CN108165907A - Car crass energy absorbing component production process of aluminium section and the aluminium section bar of production - Google Patents
Car crass energy absorbing component production process of aluminium section and the aluminium section bar of production Download PDFInfo
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- CN108165907A CN108165907A CN201810153692.1A CN201810153692A CN108165907A CN 108165907 A CN108165907 A CN 108165907A CN 201810153692 A CN201810153692 A CN 201810153692A CN 108165907 A CN108165907 A CN 108165907A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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Abstract
The invention discloses a kind of car crass energy absorbing component production process of aluminium section and the aluminium section bars of production, are related to aluminium and aluminium alloy extruded processing and technical field of heat treatment.The production technology includes the following steps：Aluminium alloy ingots carries out homogenizing annealing processing, extruding, quenching treatment, stretch processing and ageing treatment successively；Wherein, aluminium alloy ingots is cooled to 490 525 DEG C, then squeezed after homogenizing annealing processing；Ageing treatment includes first natural aging treatment and carries out two level artificial aging processing again, the natural aging treatment time is 30 60h, and the first artificial aging stage holding temperature is 100 120 DEG C, and soaking time is 2 3.5h, second artificial aging stage holding temperature is 150 170 DEG C, and soaking time is 8 12h.Production technology of the present invention does not reduce plasticity by rationally designing extrusion process and heat treatment process parameter while tensile mechanical properties are improved, and aluminium section bar is made to have preferable compression performance.
Description
Technical field
The present invention relates to aluminium and aluminium alloy extruded processing and technical field of heat treatment, are touched in particular to a kind of automobile
Hit energy absorbing component production process of aluminium section and the aluminium section bar of production.
Background technology
Automotive light weight technology becomes the popular trend of domestic and international automobile manufacture industry, with constantly should for the riding vehicle body of full aluminium
With advantage of the aluminium alloy in light weight material in automobile is showed fully.For existing application situation, Aluminum alloy extrusion material extensively should
For positions such as passenger car heat-exchanging piece, multi-channel tube, joist, support element, collision prevention girders.Wherein, prevent for applying in automobile
It for the aluminium section bar for hitting the positions such as beam, energy-absorption box, usually requires that with moderate strength, and with excellent collision performance and bending
Mouldability.For the test rating of collision performance, generally using the compression performance of aluminium section bar, this performance is usual for locomotive works
It is tested and carried out using quasistatic compression preferable with collision performance relevance.Compression performance usually chooses 300mm or so length
Total cross-section sample is compressed on forcing press with 50mm/min or so speed, passes through folded deformation in aluminium section bar compression process
Situation and cracked assessment of scenario its compression performance, it is unacceptable that general cracked length is more than 15mm.
Domestic automobile manufacturer designs the aluminium section bar for being used for collision energy-absorbing component and uses the conjunctions such as 6082,7005 and 7003 more
Gold, but the constituent content of this kind of alloy is high, and extruding difficulty is big, and frequently can lead to the drop of plasticity after tensile mechanical properties raising
It is low, so as to make aluminium section bar compression performance poor.
Therefore, the aluminium section bar for developing a kind of moderate strength and excellent compression performance is significant.
In view of this, the present invention is proposed.
Invention content
One of the objects of the present invention is to provide a kind of car crass energy absorbing component production process of aluminium section, technique warps
Homogenizing annealing, extruding, quenching, stretching and ageing treatment are crossed, by rationally designing extrusion process and heat treatment process, is being improved
Plasticity is not reduced while tensile mechanical properties, makes aluminium section bar that there is preferable compression performance.In addition, the production technology of the present invention
Simply, it can be produced in batches by common extruding and heat treating facilities.
The second object of the present invention is that provide a kind of car crass energy absorbing component is given birth to production process of aluminium section
The aluminium section bar of production, not only intensity is high, but also compression performance is preferable for the aluminium section bar.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
In a first aspect, providing a kind of car crass energy absorbing component production process of aluminium section, include the following steps：
Aluminium alloy ingots carries out homogenizing annealing processing, extruding, quenching treatment, stretch processing and ageing treatment successively, obtains
Car crass energy absorbing component aluminium section bar；
Wherein, aluminium alloy ingots is cooled to 490-525 DEG C, then squeezed after homogenizing annealing processing；
Ageing treatment includes first natural aging treatment and carries out two level artificial aging processing again, and the natural aging treatment time is
30-60h, the first artificial aging stage holding temperature are 100-120 DEG C, soaking time 2-3.5h, the second artificial aging stage
Holding temperature is 150-170 DEG C, soaking time 8-12h.
Preferably, on the basis of technical solution provided by the invention, homogenizing annealing processing holding temperature is 550-580
DEG C and/or, soaking time 5-10h；
Preferably, homogenizing annealing processing holding temperature for 560-580 DEG C and/or, soaking time 5-9h；
It is further preferred that homogenizing annealing processing holding temperature for 560-580 DEG C and/or, soaking time 5-8h.
Preferably, on the basis of technical solution provided by the invention, aluminium alloy ingots cooling is using natural cooling or fan
Cooling and/or, aluminium alloy ingots surface and internal temperature difference are within 2 DEG C after control cooling；
Preferably, aluminium alloy ingots is cooled to 490-525 DEG C, is then sent directly into pressurizing unit and is squeezed, close aluminium
Ingot is by producing cavity aluminium section bar after extrusion die；
Preferably, pressurizing unit heating temperature for 400-450 DEG C and/or, extrusion die heating temperature is 460-490 DEG C,
And/or aluminium section bar extruded velocity is 3-20m/min.
Preferably, on the basis of technical solution provided by the invention, quenching treatment is on-line cooling quenching treatment；
Preferably, during on-line cooling quenching treatment using wind, water mist, water or liquid nitrogen medium, the aluminium section bar cooldown rate is made to be
5-8 DEG C/s, it is 0.8-1.5m that pressurizing unit, which is exported to quenching cooling zone inlet distance,.
Preferably, on the basis of technical solution provided by the invention, stretch processing is to be carried out along aluminium section bar length direction
It stretches, extensibility 0.3-3%, preferably 0.5-2%, further preferably 0.8-1.5%.
Preferably, on the basis of technical solution provided by the invention, the natural aging treatment time is 40-60h, preferably
50-60h；And/or
First artificial aging stage holding temperature is 100-110 DEG C, soaking time 3-3.5h, the second artificial aging stage
Holding temperature is 150-160 DEG C, soaking time 10-12h.
Preferably, on the basis of technical solution provided by the invention, the aluminium alloy ingots include weight percent as
Lower ingredient：Si 0.85-1.2%, Fe 0.15-0.45%, Cu≤0.1%, Mn 0.5-1.0%, Mg 0.7-1.1%, Cr≤
0.15%, Zn≤0.2%, Ti 0.04-0.1%, Nb and V total amount≤0.1%, surplus are Al and impurity.
Preferably, on the basis of technical solution provided by the invention, the aluminium alloy ingots include weight percent as
Lower ingredient：Si 0.85-1.2%, Fe 0.15-0.45%, Cu≤0.1%, Mn 0.5-0.7%, Mg 0.7-1.1%, Cr≤
0.15%, Zn 0.15-0.2%, Ti 0.04-0.08%, Nb and V total amount≤0.1%, surplus are Al and impurity；
Preferably, the aluminium alloy ingots includes the following ingredient of weight percent：Si 0.85-1%, Fe 0.2-
0.35%, Cu≤0.1%, Mn 0.6-0.7%, Mg 0.8-1%, Cr≤0.15%, Zn 0.15-0.2%, Ti 0.06-
0.08%, Nb and V total amount≤0.1%, surplus are Al and impurity.
Preferably, on the basis of technical solution provided by the invention, a kind of typical car crass energy absorbing component aluminium
Section bar production technology, includes the following steps：
(a) homogenizing annealing is handled：Aluminium alloy ingots made of NS6082 alloy materials is subjected to homogenizing annealing processing, is protected
Temperature is 550-580 DEG C, soaking time 5-10h；
The aluminium alloy ingots includes the following ingredient of weight percent：Si 0.85-1.2%, Fe 0.15-0.45%, Cu
≤ 0.1%, Mn 0.5-1.0%, Mg 0.7-1.1%, Cr≤0.15%, Zn≤0.2%, Ti 0.04-0.1%, Nb and V are total
Amount≤0.1%, surplus are Al and impurity；
(b) it cools down and squeezes：Aluminium alloy ingots is cooled to 490-525 DEG C, pressurizing unit is then sent directly into and is squeezed,
Ingot is enabled aluminum alloy to by producing cavity aluminium section bar after extrusion die；Wherein, pressurizing unit heating temperature is 400-450 DEG C, is squeezed
Compression mould heating temperature is 460-490 DEG C, and aluminium section bar extruded velocity is 3-20m/min；
(c) press quenching cooling treatment：Water spray online and strong wind cooling quenching, cooling are carried out to the cavity aluminium section bar of extrusion
Area's entrance to pressurizing unit outlet distance is 0.8-1.5m, and quenching cooling rate is 5-8 DEG C/s；
(d) straightening pull：Aluminium section bar carries out stretch processing, extensibility 0.3-3% after cooling；
(e) ageing treatment：To the aluminium section bar after stretching when workshop parks 30-60h progress natures under room temperature
Effect processing then carries out two level artificial aging processing, and the first artificial aging stage holding temperature is 100-120 DEG C, soaking time
For 2-3.5h, the second artificial aging stage holding temperature is 150-170 DEG C, soaking time 8-12h.
Second aspect provides a kind of aluminium section bar of above-mentioned car crass energy absorbing component production process of aluminium section production.
Compared with the prior art, the present invention has the advantages that：
(1) present invention proposes a kind of car crass energy absorbing component aluminium section bar applied at positions such as collision prevention girders, energy-absorption boxes
Production technology, the technique pass through homogenizing annealing, extruding, quenching, stretching and ageing treatment, by rationally design extrusion process and
Heat treatment process, including ingot casting postcooling temperature, natural and artificial aging technological parameter ensures improving tensile mechanical properties
Plasticity is not reduced simultaneously, makes aluminium section bar that there is preferable compression performance.The car crass energy-absorbing portion produced using the production technology
Not only intensity is high, but also compression performance is preferable with aluminium section bar for part.
(2) simple production process of the invention, can be produced in batches by common extruding and heat treating facilities.
(3) the optional present invention preferably optimizes aluminium alloy ingots (such as NS6082) alloying component proportioning, optimizes
The type and ratio of hardening constituent and intermetallic compound in alloy, convenient for the optimal control of aluminium section bar internal microstructure structure,
It is easy to realize by existing aluminium alloy smelting and Casting Equipment.
(4) the typical car crass energy absorbing component production process of aluminium section of the optional present invention is suitable by selecting
Raw material and the technological parameter for matching specified raw material component, the NS6082 alloy T64 state Extrusion Process of Aluminum Alloy Profile directions room produced
Warm tensile mechanical properties meet following index request：Tensile strength in more than 300MPa, have no progeny in more than 260MPa by yield strength
Elongation is more than 10%；The cavity aluminium section bar of extrusion, total cross-section sample is after quasistatic compression is tested, without apparent imperfect
Property crush, and surface laps deformation is uniform, crack length≤15mm or flawless.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person, the condition suggested according to normal condition or manufacturer carry out.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
According to an aspect of the invention, there is provided a kind of car crass energy absorbing component production process of aluminium section, including
Following steps：
Aluminium alloy ingots carries out homogenizing annealing processing, extruding, quenching treatment, stretch processing and ageing treatment successively, obtains
Car crass energy absorbing component aluminium section bar；Wherein, aluminium alloy ingots is cooled to 490-525 DEG C after homogenizing annealing processing, then into
Row squeezes；Ageing treatment includes first natural aging treatment and carries out two level artificial aging processing again, and the natural aging treatment time is 30-
60h, the first artificial aging stage holding temperature are 100-120 DEG C, soaking time 2-3.5h, the heat preservation of the second artificial aging stage
Temperature is 150-170 DEG C, soaking time 8-12h.
Aluminium alloy used in typical but non-limiting car crass energy absorbing component aluminium section bar include NS6082,7005 or
7003 etc..
The production technology of the present invention includes successively：Homogenizing annealing processing, extruding, quenching treatment, stretch processing and timeliness
Processing.
Homogenizing annealing processing is to carry out long-time heating using in high temperature, and internal chemical composition is made fully to spread.Add
Hot temperature can be not construed as limiting homogenizing annealing processing parameter, can be adopted for aluminium alloy type because of aluminium alloy type difference
With conventional Homogenization Treatments temperature and time.
Aluminium alloy ingots is cooled to 490-525 DEG C, then squeezed after homogenizing annealing processing.
Typical but non-limiting ingot casting postcooling temperature is, for example, 490 DEG C, 495 DEG C, 500 DEG C, 505 DEG C, 510 DEG C, 515
DEG C, 520 DEG C or 525 DEG C.
Ingot casting postcooling temperature is controlled at 490-525 DEG C, then squeeze and be can guarantee that aluminium section bar obtains preferable room temperature and draws
Stretch mechanical property and compression performance.
Extruding refers to is squeezed into extrudate using pressurizing unit under the action of mold by aluminium alloy ingots.
Preferably, aluminium alloy ingots is cooled to 490-525 DEG C, is then sent directly into pressurizing unit and is squeezed, close aluminium
Ingot is by producing cavity aluminium section bar after extrusion die.
Preferably, pressurizing unit is extrusion cylinder.
The usual manner that aluminium alloy extrusions may be used in extrusion process parameter carries out.
Quenching is after workpiece heat is kept the temperature, quick in the quenching medias such as water, oil or other inorganic salts, aqueous organopolysiloxane
The process of cooling.
The usual manner that aluminium alloy extrusions may be used in quenching treatment carries out.
Stretch processing refers to quenched Aluminum alloy extrusion material and applies a certain amount of permanent elongation plastic deformation along the direction of extrusion,
Tensile stress is made to be plastically deformed after being superimposed with original quenched residual stress, residual stress is enable to mitigate and discharge.
The usual manner that aluminium alloy extrusions may be used in stretch processing carries out.
Ageing treatment refers to metal or alloy workpiece and is quenched from high temperature or after a degree of cold deformation, higher
Temperature or be placed at room temperature for, make the heat treatment process of its performance time to time change.
The ageing treatment of the present invention includes first natural aging treatment and carries out two level artificial aging processing, natural aging treatment again
Time is 30-60h, and the first artificial aging stage holding temperature is 100-120 DEG C, soaking time 2-3.5h, second it is artificial when
Effect stage holding temperature is 150-170 DEG C, soaking time 8-12h.
Here natrual ageing is to park aluminium section bar under the conditions of workshop room temperature (workshop environment temperature).
The typical but non-limiting natural aging treatment time is, for example, 30h, 40h, 50h or 60h.
Artificial aging include two steps, the first artificial aging stage holding temperature it is typical but non-limiting be, for example, 100 DEG C,
110 DEG C or 120 DEG C；Typical but non-limiting first artificial aging stage soaking time is, for example, 2h, 2.5h, 3h or 3.5h；
Typical but non-limiting second artificial aging stage holding temperature is, for example, 150 DEG C, 160 DEG C or 170 DEG C；Second artificial aging
Typical but non-limiting stage soaking time is, for example, 8h, 9h, 10h, 11h or 12h.
It is handled by the natrual ageing and two level artificial aging of certain time, tensile property and the compression of aluminium section bar can be made
Performance reaches preferable level.
Car crass energy absorbing component of the present invention with production process of aluminium section by homogenizing annealing, extruding, quenching, stretching and
Ageing treatment, by rationally designing extrusion process and heat treatment process parameter, such as ingot casting postcooling temperature, when natural and artificial
Technological parameter is imitated, ensures not reduce plasticity while tensile mechanical properties are improved, makes aluminium section bar that there is preferable compression performance.
Using the car crass energy absorbing component aluminium section bar not only intensity height, but also compression performance is preferable of production technology production.
In a preferred embodiment, homogenizing annealing processing holding temperature for 550-580 DEG C and/or, during heat preservation
Between be 5-10h；
Preferably, homogenizing annealing processing holding temperature for 560-580 DEG C and/or, soaking time 5-9h；
It is further preferred that homogenizing annealing processing holding temperature for 560-580 DEG C and/or, soaking time 5-8h.
The holding temperature of homogenizing annealing processing procedure is typical but non-limiting be, for example, 550 DEG C, 560 DEG C, 570 DEG C or
580℃；Typical but non-limiting soaking time is, for example, 5h, 6h, 7h, 8h, 9h or 10h.
By using certain temperature and time isothermal holding, each ingredient full and uniformization in ingot can be enabled aluminum alloy to, favorably
Moderate strength and the outstanding aluminium section bar of excellent compression performance are obtained in the later stage.
In a preferred embodiment, aluminium alloy ingots cooling using natural cooling or fan coolling and/or, control
Aluminium alloy ingots surface and internal temperature difference are within 2 DEG C after cooling；
Preferably, aluminium alloy ingots is cooled to 490-525 DEG C, is then sent directly into pressurizing unit and is squeezed, close aluminium
Ingot is by producing cavity aluminium section bar after extrusion die.
By controlling the type of cooling, preferable room temperature tensile mechanical property and compressibility are obtained after can guarantee Extrusion Process of Aluminum Alloy Profile
Energy.
In a preferred embodiment, pressurizing unit heating temperature for 400-450 DEG C and/or, extrusion die heating
Temperature for 460-490 DEG C and/or, aluminium section bar extruded velocity is 3-20m/min.
Pressurizing unit heating temperature it is typical but non-limiting be, for example, 400 DEG C, 410 DEG C, 420 DEG C, 430 DEG C, 440 DEG C or
450℃。
Typical but non-limiting extrusion die heating temperature is, for example, 460 DEG C, 470 DEG C, 480 DEG C or 490 DEG C.
Typical but non-limiting aluminium section bar extruded velocity is, for example, 3m/min, 4m/min, 5m/min, 6m/min, 8m/
Min, 10m/min, 12m/min, 14m/min, 15m/min, 16m/min, 18m/min or 20m/min.
By controlling squeezing parameter, the generation of aluminium section bar localized cracks can be avoided, obtains high-quality extrusion.
In a preferred embodiment, quenching treatment is on-line cooling quenching treatment；
Preferably, during on-line cooling quenching treatment using wind, water mist, water or liquid nitrogen medium, the aluminium section bar cooldown rate is made to be
5-8 DEG C/s, it is 0.8-1.5m that pressurizing unit, which is exported to quenching cooling zone inlet distance,.
Cooldown rate it is typical but non-limiting be, for example, 5 DEG C/s, 6 DEG C/s, 7 DEG C/s or 8 DEG C/s.
Pressurizing unit be exported to quenching cooling zone inlet distance be, for example, 0.8m, 0.9m, 1m, 1.1m, 1.2m, 1.3m,
1.4m or 1.5m.
The selection of the type of cooling should make section bar cooling strain degree minimum under the premise of cooldown rate is ensured.By using with
Upper quenching processing mode, can obtain the aluminium section bar that intensity is medium, compression performance is outstanding.
In a preferred embodiment, to be stretched along aluminium section bar length direction, extensibility is for stretch processing
0.3-3%, preferably 0.5-2%, further preferably 0.8-1.5%.
Extensibility refers to the percentage that the length that squeeze wood is stretched accounts for length before squeeze wood stretches.
Typical but non-limiting extensibility is, for example, 0.3%, 0.5%, 1%, 1.5%, 2%, 2.5% or 3%.
Residual stress can be enable to mitigate and discharge, energy by the stretching for carrying out 0.3-3% along squeeze wood length direction
The comprehensive performances such as the enough intensity for further promoting the aluminium section bar finally obtained and compression.
In a preferred embodiment, the natural aging treatment time is 40-60h, preferably 50-60h；And/or
First artificial aging stage holding temperature is 100-110 DEG C, soaking time 3-3.5h, the second artificial aging stage
Holding temperature is 150-160 DEG C, soaking time 10-12h.
By advanced optimizing ageing treatment parameter, intensity and the more outstanding aluminium section bar of compression performance can be obtained.
It is imitated it should be noted that the selection of the temperature and time of first stage and second stage should combine aluminium section bar press quenching
Fruit and shove charge situation, and using final mechanical property and compression performance result of the test as Main Basiss.Typically, when selecting artificial
When imitating temperature and time parameter, holding temperature selects soaking time during the upper limit preferentially to select lower limit, holding temperature selection lower limit
When soaking time preferentially to select the upper limit, be otherwise likely to result in tensile property and compression performance fall flat.
In a preferred embodiment, aluminium alloy ingots includes the following ingredient of weight percent：Si0.85-1.2%,
Fe 0.15-0.45%, Cu≤0.1%, Mn 0.5-1.0%, Mg 0.7-1.1%, Cr≤0.15%, Zn≤0.2%, Ti
0.04-0.1%, Nb and V total amount≤0.1%, surplus are Al and impurity.
The typical but non-limiting weight percent of Si ingredients is for example 0.85%, 0.9%, 0.95%, 1% or
1.2%；The typical but non-limiting weight percent of Fe ingredients is for example 0.15%, 0.16%, 0.18%, 0.20%,
0.25%th, 0.3%, 0.35%, 0.4% or 0.45%；The typical but non-limiting weight percent of Cu ingredients for example for
0.05%th, 0.07% or 0.10%；The typical but non-limiting weight percent of Mn ingredients is for example 0.5%, 0.6%,
0.7%th, 0.8,0.9% or 1%；The typical but non-limiting weight percent of Mg ingredients is for example 0.7%, 0.8%, 0.9%,
1% or 1.1%；The typical but non-limiting weight percent of Cr ingredients is for example 0.1%, 0.12% or 0.15%；Zn ingredients
Typical but non-limiting weight percent is for example 0.05%, 0.1%, 0.15% or 0.2%；Ti ingredients are typical but unrestricted
The weight percent of property is for example 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09% or 0.1%.
The " comprising " means it in addition to the ingredient, can also include other compositions, and the " comprising " can also be replaced
Be changed to enclosed " for " or " by ... form ".
It should be noted that surplus be Al and impurity, refer in the ingredient of aluminium alloy ingots remove Si, Fe, Cu, Mn, Mg, Cr,
Surplus except Zn, Ti, Nb, V and other elements is Al and impurity, Al and Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti, Nb, V, miscellaneous
The sum of weight percentage of matter and other elements ingredient is 100%.
Mg and Si elements are forming Mg in alloying component2Si dispersion-strengtherning phases, but should preferably be such that during the two Composition Control
Mg with Si contents are identical, thus reduce the content of surplus Si.The selection of Mg, Si and Cu constituent content should make liquidoid and solid phase
Temperature difference between line is sufficiently high to realize extruding press quenching, and preferable temperature difference reaches 30 DEG C or more.Fe contents are impurity element
Content forms intermetallic compound with Al, Mn and Si, such intermetallic compound of submicron order has certain invigoration effect,
And crystal grain can be hindered to grow up, it therefore, is controlled and is reached the standard grade in, and pass through homogenization heat treatment by its size Control smaller
Range, preferably 1 μm and less.Mn and Cr elements can function well as the work for inhibiting to recrystallize by forming compound with Al
With so as to which aluminium section bar microscopic structure be made to retain extrusion fiber shape and extrusion effect, raising aluminium section bar tensile mechanical properties, Mn contents
Too low not have an invigoration effect, Mn contents are more than that 0.7% can lead in as-cast structure that there are mass crystallization phase and net metals again
Between compound, it is difficult to by homogenize heat treatment effectively eliminate, so as to reduce aluminium section bar comprehensive performance, therefore be preferably controlled in
0.5-0.7%.For Zn elements is enable to play certain solution strengthening effect, preferably Zn contents are 0.15-0.2%.Ti、V、Nb
Element can play the role of preferably refining casting crystal grain, and by Al-Ti-B addition Ti elements, its content is preferably controlled
In the range of 0.04-0.85%.It is appropriate to add in Nb and V element, the control of the two overall content to improve the compression performance of aluminium section bar
0.1% and less.
It is optimized by the composition proportion to aluminium alloy ingots, the aluminium alloy ingots of this composition proportion with above-mentioned technique by joining
Number cooperates, and the aluminium section bar produced has excellent intensity and compression performance.
Preferably, aluminium alloy ingots includes the following ingredient of weight percent：Si 0.85-1.2%, Fe 0.15-0.45%,
Cu≤0.1%, Mn 0.5-0.7%, Mg 0.7-1.1%, Cr≤0.15%, Zn 0.15-0.2%, Ti 0.04-0.08%,
Nb and V total amount≤0.1%, surplus are Al and impurity；
It is further preferred that aluminium alloy ingots includes the following ingredient of weight percent：Si 0.85-1%, Fe 0.2-
0.35%, Cu≤0.1%, Mn 0.6-0.7%, Mg 0.8-1%, Cr≤0.15%, Zn 0.15-0.2%, Ti 0.06-
0.08%, Nb and V total amount≤0.1%, surplus are Al and impurity.
It is advanced optimized by the chemical composition to aluminium alloy, hardening constituent and intermetallic compound in optimized alloy
Type and ratio are conducive to give full play to the performance of aluminium alloy, and alloy is avoided to be produced in quenching or heating since the temperature difference is larger
Raw crackle can obtain intensity and the more excellent aluminium section bar of compression performance after heat treatment.
Preferably, a kind of typical car crass energy absorbing component production process of aluminium section, includes the following steps：
(a) homogenizing annealing is handled：Aluminium alloy ingots made of NS6082 alloy materials is subjected to homogenizing annealing processing, is protected
Temperature is 550-580 DEG C, soaking time 5-10h；
The aluminium alloy ingots includes the following ingredient of weight percent：Si 0.85-1.2%, Fe 0.15-0.45%, Cu
≤ 0.1%, Mn 0.5-1.0%, Mg 0.7-1.1%, Cr≤0.15%, Zn≤0.2%, Ti 0.04-0.1%, Nb and V are total
Amount≤0.1%, surplus are Al and impurity；
(b) it cools down and squeezes：Aluminium alloy ingots is cooled to 490-525 DEG C, pressurizing unit is then sent directly into and is squeezed,
Ingot is enabled aluminum alloy to by producing cavity aluminium section bar after extrusion die；Wherein, pressurizing unit heating temperature is 400-450 DEG C, is squeezed
Compression mould heating temperature is 460-490 DEG C, and aluminium section bar extruded velocity is 3-20m/min；
(c) press quenching cooling treatment：Water spray online and strong wind cooling quenching, cooling are carried out to the cavity aluminium section bar of extrusion
Area's entrance to pressurizing unit outlet distance is 0.8-1.5m, and quenching cooling rate is 5-8 DEG C/s；
(d) straightening pull：Aluminium section bar carries out stretch processing, extensibility 0.3-3% after cooling；
(e) ageing treatment：To the aluminium section bar after stretching when workshop parks 30-60h progress natures under room temperature
Effect processing then carries out two level artificial aging processing, and the first artificial aging stage holding temperature is 100-120 DEG C, soaking time
For 2-3.5h, the second artificial aging stage holding temperature is 150-170 DEG C, soaking time 8-12h.
Car crass energy absorbing component production process of aluminium section of the invention typical by select suitable raw material and
Technological parameter with specified raw material component, the NS6082 alloy T64 state Extrusion Process of Aluminum Alloy Profile direction room temperature tensile mechanics produced
Performance meets following index request：Tensile strength exists in more than 300MPa, yield strength in more than 260MPa, elongation after fracture
More than 10%；The cavity aluminium section bar of extrusion, after quasistatic compression is tested, no apparent imperfection crushes total cross-section sample,
And surface laps deformation is uniform, cracks length≤15mm or flawless.
According to another aspect of the present invention, a kind of above-mentioned car crass energy absorbing component aluminium section bar production work is provided
The aluminium section bar of skill production.
Not only intensity is high, but also compression performance is preferable for the aluminium section bar obtained by using above-mentioned production technology.
Preferably, aluminium section bar finished product tensile mechanical properties meet following index request：Tensile strength is bent in more than 300MPa
Intensity is taken in more than 260MPa, elongation after fracture is more than 10%；The cavity aluminium section bar of extrusion, total cross-section sample is through quasi-static
After compression test, no apparent imperfection crushes, and surface laps deformation is uniform, cracks length≤15mm or flawless.
In order to further appreciate that the present invention, with reference to specific embodiment and comparative example the method for the present invention and effect are done into
One step is described in detail.The following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.In embodiment
The person that is not specified actual conditions, the condition suggested according to normal condition or manufacturer carry out.Production is not specified in agents useful for same or instrument
Manufacturer person is the conventional products that can be obtained by commercially available purchase.
Wherein embodiment and comparative example is by taking NS6082 alloys as an example.
Embodiment 1
A kind of car crass energy absorbing component production process of aluminium section, includes the following steps：
(1) homogenizing annealing is handled：Alloy pig homogenizing annealing processing holding temperature is made of NS6082 alloy materials
550 DEG C, soaking time is 10 hours, and alloy pig alloying component used is included by weight percentage：
Si：0.89%, Fe：0.32%, Cu：0.07%, Mn：0.63%, Mg：0.92%, Cr：0.11%, Zn：
0.17%, Ti：0.06%, Nb：0.04%, V：0.03%, surplus is Al and inevitable impurity.
(2) it cools down and squeezes：Alloy pig is cooled to 520 ± 2 DEG C, extrusion cylinder is then sent directly into and is squeezed, make it
By producing " day " font cavity aluminium section bar after mold, appearance and size is 60 × 40mm, wall thickness 3mm；Wherein, extrusion cylinder temperature
It is 438 DEG C to spend, and mold temperature is 485 DEG C, extruded velocity 7m/min；
(3) press quenching cooling treatment：Water spray online and strong wind cooling quenching, cooling are carried out to the cavity aluminium section bar of extrusion
Area's entrance to extruder outlet distance is 0.85 meter, and quenching cooling rate is 5.5 DEG C/s；
(4) straightening pull：Aluminium section bar carries out stretch processing, extensibility 1.1% after cooling；
(5) ageing treatment：To the aluminium section bar after stretching when workshop parks 40 hours progress natures under room temperature
Effect processing then carries out artificial aging processing, and the first Stages of Aging holding temperature is 100 DEG C, and soaking time is 3.5 hours, the
Two Stages of Aging holding temperatures are 150 DEG C, and soaking time is 12 hours.
Embodiment 2
A kind of car crass energy absorbing component production process of aluminium section, includes the following steps：
(1) homogenizing annealing is handled：Alloy pig homogenizing annealing processing holding temperature is made of NS6082 alloy materials
565 DEG C, soaking time is 8 hours, and alloy pig alloying component used is included by weight percentage：
Si：0.95%, Fe：0.28%, Cu：0.06%, Mn：0.67%, Mg：0.97%, Cr：0.08%, Zn：
0.18%, Ti：0.05%, Nb：0.05%, V：0.05%, surplus is Al and inevitable impurity.
(2) it cools down and squeezes：Alloy pig is cooled to 505 ± 2 DEG C, extrusion cylinder is then sent directly into and is squeezed, make it
By producing " day " font cavity aluminium section bar after mold, appearance and size is 60 × 40mm, wall thickness 3mm；Wherein, extrusion cylinder temperature
It is 420 DEG C to spend, and mold temperature is 465 DEG C, extruded velocity 4m/min；
(3) press quenching cooling treatment：Water spray online and strong wind cooling quenching, cooling are carried out to the cavity aluminium section bar of extrusion
Area's entrance to extruder outlet distance is 1.40 meters, and quenching cooling rate is 6 DEG C/s；
(4) straightening pull：Aluminium section bar carries out stretch processing, extensibility 0.9% after cooling；
(5) ageing treatment：To the aluminium section bar after stretching when workshop parks 60 hours progress natures under room temperature
Effect processing, then carry out artificial aging processing, the first Stages of Aging holding temperature be 120 DEG C, soaking time be 2 hours, second
Stages of Aging holding temperature is 170 DEG C, and soaking time is 8 hours.
Embodiment 3
A kind of car crass energy absorbing component production process of aluminium section, includes the following steps：
(1) homogenizing annealing is handled：Alloy pig homogenizing annealing processing holding temperature is made of NS6082 alloy materials
580 DEG C, soaking time is 5.5 hours, and alloy pig alloying component used is included by weight percentage：
Si：1.12%, Fe：0.41%, Cu：0.05%, Mn：0.55%, Mg：1.08%, Cr：0.13%, Zn：
0.18%, Ti：0.07%, Nb：0.03%, V：0.06%, surplus is Al and inevitable impurity.
(2) it cools down and squeezes：Alloy pig is cooled to 495 ± 2 DEG C, extrusion cylinder is then sent directly into and is squeezed, make it
By producing " day " font cavity aluminium section bar after mold, appearance and size is 60 × 40mm, wall thickness 3mm；Wherein, extrusion cylinder temperature
It is 445 DEG C to spend, and mold temperature is 475 DEG C, extruded velocity 10m/min；
(3) press quenching cooling treatment：Online standing wave water hardening, cooling zone entrance are carried out to the cavity aluminium section bar of extrusion
It it is 1.20 meters to extruder outlet distance, quenching cooling rate is 6.5 DEG C/s；
(4) straightening pull：Aluminium section bar carries out stretch processing, extensibility 1.4% after cooling；
(5) ageing treatment：To the aluminium section bar after stretching when workshop parks 50 hours progress natures under room temperature
Effect processing then carries out artificial aging processing, and the first Stages of Aging holding temperature is 110 DEG C, and soaking time is 2.5 hours, the
Two Stages of Aging holding temperatures are 160 DEG C, and soaking time is 10 hours.
Embodiment 4
A kind of car crass energy absorbing component production process of aluminium section, includes the following steps：
(1) homogenizing annealing is handled：Alloy pig homogenizing annealing processing holding temperature is made of NS6082 alloy materials
560 DEG C, soaking time is 10 hours, and alloy pig alloying component used is included by weight percentage：
Si：1.0%, Fe：0.16%, Cu：0.05%, Mn：0.5%, Mg：1.02%, Cr：0.13%, Zn：0.17%,
Ti：0.05%, Nb：0.04%, V：0.04%, surplus is Al and inevitable impurity.
(2) it cools down and squeezes：Alloy pig is cooled to 510 ± 2 DEG C, extrusion cylinder is then sent directly into and is squeezed, make it
By producing " day " font cavity aluminium section bar after mold, appearance and size is 60 × 40mm, wall thickness 3mm；Wherein, extrusion cylinder temperature
It is 440 DEG C to spend, and mold temperature is 480 DEG C, extruded velocity 6m/min；
(3) press quenching cooling treatment：Water spray online and strong wind cooling quenching, cooling are carried out to the cavity aluminium section bar of extrusion
Area's entrance to extruder outlet distance is 0.8 meter, and quenching cooling rate is 4 DEG C/s；
(4) straightening pull：Aluminium section bar carries out stretch processing, extensibility 0.5% after cooling；
(5) ageing treatment：To the aluminium section bar after stretching when workshop parks 30 hours progress natures under room temperature
Effect processing, then carry out artificial aging processing, the first Stages of Aging holding temperature be 105 DEG C, soaking time be 3 hours, second
Stages of Aging holding temperature is 155 DEG C, and soaking time is 11 hours.
Embodiment 5
A kind of car crass energy absorbing component production process of aluminium section, includes the following steps：
(1) homogenizing annealing is handled：Alloy pig homogenizing annealing processing holding temperature is made of NS6082 alloy materials
570 DEG C, soaking time is 5 hours, and alloy pig alloying component used is included by weight percentage：
Si：1.2%, Fe：0.18%, Cu：0.05%, Mn：0.91%, Mg：0.75%, Cr：0.09%, Zn：0.18%,
Ti：0.04%, Nb：0.04%, V：0.05%, surplus is Al and inevitable impurity.
(2) it cools down and squeezes：Alloy pig is cooled to 510 ± 2 DEG C, extrusion cylinder is then sent directly into and is squeezed, make it
By producing " day " font cavity aluminium section bar after mold, appearance and size is 60 × 40mm, wall thickness 3mm；Wherein, extrusion cylinder temperature
It is 400 DEG C to spend, and mold temperature is 460 DEG C, extruded velocity 2m/min；
(3) press quenching cooling treatment：Water spray online and strong wind cooling quenching, cooling are carried out to the cavity aluminium section bar of extrusion
Area's entrance to extruder outlet distance is 1.5 meters, and quenching cooling rate is 5 DEG C/s；
(4) straightening pull：Aluminium section bar carries out stretch processing, extensibility 1.3% after cooling；
(5) ageing treatment：To the aluminium section bar after stretching when workshop parks 35 hours progress natures under room temperature
Effect processing, then carry out artificial aging processing, the first Stages of Aging holding temperature be 115 DEG C, soaking time be 2 hours, second
Stages of Aging holding temperature is 170 DEG C, and soaking time is 9 hours.
Embodiment 6
A kind of car crass energy absorbing component production process of aluminium section, includes the following steps：
(1) homogenizing annealing is handled：Alloy pig homogenizing annealing processing holding temperature is made of NS6082 alloy materials
560 DEG C, soaking time is 7 hours, and alloy pig alloying component used is included by weight percentage：
Si：1.18%, Fe：0.21%, Cu：0.06%, Mn：0.88%, Mg：1.05%, Cr：0.11%, Zn：
0.17%, Ti：0.05%, Nb：0.05%, V：0.04%, surplus is Al and inevitable impurity.
(2) it cools down and squeezes：Alloy pig is cooled to 500 ± 2 DEG C, extrusion cylinder is then sent directly into and is squeezed, make it
By producing " day " font cavity aluminium section bar after mold, appearance and size is 60 × 40mm, wall thickness 3mm；Wherein, extrusion cylinder temperature
It is 450 DEG C to spend, and mold temperature is 490 DEG C, extruded velocity 2.5m/min；
(3) press quenching cooling treatment：Water spray online and strong wind cooling quenching, cooling are carried out to the cavity aluminium section bar of extrusion
Area's entrance to extruder outlet distance is 1.20 meters, and quenching cooling rate is 5.5 DEG C/s；
(4) straightening pull：Aluminium section bar carries out stretch processing, extensibility 0.8% after cooling；
(5) ageing treatment：To the aluminium section bar after stretching when workshop parks 40 hours progress natures under room temperature
Effect processing then carries out artificial aging processing, and the first Stages of Aging holding temperature is 120 DEG C, and soaking time is 2.5 hours, the
Two Stages of Aging holding temperatures are 165 DEG C, and soaking time is 9 hours.
Comparative example 1
Homogenizing annealing processing heat preservation in a kind of car crass energy absorbing component production process of aluminium section, wherein step (1)
Temperature is 530 DEG C, and alloying component and remaining process conditions are same as Example 4.
Comparative example 2
Homogenizing annealing processing heat preservation in a kind of car crass energy absorbing component production process of aluminium section, wherein step (1)
Temperature is 600 DEG C, and alloying component and remaining process conditions are same as Example 5.
Comparative example 3
Alloy pig alloying component used in a kind of car crass energy absorbing component production process of aluminium section, wherein step (1)
Including by weight percentage：
Si：0.75%, Fe：0.16%, Cu：0.05%, Mn：0.43%, Mg：0.63%, Cr：0.13%, Zn：
0.17%, Ti：0.05%, Nb：0.04%, V：0.04%, surplus is Al and inevitable impurity.
Remaining process conditions is same as Example 4.
Comparative example 4
Alloy pig alloying component used in a kind of car crass energy absorbing component production process of aluminium section, wherein step (1)
Including by weight percentage：
Si：1.26%, Fe：0.18%, Cu：0.05%, Mn：0.91%, Mg：1.15%, Cr：0.09%, Zn：
0.18%, Ti：0.04%, Nb：0.04%, V：0.05%, surplus is Al and inevitable impurity.
Remaining process conditions is same as Example 5.
Comparative example 5
Alloy pig alloying component used in a kind of car crass energy absorbing component production process of aluminium section, wherein step (1)
Including by weight percentage：
Si：1.28%, Fe：0.21%, Cu：0.06%, Mn：0.88%, Mg：1.05%, Cr：0.11%, Zn：
0.17%, Ti：0.05%, Nb：0.05%, V：0.04%, surplus is Al and inevitable impurity.
Remaining process conditions is same as Example 6.
Comparative example 6
Alloy pig is cooled to 550 in a kind of car crass energy absorbing component production process of aluminium section, wherein step (2) ±
2 DEG C, alloying component and remaining process conditions are same as Example 5.
Comparative example 7
Alloy pig is cooled to 480 in a kind of car crass energy absorbing component production process of aluminium section, wherein step (2) ±
2 DEG C, alloying component and remaining process conditions are same as Example 6.
Comparative example 8
A kind of car crass energy absorbing component production process of aluminium section, wherein step (5) is exist to the aluminium section bar after stretching
Workshop is parked under room temperature carries out natural aging treatment for 12 hours, then carries out artificial aging processing, timeliness heat preservation temperature
It is 175 DEG C to spend, and soaking time is 8 hours, and alloying component and remaining process conditions are same as Example 4.
Comparative example 9
A kind of car crass energy absorbing component production process of aluminium section, wherein step (5) is exist to the aluminium section bar after stretching
Workshop is parked under room temperature carries out natural aging treatment for 40 hours, then carries out artificial aging processing, holding temperature is
150 DEG C, soaking time is 18 hours, and alloying component and remaining process conditions are same as Example 5.
Comparative example 10
A kind of car crass energy absorbing component production process of aluminium section, wherein step (5) is exist to the aluminium section bar after stretching
Workshop is parked under room temperature carries out natural aging treatment for 40 hours, then carries out artificial aging processing, the first timeliness rank
Section holding temperature is 90 DEG C, and soaking time is 2.5 hours, and the second Stages of Aging holding temperature is 180 DEG C, and soaking time is small for 9
When, alloying component and remaining process conditions are same as Example 6.
Test example
Room temperature tensile mechanical property and compression performance experiment are carried out to finished product sampling obtained by above example and comparative example.
For the NS6082 alloy T64 state aluminium section bars that above example and comparative example produce, it is 300mm's to cut length
Total cross-section sample, two sawing face depth of parallelisms of sample are more than 1:0.0002mm/mm.Sample is subjected to quasistatic compression at room temperature
Experiment, Soft reduction rate 50mm/min, pressure height are 150mm.Overall deformation situation is observed, folded deformation situation and crackle are long
Degree.
For the NS6082 alloy T64 state aluminium section bars that above example and comparative example produce, according to GB/T16865-
2013《Deform aluminium, magnesium and its alloy fabricated product tension test sample and method》It carries out cutting direction of extrusion stretching mechanical
Energy sample, and tested at ambient temperature.
Above example and comparative example room temperature tensile mechanical property test result and compression performance result see the table below shown in 1.
Table 1
As can be seen from Table 1, the NS6082 alloy T64 states produced through alloying component of the present invention proportioning and process
Extrusion Process of Aluminum Alloy Profile direction room temperature tensile mechanical property meets following index request：Tensile strength is in more than 300MPa, yield strength
In more than 260MPa, elongation after fracture is more than 10%；The cavity aluminium section bar of extrusion, total cross-section sample are tried through quasistatic compression
After testing, no apparent imperfection crushes, and surface laps deformation is uniform, cracks length≤15mm or flawless.
It can be seen that is produced using alloying component of the present invention proportioning or technological parameter from the result of the test of embodiment
NS6082 alloy T64 states " day " font cavity aluminium section bar, room temperature tensile mechanical property and compression performance can reach simultaneously
Desired value.It can be seen that compared with existing professional standard numerical value, produced using alloying component of the present invention proportioning or technological parameter
The room temperature tensile mechanical property and compression performance of NS6082 alloy T64 state cavity aluminium section bars can be largely increased.
Compared with Example 4, homogenizing annealing processing holding temperature is relatively low in step (1) for comparative example 1, comparative example 2 and reality
It applies example 5 to compare, homogenizing annealing processing holding temperature is higher in step (1), not in 550-580 DEG C of preferred scope, obtains
The tensile strength and yield strength of aluminium section bar are declined.Comparative example 3 compared with Example 4, comparative example 4 compared with Example 5,
Comparative example 5 compared with Example 6, al alloy component not in the preferred range, the stretching mechanical of obtained aluminium section bar
It can be declined with compression performance.Comparative example 6 compared with Example 5, comparative example 7 compared with Example 6, ingot casting in step (2)
Not within the scope of the present invention, the tensile mechanical properties and compression performance of obtained aluminium section bar decline postcooling temperature.Comparative example 8 with
Embodiment 4 is compared, and natural aging time is short, and uses level-one artificial aging, the tensile mechanical properties and pressure of obtained aluminium section bar
Contracting performance is bad；Comparative example 9 compared with Example 5, using level-one artificial aging, embodiment 10 compared with Example 6, two level people
Working hour effect parameter is different from the present invention, and the tensile mechanical properties and compression performance of obtained aluminium section bar are also be not as good as embodiment.From
The result of the test of comparative example, which can be seen that, does not use the NS6082 that alloying component of the present invention matches or technological parameter produces to close
Golden T64 states aluminium section bar, room temperature tensile mechanical property and compression performance can not reach or be unable to reach desired value simultaneously.By
This is not as it can be seen that use the NS6082 alloy T64 state cavity aluminium profiles that alloying component of the present invention matches or technological parameter produces
The room temperature tensile mechanical property and compression performance of material can not be effectively improved and be promoted.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of car crass energy absorbing component production process of aluminium section, which is characterized in that include the following steps：
Aluminium alloy ingots carries out homogenizing annealing processing, extruding, quenching treatment, stretch processing and ageing treatment successively, obtains automobile
Collision energy-absorbing component aluminium section bar；
Wherein, aluminium alloy ingots is cooled to 490-525 DEG C, then squeezed after homogenizing annealing processing；
Ageing treatment includes first natural aging treatment and carries out two level artificial aging processing again, and the natural aging treatment time is 30-
60h, the first artificial aging stage holding temperature are 100-120 DEG C, soaking time 2-3.5h, the heat preservation of the second artificial aging stage
Temperature is 150-170 DEG C, soaking time 8-12h.
2. car crass energy absorbing component production process of aluminium section described in accordance with the claim 1, which is characterized in that homogenization is moved back
Fire processing holding temperature for 550-580 DEG C and/or, soaking time 5-10h；
Preferably, homogenizing annealing processing holding temperature for 560-580 DEG C and/or, soaking time 5-9h；
It is further preferred that homogenizing annealing processing holding temperature for 560-580 DEG C and/or, soaking time 5-8h.
3. car crass energy absorbing component production process of aluminium section described in accordance with the claim 1, which is characterized in that aluminium alloy ingots
Cooling using natural cooling or fan coolling and/or, after control cooling aluminium alloy ingots surface and internal temperature difference 2 DEG C with
It is interior；
Preferably, aluminium alloy ingots is cooled to 490-525 DEG C, is then sent directly into pressurizing unit and is squeezed, enable aluminum alloy to ingot
By producing cavity aluminium section bar after extrusion die；
Preferably, pressurizing unit heating temperature for 400-450 DEG C and/or, extrusion die heating temperature for 460-490 DEG C and/
Or, aluminium section bar extruded velocity is 3-20m/min.
4. according to claim 1-3 any one of them car crass energy absorbing component production process of aluminium section, which is characterized in that
Quenching treatment is on-line cooling quenching treatment；
Preferably, using wind, water mist, water or liquid nitrogen medium during on-line cooling quenching treatment, it is 5-8 to make aluminium section bar cooldown rate
DEG C/s, it is 0.8-1.5m that pressurizing unit, which is exported to quenching cooling zone inlet distance,.
5. according to claim 1-3 any one of them car crass energy absorbing component production process of aluminium section, which is characterized in that
Stretch processing is is stretched along aluminium section bar length direction, extensibility 0.3-3%, preferably 0.5-2%, further preferably
0.8-1.5%.
6. according to claim 1-3 any one of them car crass energy absorbing component production process of aluminium section, which is characterized in that
The natural aging treatment time is 40-60h, preferably 50-60h；And/or
First artificial aging stage holding temperature is 100-110 DEG C, soaking time 3-3.5h, the heat preservation of the second artificial aging stage
Temperature is 150-160 DEG C, soaking time 10-12h.
7. according to claim 1-3 any one of them car crass energy absorbing component production process of aluminium section, which is characterized in that
The aluminium alloy ingots includes the following ingredient of weight percent：Si 0.85-1.2%, Fe 0.15-0.45%, Cu≤0.1%,
Mn 0.5-1.0%, Mg 0.7-1.1%, Cr≤0.15%, Zn≤0.2%, Ti 0.04-0.1%, Nb and V total amount≤
0.1%, surplus is Al and impurity.
8. according to the car crass energy absorbing component production process of aluminium section described in claim 7, which is characterized in that the aluminium closes
Ingot includes the following ingredient of weight percent：Si 0.85-1.2%, Fe 0.15-0.45%, Cu≤0.1%, Mn 0.5-
0.7%, Mg 0.7-1.1%, Cr≤0.15%, Zn 0.15-0.2%, Ti 0.04-0.08%, Nb and V total amount≤0.1%,
Surplus is Al and impurity；
Preferably, the aluminium alloy ingots includes the following ingredient of weight percent：Si 0.85-1%, Fe 0.2-0.35%, Cu
≤ 0.1%, Mn 0.6-0.7%, Mg 0.8-1%, Cr≤0.15%, Zn 0.15-0.2%, Ti 0.06-0.08%, Nb and V
Total amount≤0.1%, surplus are Al and impurity.
9. according to claim 1-3 any one of them car crass energy absorbing component production process of aluminium section, which is characterized in that
Include the following steps：
(a) homogenizing annealing is handled：Aluminium alloy ingots made of NS6082 alloy materials is subjected to homogenizing annealing processing, heat preservation temperature
It is 550-580 DEG C to spend, soaking time 5-10h；
The aluminium alloy ingots includes the following ingredient of weight percent：Si 0.85-1.2%, Fe 0.15-0.45%, Cu≤
0.1%, Mn 0.5-1.0%, Mg 0.7-1.1%, Cr≤0.15%, Zn≤0.2%, Ti 0.04-0.1%, Nb and V total amount
≤ 0.1%, surplus is Al and impurity；
(b) it cools down and squeezes：Aluminium alloy ingots is cooled to 490-525 DEG C, pressurizing unit is then sent directly into and is squeezed, make aluminium
Alloy pig is by producing cavity aluminium section bar after extrusion die；Wherein, pressurizing unit heating temperature is 400-450 DEG C, extrusion die
It is 460-490 DEG C to have heating temperature, and aluminium section bar extruded velocity is 3-20m/min；
(c) press quenching cooling treatment：Water spray online and strong wind cooling quenching are carried out to the cavity aluminium section bar of extrusion, cooling zone enters
Mouth to pressurizing unit outlet distance is 0.8-1.5m, and quenching cooling rate is 5-8 DEG C/s；
(d) straightening pull：Aluminium section bar carries out stretch processing, extensibility 0.3-3% after cooling；
(e) ageing treatment：30-60h is parked under room temperature to the aluminium section bar after stretching in workshop to carry out at natrual ageing
Reason then carries out two level artificial aging processing, and the first artificial aging stage holding temperature is 100-120 DEG C, soaking time 2-
3.5h, the second artificial aging stage holding temperature are 150-170 DEG C, soaking time 8-12h.
10. a kind of aluminium profiles that claim 1-9 any one of them car crass energy absorbing components are produced with production process of aluminium section
Material.
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