CN105886855B - A kind of aluminium alloy thick plate and its production method - Google Patents

A kind of aluminium alloy thick plate and its production method Download PDF

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Publication number
CN105886855B
CN105886855B CN201610260303.6A CN201610260303A CN105886855B CN 105886855 B CN105886855 B CN 105886855B CN 201610260303 A CN201610260303 A CN 201610260303A CN 105886855 B CN105886855 B CN 105886855B
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aluminium alloy
thick plate
rolling
cast ingot
temperature
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CN201610260303.6A
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CN105886855A (en
Inventor
程仁策
吕正风
张华�
黄同瑊
于芳
赵巍
程志远
史春丽
张启东
肖富来
辛涛
房洪杰
祝贞凤
张吉松
孙玉梅
Original Assignee
山东南山铝业股份有限公司
龙口南山铝压延新材料有限公司
航鑫材料科技有限公司
烟台南山学院
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08Alloys based on aluminium with magnesium as the next major constituent with silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047Changing 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 magnesium as the next major constituent

Abstract

The invention discloses a kind of aluminium alloy thick plate and its production method.The chemical composition and mass percent of the slab be:Si 0~0.10%, Fe 0~0.20%, Mn 0.5~0.80%, Mg 4.1~4.6%, Cr 0.15~0.20%, Zn 0~0.15%, Ti 0~0.10%, surplus Al.Method includes:Dispensing → melting → converter → furnace side refining → standing → casting → sawing → milling face → homogenizing cast ingot → hot roughing → recrystallization temperature is with lower band warm-rolling system → pre-stretching → stabilizing annealing → finished product.Present invention reduces process cycle, reduces process costs, meanwhile, Fe, Si are reduced to corrosion resistance and weldability detrimental effect, improve the marine aluminum alloy plate for obtaining high-quality on the whole.

Description

A kind of aluminium alloy thick plate and its production method
Technical field
The invention belongs to the technical field of marine aluminium alloy production, more particularly to a kind of marine aluminium alloy slab and its production Method.
Background technology
5083 aluminium alloys belong to the not heat-treatable strengthened type wrought aluminium alloy of Al-Mg systems, have in shipbuilding industry extensive Using.Because the alloy has higher sensitiveness to intercrystalline corrosion and Peeling Corrosion, existing processing method is:After cold deformation Stabilizing annealing processing is carried out, to change the unstability of its tissue, β is eliminated and hands down the nethike embrane of grain boundary precipitate, so as to improve The corrosion stability of 5083 sheet alloys.But the cold deformation of prior art slab needs factory to have chip milling train, invisible increase equipment Amount;Secondly, the process flow of prior art is long and complex.At present, existing patent:CN201410777367.4; CN201410776263.1;CN201410776164.3;The A of CN 104388854, have the characteristics of common to be:5083 aluminium alloys are cast Ingot successively by milling face, heating, hot roughing, it is cool roll, shear, tension straingtening sawing scale, obtain 5083 aluminium alloy thick plate peculiar to vessel. Cool temperature of rolling still falls within hot rolling scope in 280~340 DEG C of recrystallization zone.
The content of the invention
It is an object of the invention to provide a kind of marine aluminium alloy 5083H116 slabs, it is on the basis of nominal chemical composition On optimize and (see the table below 1), the alloy compositions of optimization, plasticity, corrosion resistance and the weldability of aluminium alloy plate can be improved Energy.
The nominal composition of table 1 is compared with chemical composition of the present invention
Another object of the present invention also resides in a kind of life for the marine aluminium alloy 5083H116 slabs for providing short process flow Production method.
The present invention adopts the following technical scheme that:
A kind of aluminium alloy thick plate, it is characterised in that the chemical composition and mass percent of the aluminium alloy thick plate be:Si 0 ~0.10%, Fe 0~0.20%, Mn 0.5~0.80%, Mg 4.1~4.6%, Cr 0.15~0.20%, Zn 0~ 0.15%, Ti 0~0.10%, surplus Al.
A kind of above-mentioned aluminium alloy thick plate production method, it is characterised in that methods described includes:Dispensing → melting → converter → Furnace side refining → standing → casting → sawing → milling face → homogenizing cast ingot → hot roughing → recrystallization temperature is with lower band temperature Rolling → pre-stretching → stabilizing annealing → finished product.
According to the above method, it is characterised in that methods described includes:
(1) melting and casting:Prepare raw material by the chemical composition and mass percent of aluminium alloy thick plate, 720~750 Smelting aluminium alloy raw material under conditions of DEG C, when raw material of aluminum alloy 50%~60% is molten into aluminium liquid, electromagnetic agitation is opened, when Raw material of aluminum alloy all fusing after, add component additive agent, and skimmed, adjusting component, transfer melt to holding furnace, enter Row furnace side Ar+Cl2Gaseous mixture refine, composition it is qualified and casting make adequate preparation after, melt stand appropriate time, in melt temperature Through online processing under the conditions of 700~710 DEG C, aluminium alloy cast ingot is poured into;
(2) milling face:By step (1) aluminium alloy cast ingot cutting head cutting tail, milling face;
(3) hot roughing:Aluminium alloy cast ingot after step (2) processing is heated to 480~570 in step-by-step movement promotes stove DEG C, 10h is incubated, is then rolled to the middle sheet material of 1.3~1.4 × finished product thickness, finishing temperature is 330~410 DEG C;
(4) band warm-rolling system:Among the aluminium alloy that step (3) is obtained below sheet material on-line cooling to recrystallization temperature, Band temperature is rolling to finished product thickness in 230~260 DEG C of temperature ranges, and rolling deformation rate is 30~40%;
(5) stabilizing annealing is handled:The aluminium alloy thick plate that step (4) is obtained carries out set deformation volume 0.5~1.5% Pre-tension deformation, then in 200~240 DEG C of annealings, soaking time is 2h~4h.
Beneficial effects of the present invention:
1. providing a kind of marine aluminium alloy 5083H116 slabs, corrosion resistance and the welding of aluminum alloy plate materials can be improved Performance.
2. in production method of the present invention during melt melting and casting, cleaning molten uses multi-stage combination cleaning molten skill Art is (i.e.:It is mixed gas refining in smelting, melt stove, online plural serial stage SNIF degasification, double since original spreads material selection Level ceramic filter, capping the kinds of processes measure such as chute preheating and drying is anti-pollution, exclude the gas in melt, slag inclusion, obtain The technology of purer melt), ingot metallurgy quality is reached the level of High Purity, meet ingot metallurgy quality:Crystal grain 1 grade of degree;[H]≤0.1ml/100gAl;Na < 2PPm;Ca < 4PPm;Slag N20(size is more than 20 μm to < 50K/kg in per Kg aluminium Slag content < 50,000).The forming property and mechanical property of product are more excellent.
3. production method of the present invention uses replaces cold-rolling deformation with recrystallization temperature lower band warm-rolling system+pre-stretching, make process Flow shortens, and reduces process costs, improves quality, obtains the marine aluminium alloy slab of high quality, before having extensive market Scape and significant economic benefit.
Brief description of the drawings
Fig. 1 is grain structure of the aluminium alloy thick plate of the present invention after 200 DEG C/2h annealing;
Fig. 2 is grain structure of the aluminium alloy thick plate of the present invention after 220 DEG C/4h annealing;
Fig. 3 is grain structure of the aluminium alloy thick plate of the present invention after 240 DEG C/2h annealing.
Embodiment
The aluminium alloy thick plate of the present invention, chemical composition and mass percent are:Si 0~0.10%, Fe 0~0.20%, Mn 0.5~0.80%, Mg 4.1~4.6%, Cr 0.15~0.20%, Zn 0~0.15%, Ti 0~0.10%, surplus are Al.The production method of the present invention includes:Dispensing → melting → converter → furnace side refining → standing → casting → sawing → milling face → Homogenizing cast ingot → hot roughing → recrystallization temperature is with lower band warm-rolling system → pre-stretching → stabilizing annealing → finished product.
With reference to some specific embodiments, the present invention is further described.
A kind of marine aluminium alloy (5083H116) slab, its chemical composition and mass percent such as table 2.
The alloying component measured value (wt%) of table 2
One of any described production method of marine aluminium alloy 5083H116 slabs of one of example 1~3, including following step Suddenly:
(1) melting and casting:It is accurate by the chemical composition and mass percent of any described aluminium alloy thick plate of example 1~3 Standby raw material, wherein, solid material accounts for 40%, and I and II waste material is no more than 40%, and remaining is electrolyte.At 720~750 DEG C Under the conditions of smelting aluminium alloy raw material, when raw material of aluminum alloy 50%~60% is molten into aluminium liquid, open electromagnetic agitation, when aluminium close Golden raw material all after fusing (720 DEG C), add component additive agent, and are skimmed, adjusting component, transfer melt to insulation Stove, carry out furnace side Ar+Cl2 gaseous mixtures refining (STAS), composition it is qualified and casting make adequate preparation after, melt stand appropriate time, Through online (SNIF degasification, CCF filterings (30PPI+50PPI), crystal grain refinement) processing under the conditions of 700~710 DEG C of melt temperature, Pour into aluminium alloy cast ingot.Ingot metallurgy quality meets:1 grade of grain size;[H]=0.079ml/100gAl;Na < 2ppm;Ca < 4PPM;Slag N20< 30K/kg
(2) milling face:By step (1) aluminium alloy cast ingot cutting head cutting tail, milling face.
(3) hot roughing:Aluminium alloy cast ingot after step (2) processing is heated to 560 DEG C/8h+ in step-by-step movement promotes stove 480 DEG C/2h, the middle sheet material of (1.3~1.4 × finished product thickness), finish to gauge temperature are then rolled in the hot hot rough rolling mill groups of 4100mm Spend for 351 DEG C.
(4) band warm-rolling system:240~260 DEG C of sheet material on-line cooling among the aluminium alloy that step (3) is obtained, band warm-rolling system To finished product thickness 16.13mm.Rolling deformation rate is 36%.
(5) stabilizing annealing is handled:The aluminium alloy thick plate that step (4) is obtained carries out the prestretching of set deformation volume 0.8% Stretch deformation.Then in 200 DEG C of annealings, soaking time 2h.
The two of the production method of any described marine aluminium alloy 5083H116 slabs of one of example 1~3, including following step Suddenly:
(1) melting and casting:It is accurate by the chemical composition and mass percent of any described aluminium alloy thick plate of example 1~3 Standby raw material, wherein, solid material accounts for 35%, and I and II waste material is no more than 35%, and remaining is electrolyte.At 720~750 DEG C Under the conditions of smelting aluminium alloy raw material, when raw material of aluminum alloy 50%~60% is molten into aluminium liquid, open electromagnetic agitation, when aluminium close Golden raw material all after fusing (720 DEG C), add component additive agent, and are skimmed, adjusting component, transfer melt to insulation Stove, carry out furnace side Ar+Cl2Gaseous mixture refine (STAS), composition it is qualified and casting make adequate preparation after, melt stand appropriate time, Through online (SNIF degasification, CCF filterings (30PPI+50PPI), crystal grain refinement) processing under the conditions of 700~710 DEG C of melt temperature, Pour into aluminium alloy cast ingot.Ingot metallurgy quality meets:1 grade of grain size;[H]=0.073ml/100gAl;Na < 2ppm;Ca < 4PPM;Slag N20< 30K/kg
(2) milling face:By step (1) aluminium alloy cast ingot cutting head cutting tail, milling face.
(3) hot roughing:Aluminium alloy cast ingot after step (2) processing is heated to 560 DEG C/8h+ in step-by-step movement promotes stove 480 DEG C/2h, the middle sheet material of (1.3~1.4 × finished product thickness), finish to gauge temperature are then rolled in the hot hot rough rolling mill groups of 4100mm Spend for 338 DEG C.
(4) band warm-rolling system:240~260 DEG C of sheet material on-line cooling among the aluminium alloy that step (3) is obtained, band warm-rolling system To finished product thickness 16.16mm.Rolling deformation rate is 25.4%.
(5) stabilizing annealing is handled:The aluminium alloy thick plate that step (4) is obtained carries out the prestretching of set deformation volume 1.0% Stretch deformation.Then in 220 DEG C of annealings, soaking time 4h.
The three of the production method of any described marine aluminium alloy 5083H116 slabs of one of example 1~3, including following step Suddenly:
(1) melting and casting:It is accurate by the chemical composition and mass percent of any described aluminium alloy thick plate of example 1~3 Standby raw material, wherein, solid material accounts for 40%, and I and II waste material is no more than 40%, and remaining is electrolyte.At 720~750 DEG C Under the conditions of smelting aluminium alloy raw material, when raw material of aluminum alloy 50%~60% is molten into aluminium liquid, open electromagnetic agitation, when aluminium close Golden raw material all after fusing (720 DEG C), add component additive agent, and are skimmed, adjusting component, transfer melt to insulation Stove, carry out furnace side Ar+Cl2Gaseous mixture refine (STAS), composition it is qualified and casting make adequate preparation after, melt stand appropriate time, Through online (SNIF degasification, CCF filterings (30PPI+50PPI), crystal grain refinement) processing under the conditions of 700~710 DEG C of melt temperature, Pour into aluminium alloy cast ingot.Ingot metallurgy quality meets:1 grade of grain size;[H]=0.081ml/100gAl;Na < 2ppm;Ca < 4PPM;Slag N20< 30K/kg
(2) milling face:By step (1) aluminium alloy cast ingot cutting head cutting tail, milling face.
(3) hot roughing:Aluminium alloy cast ingot after step (2) processing is heated to 560 DEG C/8h+ in step-by-step movement promotes stove 480 DEG C/2h, the middle sheet material of (1.3~1.4 × finished product thickness), finish to gauge temperature are then rolled in the hot hot rough rolling mill groups of 4100mm Spend for 350 DEG C.
(4) band warm-rolling system:240~260 DEG C of sheet material on-line cooling among the aluminium alloy that step (3) is obtained, band warm-rolling system To finished product thickness 16.25mm.Rolling deformation rate is 35.4%.
(5) stabilizing annealing is handled:The aluminium alloy thick plate that step (4) is obtained carries out the prestretching of set deformation volume 1.5% Stretch deformation.Then in 240 DEG C of annealings, soaking time 2h.
Taken on one of any production method production slab of marine aluminium alloy 5083H116 slabs described in example 1~3 Longitudinal sample, at room temperature, mechanical property, anti intercrystalline corrosion and the Peeling Corrosion of aluminium alloy thick plate are detected by ASTM B928 requirements Performance and welding performance.Its result is as shown in table 3.It can be seen that the combination property of 5083H116 slabs is preferable.Fig. 1-Fig. 3 is Grain structures of the 5083H116 after different annealing.
5083H116 Plate properties detect table 3 at room temperature

Claims (1)

1. a kind of production method of aluminium alloy thick plate, it is characterised in that methods described includes:Dispensing → melting → converter → furnace side Refining → standing → casting → sawing → milling face → homogenizing cast ingot → hot roughing → recrystallization temperature is with lower band warm-rolling system → pre-stretching → stabilizing annealing → finished product;
Specifically include following steps:
(1) melting and casting:Prepare raw material by the chemical composition and mass percent of aluminium alloy thick plate, at 720~750 DEG C Under the conditions of smelting aluminium alloy raw material, when raw material of aluminum alloy 50%~60% is molten into aluminium liquid, open electromagnetic agitation, when aluminium close Golden raw material all after fusing, add component additive agent, and are skimmed, adjusting component, transfer melt to holding furnace, carry out stove Side Ar+Cl2Gaseous mixture refine, composition it is qualified and casting make adequate preparation after, melt stand appropriate time, melt temperature 700~ Through online processing under the conditions of 710 DEG C, aluminium alloy cast ingot is poured into;
(2) milling face:By step (1) aluminium alloy cast ingot cutting head cutting tail, milling face;
(3) hot roughing:Aluminium alloy cast ingot after step (2) processing is heated to 480~570 DEG C in step-by-step movement promotes stove, protected Warm 10h, is then rolled to the middle sheet material of (1.3~1.4) × finished product thickness, and finishing temperature is 330~410 DEG C;
(4) band warm-rolling system:Among the aluminium alloy that step (3) is obtained below sheet material on-line cooling to recrystallization temperature, 230~ Band temperature is rolling to finished product thickness in 260 DEG C of temperature ranges, and rolling deformation rate is 30~40%;
(5) stabilizing annealing is handled:The aluminium alloy thick plate that step (4) is obtained carries out the prestretching of set deformation volume 0.5~1.5% Deformation is stretched, then in 200~240 DEG C of annealings, soaking time is 2h~4h;
Wherein, the chemical composition of aluminium alloy thick plate and mass percent are:Si 0~0.10%, Fe 0~0.20%, Mn 0.5 ~0.80%, Mg 4.1~4.6%, Cr 0.15~0.20%, Zn 0~0.15%, Ti 0~0.10%, surplus Al.
CN201610260303.6A 2016-04-25 2016-04-25 A kind of aluminium alloy thick plate and its production method CN105886855B (en)

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CN105908025A (en) * 2016-06-12 2016-08-31 山东南山铝业股份有限公司 Aluminum alloy thick plate and production method thereof
CN105925858A (en) * 2016-06-12 2016-09-07 山东南山铝业股份有限公司 Aluminum alloy sheet and production method thereof
CN106282694A (en) * 2016-09-20 2017-01-04 池州市安安精工铝业有限公司 A kind of high-strength abrasion-proof aluminium alloy extrusions and preparation method thereof
CN106917017A (en) * 2017-03-28 2017-07-04 山东南山铝业股份有限公司 Aluminum alloy plate materials and its production method
CN107164666B (en) * 2017-05-31 2018-08-14 辽宁忠旺集团有限公司 The energetic plate of 5083 ship aluminium alloys and its extrusion process
CN108388706A (en) * 2018-02-01 2018-08-10 广西南南铝加工有限公司 The computational methods of drawing force and its application in a kind of aluminum alloy plate materials preparation process
CN109022958A (en) * 2018-09-18 2018-12-18 天津忠旺铝业有限公司 A kind of manufacturing method of 5083 aluminium alloy thick plate peculiar to vessel
CN109355535B (en) * 2018-11-29 2020-11-06 天津忠旺铝业有限公司 Preparation method of 5083 aluminum alloy plate
CN110042283A (en) * 2019-05-08 2019-07-23 烟台南山学院 Strong Alcoa plate preparation method in one kind

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