CN105543573B - A kind of car door is with 1100 H24 aluminium alloy plates - Google Patents
A kind of car door is with 1100 H24 aluminium alloy plates Download PDFInfo
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- CN105543573B CN105543573B CN201510959807.2A CN201510959807A CN105543573B CN 105543573 B CN105543573 B CN 105543573B CN 201510959807 A CN201510959807 A CN 201510959807A CN 105543573 B CN105543573 B CN 105543573B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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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Abstract
The invention provides a kind of 1100 H24 car door aluminum alloy sheets and strips and preparation method thereof, this method comprises the following steps：Founding, sawing, milling face, homogenization heat treatment, hot rolling, blank anneal, cold rolling, cleaning, finished products.The mass percent of the aluminum alloy sheets and strips chemical composition is：Si is that 0.35 ~ 0.40%, Fe is that 0.45 ~ 0.50%, Cu is 0.15 ~ 0.20%, Mn ＜ 0.05%, Mg ＜ 0.05%, Cr ＜ 0.05%, and Zn ＜ 0.05%, Ti is 0.02 ~ 0.025%, and surplus is aluminium.The production method of the present invention both can guarantee that the 1100 preferable stability of H24 door for coach aluminum alloy sheets and strips mechanical properties, and its processing forming, high yield rate are also substantially increased in punching course.Substantially increase production efficiency.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, and in particular to a kind of door for coach 1100-H24 aluminium alloy plates and its preparation
Method.
Background technology
A large amount of with automobile use, in order to mitigate weight, improve in antiseptic property and machine-shaping property, automobile industry
The consumption of car aluminum plate gradually increases.Automotive light weight technology is an important trend of development of automobile, by using lightweight
Material replaces traditional ferrous materials, can mitigate the quality of automobile, but automotive safety laws and regulations requirement we mitigating matter
The active safety and passive safety of automobile are also improved while amount.Aluminium alloy is as important lightweighting materials, and its is close
Spend for the 1/3 of steel, typical aluminium alloy part substitution weight loss effect of steel can reach 30 ~ 40%, secondary loss of weight effect
Fruit then can further improve to 50%, and the application of deformed aluminum alloy plate, which is also helped, in addition meets wanting for automotive safety regulation
Ask, injury of the secondary collision to pedestrian can be significantly reduced, requirement of the collision to the protection regulation of pedestrian can be met.
It is door for coach working environment very severe, complicated, this material for requiring to use possess certain tensile strength,
Yield strength, elongation and shock resistance, in addition it is also necessary to which car has preferable machine-shaping property and anti-fatigue performance.Use
Common aluminium sheet, it is difficult to meet door for coach material resistant tensile strength, yield strength, elongation percentage, the requirement of machine-shaping property.
1100 alloys are widely used one kind in commercial-purity aluminium 1XXX systems alloy, and the series alloy product has modeling
Property good, easy processing, reflectivity be strong, good corrosion resistance, with good brightness and finish.1100-H24 aluminium strip sheet materials, tool
There are excellent ductility, mouldability, weldability, be widely used in the product of deep draw.Can not during conventional mill 1100 alloy of production
Ensure finishing temperature and hot rolling material performance, finished product internal grain structure is unable to reach perfect condition, influences Product processing mouldability
Can, and traditional chemical composition proportioning is easily caused easy to crack, influence production efficiency during product punching press, yield rate is low.Common
Annealed after 1100-H24 aluminium alloys, cold rolling finished product, end properties are unstable, it is difficult to reach car door aluminium sheet to performance
With the requirement of hardness.Generally for the intensity and stability for reaching requirement, H24 process routes are replaced frequently with H14, at present
Technological process conventional 1100-H14 is：Founding-sawing-milling face-heating-hot rolling-cold rolling-cleaning-intermediate annealing-cold rolling, should
Method is while desired strength is reached, elongation percentage does not reach requirement, causes the pliable cracking of product；Improving the same of elongation percentage
When, intensity is unable to reach requirement again with hardness, it is impossible to meet the requirement of car door impact resistance.
The content of the invention
The invention provides a kind of door for coach 1100-H24 aluminium alloy plates and its production method, given birth to using the aluminium alloy plate
The door for coach of production has preferable tensile strength, yield strength, elongation percentage and processing forming, solves aluminium of the prior art
Yield rate in the production of alloy door for coach aluminium sheet because the inner clamps quantity of slag is big, caused by uneven microstructure is low, and stamping products are processed into
The problem of type performance is unstable, improves the production efficiency of online punching press.
In order to solve the above problems, the present invention uses following technical scheme
A kind of car door 1100-H24 aluminium alloy plates, the mass percent of the chemical composition of the aluminum alloy plate materials is：Si is
0.35 ~ 0.40%, Fe are that 0.45 ~ 0.50%, Cu is 0.15 ~ 0.20%, Mn ＜ 0.05%, Mg ＜ 0.05%, Cr ＜ 0.05%, Zn ＜
0.05%, Ti are 0.02 ~ 0.025%, and surplus is aluminium.
The production method of car door 1100-H24 aluminium alloy plates, production stage is as follows：
（1）Aluminium ingot is added in smelting furnace, in 720 ~ 750 DEG C of smelting temperature, refining temperature is under the conditions of 720 ~ 750 DEG C
To aluminium ingot solution, the aluminium alloy solution that Si, Fe, Cu obtain meeting the aluminium alloy plate chemical composition is then added, in casting temperature
It is that aluminium alloy cast ingot is cast out by aluminium alloy solution under the conditions of 45 ~ 50mm/min for 715 ~ 730 DEG C, casting speed；
（2）Sawing, milling face；
（3）Homogenization heat treatment is carried out to the ingot casting behind milling face；
（4）Hot rolling：To passing through step（3）The aluminium alloy cast ingot of homogenization heat treatment carries out hot rolling, and is entered using emulsion
Row lubrication and cooling obtain aluminum alloy coiled materials；
Described hot rolling includes hot roughing and hot finishing, and described hot roughing is in 510 ~ 530 DEG C of coggings, by 15-17 roads
It is secondary, the blank that thickness is 30 ~ 45mm is rolling to, middle base temperature is 390 ~ 450 DEG C, hot finishing, hot finishing warp are carried out after roughing
Continuous 4 frame rolling is crossed, is 7.0 ~ 7.5mm, 270 DEG C ~ 300 DEG C of temperature after hot finishing to thickness；In order to ensure band during hot finishing
Brush roll used in material surface quality cleans speed with water for 400 ~ 650r/min；
（5）Blank anneal is carried out to the coiled material after hot rolling, blank anneal temperature is 440 ~ 480 DEG C of furnace gas constant temperature, protected
Temperature 12 ~ 16 hours, then 400 ~ 430 DEG C of converter gas constant temperature insulation 1.5 ~ 2.5 hours；
（6）To passing through step（5）Aluminum alloy coiled materials after the annealing carry out being cold-rolled to finished product thickness；
（7）Cleaning：Using the online caustic dip of stretch bending-straightening machine；
（8）To step（7）Finished product aluminum alloy coiled materials after cleaning are made annealing treatment, and annealing furnace gas temperature is 380 ± 10
DEG C, metal temperature reach 220 ~ 250 DEG C, then 280 ~ 320 DEG C of converter gas temperature is incubated 1.5 ~ 2.5 hours；
（9）To step（8）Coiled material after annealing, carries out online slice packaging, that is, obtains product.
The production method of described car door aluminium alloy plate, step（1）The thickness of described aluminium alloy cast ingot be 600mm,
Width is that 1350mm, length are 6300mm；Step（2）Described milling face is to distinguish milling to the big face of ingot casting and facet using milling machine
Cut, big face one side milling Mian Liang≤20mm, facet one side milling Mian Liang≤10mm.
The production method of described car door aluminium alloy plate, step（3）The temperature of described homogenization heat treatment for 550 ~
570 DEG C, soaking time is 8 ~ 12 hours, and temperature when coming out of the stove is 510 ~ 530 DEG C.
The production method of described car door aluminium alloy plate, step（4）The injection pressure of emulsion is during described hot roughing
55-60 DEG C of 0.1 ~ 0.3 MPa, temperature, during hot finishing the injection pressure of emulsion be 0.2 ~ 0.45MPa, 55-60 DEG C of temperature, it is described
The concentration of emulsion is 3 ~ 8%.In order to ensure that surface does not have emulsion to bring into, emulsion is caused to corrode, hot roughing and hot finishing are taken
The measure of compressed air purging strip surface, compressed air pressure is 0.2 ~ 0.5Mpa.
The production method of described car door aluminium alloy plate, step（6）It is described it is cold rolling be, by 2 ~ 3 passages, to be cold-rolled to
Finished product thickness, its thickness is 2.5 ~ 3.2mm, and total working modulus is 60 ~ 64.28%.
The production method of described car door aluminium alloy plate, step（7）Described alkali lye is NaOH solution, and its concentration is 1%
~ 5%, temperature control is at 75 DEG C ~ 85 DEG C.
In step（1）In described casting process, using casting machine upgrading automatic speed regulation system.When being cooled down in casting process
The casting water temperature of utilization is 25 ~ 35 DEG C, casting hydraulic pressure is 0.2 ~ 0.5kg/cm2, casting water-carrying capacity be 110 ~ 230m3/h。
Compared with prior art, the present invention has following positive beneficial effect：
（1）Combination is optimized to Fe, Si and Cu in chemical composition in preparation process in the present invention, achieves preferably
Effect, Fe and Si being solid-solution in matrix on a small quantity as alloying element play certain solution strengthening effect, prevent ingot casting
The appearance of cracking and block primary silicon is produced during casting, another aspect automotive light weight technology also requires that sheet material has higher baking hard
Change performance, so that ensure that the sheet metal component after punching press spray painting has high dent resistance, and raising Si suitably degree is not only
Baking and hardening performance can be improved, its pressure mottling resistance can also be improved, the present invention using Si content, with reference to a certain amount of Fe and
Cu is that properties of product are greatly improved, and appropriate Cu has certain invigoration effect, it is possible to increase the decay resistance of aluminium sheet；
（2）The present invention takes blank anneal technique in preparation process, and this is by the wrought aluminium alloy after plastic working half
The machining deformation tissue produced when finished product is because of plastic working, is completely eliminated after high annealing, by Recovery and recrystallization two
Individual process, so that eliminating the aluminium alloy caused by plastic working hardens problem, improves plasticity, can continue to carry out cold working；
（3）The present invention uses hot roughing in 510 ~ 530 DEG C of coggings in preparation process, is after 15 ~ 19 passes
Finish rolling provides the thick middle blanks of 30 ~ 45mm, and this is the second phase compound is controlled using proper temperature and drafts uniform
It is tiny to separate out and ensure that cast sturcture fully crushes, be conducive to improving surface and interior tissue, reduce because of cast sturcture's difference
Cause the aberration striped after finished anode oxidation, the blank finishing temperature control of hot continuous rolling production can make at 270 DEG C ~ 300 DEG C
Product final performance is stable, reduces product punching press and 90 degree of cracking during bending problems；
（4）The present invention can effectively reduce inhomogeneous cooling caused by casting speed is fluctuated, chemical composition aggregation, aluminium slag brings into
Etc. the appearance of defect, improve the interior tissue of product, it is ensured that interiors of products is produced without slag inclusion situation.This can not only be greatly improved
The yield rate of product, moreover it is possible to meet the requirement to processing forming and fatigue resistance in door for coach aluminium sheet use；
（5）The present invention is controlled by hot rolling emulsion Stress control and brush roll rotating speed, it is ensured that hot rolling blank has good
Surface quality, meets the demand of 1XXX systems product, any surface finish particularly required by the high value added product such as high class appearance material,
Without wipe scuffings, roll marks, nonmetallic press-in, product surface uniformly, dense structure.
Specific embodiment
The present invention is described in more details below by specific embodiment, but protection scope of the present invention is not
It is limited to following examples.
Embodiment 1
A kind of car door 1100-H24 aluminium alloy plates, the chemical composition mass percent of the aluminum alloy plate materials is：Si
0.350%, Fe 0.477%, Cu 0.176%, Mn 0.007%, Mg 0.003%, Cr 0.002%, Zn 0.004%, Ti 0.020%,
Remaining is Al.
The car door production method of 1100-H24 aluminium alloy plates, comprises the following steps：
（1）Melting and casting：Aluminium ingot is added in smelting furnace, in 720 ~ 750 DEG C of smelting temperature, refining temperature is 720 ~ 750
Aluminium ingot solution is obtained under the conditions of DEG C, then add Si, Fe, Cu obtain meeting the aluminum alloy plate materials chemical composition aluminium alloy it is molten
Liquid, casting temperature be 715 ~ 730 DEG C, casting speed be to cast out thickness by aluminium alloy solution under the conditions of 45 ~ 50mm/min to be
600mm, width are 1350mm aluminium alloy cast ingot；
（2）Sawing, milling face：Milling is distinguished the big face of ingot casting and facet using milling machine, big face one side milling Mian Liang≤20mm,
Surface is smooth behind facet one side milling Mian Liang≤10mm, milling face, without obvious knife mark；
（3）Homogenization heat treatment is carried out to the ingot casting behind milling face：The temperature of evenly heating processing is 550 ~ 570 DEG C, during insulation
Between be 8 hours, temperature when coming out of the stove is 510 DEG C；
（4）Hot rolling：To passing through step（3）The aluminium alloy cast ingot of homogenization heat treatment carries out hot roughing and hot finishing, and makes
It is lubricated with emulsion and cooling obtains aluminum alloy coiled materials, the concentration of emulsion is 3%, and brush roll cleans speed with water for 400r/min；
After hot 510 DEG C of coggings of roughing, by the rolling of 17 passages, roughing by thickness for 600mm ingot rolling extremely
Thickness is 36mm, and the temperature of middle blank is 426 DEG C, then carries out hot finishing, by 4 frame continuous rollings, obtaining thickness is
7.5mm aluminum alloy coiled materials, finishing temperature is 285 DEG C；Wherein hot roughing when emulsion injection pressure be 0.3MPa, temperature
55 DEG C, emulsion pressure during hot finishing is 0.3MPa, 57 DEG C of temperature；It is 0.3Mpa compressed air to band to use pressure
Surface is purged；
（5）Blank anneal：To passing through step（4）Coiled material after hot rolling carries out blank anneal, and blank anneal temperature is furnace gas
440 DEG C of constant temperature, insulation 16 hours, then 420 DEG C of converter gas constant temperature insulation 2 hours；
（6）It is cold rolling：To passing through step（5）Aluminum alloy coiled materials after the annealing carry out that continuous 2 passage is cold rolling to be machined to
Finished product thickness is 2.97mm aluminum alloy coiled materials；
（7）Cleaning：Using stretch bending-straightening machine to passing through step（6）It is clear that aluminum alloy coiled materials after cold rolling carry out online alkali lye
Wash, alkali lye is NaOH solution of the concentration 1%, alkali liquid temperature is controlled at 75 DEG C ~ 85 DEG C；
（8）Finished products：To step（7）Obtained finished product aluminum alloy coiled materials are made annealing treatment, and annealing temperature is furnace gas
390 DEG C of constant temperature, metal temperature reaches 240 DEG C, then turns 300 DEG C of constant temperature furnace gas constant temperature and is incubated 2 hours；
（9）To step（8）Aluminum alloy coiled materials after finished products processing, carry out online slice packaging, that is, obtain product.
According to the above method, it is respectively that two, finished product are rolled up in experiment volume one and experiment to be repeated twice and produce the product prepared
Performance is as follows：
There are the phenomenons such as material line without cracking, bounce-back, surface in punching course, meet client to door for coach processing forming
Performance requirement.
Surface quality situation：Product surface is scratched without wiping, roll marks, nonmetallic press-in, no stain black line defect, anodic oxidation
Color uniformity afterwards, surface can meet appearance requirement of the client to car door without clearly visible defect.
Embodiment 2
A kind of car door 1100-H24 aluminium alloy plates, the chemical composition mass percent of the aluminum alloy plate materials is：Si
0.366%, Fe 0.450 %, Cu 0.176 %, Mn 0.0058%, Mg 0.0018 %, Cr 0.0013 %, Zn 0.011 %, Ti
0.024%, remaining is Al.
The car door production method of 1100-H24 aluminium alloy plates, comprises the following steps：
（1）Melting and casting：Aluminium ingot is added in smelting furnace, in 720 ~ 750 DEG C of smelting temperature, refining temperature is 720 ~ 750
Aluminium ingot solution is obtained under the conditions of DEG C, then add Si, Fe, Cu obtain meeting the aluminum alloy plate materials chemical composition aluminium alloy it is molten
Liquid, casting temperature be 715 ~ 730 DEG C, casting speed be to cast out thickness by aluminium alloy solution under the conditions of 45 ~ 50mm/min to be
600mm, width are 1350mm aluminium alloy cast ingot；
（2）Sawing, milling face：Milling is distinguished the big face of ingot casting and facet using milling machine, big face one side milling Mian Liang≤20mm,
Facet one side milling Mian Liang≤10mm；
（3）Homogenization heat treatment is carried out to the ingot casting behind milling face：The temperature of evenly heating processing is 550 ~ 561 DEG C, during insulation
Between be 11 hours, temperature when coming out of the stove is 530 DEG C；
（4）Hot rolling：To passing through step（3）The aluminium alloy cast ingot of homogenization heat treatment carries out hot roughing and hot finishing, and makes
It is lubricated with emulsion and cooling obtains aluminum alloy coiled materials, the concentration of emulsion is 8%, and brush roll cleans speed with water for 650r/min；
After hot 530 DEG C of coggings of roughing, by the rolling of 17 passages, roughing by thickness for 600mm ingot rolling extremely
Thickness is 30mm, and the temperature of middle blank is 390 DEG C, then carries out hot finishing, by 4 frame continuous rollings, obtaining thickness is
7.0mm aluminum alloy coiled materials, finishing temperature is 270 DEG C；Wherein hot roughing when emulsion injection pressure be that 0.1MPa, temperature are
58 DEG C, emulsion pressure is 0.45MPa, temperature 60 C during hot finishing.It is 0.5Mpa compressed air to band to use pressure
Surface is purged；
（5）Blank anneal：To passing through step（4）Coiled material after hot rolling carries out blank anneal, and blank anneal furnace gas temperature is
460 DEG C, insulation 14 hours, then 430 DEG C of converter gas temperature be incubated 2 hours；
（6）It is cold rolling：To passing through step（5）Aluminum alloy coiled materials after the annealing carry out that continuous 3 passage is cold rolling to be machined to
Finished product thickness is 2.5 mm aluminum alloy coiled materials；
（7）Cleaning：Using stretch bending-straightening machine to passing through step（6）It is clear that aluminum alloy coiled materials after cold rolling carry out online alkali lye
Wash, alkali lye is NaOH solution, its concentration is 3%, temperature control at 75 DEG C ~ 85 DEG C；
（8）Finished products：To step（7）Obtained finished product aluminum alloy coiled materials are made annealing treatment, and annealing temperature is furnace gas
370 DEG C of constant temperature, metal temperature reach 220 DEG C, and then 280 DEG C of converter gas constant temperature is incubated 2.5 hours；
（9）To step（8）Aluminum alloy coiled materials after finished products processing, carry out online slice packaging, that is, obtain product.
According to the above method, it is respectively that two, finished product are rolled up in experiment volume one and experiment to be repeated twice and produce the product prepared
Performance is as follows：
There are the phenomenons such as material line without cracking, bounce-back, surface in punching course, meet client to door for coach processing forming
Performance requirement.
Surface quality situation：Product surface is scratched without wiping, roll marks, nonmetallic press-in, no stain black line defect, anodic oxidation
Color uniformity afterwards, surface can meet appearance requirement of the client to car door without clearly visible defect.
Embodiment 3
A kind of car door 1100-H24 aluminium alloy plates, the chemical composition mass percent of the aluminum alloy plate materials is：Si
0.398%, Fe 0.50%, Cu 0.15 %, Mn 0.0056 %, Mg 0.0018 %, Cr 0.0013 %, Zn 0.011 %, Ti
0.021 %, remaining is Al.
The production method of the 1100-H24 car doors aluminium alloy plate, comprises the following steps：
（1）Melting and casting：Aluminium ingot is added in smelting furnace, in 720 ~ 750 DEG C of smelting temperature, refining temperature is 720 ~ 750
Aluminium ingot solution is obtained under the conditions of DEG C, then add Si, Fe, Cu obtain meeting the aluminum alloy plate materials chemical composition aluminium alloy it is molten
Liquid, casting temperature be 715 ~ 730 DEG C, casting speed be to cast out thickness by aluminium alloy solution under the conditions of 45 ~ 50mm/min to be
600mm, width are 1350mm aluminium alloy cast ingot；
（2）Sawing, milling face：Milling is distinguished the big face of ingot casting and facet using milling machine, big face one side milling Mian Liang≤20mm,
Facet one side milling Mian Liang≤10mm；
（3）Homogenization heat treatment is carried out to the ingot casting behind milling face：The temperature of evenly heating processing is 550 ~ 570 DEG C, during insulation
Between be 10 hours, temperature when coming out of the stove is 520 DEG C；
（4）Hot rolling：To passing through step（3）The aluminium alloy cast ingot of homogenization heat treatment carries out hot roughing and hot finishing, and makes
It is lubricated with emulsion and cooling obtains aluminum alloy coiled materials, the concentration of emulsion is 6%, and brush roll cleans speed with water for 550 r/
min；
After hot 520 DEG C of coggings of roughing, by the rolling of 17 passages, roughing by thickness for 600mm ingot rolling extremely
Thickness is 36 mm, and the temperature of middle blank is 427 DEG C, then carries out hot finishing, by 4 frame continuous rollings, obtaining thickness is
7.5 mm aluminum alloy coiled materials, finishing temperature is 291 DEG C；Wherein hot roughing when emulsion injection pressure be 0.3MPa, temperature
60 DEG C of degree, emulsion pressure during hot finishing is 0.3MPa, 59 DEG C of temperature；It is 0.3Mpa compressed air to band to use pressure
Material surface is purged；
（5）Blank anneal：To passing through step（4）Coiled material after hot rolling carries out blank anneal, and blank anneal furnace gas temperature is
480 DEG C, insulation 12 hours, then 400 DEG C of converter gas temperature be incubated 1.5 hours；
（6）It is cold rolling：To passing through step（5）Aluminum alloy coiled materials after the annealing carry out that continuous 2 passage is cold rolling to be machined to
Finished product thickness is 2.7 mm aluminum alloy coiled materials；
（7）Cleaning：Using stretch bending-straightening machine to passing through step（6）It is clear that aluminum alloy coiled materials after cold rolling carry out online alkali lye
Wash, alkali lye is NaOH solution, its concentration is 5%, temperature control at 75 DEG C ~ 85 DEG C；
（8）Finished products：To step（7）Obtained finished product aluminum alloy coiled materials are made annealing treatment, and annealing temperature is furnace gas
380 DEG C of constant temperature, metal temperature reaches 238 DEG C, and then 300 DEG C of converter gas constant temperature is incubated 1.5 hours；
（9）To step（8）Aluminum alloy coiled materials after finished products processing, carry out online slice packaging, that is, obtain product.
According to the above method, it is respectively that two, finished product are rolled up in experiment volume one and experiment to be repeated twice and produce the product prepared
Performance is as follows：
There are the phenomenons such as material line without cracking, bounce-back, surface in punching course, meet client to door for coach processing forming
Performance requirement.
Surface quality situation：Product surface is scratched without wiping, roll marks, nonmetallic press-in, no stain black line defect, anodic oxidation
Color uniformity afterwards, surface can meet appearance requirement of the client to car door without clearly visible defect.
Embodiment 4
A kind of car door 1100-H24 aluminium alloy plates, the chemical composition mass percent of the aluminum alloy plate materials is：Si
0.40%, Fe 0.482 %, Cu 0.20 %, Mn 0.0060 %, Mg 0.0018 %, Cr 0.0013 %, Zn 0.011 %, Ti
0.025 %, remaining is Al.
The car door production method of 1100-H24 aluminium alloy plates, comprises the following steps：
（1）Melting and casting：Aluminium ingot is added in smelting furnace, in 720 ~ 750 DEG C of smelting temperature, refining temperature is 720 ~ 750
Aluminium ingot solution is obtained under the conditions of DEG C, then add Si, Fe, Cu obtain meeting the aluminum alloy plate materials chemical composition aluminium alloy it is molten
Liquid, casting temperature be 715 ~ 730 DEG C, casting speed be to cast out thickness by aluminium alloy solution under the conditions of 45 ~ 50mm/min to be
600mm, width are 1350mm aluminium alloy cast ingot；
（2）Sawing, milling face：Milling is distinguished the big face of ingot casting and facet using milling machine, big face one side milling Mian Liang≤20mm,
Facet one side milling Mian Liang≤10mm；
（3）Homogenization heat treatment is carried out to the ingot casting behind milling face：The temperature of evenly heating processing is 550 ~ 570 DEG C, during insulation
Between be 12 hours, temperature when coming out of the stove is 520 DEG C；
（4）Hot rolling：To passing through step（3）The aluminium alloy cast ingot of homogenization heat treatment carries out hot roughing and hot finishing, and makes
It is lubricated with emulsion and cooling obtains aluminum alloy coiled materials, the concentration of emulsion is 6%, and brush roll cleans speed with water for 550 r/
min；
After hot 520 DEG C of coggings of roughing, by the rolling of 15 passages, roughing by thickness for 600mm ingot rolling extremely
Thickness is 45 mm, and the temperature of middle blank is 450 DEG C, then carries out hot finishing, by 4 frame continuous rollings, obtaining thickness is
7.5mm aluminum alloy coiled materials, finishing temperature is 300 DEG C；Wherein hot roughing when emulsion injection pressure be 0.3MPa, temperature 57
DEG C, emulsion injection pressure is 0.2MPa, 55 DEG C of temperature during hot finishing；It is 0.2Mpa compressed air to band to use pressure
Surface is purged；
（5）Blank anneal：To passing through step（4）Coiled material after hot rolling carries out blank anneal, and blank anneal temperature is furnace gas
460 DEG C of constant temperature, insulation 14 hours, then 420 DEG C of converter gas constant temperature insulation 2.5 hours；
（6）It is cold rolling：To passing through step（5）Aluminum alloy coiled materials after the annealing carry out that continuous 2 passage is cold rolling to be machined to
Finished product thickness is 3.0 mm aluminum alloy coiled materials；
（7）Cleaning：Using stretch bending-straightening machine to passing through step（6）It is clear that aluminum alloy coiled materials after cold rolling carry out online alkali lye
Wash, alkali lye is NaOH solution, its concentration is 2%, temperature control at 75 DEG C ~ 85 DEG C；
（8）Finished products：To step（7）Obtained finished product aluminum alloy coiled materials are made annealing treatment, and annealing temperature furnace gas is determined
380 DEG C of temperature, metal temperature reaches 250 DEG C, then turns to determine the insulation 1.5 hours of 320 DEG C of furnace gas temperature；
（9）To step（8）Aluminum alloy coiled materials after finished products processing, carry out online slice packaging, that is, obtain product.
According to the above method, it is respectively that two, finished product are rolled up in experiment volume one and experiment to be repeated twice and produce the product prepared
Performance is as follows：
There are the phenomenons such as material line without cracking, bounce-back, surface in punching course, meet client to door for coach processing forming
Performance requirement.
Surface quality situation：Product surface is scratched without wiping, roll marks, nonmetallic press-in, no stain black line defect, anodic oxidation
Color uniformity afterwards, surface can meet appearance requirement of the client to car door without clearly visible defect.
Table 1 below is the standard performance parameter of 1100-H24 aluminium alloy plates, from above-mentioned experimental result, by present invention side
The tensile strength of 1100-H24 aluminium alloy plates prepared by method, yield strength, elongation percentage in critical field, and yield strength and
Elongation percentage is better than canonical parameter, it is shown that the superiority of the inventive method.
The standard performance parameter of the 1100-H24 aluminium alloy plates of table 1
。
Claims (6)
1. a kind of car door 1100-H24 aluminium alloy plates, it is characterised in that the chemical composition mass percent of the aluminium alloy plate is：
Si is that 0.35 ~ 0.40%, Fe is that 0.45 ~ 0.50%, Cu is 0.15 ~ 0.20%, Mn ＜ 0.05%, Mg ＜ 0.05%, Cr ＜ 0.05%, Zn
＜ 0.05%, Ti are 0.02 ~ 0.025%, and surplus is aluminium；
The production method of described car door 1100-H24 aluminium alloy plates, production stage is as follows：
（1）Aluminium ingot is added in smelting furnace, in 720 ~ 750 DEG C of smelting temperature, refining temperature is to obtain aluminium under the conditions of 720 ~ 750 DEG C
Ingot solution, then adds the aluminium alloy solution that Si, Fe, Cu obtain meeting the aluminum alloy plate materials chemical composition, is in casting temperature
715 ~ 730 DEG C, casting speed be 45 ~ 50mm/min under the conditions of aluminium alloy cast ingot is cast out by aluminium alloy solution；
（2）Sawing, milling face；
（3）Homogenization heat treatment is carried out to the ingot casting behind milling face；
（4）Hot rolling：To passing through step（3）The aluminium alloy cast ingot of homogenization heat treatment carries out hot rolling, and is moistened using emulsion
Sliding and cooling obtains aluminum alloy coiled materials；
Described hot rolling includes hot roughing and hot finishing, and described hot roughing, by 15 ~ 17 passages, is rolled in 510 ~ 530 DEG C of coggings
Make to the blank that thickness is 30 ~ 45mm, middle base temperature is 390 ~ 450 DEG C, hot finishing is carried out after roughing, hot finishing is by continuous
4 frames are rolled, and are 7.0 ~ 7.5mm, 270 DEG C ~ 300 DEG C of temperature after hot finishing to thickness；
（5）To after hot rolling coiled material carry out blank anneal, blank anneal temperature be 440 ~ 480 DEG C of furnace gas constant temperature, insulation 12 ~
16 hours, then 400 ~ 430 DEG C of converter gas constant temperature insulation 1.5 ~ 2.5 hours；
（6）To passing through step（5）Aluminum alloy coiled materials after the annealing carry out being cold-rolled to finished product thickness；
（7）Cleaning：Using the online caustic dip of stretch bending-straightening machine；
（8）To step（7）Finished product aluminum alloy coiled materials after cleaning are made annealing treatment, and annealing furnace gas temperature is 380 ± 10 DEG C, gold
Category temperature reaches 220 ~ 250 DEG C, and then 280 ~ 320 DEG C of converter gas temperature is incubated 1.5 ~ 2.5 hours；
（9）To step（8）Coiled material after annealing, carries out online slice packaging, that is, obtains product.
2. car door according to claim 1 1100-H24 aluminium alloy plates, it is characterised in that step（1）Described aluminium is closed
The thickness of golden ingot casting is that 600mm, width are that 1350mm, length are 6300mm；Step（2）Described milling face is to casting using milling machine
The big face of ingot and facet difference milling, big face one side milling Mian Liang≤20mm, facet one side milling Mian Liang≤10mm.
3. car door according to claim 1 1100-H24 aluminium alloy plates, it is characterised in that step（3）Described is uniform
The temperature for changing heat treatment is 550 ~ 570 DEG C, and soaking time is 8 ~ 12 hours, and temperature when coming out of the stove is 510 ~ 530 DEG C.
4. car door according to claim 1 1100-H24 aluminium alloy plates, it is characterised in that step（4）Described heat is thick
When rolling the injection pressure of emulsion be 0.1 ~ 0.3MPa, 55-60 DEG C of temperature, during hot finishing the injection pressure of emulsion be 0.2 ~
55-60 DEG C of 0.45MPa, temperature；The concentration of the emulsion is 3 ~ 8%；During hot finishing brush roll clean with water speed for 400 ~
650r/min。
5. car door according to claim 1 1100-H24 aluminium alloy plates, it is characterised in that step（6）Described is cold rolling
To be cold-rolled to finished product thickness by 2 ~ 3 passages, its thickness is 2.5 ~ 3.2mm, and total working modulus is 60 ~ 64.28%.
6. car door according to claim 1 1100-H24 aluminium alloy plates, it is characterised in that step（7）Described alkali lye
For NaOH solution, its concentration is 1% ~ 5%, temperature control at 75 DEG C ~ 85 DEG C.
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| CN106676441B (en) * | 2016-12-22 | 2018-10-30 | 新疆众和股份有限公司 | A kind of process heat treatment process of the soft state aluminium alloy of anodic oxidation |
| CN106676440B (en) * | 2016-12-22 | 2018-09-21 | 新疆众和股份有限公司 | A kind of process heat treatment process of the hard state aluminium alloy of anodic oxidation |
| CN109097635A (en) * | 2018-08-31 | 2018-12-28 | 招商局铝业(重庆)有限公司 | A kind of aluminium alloy used for cosmetic and preparation method thereof |
| CN110184515B (en) * | 2019-06-25 | 2021-02-09 | 天津忠旺铝业有限公司 | Preparation process of ultra-wide aluminum alloy plate for rocket fuel tank |
| CN110863162A (en) * | 2019-12-10 | 2020-03-06 | 山东德利铝业科技有限公司 | Aluminum foil for high-performance 1100 alloy lithium ion battery and preparation method thereof |
| CN112760510B (en) * | 2020-12-28 | 2022-02-18 | 浙江永杰铝业有限公司 | Aluminum alloy strip and preparation method thereof |
| CN112831696A (en) * | 2020-12-29 | 2021-05-25 | 河南中多铝镁新材有限公司 | Aluminum alloy plate for vehicle door and preparation method thereof |
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