CN107739928A - 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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- CN107739928A CN107739928A CN201711053475.7A CN201711053475A CN107739928A CN 107739928 A CN107739928 A CN 107739928A CN 201711053475 A CN201711053475 A CN 201711053475A CN 107739928 A CN107739928 A CN 107739928A
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- aluminium alloy
- alloy extrusions
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- vessel
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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 extruding, annealing schedule is (320 350) DEG C × (3 5) h, so that material is organizationally annealed structure by crimp metaplasia, the hardness of product surface drops to 26HRB or so by 30HRB under squeezed state or so, the hardness reduction of material is handled by annealing process early stage and the later stage can process or tensility can be improved, material is softer；Drawing process after annealing is：When extrudate length is 25000mm, the stretching travel displacement range of stretching-machine is set as 1250~2250mm, draw speed range set is 40~20mm/s, drawing deformation is 5~9%, after stretch process being carried out to 5083 aluminium alloy extrusions after extruding, the mechanical property of 5083 aluminium alloy extrusions complies fully with the performance requirement under 5083 H116 states 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, is related to a kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel.
Background technology
Its structural material of the operating environment requirements of ship has high specific strength, toughness, corrosion resistance, antifatigue, shock resistance
And the combination property such as good weldability, the ship in marine environment is especially travelled, because seawater contains substantial amounts of Cl-, it is
A kind of typical electrolytic solution, there is very strong corrosivity, under this strong corrosive environment and stress, more require material peculiar to vessel
Material is with excellent electrochemically resistant corrosion and anti-stress corrosion performance.In traditional material, although steel and polymer-based compound
Material has a substantial amounts of application in shipbuilding, but aluminum alloy materials there is steel and high polymer material do not possess it is a series of
Combination property, high specific strength and corrosion resistance, excellent formability and weldability, easily reclaim and cause aluminium the features such as anti-aging
Application of the alloy in shipbuilding is more and more, and has a high potential, has a extensive future.
5xxx line aluminium alloys at present, there is higher intensity, good plasticity, corrosion stability and weldability, make the deck of boat,
Its critical role is shown in barnacle, hull understructure, is the important materials for establishing Ship Structure.
H1 represents simple work-hardened condition in 5083H112, without additional heat-treatment；The behind processing hardening code name H
Binary digit (1-9) represents the work-hardening capacity of product；The implication of 3rd bit digital, H112 tables behind processing hardening code name H
Show the alloy product suitable for thermo forming, have regulation requirement to its mechanical property.
5083 high-magnesium aluminum alloys due to it there is higher corrosion-resistant and weldability to be widely used in ship navigation
Deng field, the subject matter of extrusion process of production be product yield strength it is low, although the performance of product can meet
《Css materials and welding conditions》Middle 5083-H112 performance requirement is：Yield strength (140MPa~160MPa) >=125MPa,
Tensile strength (295MPa~310MPa) >=270MPa, elongation after fracture 22%~25% >=10%, but should in real material
Product is generally required during with higher intensity and with the power under preferable corrosion resisting property i.e. 5083-H116 states
Learn performance and corrosion resisting property.
The content of the invention
In view of this, the present invention can only produce production under 5083-H112 states to solve existing 5083 extrusion plate
Product, the yield strength of product is too low under 5083-H112 states, the problem of can not meeting use demand in ship naval vessels, there is provided one
The processing technology of kind 5083 aluminium alloy extrusions peculiar to vessel.
To reach above-mentioned purpose, the present invention provides a kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel, including following step
Suddenly：
A, 5083 aluminium alloy stocks are prepared according to following ratio of weight and number：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 adds up to≤0.15%, surplus Al, and 5083 aluminium alloy stocks prepared are added in smelting furnace and 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 recipient of extruder
In extruded, obtain 5083 aluminium alloy extrusions；
C, 5083 aluminium alloy extrusions after extruding are 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 stretched, wherein 5083 aluminium alloy extrusions
Drawing deformation≤10%, draw speed≤60mm/s of stretching-machine；
E, 5083 aluminium alloy extrusions after step D is stretched carry out Quenching Treatment；
F, 5083 aluminium alloy extrusions after step E is quenched carry out aging strengthening model.
Further, the aluminium alloy cast ingot of step B homogenize process is placed in when being extruded in recipient using the side of heat stepwise
Method, the heating-up temperature on extruder recipient head is 440~460 DEG C, and the heating-up temperature at middle part is 440~460 DEG C, and afterbody adds
Hot temperature is 370~390 DEG C.
Further, 5083 aluminium alloy extrusions thickness after step B extruding are 5~7mm, and width is 240~280mm.
Further, 5083 aluminium alloy extrusions thickness after step B extruding are 6mm, width 250mm.
Further, 5083 aluminium alloy extrusions tensile elongation scopes after step D stretchings are 10000~40000mm, after stretching
5083 aluminium alloy extrusions width≤700mm.
Further, the mode that the quenching mode of step E Quenching Treatments is air-cooled and atomization cooling is synchronous, 5083 after quenching
Aluminium alloy extrusions temperature is 80~100 DEG C.
Further, step F aging temps are 180~220 DEG C, and aging time is 3~8h.
The beneficial effects of the present invention are：
1st, the processing technology of the present invention 5083 aluminium alloy extrusions peculiar to vessel, original production technology can only extrude production 5083-
The product of H112 states, and the yield strength of product can not produce 5083-H116 states well below actual use requirements
Product.Now by directly manually being made annealing treatment to the product after the completion of online extruding, annealing schedule is (320-350) DEG C
× (3-5) h so that material is organizationally annealed structure by crimp metaplasia, and the hardness of product surface is by extruding shape
30HRB under state or so drops to 26HRB or so, and hardness reduction and the later stage of material are handled by annealing process early stage
It can process or tensility can be improved, material is softer.And β that can be in 5083 alloys by annealing process
Mutually grown up in grain boundaries and grid film sequential like will not be formed, 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, draw
The stretching travel displacement range for stretching machine is set as 1250~2250mm, and draw speed range set is 40~20mm/s, and stretching 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 states.The lattice meeting of material in drawing process
Elongated along draw direction, increase dislocation density is the essence of alloy processing hardening during plastic deformation, and the cold plasticity of aluminium alloy becomes
Shape is carried out by the crystals slipping of routine, 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 causes the concentration of dislocations between lattice
Increase is so as to producing pinning effect and then strengthening 5083 aluminium alloy grain sizes.In normal extrusion production technology, extruding
The product of completion is by (0.5%-1.5%) after line stretch processing, and product passes through stabilization processes process again, at stabilisation
It is respectively 120 DEG C, 220 DEG C, 320 DEG C to manage temperature, and soaking time is that the mechanics yield strength of product exists respectively after (2-5) h is handled
180MPa, 160MPa, 140MPa, with the change of the parameters such as the extension of stabilization temperature and soaking time, the mechanical property of product
Can yield strength can decline therewith, this is due to the material that has changed of annealing process crystal boundary position as caused by processing hardening
Wrong concentration, the intergranular decay resistance of product is 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 raise and soaking time extension and improve, performance can also lose it is excessive, it is resistance to
It is due to that the intergranular of product is met with the rise of temperature and grown up that why corrosivity, which can raise, in intercrystalline distribution more
What is added is discontinuous.This patent to product by first making annealing treatment so that product has higher corrosion resistance, then sharp again
The reasonable adjusting of drawing parameter is carried out to product with 500T bedrooms stretching-machine so that by extrude 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：Bend
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(《CCS material and welding conditions》In requirement).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 detections are N levels, and G67 intercrystalline corrosion testing result is (2-3) mg/cm2Much smaller than standard requirement
Mass area ratio loses 15mg/cm2.Reasonable setting to stretcher strain parameter, effectively solves 5083 aluminium alloy extrusions
The too low situation of online extrudate yield behavior, realizes the successful exploitation of 5083-H116 As-extruded section bars, changes
5083-H116 aluminium alloy extrusions product can only produce the situation of rolled plate.
2nd, the processing technology of the present invention 5083 aluminium alloy extrusions peculiar to vessel, is stretched simultaneously by using 500T hydraulic tensioners
And the rational mechanical property for setting the parameter such as stretching displacement and stretcher strain speed, effectively raising 5083 extrudates,
The product that scheduling and planning has gone out under 5083-H116 squeezed states.
Embodiment
The preferred embodiments of the present invention will be described in detail below.
Embodiment 1：
A kind of processing technology of 5083 aluminium alloy extrusions peculiar to vessel, comprises the following steps：
A, dispensing：5083 aluminium alloy cast ingot each element mass percents proportioning 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 |
It is liquid aluminium alloy that 5083 aluminium alloy stocks prepared are added in smelting furnace to melting after uniformly mixing, by liquid
Aluminum alloy melt casting is aluminium alloy cast ingot；
B, by the aluminium alloy cast ingot after founding after 540 DEG C of homogenizing anneal 16h, it is placed in the recipient of extruder and carries out
Extruding, obtains 5083 aluminium alloy extrusions, wherein the length of 5083 aluminium alloy extrusions is 25000mm；
C, 5083 aluminium alloy extrusions after extruding are manually annealed, annealing temperature is 350 DEG C, annealing time 5h；
D, 5083 aluminium alloy extrusions after extruding are placed in stretching-machine and stretched, 5083 aluminium alloy extrusions stretcher strains
Rate is 1%, and the maximum tension displacement of 5083 aluminium alloy extrusions is 250mm, the draw speed 60mm/s of stretching-machine；
E, 5083 aluminium alloy extrusions after step D is stretched carry out Quenching Treatment, and the quenching mode of Quenching Treatment is air-cooled
The synchronous mode with atomization cooling, 5083 aluminium alloy extrusions temperature after quenching are 80~100 DEG C；
F, 5083 aluminium alloy extrusions after step E is quenched carry out aging strengthening model, and aging temp is 180~220 DEG C, when
The effect time is 5h.
Embodiment 2：
The difference of embodiment 2 and embodiment 1 is 3%, 5083 in the drawing deformation of 5083 aluminium alloy extrusions in step D
The maximum tension displacement of aluminium alloy extrusions is 750mm, the draw speed 50mm/s of stretching-machine.
Embodiment 3：
The difference of embodiment 3 and embodiment 1 is 5%, 5083 in the drawing deformation of 5083 aluminium alloy extrusions in step D
The maximum tension displacement of aluminium alloy extrusions is 1250mm, the draw speed 40mm/s of stretching-machine.
Embodiment 4：
The difference of embodiment 4 and embodiment 1 is 7%, 5083 in the drawing deformation of 5083 aluminium alloy extrusions in step D
The maximum tension displacement of aluminium alloy extrusions is 1750mm, the draw speed 30mm/s of stretching-machine.
Embodiment 5：
The difference of embodiment 5 and embodiment 1 is 9%, 5083 in the drawing deformation of 5083 aluminium alloy extrusions in step D
The maximum tension displacement of aluminium alloy extrusions is 2250mm, the draw speed 20mm/s of stretching-machine.
Comparative example：
The difference of comparative example and embodiment 1 is to omit drawing process of the step D to 5083 aluminium alloy extrusions.
5083 aluminium alloy extrusions that comparative example obtains with embodiment 1~5 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. draw speed scope be 20~40mm/s from table one, drawing deformation for 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 states can be complied fully with.Its main cause is to stretch strengthening process to cause position between lattice
Wrong concentration increase is so as to the result for producing pinning effect and then being strengthened to 5083 aluminium alloy crystal grain.
5083 aluminium alloy extrusions after the processing of different stretch deformation rate 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 detections are N levels, and G67 intercrystalline corrosion testing result is (2-3)
mg/cm2Mass area ratio much smaller than standard requirement loses 15mg/cm2。
Existing 5083-H116 sheet materials can only be produced by the operation of rolling, and in the market is few under squeezed state
5083-H116 section bar, it is different to realize 5083-H116 by using the processing technology of the present invention 5083 aluminium alloy extrusions peculiar to vessel
The production process of the online extruding of section bar, and on the premise of ensureing that 5083 aluminium alloy extrusions decay resistances are constant greatly
Improve the yield strength of 5083 aluminium alloy extrusions.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art 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, it is characterised in that comprise the following steps：
A, 5083 aluminium alloy stocks are prepared according to following ratio of weight and number：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% is miscellaneous
Matter adds up to≤0.15%, surplus Al, and 5083 aluminium alloy stocks prepared are added in smelting furnace to melting after uniformly mixing and are
Liquid aluminium alloy, it 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 recipient of extruder
Row extruding, obtains 5083 aluminium alloy extrusions；
C, 5083 aluminium alloy extrusions after extruding are 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 stretched, wherein the drawing of 5083 aluminium alloy extrusions
Stretch deformation rate≤10%, draw speed≤60mm/s of stretching-machine；
E, 5083 aluminium alloy extrusions after step D is stretched carry out Quenching Treatment；
F, 5083 aluminium alloy extrusions after step E is quenched carry out aging strengthening model.
2. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as claimed in claim 1, it is characterised in that step B homogenizes place
The aluminium alloy cast ingot of reason is placed in when being extruded in recipient using the method for heat stepwise, the heating-up temperature on extruder recipient head
For 440~460 DEG C, the heating-up temperature at middle part is 440~460 DEG C, and the heating-up temperature of afterbody is 370~390 DEG C.
3. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as claimed in claim 1, it is characterised in that after step B extruding
5083 aluminium alloy extrusions thickness are 5~7mm, and width is 240~280mm.
4. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as claimed in claim 1, it is characterised in that after step B extruding
5083 aluminium alloy extrusions thickness are 6mm, width 250mm.
5. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as described in claim 2~4 is any, it is characterised in that step D is drawn
5083 aluminium alloy extrusions tensile elongation scopes 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, it is characterised in that step E Quenching Treatments
Quenching mode for mode air-cooled and that atomization cooling is synchronous, 5083 aluminium alloy extrusions temperature after quenching are 80~100 DEG C.
7. the processing technology of 5083 aluminium alloy extrusions peculiar to vessel as claimed in claim 6, it is characterised in that step F aging temps
For 180~220 DEG C, aging time is 3~8h.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110484790A (en) * | 2019-09-19 | 2019-11-22 | 广东澳美铝业有限公司 | A kind of processing technology of marine aluminium alloy frame keel |
| CN110629083A (en) * | 2019-11-05 | 2019-12-31 | 郑州明泰实业有限公司 | Marine 5083 aluminum alloy plate and processing technology 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 |
| CN112547831A (en) * | 2020-11-24 | 2021-03-26 | 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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| 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 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110484790A (en) * | 2019-09-19 | 2019-11-22 | 广东澳美铝业有限公司 | A kind of processing technology of marine aluminium alloy frame keel |
| 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 |
| CN110629083A (en) * | 2019-11-05 | 2019-12-31 | 郑州明泰实业有限公司 | Marine 5083 aluminum alloy plate and processing technology 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 |
| CN112547831A (en) * | 2020-11-24 | 2021-03-26 | 东北大学 | Large-width aluminum alloy ribbed plate, production method thereof and extrusion perforating needle |
| 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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|---|---|
| CN107739928B (en) | 2019-07-16 |
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