CN106756285B - A kind of preparation method of 6022 aluminum alloy plate materials - Google Patents

A kind of preparation method of 6022 aluminum alloy plate materials Download PDF

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Publication number
CN106756285B
CN106756285B CN201611006519.6A CN201611006519A CN106756285B CN 106756285 B CN106756285 B CN 106756285B CN 201611006519 A CN201611006519 A CN 201611006519A CN 106756285 B CN106756285 B CN 106756285B
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plate
room temperature
cold
rolled
aluminum alloy
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CN201611006519.6A
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CN106756285A (en
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田妮
王光东
贾存发
张泽宇
许圆
赵刚
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东北大学
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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
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent
    • 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
    • C22F1/043Changing 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 silicon as the next major constituent

Abstract

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:Prepare 6022 aluminium alloy cast ingots;Be heated to 400~480 DEG C, after insulation hot rolling obtain hot rolled plate;Hot rolled plate is heated to 420~440 DEG C, room temperature is furnace-cooled to after insulation, cold rolling obtains cold-reduced sheet;Placed again through solution treatment, room temperature, Pre-aging treatment, and room temperature placement, as T4P states again, 6022 aluminum alloy plate materials are made.Ingot casting conventional high temperature Homogenization Treatments are the method reduce, shorten technological process, save the energy, production efficiency is improved, cost is greatly lowered;And it can implement on existing aluminium alloy production line, it is not necessary to increase equipment and technology investment, it is simple to operate;Be made in 6022 aluminum alloy plate materials superfluous crystalline phase particle size is tiny, Dispersed precipitate, beneficial to 6022 aluminium sheet punching performances are improved, realize the performance requirement in reducing cost while fully meeting punching production.

Description

A kind of preparation method of 6022 aluminum alloy plate materials

Technical field:

The invention belongs to technical field of aluminum alloy technology, and in particular to a kind of preparation method of 6022 aluminum alloy plate materials.

Background technology:

Environmental pollution, energy crisis and safe three major issues are brought while auto industry high speed development.Due to Automobile Body accounts for 30% of complete vehicle weight or so, and it is current automobile loss of weight to reduce energy to use light material to substitute traditional Body Steel Plate One of consumption, the most directly effective approach for reducing pollution, lifting running car stationarity and security.It is wherein heat-treatable strengthened 6xxx line aluminium alloys due to high specific strength and specific stiffness, good formability and baking hardening ability, excellent subtracting The features such as shake shock resistance, easily recovery against corrosion, has become preferable lightweight automotive car body panel material.Past attempts are used to produce The aluminium sheet species of body of a motor car mainly has 6009-T4P, 6010-T4P, 6111-T4P, 6016-T4P, 6022-T4P etc..Wherein, Because 6022 aluminium alloys not only have higher intensity, and there is higher excellent corrosion resisting property than 6111 aluminium alloys, it is this kind of Car body of aluminum alloy plate is used widely in north America region, and Alcoa Chinalcos are that 6022-T4E29 (is heat-treated) Shen for inside Please patent protection, and put into industrialized production and in Ford Crow Victoria, Crand Marquis and It is applied on the outside plate of Taurus/Sable vehicles and many inner panels.However, aluminum current alloy car body panel material cost is to pass 2~4 times of car body panel of uniting material-steel plate, this seriously inhibits the process of body of a motor car calorize.Therefore, 6022 aluminium alloys are reduced The production cost of car body panel is imperative.

Body of a motor car is generally all by semi-continuous casting (Direct with the conventional machining process of 6022 aluminum alloy plate materials Chill Casting, DC casting) method prepares alloy cast ingot, Homogenization Treatments are then carried out to eliminate ingot casting dendritic segregation rush Enter elements diffusion uniformly and improve hot-working character.Typically above 540 DEG C of 6022 aluminium alloy cast ingot Homogenization Treatments temperature, are protected The warm time significantly improves production cost more than 24h, not only time-consuming power consumption, the serious production efficiency that reduces, it is notable that uniformly Change processing can make in alloy the mainly superfluous crystalline phase nodularization containing AlFeMnSi, roughening and is distributed along dendrite border, it is possible to The formability of follow-up sheet material can be reduced.Therefore, body of a motor car is developed with the short streamline production technology of 6022 aluminum alloy plate materials to shorten Streamline is produced, saves the energy, improves production efficiency, reduces car body of aluminum alloy plate production cost, and ensure that its sheet material has simultaneously The research work of good mechanical property has stronger innovative and very strong scientific meaning and actual application value.

The content of the invention:

The object of the invention is to provide a kind of preparation method of 6022 aluminum alloy plate materials, and the preparation method is without high temperature The direct hot rolling of Homogenization Treatments, Pre-aging treatment can meet motor vehicle bodywork component after cold rolling, solid solution water quenching again after annealing Deep drawability and baking and hardening performance requirement, this method can shorten production procedure, save the energy, be greatly lowered and be produced into This.

To achieve the above object, the present invention uses following technical scheme:

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:Prepare 6022 aluminium alloy cast ingots;

(2) heat:By 6022 aluminium alloy cast ingots, 400~480 DEG C are heated to, is incubated 4~12h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, is made hot rolled plate, hot rolling plate thickness is 3~ 6mm;

(4) intermediate annealing:Hot rolled plate is heated to 420~440 DEG C, after being incubated 1~2h, room temperature is furnace-cooled to, is annealed State rolls plate;

(5) cold rolling:Annealed state is rolled into plate, carries out cold rolling, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness is 0.8~1.2mm;

(6) solution treatment:Solution treatment is carried out to cold-reduced sheet, rolls plate after forming solution treatment;Wherein, solution treatment plus Hot temperature is 535~550 DEG C, and soaking time is 10~15min, and the type of cooling is water quenching to room temperature;

(7) room temperature is placed:5~30min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, rolls plate after forming Pre-aging treatment;Its In, pre-ageing treatment temperature is 140~190 DEG C, and the Pre-aging treatment time is 5~20min, and the type of cooling is to be air-cooled to room temperature;

(9) room temperature is placed:To rolling plate after Pre-aging treatment, carry out room temperature and place more than 4 weeks, as T4P states, be made 6022 Aluminum alloy plate materials.

In described step (1), composition and its mass percent that 6022 aluminium alloy cast ingots contain are:Si:0.80~ 1.50%, Mg:0.45~0.70%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤ 0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al.

In described step (1), 6022 aluminium alloy cast ingots use direct water-cooling semi-continuous casting (Direct Chill Semi-continuous Casting, abbreviation DC are cast) it is made.

In described step (1), 6022 aluminium alloy cast ingots are handled by crop milling face.

In described step (3), hot rolling mode is that cross rolling is combined with longitudinally rolling.

Beneficial effects of the present invention:

(1) the inventive method reduces ingot casting conventional high temperature Homogenization Treatments, shortens technological process, saves the energy, carries High efficiency, considerably reduce the production cost of 6022 car body of aluminum alloy plates.

(2) present invention process can be implemented on existing aluminium alloy production line, without changing existing frock, it is not necessary to which increase is set Standby and technology investment, it is simple to operate feasible.

(3) the superfluous crystalline phase particle size prepared by the inventive method in 6022 aluminum alloy plate materials of processing is tiny, more Distribution is dissipated, is advantageous to improve the deep drawability of 6022 aluminum alloy plate materials, realizes and fully meet punching press while cost is reduced Performance requirement in production, the economic results in society brought therefrom are considerable.

Brief description of the drawings:

Fig. 1 is optical microstructure's figure that 6022 aluminum alloy plate materials are made in the embodiment of the present invention 1;

Fig. 2 is optical microstructure's figure that 6022 aluminum alloy plate materials are made in comparative example 1 of the present invention.

Embodiment:

With reference to embodiment, the present invention is described in further detail.

Embodiment 1

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 200mm, contained Composition and its mass percent be:Si:1.08%, Mg:0.57%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 472 DEG C are heated in wind furnace is circulated, insulation 11h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 4 along rectangle ingot width It is secondary, 17 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 5mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 430 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.0mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 540 DEG C, Soaking time is 12min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:15min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 175 DEG C, The Pre-aging treatment time is 15min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Comparative example 1

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 200mm, contained Composition and its mass percent be:Si:1.08%, Mg:0.57%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) 6022 aluminium alloy cast ingots are fitted into circulation wind furnace, after 2.5 hours are warming up to 545 DEG C of insulation 24h with stove, gone out Stove is air-cooled to room temperature;

(3) heat:After the 6022 aluminium alloy cast ingot crop milling faces processing after cooling, 455 DEG C are heated to, is incubated 4h;

(4) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 4 along rectangle ingot width It is secondary, 17 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 5mm;

(5) intermediate annealing:After hot rolled plate is cut into scale, 430 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(6) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.0mm;

(7) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 540 DEG C, Soaking time is 12min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(8) room temperature is placed:15min is placed to rolling plate room temperature after solution treatment;

(9) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 175 DEG C, The Pre-aging treatment time is 15min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(10) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, is made 6022 Aluminum alloy plate materials.

6022 aluminum alloy plate materials made from this comparative example are stretched and AEG-process, and to made from this comparative example 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 2

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 120mm, contained Composition and its mass percent be:Si:0.80%, Mg:0.70%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 410 DEG C are heated in wind furnace is circulated, insulation 10h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 3 along rectangle ingot width It is secondary, 12 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 5mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 430 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.0mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 540 DEG C, Soaking time is 11min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:20min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 180 DEG C, The Pre-aging treatment time is 5min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 3

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 100mm, contained Composition and its mass percent be:Si:0.81%, Mg:0.70%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 423 DEG C are heated in wind furnace is circulated, insulation 8h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 3 along rectangle ingot width It is secondary, 12 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 3mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 440 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.8mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 550 DEG C, Soaking time is 10min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:8min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 160 DEG C, The Pre-aging treatment time is 10min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 4

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 140mm, contained Composition and its mass percent be:Si:0.81%, Mg:0.70%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 431 DEG C are heated in wind furnace is circulated, insulation 8h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 4 along rectangle ingot width It is secondary, 13 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 4mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 420 DEG C are heated in wind furnace is circulated, after being incubated 2h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.9mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 535 DEG C, Soaking time is 15min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:10min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 140 DEG C, The Pre-aging treatment time is 18min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 5

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 150mm, contained Composition and its mass percent be:Si:0.81%, Mg:0.70%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 445 DEG C are heated in wind furnace is circulated, insulation 7h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 5 along rectangle ingot width It is secondary, 12 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 6mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 420 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.2mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 545 DEG C, Soaking time is 12min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:5min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 170 DEG C, The Pre-aging treatment time is 12min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 6

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 170mm, contained Composition and its mass percent be:Si:0.81%, Mg:0.70%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 453 DEG C are heated in wind furnace is circulated, insulation 6h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 4 along rectangle ingot width It is secondary, 15 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 3mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 430 DEG C are heated in wind furnace is circulated, after being incubated 2h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.1mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 550 DEG C, Soaking time is 12min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:25min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 190 DEG C, The Pre-aging treatment time is 6min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 7

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 190mm, contained Composition and its mass percent be:Si:1.09%, Mg:0.62%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 460 DEG C are heated in wind furnace is circulated, insulation 6h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 3 along rectangle ingot width It is secondary, roll direction then along rectangle ingot length and roll 16 passages, hot rolled plate is made, hot rolling plate thickness is 4mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 440 DEG C are heated in wind furnace is circulated, after being incubated 2h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.8mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 535 DEG C, Soaking time is 13min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:30min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 185 DEG C, The Pre-aging treatment time is 8min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 8

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 180mm, contained Composition and its mass percent be:Si:1.09%, Mg:0.62%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 480 DEG C are heated in wind furnace is circulated, insulation 4h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 3 along rectangle ingot width It is secondary, 16 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 6mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 435 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.2mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 545 DEG C, Soaking time is 11min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:12min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 165 DEG C, The Pre-aging treatment time is 20min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 9

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 160mm, contained Composition and its mass percent be:Si:1.09%, Mg:0.62%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 400 DEG C are heated in wind furnace is circulated, insulation 12h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 5 along rectangle ingot width It is secondary, 12 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 4mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 425 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.1mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 550 DEG C, Soaking time is 14min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:22min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 150 DEG C, The Pre-aging treatment time is 15min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 10

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 90mm, contained Composition and its mass percent be:Si:1.09%, Mg:0.62%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 425 DEG C are heated in wind furnace is circulated, insulation 11h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 4 along rectangle ingot width It is secondary, 9 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 5mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 420 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.9mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 535 DEG C, Soaking time is 14min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:18min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 145 DEG C, The Pre-aging treatment time is 16min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 11

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 80mm, contained Composition and its mass percent be:Si:1.18%, Mg:0.45%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 440 DEG C are heated in wind furnace is circulated, insulation 9h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 3 along rectangle ingot width It is secondary, 10 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 6mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 420 DEG C are heated in wind furnace is circulated, after being incubated 2h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.8mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 540 DEG C, Soaking time is 10min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:15min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 155 DEG C, The Pre-aging treatment time is 20min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 12

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 110mm, contained Composition and its mass percent be:Si:1.18%, Mg:0.47%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 466 DEG C are heated in wind furnace is circulated, insulation 5h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 5 along rectangle ingot width It is secondary, 10 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 3mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 430 DEG C are heated in wind furnace is circulated, after being incubated 1.5h, stove is cold To room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.8mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 550 DEG C, Soaking time is 11min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:5min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 155 DEG C, The Pre-aging treatment time is 20min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 13

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 100mm, contained Composition and its mass percent be:Si:1.18%, Mg:0.47%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 470 DEG C are heated in wind furnace is circulated, insulation 6h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 4 along rectangle ingot width It is secondary, 11 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 3mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 440 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.8mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 550 DEG C, Soaking time is 11min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:30min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 155 DEG C, The Pre-aging treatment time is 20min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 14

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 120mm, contained Composition and its mass percent be:Si:1.18%, Mg:0.47%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 477 DEG C are heated in wind furnace is circulated, insulation 4h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 5 along rectangle ingot width It is secondary, 10 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 5mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 440 DEG C are heated in wind furnace is circulated, after being incubated 2h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.1mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 535 DEG C, Soaking time is 14min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:5min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 155 DEG C, The Pre-aging treatment time is 20min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 15

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 150mm, contained Composition and its mass percent be:Si:1.18%, Mg:0.47%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 420 DEG C are heated in wind furnace is circulated, insulation 8h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 3 along rectangle ingot width It is secondary, 14 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 4mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 430 DEG C are heated in wind furnace is circulated, after being incubated 2h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.2mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 540 DEG C, Soaking time is 15min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:20min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 190 DEG C, The Pre-aging treatment time is 5min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 16

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 180mm, contained Composition and its mass percent be:Si:1.50%, Mg:0.46%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 435 DEG C are heated in wind furnace is circulated, insulation 6h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 4 along rectangle ingot width It is secondary, 15 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 6mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 420 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.9mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 550 DEG C, Soaking time is 13min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:20min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 170 DEG C, The Pre-aging treatment time is 14min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 17

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 180mm, contained Composition and its mass percent be:Si:1.49%, Mg:0.46%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 450 DEG C are heated in wind furnace is circulated, insulation 10h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 5 along rectangle ingot width It is secondary, 14 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 3mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 425 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.0mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 540 DEG C, Soaking time is 12min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:25min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 140 DEG C, The Pre-aging treatment time is 20min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 18

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 120mm, contained Composition and its mass percent be:Si:1.49%, Mg:0.46%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 480 DEG C are heated in wind furnace is circulated, insulation 6h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 3 along rectangle ingot width It is secondary, 12 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 4mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 435 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.8mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 535 DEG C, Soaking time is 15min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:12min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 165 DEG C, The Pre-aging treatment time is 10min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 19

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 80mm, contained Composition and its mass percent be:Si:1.49%, Mg:0.46%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 402 DEG C are heated in wind furnace is circulated, insulation 11h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 4 along rectangle ingot width It is secondary, 9 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 5mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 425 DEG C are heated in wind furnace is circulated, after being incubated 2h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 1.2mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 545 DEG C, Soaking time is 10min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:25min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 175 DEG C, The Pre-aging treatment time is 12min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 20

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 160mm, contained Composition and its mass percent be:Si:1.49%, Mg:0.46%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 418 DEG C are heated in wind furnace is circulated, insulation 10h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 3 along rectangle ingot width It is secondary, 14 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 6mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 420 DEG C are heated in wind furnace is circulated, after being incubated 2h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.9mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 540 DEG C, Soaking time is 14min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:10min is put to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 185 DEG C, The Pre-aging treatment time is 10min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 21

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 100mm, contained Composition and its mass percent be:Si:1.45%, Mg:0.68%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 433 DEG C are heated in wind furnace is circulated, insulation 8h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 5 along rectangle ingot width It is secondary, 10 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 6mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 420 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.9mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 550 DEG C, Soaking time is 10min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:15min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 145 DEG C, The Pre-aging treatment time is 15min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

Embodiment 22

A kind of preparation method of 6022 aluminum alloy plate materials, comprises the following steps:

(1) prepared by ingot casting:6022 aluminium alloy cast ingots are prepared using direct water-cooling semi-continuous casting, thickness 200mm, contained Composition and its mass percent be:Si:1.45%, Mg:0.68%, Cu≤0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤0.15%, surplus Al;

(2) heat:After 6022 aluminium alloy cast ingot crop milling faces are handled, 455 DEG C are heated in wind furnace is circulated, insulation 4h;

(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, first rolls 4 along rectangle ingot width It is secondary, 17 passages are rolled then along rectangle ingot length direction, roll to obtain hot rolled plate, hot rolling plate thickness is 3mm;

(4) intermediate annealing:After hot rolled plate is cut into scale, 430 DEG C are heated in wind furnace is circulated, after being incubated 1h, is furnace-cooled to Room temperature, obtain annealed state and roll plate;

(5) cold rolling:Annealed state is rolled into plate, carries out 4 passage cold rollings, cold-reduced sheet is made;Wherein, Cold Rolled Plate Thickness 0.8mm;

(6) solution treatment:Solution treatment is carried out in salt bath furnace to cold-reduced sheet, the heating-up temperature of solution treatment is 540 DEG C, Soaking time is 15min, and the type of cooling is water quenching to room temperature, rolls plate after forming solution treatment;

(7) room temperature is placed:20min is placed to rolling plate room temperature after solution treatment;

(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, pre-ageing treatment temperature is 160 DEG C, The Pre-aging treatment time is 20min, and the type of cooling forms after Pre-aging treatment to be air-cooled to room temperature and rolls plate;

(9) room temperature is placed:By the plate that rolls after Pre-aging treatment, room temperature places more than 4 weeks, as T4P states, and 6022 aluminium are made Sheet alloy.

6022 aluminum alloy plate materials made from the present embodiment are stretched and AEG-process, and to made from the present embodiment 6022 aluminum alloy plate materials are after 2% predeformation, then 170 DEG C × 30min of progress simulation baking vanish heats in drying baker, with After determine its intensity;Related performance indicators data are shown in Table 1.

After 6022 aluminum alloy plate materials supply of material state performance index and paint baking prepared by embodiment 1~22 and comparative example 1 Performance indications be shown in Table 1:

The embodiment of table 1 prepares the performance after 6022 aluminum alloy plate materials supply of material state performance index and paint baking with comparative example Index

From table 1, be respectively provided with the 6022 aluminum alloy plate materials supply of material states prepared through the inventive method it is good into Shape performance, it shows obvious baking hardenability after simulating baking vanish, and 6022 aluminium conventionally produced with comparative example 1 close Performance indications after golden plate material punching performance index and baking vanish are roughly the same or even slightly improve, and this fully embodies this hair Bright value.

Claims (5)

1. a kind of preparation method of 6022 aluminum alloy plate materials, it is characterised in that comprise the following steps:
(1) prepared by ingot casting:Prepare 6022 aluminium alloy cast ingots;
(2) heat:By 6022 aluminium alloy cast ingots, 400~480 DEG C are heated to, is incubated 4~12h;
(3) hot rolling:To 6022 aluminium alloy cast ingots after insulation, hot rolling is carried out, hot rolled plate is made;Wherein, hot rolling plate thickness be 3~ 6mm;
(4) intermediate annealing:Hot rolled plate is heated to 420~440 DEG C, after being incubated 1~2h, room temperature is furnace-cooled to, is rolled after acquisition stove is cold Plate;
(5) cold rolling:By stove it is cold after roll plate, carry out cold rolling, cold-reduced sheet be made;Wherein, Cold Rolled Plate Thickness is 0.8~1.2mm;
(6) solution treatment:Solution treatment is carried out to cold-reduced sheet, rolls plate after forming solution treatment;Wherein, the heating temperature of solution treatment Spend for 535~550 DEG C, soaking time is 10~15min, and the type of cooling is water quenching to room temperature;
(7) room temperature is placed:5~30min is placed to rolling plate room temperature after solution treatment;
(8) Pre-aging treatment:Plate is rolled after being placed to room temperature, carries out Pre-aging treatment, rolls plate after forming Pre-aging treatment;Wherein, Pre-ageing treatment temperature is 140~190 DEG C, and the Pre-aging treatment time is 5~20min, and the type of cooling is to be air-cooled to room temperature;
(9) room temperature is placed:To rolling plate after Pre-aging treatment, carry out room temperature and place more than 4 weeks, as T4P states, 6022 aluminium are made and close Golden plate material.
2. the preparation method of 6022 aluminum alloy plate materials according to claim 1, it is characterised in that in described step (1), The composition and its mass percent that 6022 aluminium alloy cast ingots contain be:Si:0.80~1.50%, Mg:0.45~0.70%, Cu≤ 0.11%, Mn≤0.10%, Fe≤0.20%, Zn≤0.25%, Cr≤0.10%, Ti≤0.15%, impurity element≤ 0.15%, surplus Al.
3. the preparation method of 6022 aluminum alloy plate materials according to claim 1, it is characterised in that in described step (1), 6022 aluminium alloy cast ingots are made using direct water-cooling semi-continuous casting.
4. the preparation method of 6022 aluminum alloy plate materials according to claim 1, it is characterised in that in described step (2), Before the heating of 6022 aluminium alloy cast ingots, handled by crop milling face.
5. the preparation method of 6022 aluminum alloy plate materials according to claim 1, it is characterised in that in described step (3), Hot rolling mode is that cross rolling is combined with longitudinally rolling.
CN201611006519.6A 2016-11-16 2016-11-16 A kind of preparation method of 6022 aluminum alloy plate materials CN106756285B (en)

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CN105177327A (en) * 2015-09-11 2015-12-23 广西南南铝加工有限公司 Preparation method for high-magnesium aluminum alloy O-state plate of 5XXX series
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