirconium hardener, heating-up temperature to 780 DEG C adds aluminum erbium intermediate alloy in resistance reverberatory furnace, every after adding aluminum erbium intermediate alloy
Once, stirring 3 times altogether, during stirring, holding melt temperature is at 780 DEG C in stirring in 20 minutes.Then add and close in the middle of magnesium metal and aluminum beryllium
Gold stirring stirring 10min, uses Ar-Cl2Mixed gas refine 10min, covering obtains after flux alloy melt；
Three, semi-continuous casting: under conditions of temperature is 750 DEG C, it is anti-that alloy melt step 2 obtained imports resistance
Penetrate the standing furnace of stove, be passed through Ar-Cl2Mixed gas, stands 30min after refine 15min, keep the alloy in resistance reverberatory furnace to melt
Alloy melt liquid level in body fluid face and flow table, in same level, is then 35mm/min in casting speed, and casting temperature is 725
DEG C, casting cooling water pressure is to carry out semi-continuous casting under conditions of 0.05MPa to obtain the flat casting of big specification of naval vessel hull aluminium alloy
Ingot；
In described naval vessel hull aluminium alloy big specification rectangle ingot, impurity Si, Fe mass percent is less than 0.4%, impurity Zn
Mass percent is less than 0.2%, and impurity Cu, Ni, Cr mass percent is less than 0.1%.
The purity of the aluminium ingot described in step one is 99.7%；
Flux described in step 2 is by the KCl that mass percent is 45%, the Na of the NaCl of 30% and 25%3AlF6Group
Become；
Step 3 is passed through Ar-Cl2The speed of mixed gas is 0.15m3/ min, time 15min.
The present embodiment one obtains the yield rate of naval vessel hull aluminium alloy big specification rectangle ingot and has reached 95%.
Table 1: each sample chemical composition (%) of the naval vessel hull aluminium alloy big specification rectangle ingot that embodiment one prepares
Note: 1-3 be aluminium alloy cast ingot thickness direction by edge to center.
The chemical composition of the naval vessel hull aluminium alloy big specification rectangle ingot that embodiment one prepares is shown in Table 1, chemically composition
On see and meet this alloy technology standard, less to edge Segregation of Chemical Composition by center, composition uniformly, meet Rule of Segregation.
The naval vessel hull aluminium alloy big specification rectangle ingot through-thickness preparing embodiment one, takes to center from edge
20mm × 20mm sample, carries out ingot casting mirco structure inspection.Fig. 1 is the naval vessel big specification of hull aluminium alloy that embodiment one prepares
The mirco structure photo of rectangle ingot through-thickness edge position；Fig. 2 is the vapour naval vessel hull aluminium alloy that embodiment one prepares
The mirco structure photo of big specification rectangle ingot through-thickness 1/4 position；Fig. 3 is that the naval vessel hull aluminum that embodiment one prepares closes
The mirco structure photo of the big specification rectangle ingot through-thickness center of gold；As seen from the figure, from center to edge, dendrite interval
Being gradually reduced, the second phase is evenly distributed, and meets crystallization rule.
The naval vessel hull aluminium alloy big specification rectangle ingot through-thickness that embodiment one is prepared by edge in anxious
Take 20mm × 120mm sample, carry out ingot casting mechanical property contrast (being shown in Table 2).
The naval vessel hull aluminium alloy big specification rectangle ingot mechanics properties testing result that table 2 embodiment one prepares
Note: 7-11 be aluminium alloy cast ingot thickness direction by edge to center.
To the naval vessel hull aluminium alloy big specification rectangle ingot through-thickness prepared without Er element by edge to center
Cut 20mm × 120mm sample, carry out ingot casting mechanical property contrast (being shown in Table 3).
The naval vessel hull aluminium alloy big specification rectangle ingot mechanics properties testing result that table 3 prepares without Er element aluminum alloy
It can be seen that the performance difference of embodiment one ingot casting is less from table 2,3, each site tissue ratio is more uniform, it is stipulated that
Disproportional elongation stress, wax-anti dispersant apparently higher than the performance of conventional naval vessel hull aluminium alloy, its high-quality performance
It is applicable to make naval vessel hull.
Embodiment two:
The manufacture method of the present embodiment naval vessel hull aluminium alloy big specification rectangle ingot follows these steps to realize:
One, weigh: by mass percentage for 1.0%Mn, 5.5%Mg, 0.1%Zr, 0.15%Er and the Al of surplus, institute
State Mn by weigh aluminum manganese intermediate alloy realize, described Mg by weigh magnesium metal realize, institute Zr be by title
Taking what aluminium zirconium hardener realized, described Er realizes by weighing aluminum erbium intermediate alloy, and described Al is by weighing aluminium ingot
Realize；
Two, prepare aluminium alloy melt: first joined in resistance reverberatory furnace by fine aluminium ingot, be subsequently adding in the middle of aluminum manganese and close
Gold, aluminium zirconium hardener, more than heating-up temperature to 790 DEG C add aluminum erbium intermediate alloy in resistance reverberatory furnace.Then magnesium metal is added
With aluminum beryllium intermediate alloy stirring stirring 10min, use Ar-Cl2Mixed gas refine 10min, covering obtains after flux alloy
Melt；
Three, semi-continuous casting: under conditions of temperature is 750 DEG C, it is anti-that alloy melt step 2 obtained imports resistance
Penetrate the standing furnace of stove, be passed through Ar-Cl2Mixed gas, stands 30min after refine 15min, keep the alloy in resistance reverberatory furnace to melt
Alloy melt liquid level in body fluid face and flow table, in same level, is then 35mm/min in casting speed, and casting temperature is 725
DEG C, casting cooling water pressure is to carry out semi-continuous casting under conditions of 0.05MPa to obtain the flat casting of big specification of naval vessel hull aluminium alloy
Ingot；
In described naval vessel hull aluminium alloy big specification rectangle ingot, impurity Si, Fe mass percent is less than 0.4%, impurity Zn
Mass percent is less than 0.2%, and impurity Cu, Ni, Cr mass percent is less than 0.1%.
The present embodiment obtains the yield rate of naval vessel hull aluminium alloy big specification rectangle ingot and has reached 80%.
Claims (8)
1. a naval vessel hull aluminium alloy big specification rectangle ingot, it is characterised in that: this aluminium alloy big specification rectangle ingot is by weight
Percentage ratio is by 0.7%～1.1%Mn, 5.5%～6.5%Mg, 0.03%～0.15%Zr, 0.10%～0.30%Er and surplus
Al make as melting raw material；Impurity Si and Fe percentage by weight in described naval vessel hull aluminium alloy big specification rectangle ingot
Less than 0.4%, impurity Zn percentage by weight is less than 0.2%, and impurity Cu, Ni and Cr percentage by weight is less than 0.1%.
A kind of naval vessel hull aluminium alloy big specification rectangle ingot the most according to claim 1, it is characterised in that: this aluminium alloy
Big specification rectangle ingot by weight percentage by the Al of 0.9%Mn, 6.2%Mg, 0.09%Zr, 0.22%Er and surplus as melting
Raw material and make.
The preparation method of a kind of naval vessel hull aluminium alloy the most as claimed in claim 1 big specification rectangle ingot, it is characterised in that:
This preparation method follows these steps to realize:
One, the Mg of Mn, 5.5%～6.5%, 0.03%～0.15% of 0.7%～1.1% are weighed the most respectively
The Er of Zr, 0.10%～the 0.30% and Al of surplus, puts into different containers by the material weighed, stand-by；Described 0.7%～
The Mn of 1.1% realizes by weighing aluminum manganese intermediate alloy, and the Mg of described 5.5%～6.5% is real by weighing magnesium metal
Existing, the Zr of described 0.03%～0.15% realizes by weighing aluminium zirconium hardener, described 0.10%～0.30%
Er realizes by weighing aluminum erbium intermediate alloy, and described Al realizes by weighing aluminium ingot；
Two, prepare aluminium alloy melt: first joined in resistance reverberatory furnace by the aluminium ingot weighed, be subsequently adding in the middle of aluminum manganese and close
Gold, aluminium zirconium hardener, heating-up temperature to 760 DEG C～800 DEG C add aluminum erbium intermediate alloy in resistance reverberatory furnace, add in aluminum erbium
Between after alloy every 10min～30min stir once, stirring 1～5 time altogether, keep melt temperature at 760 DEG C～800 during stirring
℃；Then add magnesium metal and aluminium zirconium hardener stirring stirring 5min～10min, use Ar-Cl2Mixed gas refine 5min～
10min, covering obtains after flux alloy melt；
Three, semi-continuous casting: under conditions of temperature is 740 DEG C～760 DEG C, alloy melt step 2 obtained imports resistance
In the standing furnace of reverberatory furnace, it is passed through Ar-Cl2Mixed gas, stands 10min～30min, keeps electricity after refine 9min～15min
Alloy melt liquid level in resistance reverberatory furnace and the alloy melt liquid level in flow table, in same level, then in casting speed are
35mm/min～40mm/min, casting temperature is 715 DEG C～740 DEG C, and casting cooling water pressure is the bar of 0.03MPa～0.08MPa
Carry out semi-continuous casting under part and obtain naval vessel hull aluminium alloy big specification rectangle ingot；
In described naval vessel hull aluminium alloy big specification rectangle ingot, impurity Si, Fe mass percent is less than 0.4%, impurity Zn mass
Percentage ratio is less than 0.2%, and impurity Cu, Ni, Cr mass percent is less than 0.1%.
The preparation method of a kind of naval vessel hull aluminium alloy the most according to claim 3 big specification rectangle ingot, its feature exists
In: step one weighs the Al of 0.9%Mn, 6.2%Mg, 0.09%Zr, 0.22%Er and surplus by weight percentage.
The preparation method of a kind of naval vessel hull aluminium alloy the most according to claim 3 big specification rectangle ingot, its feature exists
In: in step one, the purity of aluminium ingot is 99.7%.
The preparation method of a kind of naval vessel hull aluminium alloy the most according to claim 3 big specification rectangle ingot, its feature exists
In: the flux that step 2 covers is by weight percent by the KCl of 45%, the Na of the NaCl of 30% and 25%3AlF6Composition.
The preparation method of a kind of naval vessel hull aluminium alloy the most according to claim 3 big specification rectangle ingot, its feature exists
In: step 3 is passed through Ar-Cl2The speed of mixed gas is 0.1m3/ min～0.15m3/ min, time 10min～20min.
The preparation method of a kind of naval vessel hull aluminium alloy the most according to claim 3 big specification rectangle ingot, its feature exists
In: step 3 is 35mm/min in casting speed, and casting temperature is that 725 DEG C and casting are under conditions of cooling water pressure is 0.05MPa
Carry out semi-continuous casting.
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| CN106967907A (en) * | 2017-05-10 | 2017-07-21 | 东北轻合金有限责任公司 | The Ship body big specification rectangle ingot of aluminium alloy and its manufacture method |
| CN107988499A (en) * | 2017-10-27 | 2018-05-04 | 包头稀土研究院 | The method that fused salt thermal reduction prepares aluminium erbium intermediate alloy |
| 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 |
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