CN103695817A - Heat-treatable aluminum alloy synchronous-quenching thermal-forming process - Google Patents
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Abstract
The invention discloses a heat-treatable aluminum alloy synchronous-quenching thermal-forming process, which comprises the steps of preparation of a heat-treatable aluminum alloy blank (non-additive heat-treated blank), heating and heat-preservation, synchronous quenching forming, shape cutting and aging treatment. The synchronous-quenching thermal-forming process is applied to the production of a heat-treatable aluminum alloy product, and proper aging treatment is matched after forming, so that the product is accurately formed on the basis of ensuring the performance of the aluminum alloy product, the production period is shortened, the energy consumption and the production cost are lowered, and the process has broad application prospect.
Description
Technical field
The invention belongs to the stamping and thermal treatment process of aluminium alloy, particularly relate to a kind of heat forming technology that can heat-treatable aluminum alloy synchronously quenches.
Background technology
Aluminium alloy has plurality of advantages, as little in density, and the density of aluminium only has 1/3 of steel; There is high specific tenacity and specific rigidity; There are good elasticity and good shock resistance etc., very extensive in aerospace field application.On rocket and spacecraft, aluminium alloy is mainly used in pillar fuel container, ignition dope case etc.; Aboard, aluminium alloy is mainly used in structured material, as covering, wallboard and undercarriage leg etc.At present, on civilian aircraft, on 70%～80% material, military aircraft, 40%～60% material is all aluminium alloy.Aluminium alloy is also transport solution transport trade, comprise the transportation of high-speed railway, sub. and automobile visitor, goods carrier vehicle etc. the breach of lightweight problem.It is exactly loss of weight that aluminium alloy is applied to the most important advantage of transportation, and then reaches the object of energy-saving and emission-reduction.Especially in automotive industry, it is more obvious that this advantage embodies.Automotive industry is the mainstay industry of Chinese national economy, and aluminium alloy is to promote one of most important material of automotive light weight technology.Pertinent data shows, the loss of weight of aluminium and emission effect are 1:2.25:20, i.e. the every use of automobile 1Kg aluminium can reduce deadweight 2.25Kg, in whole useful life period, also can reduce exhaust gas emission 20Kg at automobile simultaneously.Aluminium alloy replaces ferrous materials manufacture automobile can make complete vehicle quality alleviate 30%～40%.
Aluminium alloy has plurality of advantages, it has obtained application so widely at aerospace field and transportation, but it compares room temperature plasticity with steel poor, the room temperature plasticity of aluminum alloy plate materials only has 2/3rds of deep drawing sheet steel, unit elongation also only has 10% left and right, be significantly less than the unit elongation of deep drawing sheet steel 50%, and its Young's modulus only have 1/2nd left and right of steel plate, therefore resilience is serious after causing part forming.Make its Accurate Shaping go out product, will improve its forming property.And current conventional aluminium alloy temperature, thermo shaping method, although can improve the forming property of aluminium alloy in forming process, also exists such as: the crystal grain final mechanical property that affects part of easily growing up, the problem of the aspect such as energy consumption is high, production efficiency is low.
Aluminium alloy can be divided into wrought aluminium alloy and cast aluminium alloy, in the aluminium alloy application of all trades and professions, take deformable aluminium alloy as main, and the classification of wrought aluminium alloy as shown in Figure 2.For the stamping part of heat-treatable strengthened aluminum alloy, need to after stamping completing, carry out solution treatment and ageing treatment, could meet its use properties requirement.In solution treatment process, the stamping part of thin-walled easily produces the buckling deformation causing because expanding with heat and contract with cold, thereby affects final size and the form accuracy of part, and the part of some complicated shapes even there will be cracking phenomena.
Therefore, seek a kind ofly not only improved plasticity but also reduced costs and can keep high-intensity aluminum alloy part manufacturing process the widespread use in production is vital to aluminium alloy.
Summary of the invention
The object of the present invention is to provide a kind of heat forming technology that can heat-treatable aluminum alloy synchronously quenches, this technique keep can the basis of heat-treatable aluminum alloy punching parts use properties on, carry out simultaneously can heat-treatable aluminum alloy stamping and solution treatment, with improve can heat-treatable aluminum alloy stamping performance and the forming accuracy of its punching parts, reduce part buckling deformation in the quenching process of solution treatment, reduce manufacturing cost.
The present invention adopts following technique means to realize:
The heat forming technology that can heat-treatable aluminum alloy synchronously quenches, adopts following steps to carry out:
(1) preparation can heat-treatable aluminum alloy blank: utilize the technique of stamping-out, line cutting or laser cutting can heat-treatable aluminum alloy to be processed into the forming workblank of desired shape;
(2) heating and thermal insulation: can be heated to solid solution temperature and be incubated 10-60 minute by heat-treatable aluminum alloy blank, at the initial stage of heating, insulation, the second-phase atom of aluminium alloy dissolves in aluminum substrate and forms supersaturated solid solution, obtains Single Phase Metal tissue; In the insulation later stage, the alloying element in aluminium alloy carries out diffusion motion, is evenly distributed on aluminum substrate, forms uniform high temperature supersaturated solid solution;
In process furnace, can be heated to solid solution temperature by heat-treatable aluminum alloy forming workblank, and be incubated for some time, obtain single-phase supersaturated solid solution.In the initial stage of heat-processed and insulation, under virgin state can heat-treatable aluminum alloy in second-phase atom will dissolve in aluminum substrate and form supersaturated solid solution, obtain Single Phase Metal tissue; And the alloying element in later stage aluminium alloy carries out diffusion motion in insulation, be evenly distributed on aluminum substrate, the uniform high temperature supersaturated solid solution of forming component, is that follow-up solution treatment obtains under room temperature state the uniform supersaturated solid solution of composition and makes tissue and prepare.Meanwhile, under the condition of high temperature, can improve can heat-treatable aluminum alloy plasticity, reduce resistance to deformation, be the stamping preparation of making mechanical property aspect in later stage.
(3) synchronously quenching formed: will after heating, can heat-treatable aluminum alloy blank to move into the synchronous quenching formed mould with cooling water channel, carry out stamping and pressurize;
In this process, after heating, can under the effect of mould, there is viscous deformation by heat-treatable aluminum alloy blank, obtain the part shape needing.Because blank carries out viscous deformation under the condition of high temperature, plasticity that can heat-treatable aluminum alloy is good, little being easy to of resistance to deformation is shaped; In addition, the work hardening effect in deformation process and dynamic recovery, dynamic recrystallization ramollescence exist simultaneously, there will not be obvious work hardening phenomenon.In stamping and pressure maintaining period, utilize the thermal conduction between blank and mould, realization to can heat-treatable aluminum alloy blank cooling fast, the alloy atom locking of matrix will be dissolved in, obtain the uniform supersaturated solid solution of composition under room temperature state, for follow-up ageing treatment obtains the disperse tiny strengthening phase that distributes, make tissue and prepare.
(4) profile cutting: the aluminium alloy after step (3) is processed, by carrying out trimming correction, obtains the part of final desired shape;
(5) ageing treatment: utilize natural aging or artificially aged mode, the alloy atom in the supersaturated solid solution under room temperature state after solution treatment is separated out, form and be evenly distributed on the tiny strengthening phase on matrix.
Object that can heat-treatable aluminum alloy timeliness is for the alloy atom in the supersaturated solid solution under room temperature state after solution treatment is separated out, formation is evenly distributed on the tiny strengthening phase on matrix, improve the strength and stiffness of aluminium alloy, with meet can heat-treatable aluminum alloy part service requirements.Ageing treatment can be divided into: artificial aging and natural aging.Natural aging refers to: the alloy atom in can heat-treatable aluminum alloy is separated out formation strengthening phase under field conditions (factors).Artificial aging refers to: the alloy atom in can heat-treatable aluminum alloy is separated out formation strengthening phase under the condition of heating.
The described heat forming technology that can heat-treatable aluminum alloy synchronously quenches, the aluminium alloy described in step (1) is 2XXX system, 6XXX system or 7XXX system.
The described heat forming technology that can heat-treatable aluminum alloy synchronously quenches, the treatment temp described in step (2) is 420-540 ℃.
The described heat forming technology that can heat-treatable aluminum alloy synchronously quenches, the synchronous quenching formed mould time of the immigration described in step (3) is 5-20 second.
The described heat forming technology that can heat-treatable aluminum alloy synchronously quenches, the stamping drawing velocity described in step (3) is greater than 100mm/s.
The described heat forming technology that can heat-treatable aluminum alloy synchronously quenches, the time of the pressurize that step (3) is described is 30-120 second.
The described heat forming technology that can heat-treatable aluminum alloy synchronously quenches, stamping-out, laser cutting or mach method are used in the described profile cutting of step (4).
Synchronous quenching heat forming technology is that a kind of simultaneously carrying out can heat-treatable aluminum alloy solution treatment and stamping novel process, in synchronous quenching thermoforming process, first can be heated to solid solution temperature and be incubated for some time by heat-treatable aluminum alloy plate, making second-phase wherein dissolve in matrix and obtain the uniform high temperature microstructure of composition; Then plate is sent in the synchronous quenching hot-forming die with refrigerating unit and carried out stamping and pressurize for some time, utilize thermal conduction between plate and die surface to carry out plate cooling fast, alloy atom is evenly locked in matrix; After this again the product being shaped is taken out and carry out follow-up deburring processing.After the thermoforming of can heat-treatable aluminum alloy synchronously quenching completes, then coordinate corresponding ageing treatment process, just can obtain meeting the finished product that use properties requires.
From can the making of heat-treatable aluminum alloy blank, can heat-treatable aluminum alloy blank be heated to solid solution temperature and be incubated for some time and make its internal component, microstructure homogenization; Then in synchronous quenching hot-forming die, blank is carried out to stamping and solution treatment simultaneously; And after recontour, obtain part net shape and size; Finally carry out ageing treatment.
Synchronous quenching heat forming technology be utilize under solid solution temperature can heat-treatable aluminum alloy plate blank, plasticity and ductility increase and feature that yield strength declines, utilize synchronous quenching formed mould to carry out stamping to it; Utilize thermal conduction between plate blank and mould to carry out plate cooling fast simultaneously, thereby realize can carry out stamping and object solution treatment by heat-treatable aluminum alloy plate blank simultaneously.
Provided by the invention can heat-treatable aluminum alloy solution treatment, be that 2XXX system, 6XXX system, 7XXX line aluminium alloy are heated to more than 420 ℃, be then quickly cooled to room temperature.And aluminium alloy is when more than 200 ℃, its forming property improves a lot during with respect to room temperature, but shaping drag reduces.Therefore, the aluminum alloy part precision being shaped out under heated condition is high, and required stamping press is little.So can utilize can the higher feature of heat-treatable aluminum alloy temperature when solution treatment starts, in can the process of heat-treatable aluminum alloy plate solution treatment, carry out stamping simultaneously.
In synchronous quenching thermoforming process, carry out solution treatment that can heat-treatable aluminum alloy and stamping simultaneously, with traditional can heat-treatable aluminum alloy sheet forming part first cold stamping be shaped after solid solution treatment process compare advantage and be:
(1) synchronously quench heat forming technology under the condition of high temperature, carry out can heat-treatable aluminum alloy plate shaping, aluminium alloy forming property is compared under room temperature condition obvious lifting, deflection is large, plastic force is little, forming accuracy is high;
(2) heat forming technology that synchronously quenches forms and solution treatment two procedures simultaneously, do not increase extra operation, can not increase manufacturing cost, and Al-alloy products contacts with mould all the time in the quenching process of solution treatment, can not cause because expanding with heat and contract with cold buckling deformation;
(3) as-heat-treated condition due to blank can be to exerting an influence by heat-treatable aluminum alloy sheet metal formability, so traditional can often adopt annealed state (O state) blank in heat-treatable aluminum alloy plate cold stamping forming process, what this just made non-annealed state (O state) can heat-treatable aluminum alloy blank must carry out annealing operation before cold stamping is shaped, and the heat forming technology that synchronously quenches directly heats blank solid solution temperature, the as-heat-treated condition of blank can not exert an influence to synchronous quenching formed process, can with the blank that directly utilizes rolling state carry out can heat-treatable aluminum alloy punching parts production, so synchronously quench, heat forming technology is relatively traditional can heat-treatable aluminum alloy sheet forming part first cold stamping be shaped after solid solution treatment process, there is energy consumption low, the feature that cost is low.
(4) can synchronously quench in thermoforming process by heat-treatable aluminum alloy plate, only need to once heat alloy plate material, without mould is heated, therefore heat-up time is short; And traditional can heat-treatable aluminum alloy plate warm forming+solid solution treatment process, need to carry out warm forming and twice heating of solution treatment to plate, and can in warm forming process, need mould to heat by heat-treatable aluminum alloy plate.So, with traditional can comparing by heat-treatable aluminum alloy plate warm forming+solid solution treatment process, synchronously quenching that heat forming technology energy consumption is low, production efficiency is high, easy and simple to handle, the material mechanical performance that can not occur to cause because of grain growth declines.
Visible, by the heat forming technology that synchronously quenches be applied to can heat-treatable aluminum alloy product production, and be equipped with suitable ageing treatment after being shaped, can guarantee on the basis of alloy product performance, shorten the production cycle, improve product forming accuracy, reduce production costs, be with a wide range of applications.
Accompanying drawing explanation
Fig. 1 is the heat forming technology schema that can heat-treatable aluminum alloy synchronously quenches.
Fig. 2 is the classification chart of wrought aluminium alloy.
Fig. 3 is synchronous quenching hot-forming die schematic diagram, and wherein 1 is mold, and 2 is cooling water channel.
embodiment:
Synchronous quenching hot-forming die used in following examples is shown in Fig. 3, comprises mold 1 and cooling water channel 2.
Embodiment 1:
The synchronous quenching bending forming of H18 state 7075 alloy plate materials that the southwestern aluminium producing thickness of take is 0.8mm is example, and its main component is as shown in table 1.Regulation according to GB16865-1997 < < distortion aluminium, magnesium and the tension test of alloy fabricated product thereof with Fig. 2 and table 3 in sample > >, from blank, intercept sample, according to GB 228.1-2010 < < tensile test of metallic materials first part: room temperature experimental technique > >, records H18 state 7075 aluminium alloy blank mechanical properties as shown in table 2.
Table 1 test H18 state 7075 al alloy components used
| Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Al |
| 0.38 | 0.3 | 1.6 | 0.25 | 2.4 | 0.26 | 5.7 | 0.16 | All the other |
Table 2 test H18 state 7075 Mechanical Properties of Aluminum Alloys used
| Alloy/state | Non-proportional extension intensity (Rp0.2/MPa) | Tensile strength (Rm/ MPa) | Elongation after fracture (A%) |
| 7075/H18 | 340.86 | 383.33 | 6.05 |
(1) forming workblank is made: utilize punching process by the wide 80mm pliability test of 7075 aluminium alloy processing growth 184mm blank.In specific implementation process, can also select according to condition other modes such as line cutting or laser cutting.
(2) be heated to solid solution temperature insulation: blank obtains single-phase supersaturated solid solution after being heated to 465 ℃ (intermediate values of 460～470 ℃) and being incubated 10min.
(3) thermoforming of synchronously quenching: 7075 aluminium alloy blanks after heating are moved into synchronous quenching hot-forming die in 10s, speed with 100mm/s is carried out stamping, pressurize 1min after punching press completes, then open mould and take out product, obtaining room temperature undertissue is single-phase supersaturated solid solution, is shaped as the work in-process of required External Shape.
(4) profile cutting: utilize punching process to carry out trimming to the 3rd step gained part, obtain the part of final desired shape.
(5) artificial aging thermal treatment: the part that step (4) is produced is heated to 120 ℃, insulation 24h, then air cooling is to room temperature, and final production goes out 7075 aluminium alloy crooked parts.
According to GB16865-1997 < < distortion aluminium, the regulation of Fig. 2 and table 3 in sample > > for magnesium and the tension test of alloy fabricated product thereof, from part, intercept sample, according to GB 228.1-2010 < < tensile test of metallic materials first part: room temperature experimental technique > >, record the mechanical property of synchronous quenching formed rear 7075 aluminum alloy parts, and with aluminium and aluminium alloy plate for GB3880.2-2012 < < general industry, band part 2: mechanical property > > compares, as shown in table 3.
7075 aluminium alloy capabilities after the synchronous quenching thermoforming of table 3
| Alloy/state | Non-proportional extension intensity (Rp0.2/MPa) | Tensile strength (Rm/ MPa) | Elongation after fracture (A%) |
| Synchronous quenching thermoforming+artificial aging | 553.98 | 635.08 | 14.24 |
| Tradition " cold stamping shaping+solution treatment+artificial aging " | 548.35 | 642.24 | 14.16 |
| 7075/T6 standard regulation (being not less than) | 460 | 525 | 7 |
As can be seen from Table 3, entered 7075 alloy plate materials that said process is controlled, experience after synchronous quenching thermoforming and artificial aging processing, the tensile strength of material, Non-proportional extension intensity and elongation after fracture, all met and exceeded the standard gauge definite value of T6 state, and with same process Parameter Conditions under the mechanical property of 7075 parts that obtain under " cold stamping shaping+solution treatment+artificial aging " technique of tradition roughly suitable.
In bending forming process, different blank states springback capacity after 60 ° of angle place's bendings on mould is as shown in table 4:
Table 4 7075 aluminium alloy bending forming parts are at the springback angle at place, 60 ° of angles
| Alloy/state | Springback angle (°) |
| The 7075/H18 thermoforming of synchronously quenching | 0.03 |
| 7075/O | 1.37 |
| 7075/W (in traditional solution treatment 1 hour) | 2.66 |
| 7075/H18 | 10.34 |
By table 4, with respect to traditional " cold stamping shaping+solution treatment " technique, under the heat forming technology condition of synchronously quenching, can significantly be reduced by the bending springback of heat-treatable aluminum alloy 7075 when being shaped.And in synchronous quenching thermoforming process, owing to being the quick process of cooling of carrying out solution treatment in mould, 7075 alloy plate materials can not produce buckling deformation.So the part shape that the heat forming technology that synchronously quenches obtains and dimensional precision are obviously better than the part that traditional " cold stamping shaping+solution treatment " technique produces.O state and H18 state crooked part, in the quenching process of solution treatment, because violent expanding with heat and contract with cold causes internal stress, have produced larger viscous deformation, and under these two kinds of test conditionss, larger warpage has occurred in the free shape region of part.And W state crooked part, although can eliminate the buckling deformation that part blank produces in solution treatment process in BENDING PROCESS, resilience causes the free shape region on part both sides to still have part buckling deformation to keep down.Relative other test conditionss, in synchronous quenching thermoforming process, be shaped and carry out with quenching process simultaneously, under the effect of mould, can not produce the buckling deformation causing owing to expanding with heat and contract with cold, so the External Shape that the bending forming technique of synchronously quenching is made is smooth and there is no a warpage.
Embodiment 2:
The synchronous quenching bending forming of H18 state 2024 alloy plate materials that the southwestern aluminium producing thickness of take is 1mm is example, and its main component is as shown in table 5.Regulation according to GB16865-1997 < < distortion aluminium, magnesium and the tension test of alloy fabricated product thereof with Fig. 2 and table 3 in sample > >, from blank, intercept sample, according to GB 228.1-2010 < < tensile test of metallic materials first part: room temperature experimental technique > >, records H18 state 2024 aluminium alloy blank mechanical properties as shown in table 6.
Table 5 test H18 state 2024 al alloy components used
| Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Al |
| 0.4 | 0.3 | 4.1 | 0.67 | 1.52 | 0.03 | 0.18 | 0.06 | All the other |
Table 6 test H18 state 2024 Mechanical Properties of Aluminum Alloys used
| Alloy/state | Non-proportional extension intensity (Rp0.2/MPa) | Tensile strength (Rm/ MPa) | Elongation after fracture (A%) |
| 2024/H18 | 290.69 | 312.10 | 4.75 |
(1) forming workblank is made: utilize punching process by the wide 80mm pliability test of H18 state 2024 aluminium alloy processing growth 184mm blank.
(2) be heated to solid solution temperature insulation: blank obtains single-phase supersaturated solid solution after being heated to 495 ℃ (intermediate values of 490～500 ℃) and being incubated 10min.
(3) thermoforming of synchronously quenching: 2024 aluminium alloy blanks after heating are moved into synchronous quenching formed mould in 10s, speed with 100mm/s is carried out stamping, pressurize 1min after punching press completes, then open mould and take out product, obtaining room temperature undertissue is single-phase supersaturated solid solution, is shaped as the work in-process of required External Shape.
(4) profile cutting: utilize punching process to carry out trimming to the 3rd step gained part, obtain the part of final desired shape.
(5) natural aging thermal treatment: the part that step (4) is produced is at room temperature placed 96h, and final production goes out 7075 aluminium alloy crooked parts.
According to GB16865-1997 < < distortion aluminium, the regulation of Fig. 2 and table 3 in sample > > for magnesium and the tension test of alloy fabricated product thereof, from part, intercept sample, according to GB 228.1-2010 < < tensile test of metallic materials first part: room temperature experimental technique > >, record the mechanical property of synchronous quenching formed rear 2024 aluminum alloy parts, and with aluminium and aluminium alloy plate for GB3880.2-2012 < < general industry, band part 2: mechanical property > > compares, as shown in table 7.
2024 aluminium alloy capabilities after table 7 is synchronous quenching formed
| Alloy/state | Non-proportional extension intensity (Rp0.2/MPa) | Tensile strength (Rm/ MPa) | Elongation after fracture (A%) |
| The H18 state 2024 aluminium alloy blanks thermoforming+artificial aging of synchronously quenching | 311.47 | 470.43 | 19.30 |
| O state 2024 aluminium alloy blank tradition " cold stamping shaping+solution treatment+natural aging " | 284.16 | 459.77 | 21.89 |
| 2024/T4 standard regulation (being not less than) | 275 | 425 | 15 |
As can be seen from Table 7, entered the 2024 aluminium alloy blanks that said process is controlled, experience after synchronous quenching thermoforming and natural aging treatment, the tensile strength of material, Non-proportional extension intensity and elongation after fracture, all met and exceeded the standard gauge definite value of T4 state, and intensity is a little more than the mechanical property of 2024 parts that obtain under tradition " cold stamping shaping+solution treatment+natural aging " technique under same process Parameter Conditions.
H18 state 2024 aluminium alloy blanks in traditional cold bending forming process on mould bending radius 5mm position there is fracture, illustrate that the minimum bending radius of H18 state 2024 aluminium alloys is greater than 5mm.And there will not be fracture under synchronous quenching heat forming technology, and minimum bending radius is less than 5mm, and visible synchronous quenching heat forming technology can improve the forming property of H18 state 2024 aluminium alloys.
In bending forming process, different 2024 aluminium alloy blank states springback capacity after 60 ° of angle place's bendings on mould is as shown in table 8:
Table 8 2024 aluminium alloy bending forming parts are at the springback angle at place, 60 ° of angles
| Alloy/state | Springback angle (°) |
| 2024/H18 is synchronously quenching formed | 0.237 |
| 2024/O | 0.65 |
| 2024/W (in solution treatment 1 hour) | 3.58 |
| 2024/H18 | / |
By table 8, with respect to traditional " cold stamping shaping+solution treatment " technique, under the heat forming technology condition of synchronously quenching, can significantly be reduced by the bending springback of heat-treatable aluminum alloy 2024 when being shaped.And in synchronous quenching thermoforming process, owing to being the quick process of cooling of carrying out solution treatment in mould, 2024 alloy plate materials can not produce buckling deformation.So the part shape that the heat forming technology that synchronously quenches obtains and dimensional precision are obviously better than the part that traditional " cold stamping shaping+solution treatment " technique produces.
Claims (7)
1. the heat forming technology that can heat-treatable aluminum alloy synchronously quenches, is characterized in that, adopts following steps to carry out:
(1) preparation can heat-treatable aluminum alloy blank: utilize the technique of stamping-out, line cutting or laser cutting can heat-treatable aluminum alloy to be processed into the forming workblank of desired shape;
(2) heating and thermal insulation: can be heated to solid solution temperature and be incubated 10-60 minute by heat-treatable aluminum alloy blank, at the initial stage of heating, insulation, the second-phase atom of aluminium alloy dissolves in aluminum substrate and forms supersaturated solid solution, obtains Single Phase Metal tissue; In the insulation later stage, the alloying element in aluminium alloy carries out diffusion motion, is evenly distributed on aluminum substrate, forms uniform high temperature supersaturated solid solution;
(3) synchronously quenching formed: will after heating, can heat-treatable aluminum alloy blank to move into the synchronous quenching formed mould with cooling water channel, carry out stamping and pressurize;
(4) profile cutting: the aluminium alloy after step (3) is processed, by carrying out trimming correction, obtains the part of final desired shape;
(5) ageing treatment: utilize natural aging or artificially aged mode, the alloy atom in the supersaturated solid solution under room temperature state after solution treatment is separated out, form and be evenly distributed on the tiny strengthening phase on matrix.
2. the heat forming technology that can heat-treatable aluminum alloy synchronously quenches according to claim 1, is characterized in that, the aluminium alloy described in step (1) is 2XXX system, 6XXX system or 7XXX system.
3. the heat forming technology that can heat-treatable aluminum alloy synchronously quenches according to claim 1, is characterized in that, the treatment temp described in step (2) is 420-540 ℃.
4. the heat forming technology that can heat-treatable aluminum alloy synchronously quenches according to claim 1, is characterized in that, the synchronous quenching formed mould time of the immigration described in step (3) is 5-20 second.
5. the heat forming technology that can heat-treatable aluminum alloy synchronously quenches according to claim 1, is characterized in that, the stamping drawing velocity described in step (3) is greater than 100mm/s.
6. the heat forming technology that can heat-treatable aluminum alloy synchronously quenches according to claim 1, is characterized in that, the time of the pressurize that step (3) is described is 30-120 second.
7. the heat forming technology that can heat-treatable aluminum alloy synchronously quenches according to claim 1, is characterized in that, stamping-out, laser cutting or mach method are used in the described profile cutting of step (4).
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| CN110573276A (en) * | 2017-04-14 | 2019-12-13 | 肯联铝业技术中心 | Method for manufacturing aluminum alloy parts |
| CN111206193A (en) * | 2020-01-22 | 2020-05-29 | 湖南科技大学 | Low-speed hot forming-quenching composite forming method for aluminum alloy component |
| CN111822570A (en) * | 2020-07-10 | 2020-10-27 | 首钢集团有限公司 | Heating hot stamping strengthening process |
| CN113414267A (en) * | 2021-06-17 | 2021-09-21 | 上海交通大学 | Pre-rolling shaping method for work-hardening metal plate |
| CN114318182A (en) * | 2021-12-24 | 2022-04-12 | 大连理工大学 | Hot forming method and device for large-size high-strength aluminum alloy aviation thin-wall part |
| CN115945571A (en) * | 2023-01-18 | 2023-04-11 | 上海新顿长菁科技有限公司 | Hot forming process of 6XXX series aluminum alloy, parts made by hot forming process and application of hot forming process |
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