CN103695817B - One can synchronously to be quenched heat forming technology by heat-treatable aluminum alloy - Google Patents
One can synchronously to be quenched heat forming technology by heat-treatable aluminum alloy Download PDFInfo
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Abstract
The invention discloses one can synchronously to quench heat forming technology by heat-treatable aluminum alloy, comprise preparation can heat-treatable aluminum alloy blank (non-add as-heat-treated condition blank), heating and thermal insulation, synchronously quenching formed, profile cutting, ageing treatment step; The heat forming technology that synchronously quenches is applied to by the present invention can the production of heat-treatable aluminum alloy product, and be equipped with suitable ageing treatment after such shaping, can on the basis ensureing alloy product performance, realize the Accurate Shaping of product, thus shorten the production cycle, energy efficient, reduction production cost, be with a wide range of applications.
Description
Technical field
The invention belongs to the stamping and thermal treatment process of aluminium alloy, particularly relating to one can synchronously quench heat forming technology by heat-treatable aluminum alloy.
Background technology
Aluminium alloy has plurality of advantages, and as density is little, the density of aluminium only has 1/3 of steel; There is high specific tenacity and specific rigidity; There is good elasticity and excellent 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 70% ~ 80% material, on military aircraft 40% ~ 60% material be all aluminium alloy.Aluminium alloy is also transport solution transport trade, comprise high-speed railway, subway transports 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, this Advantages found more obvious.Automotive industry is the mainstay industry of Chinese national economy, and aluminium alloy promotes 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, and namely automobile often uses 1Kg aluminium, can reduce deadweight 2.25Kg, simultaneously within automobile whole useful life period, also can reduce exhaust gas emission 20Kg.Aluminium alloy replaces ferrous materials manufacture automobile that complete vehicle quality can be made to alleviate 30% ~ 40%.
Aluminium alloy has plurality of advantages, it obtains at aerospace field and transportation and so applies widely, but its room temperature plasticity compared with steel is poor, the room temperature plasticity of aluminum alloy plate materials only has 2/3rds of deep drawing sheet steel, unit elongation also only has about 10%, be significantly less than the unit elongation of deep drawing sheet steel 50%, and its Young's modulus only has about 1/2nd of steel plate, therefore after causing part forming, resilience is serious.Make its Accurate Shaping go out product, its forming property will be improved.And conventional at present aluminium alloy temperature, thermo shaping method, although the forming property of aluminium alloy in forming process can be improved, also exist such as: crystal grain is easily grown up and finally affected the mechanical property of part, the problem of the aspects such as energy consumption is high, production efficiency is low.
Aluminium alloy can be divided into wrought aluminium alloy and cast aluminium alloy, and in the aluminium alloy application of all trades and professions, based on deformable aluminium alloy, the classification of wrought aluminium alloy as shown in Figure 2.For the stamping part of heat-treatable strengthened aluminum alloy, need to carry out solution treatment and ageing treatment after stamping completing, its use properties requirement could be met.In solution treatment process, the stamping part of thin-walled easily produces the buckling deformation caused because expanding with heat and contract with cold, thus 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 to improve plasticity but also reduce costs and the aluminum alloy part manufacturing process of high strength can be kept to be vital to the widespread use of aluminium alloy in production.
Summary of the invention
One is the object of the present invention is to provide synchronously to quench heat forming technology by heat-treatable aluminum alloy, this technique can on the basis of heat-treatable aluminum alloy punching parts use properties in maintenance, carry out can the stamping and solution treatment of heat-treatable aluminum alloy simultaneously, can the stamping formabilily of heat-treatable aluminum alloy and the forming accuracy of its punching parts to improve, reduce part buckling deformation in the quenching process of solution treatment, reduce manufacturing cost.
The present invention adopts following technique means to realize:
One can synchronously to be quenched heat forming technology by heat-treatable aluminum alloy, adopts following steps to carry out:
(1) preparation can heat-treatable aluminum alloy blank: utilize the technique of stamping-out, Linear cut or laser cutting can be processed into the forming workblank of desired shape by heat-treatable aluminum alloy;
(2) heating and thermal insulation: solid solution temperature can be heated to 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;
Solid solution temperature can be heated to by heat-treatable aluminum alloy forming workblank in process furnace, and be incubated for some time, obtain single-phase supersaturated solid solution.In the initial stage of heat-processed and insulation, can will dissolve in aluminum substrate and form supersaturated solid solution by the second-phase atom in heat-treatable aluminum alloy under virgin state, obtains Single Phase Metal tissue; And the alloying element in insulation later stage aluminium alloy carries out diffusion motion, be evenly distributed on aluminum substrate, the uniform high temperature supersaturated solid solution of forming component, make tissue for the supersaturated solid solution of uniform composition under follow-up solution treatment acquisition room temperature state and prepare.Meanwhile, can improve under the condition of high temperature can the plasticity of heat-treatable aluminum alloy, and reducing resistance to deformation, is the stamping preparation making mechanical property aspect in later stage.
(3) synchronously quenching formed: by can move into the synchronous quenching formed mould of cooling water channel by heat-treatable aluminum alloy blank after heating, carry out stamping and pressurize;
In the process, after heating, viscous deformation can be there is by heat-treatable aluminum alloy blank under the effect of mould, obtain the part shape needed.Because blank carries out viscous deformation at high operating temperatures, can good, little being easy to of resistance to deformation of the plasticity of heat-treatable aluminum alloy be 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.The thermal conduction between blank and mould is utilized in stamping and pressure maintaining period, realize can the quick cooling of heat-treatable aluminum alloy blank, the alloy atom locking of matrix will be dissolved in, obtaining the supersaturated solid solution of uniform composition under room temperature state, is that follow-up ageing treatment obtains the tiny strengthening phase of Dispersed precipitate and makes tissue and prepare.
(4) profile cutting: the aluminium alloy after step (3) being 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 after making solution treatment under room temperature state is separated out, and forms the tiny strengthening phase be evenly distributed on matrix.
Can the object of heat-treatable aluminum alloy timeliness be in order to the alloy atom in the supersaturated solid solution under room temperature state after solution treatment is separated out, form the tiny strengthening phase be evenly distributed on matrix, improve the strength and stiffness of aluminium alloy, can the service requirements of heat-treatable aluminum alloy part to meet.Ageing treatment can be divided into: artificial aging and natural aging.Natural aging refers to: can separate out formation strengthening phase under field conditions (factors) by the alloy atom in heat-treatable aluminum alloy.Artificial aging refers to: can separate out under the condition of heating and form strengthening phase by the alloy atom in heat-treatable aluminum alloy.
Described can synchronously to quench heat forming technology by heat-treatable aluminum alloy, the aluminium alloy described in step (1) is 2XXX system, 6XXX system or 7XXX system.
Described can synchronously to quench heat forming technology by heat-treatable aluminum alloy, the treatment temp described in step (2) is 420-540 DEG C.
Described can synchronously to quench heat forming technology by heat-treatable aluminum alloy, the synchronous quenching formed mould time of the immigration described in step (3) is 5-20 second.
Described can synchronously to quench heat forming technology by heat-treatable aluminum alloy, the stamping drawing velocity described in step (3) is greater than 100mm/s.
Described can synchronously to quench heat forming technology by heat-treatable aluminum alloy, the time of the pressurize described in step (3) is 30-120 second.
Described can synchronously to quench heat forming technology by heat-treatable aluminum alloy, the profile cutting described in step (4) uses stamping-out, laser cutting or mach method.
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 heat forming processes, first can be heated to solid solution temperature and be incubated for some time by heat-treatable aluminum alloy plate, second-phase is wherein dissolved in high temperature microstructure that matrix obtains uniform composition; Then plate being sent into carrying out stamping and pressurize for some time in the synchronous quenching hot-forming die of refrigerating unit, utilizing the thermal conduction between plate and die surface to cool fast plate, alloy atom is evenly locked in matrix; After this again the product be shaped is taken out and carry out follow-up deburring process.Can synchronously quench after thermoforming completes by heat-treatable aluminum alloy, 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, solid solution temperature can be heated to and be incubated for some time and make its internal component, microstructure homogenization by heat-treatable aluminum alloy blank; Then in synchronous quenching hot-forming die, stamping and solution treatment is carried out to blank simultaneously; And after recontour, obtain part net shape and size; Finally carry out ageing treatment.
Synchronous quenching heat forming technology be utilize be 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 the thermal conduction between plate blank and mould to cool fast plate simultaneously, thus realize can carry out object that is stamping and 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 DEG C, be then quickly cooled to room temperature.And aluminium alloy more than 200 DEG C time, its forming property improves a lot relative to during room temperature, but shaping drag reduce.Therefore, the aluminum alloy part precision being shaped out is in a heated state high, and required stamping press is little.So can utilize can the higher feature of heat-treatable aluminum alloy temperature when solution treatment starts, can carry out in the process of heat-treatable aluminum alloy plate solution treatment simultaneously stamping.
Carry out in synchronous quenching heat forming processes can the solution treatment of heat-treatable aluminum alloy and stamping simultaneously, with traditional can the first cold stamping of heat-treatable aluminum alloy sheet forming part be shaped after compared with solid solution treatment process advantage be:
(1) carry out at high operating temperatures can the shaping of heat-treatable aluminum alloy plate for synchronous quenching heat forming technology, and aluminium alloy forming property has obvious lifting under comparing room temperature condition, and deflection is large, plastic force is little, forming accuracy is high;
(2) synchronous quenching heat forming technology forms and solution treatment two procedures simultaneously, do not increase extra operation, can not manufacturing cost be increased, and in the quenching process of solution treatment Al-alloy products all the time with contacting dies, buckling deformation can not be caused because expanding with heat and contract with cold;
(3) because the as-heat-treated condition of blank can to having an impact by heat-treatable aluminum alloy sheet metal formability, annealed state (O state) blank can be often adopted in heat-treatable aluminum alloy plate cold stamping forming process so traditional, this just make non-annealing state (O state) can heat-treatable aluminum alloy blank cold stamping be shaped before must carry out annealing operation, and blank is directly heated solid solution temperature by the heat forming technology that synchronously quenches, the as-heat-treated condition of blank can not have an impact to synchronous quenching formed process, can can the production of heat-treatable aluminum alloy punching parts with directly utilizing the blank of rolling state to carry out, so synchronous quenching heat forming technology relatively traditional can the first cold stamping of heat-treatable aluminum alloy sheet forming part be shaped after solid solution treatment process, there is energy consumption low, the feature that cost is low.
(4) synchronously can quench in heat forming processes by heat-treatable aluminum alloy plate, only need once to heat alloy plate material, without the need to heating mould, 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 solution treatment twice heating to plate, and can need to heat mould in warm forming process by heat-treatable aluminum alloy plate.So, with traditional can compared with heat-treatable aluminum alloy plate warm forming+solid solution treatment process, synchronous quenching heat forming technology energy consumption is low, production efficiency is high, easy and simple to handle, and the material mechanical performance that can not occur to cause because of grain growth declines.
Visible, being applied to by the heat forming technology that synchronously quenches can the production of heat-treatable aluminum alloy product, and be equipped with suitable ageing treatment after such shaping, can on the basis ensureing alloy product performance, shorten the production cycle, improve product forming accuracy, reduce production cost, be with a wide range of applications.
Accompanying drawing explanation
Fig. 1 is for can synchronously to quench heat forming technology schema by heat-treatable aluminum alloy.
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, for shown in Fig. 3, comprises mold 1 and cooling water channel 2.
Embodiment 1:
The synchronous quench bend of H18 state 7075 alloy plate material being 0.8mm with southwestern aluminium producing thickness is configured as example, and its main component is as shown in table 1.According to the regulation of Fig. 2 and table 3 in GB16865-1997 " distortion aluminium, magnesium and alloy fabricated product tension test sample thereof ", sample is intercepted from blank, according to GB 228.1-2010 " tensile test of metallic materials first part: room temperature experimental technique ", record H18 state 7075 aluminium alloy blank mechanical property as shown in table 2.
H18 state 7075 al alloy component used tested by table 1
| 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 |
H18 state 7075 Mechanical Properties of Aluminum Alloys used tested by table 2
| Alloy/state | Nonproportional cyclic straining (Rp0.2/MPa) | Tensile strength (Rm/ MPa) | Elongation after fracture (A%) |
| 7075/H18 | 340.86 | 383.33 | 6.05 |
(1) forming workblank makes: utilize punching process by 7075 aluminium alloy processing growth 184mm wide 80mm pliability test blank.Other modes such as Linear cut or laser cutting can also be selected according to condition in specific implementation process.
(2) be heated to solid solution temperature and be incubated: blank is heated to 465 DEG C (intermediate values of 460 ~ 470 DEG C) and after being incubated 10min, obtains single-phase supersaturated solid solution.
(3) synchronously to quench thermoforming: 7075 aluminium alloy blanks after heating are moved into the hot-forming die that synchronously quenches in 10s, carry out stamping with the speed of 100mm/s, pressurize 1min after punching press completes, then open mould and take out product, obtaining room temperature undertissue is single-phase supersaturated solid solution, and shape is 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: heat parts step (4) produced is to 120 DEG C, and insulation 24h, then air cooling is to room temperature, and final production goes out 7075 aluminium alloy crooked parts.
According to the regulation of Fig. 2 and table 3 in GB16865-1997 " distortion aluminium, magnesium and alloy fabricated product tension test sample thereof ", sample is intercepted from part, 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 compare with GB3880.2-2012 " general industry Al and Alalloy plate, band part 2: mechanical property ", as shown in table 3.
7075 aluminium alloy capabilities after table 3 synchronously quenching thermoforming
| Alloy/state | Nonproportional cyclic straining (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 controls, after experience synchronous quench thermoforming and artificial aging process, the tensile strength of material, nonproportional cyclic straining and elongation after fracture, all meet and exceed the standard gauge definite value of T6 state, and roughly the same with the mechanical property of 7075 parts that obtains under tradition " cold stamping be shaped+solution treatment+artificial aging " technique under same process Parameter Conditions.
In bending forming process, the springback capacity after different green state 60 ° of angles place on mould bends is as shown in table 4:
The springback angle of table 47075 aluminium alloy bending forming part at 60 ° of angles place
| Alloy/state | Springback angle (°) |
| 7075/H18 synchronously quenches thermoforming | 0.03 |
| 7075/O | 1.37 |
| 7075/W (in traditional solution process 1 hour) | 2.66 |
| 7075/H18 | 10.34 |
By table 4 relative to traditional " cold stamping shaping+solution treatment " technique, can significantly reduce by the bending springback of heat-treatable aluminum alloy 7075 when being shaped under synchronous quenching heat forming technology condition.Further, in synchronous quenching heat forming processes, owing to being the quick process of cooling of carrying out solution treatment in a mold, 7075 alloy plate materials can not produce buckling deformation.So the part shape that synchronous quenching heat forming technology obtains and dimensional precision are obviously better than the part that traditional " cold stamping shaping+solution treatment " manufacture technics goes out.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, create larger viscous deformation, and under these two kinds of test conditionss, the free shape region of part there occurs larger warpage.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 warpage to be out of shape keeping down.Other test conditionss relatively, in synchronous quenching heat forming processes, shaping and quenching process carry out simultaneously, the buckling deformation caused owing to expanding with heat and contract with cold can not be produced, so the External Shape made of synchronous quench bend forming technology is smooth and do not have warpage under the effect of mould.
Embodiment 2:
The synchronous quench bend of H18 state 2024 alloy plate material being 1mm with southwestern aluminium producing thickness is configured as example, and its main component is as shown in table 5.According to the regulation of Fig. 2 and table 3 in GB16865-1997 " distortion aluminium, magnesium and alloy fabricated product tension test sample thereof ", sample is intercepted from blank, according to GB 228.1-2010 " tensile test of metallic materials first part: room temperature experimental technique ", record H18 state 2024 aluminium alloy blank mechanical property as shown in table 6.
H18 state 2024 al alloy component used tested by table 5
| 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 |
H18 state 2024 Mechanical Properties of Aluminum Alloys used tested by table 6
| Alloy/state | Nonproportional cyclic straining (Rp0.2/MPa) | Tensile strength (Rm/ MPa) | Elongation after fracture (A%) |
| 2024/H18 | 290.69 | 312.10 | 4.75 |
(1) forming workblank makes: utilize punching process by H18 state 2024 aluminium alloy processing growth 184mm wide 80mm pliability test blank.
(2) be heated to solid solution temperature and be incubated: blank is heated to 495 DEG C (intermediate values of 490 ~ 500 DEG C) and after being incubated 10min, obtains single-phase supersaturated solid solution.
(3) synchronously to quench thermoforming: 2024 aluminium alloy blanks after heating are moved into synchronous quenching formed mould in 10s, carry out stamping with the speed of 100mm/s, pressurize 1min after punching press completes, then open mould and take out product, obtaining room temperature undertissue is single-phase supersaturated solid solution, and shape is 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 at room temperature is placed 96h, final production goes out 7075 aluminium alloy crooked parts.
According to the regulation of Fig. 2 and table 3 in GB16865-1997 " distortion aluminium, magnesium and alloy fabricated product tension test sample thereof ", sample is intercepted from part, 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 compare with GB3880.2-2012 " general industry Al and Alalloy plate, band part 2: mechanical property ", as shown in table 7.
Synchronous quenching formed rear 2024 aluminium alloy capabilities of table 7
| Alloy/state | Nonproportional cyclic straining (Rp0.2/MPa) | Tensile strength (Rm/ MPa) | Elongation after fracture (A%) |
| H18 state 2024 aluminium alloy blank synchronously quenches thermoforming+artificial aging | 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 controls, after experience synchronous quench thermoforming and natural aging treatment, the tensile strength of material, nonproportional cyclic straining 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 obtained under tradition " cold stamping shaping+solution treatment+natural aging " technique under same process Parameter Conditions.
H18 state 2024 aluminium alloy blank in traditional cold bending forming process on mould bending radius 5mm position there occurs fracture, illustrate that the minimum bending radius of H18 state 2024 aluminium alloy is greater than 5mm.And fracture is there will not be under synchronous quenching heat forming technology, minimum bending radius is less than 5mm, and visible synchronous quenching heat forming technology can improve the forming property of H18 state 2024 aluminium alloy.
In bending forming process, the springback capacity after different 2024 aluminium alloy green state 60 ° of angles place on mould bends is as shown in table 8:
The springback angle of table 82024 aluminium alloy bending forming part at 60 ° of angles place
| 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 relative to traditional " cold stamping shaping+solution treatment " technique, can significantly reduce by the bending springback of heat-treatable aluminum alloy 2024 when being shaped under synchronous quenching heat forming technology condition.Further, in synchronous quenching heat forming processes, owing to being the quick process of cooling of carrying out solution treatment in a mold, 2024 alloy plate materials can not produce buckling deformation.So the part shape that synchronous quenching heat forming technology obtains and dimensional precision are obviously better than the part that traditional " cold stamping shaping+solution treatment " manufacture technics goes out.
Claims (1)
1. synchronously can to quench a heat forming technology by heat-treatable aluminum alloy, it is characterized in that, adopt following steps to carry out:
(1) preparation can heat-treatable aluminum alloy blank: utilize the technique of stamping-out, Linear cut or laser cutting can be processed into the forming workblank of desired shape by heat-treatable aluminum alloy;
(2) heating and thermal insulation: solid solution temperature can be heated to 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: by can move into the synchronous quenching formed mould of cooling water channel by heat-treatable aluminum alloy blank after heating, carry out stamping and pressurize;
(4) profile cutting: the aluminium alloy after step (3) being 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 after making solution treatment under room temperature state is separated out, and forms the tiny strengthening phase be evenly distributed on matrix;
Wherein the aluminium alloy described in step (1) is 2XXX system, 6XXX system or 7XXX system; Treatment temp described in step (2) is 420-540 DEG C; Immigration described in step (3) the synchronous quenching formed mould time is 5-20 second; Stamping drawing velocity described in step (3) is greater than 100mm/s; The time of the pressurize described in step (3) is 30-120 second; Profile cutting described in step (4) uses stamping-out, laser cutting or mach method.
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| CN110405033B (en) * | 2019-07-16 | 2020-11-10 | 北京机科国创轻量化科学研究院有限公司 | High-strength aluminum alloy hot stamping-fiber thermosetting composite re-reinforcing forming process |
| 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 |
| CN114318182B (en) * | 2021-12-24 | 2022-10-25 | 大连理工大学 | Hot forming method and device for large-size high-strength aluminum alloy aviation thin-wall part |
| CN115365361A (en) * | 2022-09-16 | 2022-11-22 | 吉林大学 | 7075-T6 aluminum alloy contact heating forming method |
| 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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