CN107739928B - A kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel - Google Patents
A kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel Download PDFInfo
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- CN107739928B CN107739928B CN201711053475.7A CN201711053475A CN107739928B CN 107739928 B CN107739928 B CN 107739928B CN 201711053475 A CN201711053475 A CN 201711053475A CN 107739928 B CN107739928 B CN 107739928B
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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
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
Abstract
The invention belongs to technical field of aluminum alloy technology, it is related to a kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel, by directly manually being made annealing treatment to the aluminium alloy extrusions after the completion of online squeeze, annealing schedule is (320-350) DEG C × (3-5) h, so that material is organizationally annealed structure by extrusion deformation metaplasia, the hardness of product surface drops to 26HRB or so by the 30HRB or so under squeezed state, it is handled by annealing process early period and the hardness of material is reduced and the later period is processable or tensility is improved, material is softer；Drawing process after annealing are as follows: when extrudate length is 25000mm, the stretching travel displacement range of stretching-machine is set as 1250~2250mm, tensile speed range is set as 40~20mm/s, drawing deformation is 5~9%, after carrying out stretch process to 5083 aluminium alloy extrusions after extruding, the mechanical property of 5083 aluminium alloy extrusions complies fully with the performance requirement under 5083-H116 state in yield strength >=215MPa, tensile strength >=300MPa, the mechanical property of elongation after fracture >=10%, 5083 aluminium alloy extrusions.
Description
Technical field
The invention belongs to technical field of aluminum alloy technology, are related to a kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel.
Background technique
Its structural material of the operating environment requirements of ship has high specific strength, toughness, corrosion resistance, antifatigue, shock resistance
And the comprehensive performances such as good weldability, especially ship of the traveling in marine environment, because seawater contains a large amount of Cl-, it is
There is a kind of typical electrolytic solution very strong corrosivity more to require material peculiar to vessel under this strong corrosive environment and stress
Expect the electrochemically resistant corrosion and anti-stress corrosion performance that have excellent.In traditional material, although steel and polymer-based compound
Material has an a large amount of application in shipbuilding, but that there is steel and high molecular material not to have is a series of for aluminum alloy materials
Comprehensive performance, high specific strength and corrosion resistance, excellent formability and weldability, Yi Huishou and it is anti-aging the features such as make aluminium
Alloy in shipbuilding using more and more, and have a high potential, have a extensive future.
5xxx line aluminium alloy at present, intensity, good plasticity, corrosion stability and weldability with higher, production the deck of boat,
Its critical role is shown in barnacle, hull understructure, is the important materials for establishing Ship Structure.
H1 indicates simple work-hardened condition in 5083H112, without additional heat-treatment；Processing hardening code name H subsequent
The work-hardening capacity of binary digit (1-9) expression product；The meaning of third bit digital, H112 table behind processing hardening code name H
Show the alloy product suitable for thermo forming, has prescribed requirement to its mechanical property.
5083 high-magnesium aluminum alloys are widely used due to its with higher corrosion-resistant and weldability in ship navigation
Equal fields, but the main problem of extrusion process of production be product yield strength it is low, although the performance of product can satisfy
The performance requirement of 5083-H112 is i.e. in " css material and welding conditions ": yield strength (140MPa~160MPa) >=125MPa,
Tensile strength (295MPa~310MPa) >=270MPa, elongation after fracture 22%~25% >=10%, but answered in real material
With generally requiring product in the process with higher intensity and with the power under preferable corrosion resisting property i.e. 5083-H116 state
Learn performance and corrosion resisting property.
Summary of the invention
In view of this, the present invention can only produce production under 5083-H112 state to solve existing 5083 extrusion plate
The problem of product, the yield strength of product is too low under 5083-H112 state, is unable to satisfy use demand in ship naval vessels, provides one
The processing technology of kind 5083 aluminium alloy extrusions peculiar to vessel.
In order to achieve the above objectives, the present invention provides a kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel, including following step
It is rapid:
A, 5083 aluminium alloy stocks: Si :≤0.4%, Fe :≤0.4%, Cu are prepared according to following weight fraction ratio :≤
0.10%, Mn :≤0.7%~0.9%, Mg:4.6%~4.8%, Zn :≤0.25%, Ti :≤0.15%, single impurity≤
0.05%, impurity adds up to≤0.15%, surplus Al, and prepared 5083 aluminium alloy stock is added in smelting furnace and is uniformly mixed
Melting is liquid aluminium alloy afterwards, is aluminium alloy cast ingot by liquid aluminium alloy founding；
B, by the aluminium alloy cast ingot after founding after 520~540 DEG C of homogenize process 16h, it is placed in the extrusion cylinder of extruder
In squeezed, obtain 5083 aluminium alloy extrusions；
C, 5083 aluminium alloy extrusions after extruding is manually annealed, annealing temperature is 320~350 DEG C, annealing time
For 3~5h；
D, 5083 aluminium alloy extrusions after annealing are placed in stretching-machine and are stretched, wherein 5083 aluminium alloy extrusions
Drawing deformation≤10%, tensile speed≤60mm/s of stretching-machine；
E, 5083 aluminium alloy extrusions after stretching step D are quenched；
F, quenched 5083 aluminium alloy extrusions of step E is subjected to aging strengthening model.
Further, the aluminium alloy cast ingot of step B homogenize process is placed in side when squeezing in extrusion cylinder using segmentally heating
Method, the heating temperature on extruder extrusion cylinder head are 440~460 DEG C, and the heating temperature at middle part is 440~460 DEG C, and tail portion adds
Hot temperature is 370~390 DEG C.
Further, for step B 5083 aluminium alloy extrusions after extruding with a thickness of 5~7mm, width is 240~280mm.
Further, step B 5083 aluminium alloy extrusions after extruding is with a thickness of 6mm, width 250mm.
Further, 5083 aluminium alloy extrusions tensile elongation ranges after step D is stretched are 10000~40000mm, after stretching
5083 aluminium alloy extrusions width≤700mm.
Further, the quenching mode of step E quenching treatment is air-cooled and is atomized the synchronous mode of cooling down, quenched 5083
Aluminium alloy extrusions temperature is 80~100 DEG C.
Further, step F aging temp is 180~220 DEG C, and aging time is 3~8h.
The beneficial effects of the present invention are:
1, the processing technology of the present invention 5083 aluminium alloy extrusions peculiar to vessel, original production technology can only squeeze production 5083-
The product of H112 state, and the yield strength of product can not produce 5083-H116 state well below actual use requirements
Product.Now by directly manually being made annealing treatment to the product after the completion of online squeeze, annealing schedule is (320-350) DEG C
× (3-5) h, so that material is organizationally annealed structure by extrusion deformation metaplasia, the hardness of product surface is by extruding shape
30HRB or so under state drops to 26HRB or so, is handled by annealing process early period so that the hardness of material reduces and the later period
Processable or tensility can be improved, and material is softer.And the β in 5083 alloys can be made by annealing process
It mutually grows up in grain boundaries and not will form grid film sequential like, thus substantially increase the corrosion resisting property of material, it is then right
Product by annealing carries out tension stiffening processing, and drawing process is as follows: when extrudate length is 25000mm, drawing
The stretching travel displacement range for stretching machine is set as 1250~2250mm, and tensile speed range is set as 40~20mm/s, stretches and becomes
After form quotient carries out stretch process for 5~9%, the mechanical property of 5083 aluminium alloy extrusions is at yield strength (240MPa-280MPa)
>=215MPa, tensile strength (310MPa-320MPa) >=300MPa, elongation after fracture A50 (19%-14%) >=10%, 5083
The mechanical property of aluminium alloy extrusions complies fully with the performance requirement under 5083-H116 state.The lattice meeting of material in drawing process
It is elongated along draw direction, increase the essence that dislocation density is alloy processing hardening when plastic deformation, the cold plasticity of aluminium alloy becomes
Shape is carried out by conventional crystals slipping, and with the increase of deformation extent, crystal grain and intercrystalline matter are along deformation
Direction is elongated, and forms fibr tissue again, the stretching strengthening process of 5083 aluminium alloy extrusions makes the concentration of dislocations between lattice
Increase to generate pinning effect and then strengthen between 5083 aluminium alloy grain sizes.In normal extrusion production technology, squeeze
The product of completion is by (0.5%-1.5%) after line stretch processing, and product is using stabilization processes process, at stabilisation
Reason temperature is respectively 120 DEG C, 220 DEG C, 320 DEG C, and soaking time is after (2-5) h is handled, and the mechanics yield strength of product exists respectively
180MPa, 160MPa, 140MPa, with the change of the parameters such as the extension of stabilization temperature and soaking time, the mechanical property of product
The yield strength of energy can decline therewith, this is because the crystal boundary position that the material that annealing process has changed is generated by processing hardening
Wrong concentration, the intergranular corrosion resistance of product are respectively (8-10) mg/cm2、(6-8)mg/cm2、(4-6)mg/cm2, product it is resistance to
Although corrosion among crystalline grains can with temperature increase and soaking time extension and improve, performance can also lose it is excessive, it is resistance to
Why corrosivity, which can increase, is the meeting as the temperature rises for intergranular due to product and grows up, intercrystalline distribution more
What is added is discontinuous.This patent is by first making annealing treatment product, so that product has higher corrosion resistance, it is then sharp again
The reasonable adjusting of drawing parameter is carried out to product with the bedroom 500T stretching-machine so that by squeeze production, stabilization processes,
The three phases such as drawing process control, which have been produced mechanical property and are significantly larger than in original 5083H112 i.e. GB/T6892, to be required: being bent
Take intensity >=125MPa, tensile strength >=270MPa, elongation after fracture >=10%.And the intergranular corrosion resistance performance of product reaches
(2-3)mg/cm2≤15mg/cm2(requirement in " China Classification Society material and welding conditions ").After the processing of different stretch deformation rate
5083 aluminium alloy extrusions products by the corrosion detecting methods such as G66 and G67 inspection after, 5083 aluminium alloy extrusions products
Testing result is respectively that G66 detection is N grades, and G67 intercrystalline corrosion testing result is (2-3) mg/cm2Much smaller than standard requirements
Mass area ratio loses 15mg/cm2.Reasonable setting to stretcher strain parameter, 5083 aluminium alloy extrusions of effective solution
The too low situation of online extrudate yield behavior, realizes the successful exploitation of 5083-H116 As-extruded profile, changes
The case where 5083-H116 aluminium alloy extrusions product can only produce rolled plate.
2, the processing technology of the present invention 5083 aluminium alloy extrusions peculiar to vessel, by being stretched simultaneously using 500T hydraulic tensioner
And the reasonable setting parameters such as stretching displacement and stretcher strain speed, the mechanical property of 5083 extrudates is effectively raised,
Scheduling and planning has gone out the product under 5083-H116 squeezed state.
Specific embodiment
Below by a preferred embodiment of the present invention will be described in detail.
Embodiment 1:
A kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel, comprising the following steps:
A, ingredient: 5083 aluminium alloy cast ingot each element mass percents proportion is as follows:
| Element | Si | Fe | Cu | Mn | Mg | Zn | Ti | Impurity | Al |
| Content | 0.40 | 0.40 | 0.10 | 0.70 | 4.80 | 0.25 | 0.15 | 0.15 | Surplus |
By prepared 5083 aluminium alloy stock be added smelting furnace in after evenly mixing melting be liquid aluminium alloy, by liquid
Aluminum alloy melt casting is aluminium alloy cast ingot；
B, it by the aluminium alloy cast ingot after founding after 540 DEG C of homogenizing anneal 16h, is placed in the extrusion cylinder of extruder and carries out
It squeezes, obtains 5083 aluminium alloy extrusions, wherein the length of 5083 aluminium alloy extrusions is 25000mm；
C, 5083 aluminium alloy extrusions after extruding is manually annealed, annealing temperature is 350 DEG C, annealing time 5h；
D, 5083 aluminium alloy extrusions after extruding is placed in stretching-machine and is stretched, 5083 aluminium alloy extrusions stretcher strains
Rate is 1%, and the maximum tension displacement of 5083 aluminium alloy extrusions is 250mm, the tensile speed 60mm/s of stretching-machine；
E, 5083 aluminium alloy extrusions after stretching step D are quenched, and the quenching mode of quenching treatment is air-cooled
With the cooling synchronous mode of atomization, quenched 5083 aluminium alloy extrusions temperature is 80~100 DEG C；
F, quenched 5083 aluminium alloy extrusions of step E being subjected to aging strengthening model, aging temp is 180~220 DEG C, when
The effect time is 5h.
Embodiment 2:
Embodiment 2 is the difference from embodiment 1 is that the drawing deformation of 5083 aluminium alloy extrusions is 3%, 5083 in step D
The maximum tension displacement of aluminium alloy extrusions is 750mm, the tensile speed 50mm/s of stretching-machine.
Embodiment 3:
Embodiment 3 is the difference from embodiment 1 is that the drawing deformation of 5083 aluminium alloy extrusions is 5%, 5083 in step D
The maximum tension displacement of aluminium alloy extrusions is 1250mm, the tensile speed 40mm/s of stretching-machine.
Embodiment 4:
Embodiment 4 is the difference from embodiment 1 is that the drawing deformation of 5083 aluminium alloy extrusions is 7%, 5083 in step D
The maximum tension displacement of aluminium alloy extrusions is 1750mm, the tensile speed 30mm/s of stretching-machine.
Embodiment 5:
Embodiment 5 is the difference from embodiment 1 is that the drawing deformation of 5083 aluminium alloy extrusions is 9%, 5083 in step D
The maximum tension displacement of aluminium alloy extrusions is 2250mm, the tensile speed 20mm/s of stretching-machine.
Comparative example:
Comparative example is the difference from embodiment 1 is that omit step D to the drawing process of 5083 aluminium alloy extrusions.
5083 aluminium alloy extrusions that comparative example and Examples 1 to 5 obtain carry out Mechanics Performance Testing, and test result is shown in Table
One:
Table one:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example | |
| Yield strength (Mpa) | 160 | 210 | 240 | 260 | 280 | 215 |
| Tensile strength (Mpa) | 295 | 300 | 310 | 310 | 320 | 300 |
| Elongation percentage (%) | 23 | 21 | 19 | 16 | 14 | 10 |
| G67 intercrystalline corrosion (mg/cm2) | 2.5 | 2.4 | 2.45 | 2.41 | 2.52 | 2.56 |
It can be seen that, embodiment 3~5, i.e. tensile speed range are 20~40mm/s from table one, drawing deformation is 5~
When 9%, the mechanical property of 5083 aluminium alloy extrusions is that yield strength is (240MPa-280MPa) >=215Mpa, and tensile strength is
(310MPa-320MPa) >=300Mpa, elongation after fracture are (19%-14%) >=10%, the mechanical property of 5083 aluminium alloy extrusions
The performance requirement under 5083-H116 state can be complied fully with.The main reason is that stretching strengthening process makes the position between lattice
Wrong concentration increases the result for generating pinning effect and then being strengthened to 5083 aluminium alloy crystal grain.
Different stretch deformation rate treated 5083 aluminium alloy extrusions are by the inspection of the corrosion detecting methods such as G66 and G67
After testing, the testing result of 5083 aluminium alloy extrusions is respectively that G66 detection is N grades, and G67 intercrystalline corrosion testing result is (2-3)
mg/cm2Mass area ratio much smaller than standard requirements loses 15mg/cm2。
Existing 5083-H116 plate can only be produced by the operation of rolling, few about under squeezed state in the market
5083-H116 profile, it is different that 5083-H116 is realized by the processing technology using the present invention 5083 aluminium alloy extrusions peculiar to vessel
The production process of profile squeezed online, and under the premise of guaranteeing that 5083 aluminium alloy extrusions corrosion resistances are constant greatly
Improve the yield strength of 5083 aluminium alloy extrusions.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (7)
1. a kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel, which comprises the following steps:
A, according to following weight fraction ratio 5083 aluminium alloy stocks of preparation: Si :≤0.4%, Fe :≤0.4%, Cu :≤0.10%,
Mn:0.7% ~ 0.9%, Mg:4.6%~4.8%, Zn :≤0.25%, Ti :≤0.15%, single impurity≤0.05%, impurity is total≤
Melting after evenly mixing is added in smelting furnace as liquid aluminium conjunction in prepared 5083 aluminium alloy stock by 0.15%, surplus Al
Liquid aluminium alloy founding is aluminium alloy cast ingot by gold；
B, it by the aluminium alloy cast ingot after founding after 520 ~ 540 DEG C of homogenize process 16h, is placed in the extrusion cylinder of extruder and carries out
It squeezes, obtains 5083 aluminium alloy extrusions；
C, 5083 aluminium alloy extrusions after extruding is manually annealed, annealing temperature be 320 ~ 350 DEG C, annealing time be 3 ~
5h；
D, 5083 aluminium alloy extrusions after annealing are placed in stretching-machine and are stretched, wherein the drawing of 5083 aluminium alloy extrusions
Stretching deformation rate is 5 ~ 9%, and the tensile speed of stretching-machine is 20 ~ 40mm/s；
E, 5083 aluminium alloy extrusions after stretching step D are quenched；
F, quenched 5083 aluminium alloy extrusions of step E is subjected to aging strengthening model.
2. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as described in claim 1, which is characterized in that step B homogenizes place
The aluminium alloy cast ingot of reason is placed in method when squeezing in extrusion cylinder using segmentally heating, the heating temperature on extruder extrusion cylinder head
It is 440 ~ 460 DEG C, the heating temperature at middle part is 440 ~ 460 DEG C, and the heating temperature of tail portion is 370 ~ 390 DEG C.
3. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as described in claim 1, which is characterized in that step B is after extruding
For 5083 aluminium alloy extrusions with a thickness of 5 ~ 7mm, width is 240 ~ 280mm.
4. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as described in claim 1, which is characterized in that step B is after extruding
5083 aluminium alloy extrusions are with a thickness of 6mm, width 250mm.
5. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as described in claim 2 ~ 4 is any, which is characterized in that step D is drawn
5083 aluminium alloy extrusions tensile elongation ranges after stretching are 10000 ~ 40000mm, 5083 aluminium alloy extrusions width after stretching≤
700mm。
6. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as claimed in claim 5, which is characterized in that step E quenching treatment
Quenching mode be air-cooled and the cooling synchronous mode of atomization, quenched 5083 aluminium alloy extrusions temperature are 80 ~ 100 DEG C.
7. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as claimed in claim 6, which is characterized in that step F aging temp
It is 180 ~ 220 DEG C, aging time is 3 ~ 8h.
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| CN110484790B (en) * | 2019-09-19 | 2020-11-13 | 广东澳美铝业有限公司 | Processing technology of aluminum alloy frame keel for ship |
| CN110629083B (en) * | 2019-11-05 | 2021-05-28 | 郑州明泰实业有限公司 | Marine 5083 aluminum alloy plate and preparation process thereof |
| CN110952007A (en) * | 2019-12-19 | 2020-04-03 | 天津忠旺铝业有限公司 | Preparation process of 5083-H116-state aluminum alloy |
| CN111020313A (en) * | 2019-12-26 | 2020-04-17 | 营口忠旺铝业有限公司 | Production process of 5-series aluminum alloy section |
| CN112547831B (en) * | 2020-11-24 | 2021-11-09 | 东北大学 | Large-width aluminum alloy ribbed plate, production method thereof and extrusion perforating needle |
| CN114309108A (en) * | 2021-12-09 | 2022-04-12 | 山东兖矿轻合金有限公司 | Extrusion forming method of oversized aluminum alloy integral wallboard for ships |
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|---|---|---|---|---|
| US3841919A (en) * | 1971-08-28 | 1974-10-15 | Showa Denko Kk | Aluminum-silicon-magnesium ternary superplastic alloy and method for manufacture thereof |
| EP1178125A2 (en) * | 1995-10-18 | 2002-02-06 | Pechiney Rhenalu | AlMg alloy with improved mechanical properties for welded constructions |
| CN107164666A (en) * | 2017-05-31 | 2017-09-15 | 辽宁忠旺集团有限公司 | 5083 the ships energetic plate of aluminium alloy and its extrusion process |
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2017
- 2017-10-30 CN CN201711053475.7A patent/CN107739928B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841919A (en) * | 1971-08-28 | 1974-10-15 | Showa Denko Kk | Aluminum-silicon-magnesium ternary superplastic alloy and method for manufacture thereof |
| EP1178125A2 (en) * | 1995-10-18 | 2002-02-06 | Pechiney Rhenalu | AlMg alloy with improved mechanical properties for welded constructions |
| CN107164666A (en) * | 2017-05-31 | 2017-09-15 | 辽宁忠旺集团有限公司 | 5083 the ships energetic plate of aluminium alloy and its extrusion process |
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