CN107475582B - A kind of smart phone 6061G aluminium alloy and its processing method - Google Patents
A kind of smart phone 6061G aluminium alloy and its processing method Download PDFInfo
- Publication number
- CN107475582B CN107475582B CN201710676909.2A CN201710676909A CN107475582B CN 107475582 B CN107475582 B CN 107475582B CN 201710676909 A CN201710676909 A CN 201710676909A CN 107475582 B CN107475582 B CN 107475582B
- Authority
- CN
- China
- Prior art keywords
- temperature
- aluminium
- rolling
- cold
- annealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- 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
Abstract
The invention discloses a kind of smart phone 6061G aluminium alloys and its processing method, wherein, the mass percentage of the al alloy component is as follows: Si:0.50~0.70%, Fe:0.11~0.15%, Cu:0.15~0.20%, Mn:0.06~0.08%, Mg:0.80~1.10%, Cr:0.11~0.20%, Ti:0.01~0.03%, surplus are Al and inevitable impurity；Corresponding processing method is successively passed through ingot casting, homogenizing annealing, hot rolling, cold rolling, intermediate annealing process, secondary cold-rolling, solution treatment and eight step of final ageing treatment and is obtained；Splendid anodic oxidation effect is obtained by using the aluminium that the al alloy component and processing method obtain, meet the blasting treatment of the zircon sand of 205~210 superfine mesh, be a kind of cell phone appearance appliance have it is high-intensitive require, also there is anodized effect the 6 of high request to be the ideal aluminum alloy materials of smart phone appearance member, market application prospect is wide.
Description
Technical field
The present invention relates to non-ferrous metal and its technology field, in particular to a kind of smart phone 6061G aluminium
Alloy and its processing method.
Background technique
6061 aluminium alloys with medium intensity and good anodic oxidation performance, thus in smart phone field due to having
Good application prospect, the main manufacture of smart phone aluminium is profile extrusion at present, and the technical characterstic of extruding is material
Line is easy to control, but stripper plate cannot effectively be thinned, and common thickness about 9mm, this causes extrusion plate to add in mobile phone spare and accessory parts
In factory, aluminium blank needs CNC machining to machine away a large amount of metals, could obtain the finished product phone housing of about 0.8mm, this
Aluminium metal waste is serious in the process, and CNC work time cost is prohibitively expensive, does not meet the green energy conservation industry reason that country advocates
It reads, there is aluminium manufacturer to attempt using thin aluminium alloy calendering material thus, to save the serious waste and CNC high work time cost of metal, but
6061 aluminium alloys roll material due to its intrinsic congenital limitation, cause to expect that line powder injection molding difficulty is big, even if using completely new calendering
Technique still has light material line defect, can only meet general requirement of the middle-grade smart phone to appearance member, and expects that line defect is unstable
It is fixed, often exceed the minimum acceptable standard of Cellphone Accessories factory, be not available, loses larger.
In addition, mobile phone is the decorative effect for meeting more and more high-grade fine and smooth sandblasting, zircon sand used in blasting treatment
It is increasingly thinner, by the 120 mesh coarse sands of early stage, it is promoted to sand in 170 current mesh, or even the fine sand to 205 mesh.In this promotion
In, calendering aluminium is difficult to meet this harsh challenge, shows the situation warded off, but effective demand is exactly market.Cause
This rolls material it is necessary to develop high-performance, high sandblasting anode effect, the aluminium alloy without material line, to meet the harshness of mobile phone market
It is required that.
Summary of the invention
The object of the present invention is to provide a kind of suitable for cell phone appearance part manufacture with splendid anodic oxidation effect and
Take into account the smart phone 6061G aluminium alloy of the strength of materials.
It is a further object of the present invention to provide a kind of processing methods of above-mentioned smart phone 6061G aluminium alloy.
The material line defect generated in Anodizing Process, is primarily referred to as a group fabric line, the i.e. tissue of material internal
(including crystal grain, intermetallic compound size and distribution) is uneven；Specifically, such as: grain size is uneven, leads to assembled watch
There is the phenomenon that being obviously distributed along rolling direction in face；Intermetallic compound size is larger, and finished surface is caused to have obviously along rolling
The phenomenon that directional spreding processed.And the reason of this kind of phenomenons occur, is to be influenced by alloying component, alloy processing technology.Cause
This, only improves from the angle of design of alloy and processing technology, could optimize to aluminum alloy materials, solution
Certainly finished product there are problems that expecting line defect.
For this purpose, technical solution of the present invention is as follows:
A kind of smart phone 6061G aluminium alloy, the mass percentage of ingredient are as follows: Si:0.50~0.70%,
Fe:0.11~0.15%, Cu:0.15~0.20%, Mn:0.06~0.08%, Mg:0.80~1.10%, Cr:0.11~
0.20%, Ti:0.01~0.03%, surplus are Al and inevitable impurity.
Wherein, the raw material for preparing the aluminium alloy of content as described above can use pure metal or intermediate alloy.
The content of other inevitable impurity in above-mentioned al alloy component: single≤0.03%, add up to≤0.10%.
The crystallite dimension of 6061 aluminium alloys is mainly by the size of disperse phase, pattern, distribution and cold deformation energy storage (dislocation
Plug product), heat treatment temperature and soaking time determine.Specifically, when there is a large amount of nanoscale disperse phase in aluminium base body tissue
AlFeSi、MnAl6、CrAl7When, crystal boundary passage when recrystallization can be effectively hindered, to control crystallite dimension.Specifically,
The formation of the phase is influenced by the content of tri- element of Fe, Mn, Cr: Fe content is higher, then the volume fraction of AlFeSi disperse phase is more,
The obstruction effect grown up to crystal grain is better.But when Fe content is more than certain value, then ingot casting can be formed coarse in casting in crystal boundary
Insoluble phase, generate the non-uniform phenomenon of segregation, and this insoluble phase is difficult to again back dissolving, secondary heavy in subsequent heat treatment
It forms sediment, is an origin cause of formation for expecting line.Mn content is higher, then the volume fraction of MnAl6 disperse phase is more, imitates to the obstruction that crystal grain is grown up
Fruit is better.But when Mn content is more than certain value, anodic oxidation color can be graying, influences decorative effect, and MnAl6Compound holds
Easy segregation is roughened, is uneven, and an origin cause of formation of material line.The effect of Cr is similar with Mn, but content and sphere of action are variant.
The coarse segregation of intermetallic compound, uneven, when rolling, can eventually lead to aluminium in the later period along rolling direction flow distribution
Because of the difference of the electrode potential of intrinsic silicon when anodic oxidation, difference of corrosion occurs, and then forms macroscopic " material line " and lacks
It falls into.Therefore, applicant has found in carrying out a large amount of comparisons and Optimum Experiment, and the upper content limit of Fe element is no more than 0.15%；
The upper content limit of Mn element is no more than 0.08%；The upper content limit of Cr element is no more than 0.20%；Meanwhile Fe element contains
The content lower limit that the content lower limit that amount lower limit cannot be below 0.11%, Mn element cannot be below 0.06%, Cr element cannot be below
0.11%, it otherwise will cause beneficial disperse phase because of volume fraction deficiency, cannot effectively prevent coarse grains and uneven.
In addition, by the control of the content of Si element 0.50~0.70%, Mg element content control 0.80~1.10%,
Si element and Mg element preferably can be subjected to matching and form Mg2Si hardening constituent, plays ageing strengthening effect, makes to be finally made
Aluminum alloy materials reach moderate strength.And the content of element Cu controls in the range of 0.15~0.20%, can not only play
Strengthening effect is supplemented, and can guarantee that Cu element exists and disperses (i.e. in the form of Cu simple substance) completely in the form of solid solution simultaneously
In alloy matrix aluminum, the extra phase of harmful intermetallic compound will not be formed, to influence anode color and influence aluminium conjunction
The uniformity of dispersed phase in auri body.It is tiny to obtain and then by the control of the content of Ti element in 0.01~0.03% range
Ingot structure, inhibit casting formed a coarse InterMetallic Compound, to overcome material line defect have supplement facilitation.
Applicant improves smart phone with the processing method of 6061G aluminium alloy, including successively carry out ingot casting,
Homogenize that annealing, hot rolling is coiled, is cold-rolled to intermediate anneal gauge, intermediate annealing process, secondary cold-rolling, solution treatment and final timeliness
Processing.
Further, specific procedure of processing is as follows:
S1, by a certain proportion of each alloying element, melting, alloying, are then cast as ingot casting in smelting furnace；
S2, homogenizing annealing: ingot casting is placed in heating furnace, is warming up to 530~560 with the heating speed of 30~50 DEG C/h
DEG C, keep the temperature 6~10h, after be cooled to 450~500 DEG C, keep the temperature 2~3h, come out of the stove；
S3, by the slab hot-rolling come out of the stove be coiled material；
S4, after coiled material is cooled to room temperature rolled thickness reduction to intermediate anneal gauge；
S5, cold rolling aluminium is carried out to intermediate annealing process: annealing temperature: 500~560 DEG C, keeps the temperature 10~30s；
S6, secondary cold-rolling is carried out to the aluminium being cooled to room temperature, and is cold-rolled to finished product thickness；
S7, to finished product carry out solution treatment: solid solubility temperature: 520~560 DEG C, 10~30s of soaking time；
S8, it finally carries out ageing treatment: temperature: 150~180 DEG C, keeping the temperature 6~12h.
It is preferred that the intermediate anneal gauge area requirement in the step S4 are as follows: to secondary cold-rolling there are 30~50% it is cold
Working modulus.Specifically, cold working rate=[(intermediate anneal gauge-finished product thickness)/intermediate anneal gauge] * 100%.
In the processing method of above-mentioned aluminium alloy, disperse phase AlFeSi, MnAl of step S26、CrAl7, it is uniform in ingot casting
Formation is precipitated during annealing.It is emphasized that homogenizing annealing treatment process is most important to the formation of phase.Equal
It homogenizes in annealing process, using suitable heating rate (30~50 DEG C/h), production efficiency can be taken into account and help disperse phase
AlFeSi、MnAl6、CrAl7Forming core, to finally promote the formation of a large amount of disperse phases.In addition, the holding temperature unsuitable excessively high, time
It is unsuitable too long, it avoids causing disperse phase to grow up due to the upper limit for being more than temperature and time, be roughened, assembling, the unevenness become again
It is even, it then avoids causing to expect that line defect occurs due to there is non-uniform coarse InterMetallic Compound.
In addition, in the first stage of homogenizing annealing process, using suitable holding temperature (530~560 DEG C) and heat preservation
Time (6~10 hours) can effectively promote the crystal boundary non-equilibrium phase (Mg formed when casting solidification2Si) it is completely dissolved in matrix crystalline substance
In grain, guarantee the uniformity of ingot structure.This is highly beneficial, otherwise coarse non-equilibrium phase to the control of the material line in later period,
In calendering, intermediate annealing, finished product solid solution, it is difficult to eliminate, remains in aluminum substrate always, form coarse, uneven distribution
Mg2Si phase, and then when leading to anodic oxidation, because of Mg2The electrode potential of Si phase is than aluminium base low, preferentially corrodes, and forms material
Line defect.
In the second stage of homogenizing annealing, temperature adjustment keeps the temperature 2~3 hours, part nanoscale to 450~500 DEG C
Mg2Si phase is uniformly precipitated, to reduce the Mg2Si phase content being dissolved in alloy matrix aluminum.Since hot rolling is an aluminium temperature drop
Process (finishing temperature is generally at 300 DEG C or so), i.e., the precipitation process of one supersaturated solid solution；Therefore with the temperature of aluminium rolled piece
Degree decline, maximum solubility also decline, oversaturated Mg2Si segregation will be precipitated from matrix, be easy to be segregated on crystal boundary, one
Denier segregation is grown up, during subsequent solution treatment also can due to oversized cannot complete back dissolving, lead to anodic oxygen material
The appearance of line defect.However, start rolling temperature cannot be too low due to needing to take into account the thermoplasticity of ingot casting, therefore suitable second segment heat preservation
Temperature range be 450~500 DEG C.
In step S4, the setting of intermediate anneal gauge: to the cold working rate of secondary cold-rolling preferably reserved 30~50%, this is cold
Working modulus range, can energy storage again, form appropriate dislocation pile up degree and born of the same parents' shape substructure development degree, be final aluminium
Tissue modulation lays the foundation, and inhibits the final appearance of material line.
The intermediate annealing process of step S5 can generally carry out on continuous annealing line machine column, and temperature control is 500~560
DEG C, soaking time corresponds to 10~30s；On the one hand it can make Mg during intermediate annealing2Si phase re-dissolves, is precipitated, uniformly divides
Cloth；On the other hand cold rolling can be made to be crushed elongated grain generation recrystallization, crystal grain position to rotation, orientation is random.Specifically,
Cold rolled grain be it is fibrous, directionality is obvious.Recrystal grain is etc. that shaft-like, directionality are unobvious.The crystal grain of threadiness,
Directionality is obvious, is elongated along rolling direction as a result, because crystal boundary energy is high, generating preferential corrosion, shape in anodic oxidation
At material line defect.And equi-axed crystal, directionality are unobvious, though preferential corrosion when anode, does not form along the visible of rolling direction
Striped, i.e. material line defect.
The finished product solid solution process of step S7 generally also carries out on continuous annealing line machine column；Its corresponding setting temperature is 520~560
DEG C, soaking time is 10~30s；Using the processing step, Mg on the one hand can be made2Si phase is sufficiently dissolved into aluminum substrate, after being
The ageing strengthening of phase lays the foundation；On the other hand size, the shape of the appropriate adjusting seed size size of energy, pattern, distribution and compound
Looks, distribution do final regulation for the intensity and material line of finished product aluminium.
The ageing process of step S8 carries out generally in aging furnace, and corresponding setting temperature is 150~180 DEG C, protects
Temperature is 6~12 hours；The processing step is used to realize the peak value aging strength for reaching material, meeting mobile phone 6 is aluminium to strong
The basic demand of degree；Meanwhile because of the nanoscale hardening constituent small and dispersed of precipitation and uniformly, the material line of anodic oxidation is not caused to rush
It hits.
In conclusion being improved by the above ingredient and processing technology, effectively aluminium alloy is realized to crystal grain ruler simultaneously
Very little control, the control to intermetallic compound, and ensure the dispersibility of each phase in alloy matrix aluminum, to avoid finished product material
There is material line defect in anode oxidation process in material.
The smart phone is with 6061G aluminium alloy by reasonably adjusting the alloying element of 6061 aluminium alloys and containing for impurity element
Amount, while processing technology is optimized, the especially introducing of intermediate annealing process, and formulate reasonable intermediate annealing process,
Can make 6 is that aluminium calendering material obtains splendid anodic oxidation effect, meets the blasting treatment of the zircon sand of 205~210 superfine mesh,
It is that a kind of cell phone appearance appliance has and high-intensitive requires, also has anodized effect the 6 of high request to be smart phone
The ideal aluminum alloy materials of appearance member, market application prospect are wide.
Specific embodiment
The present invention is described further combined with specific embodiments below, but following embodiments absolutely not to the present invention have appoint
What is limited.
The aluminium alloy of group assignment system Examples 1 to 5 and comparative example 1~4 that according to the form below 1 provides and process aluminium alloy at
Product.
Table 1:
Embodiment 1
A kind of smart phone is as follows with the process steps of 6061G aluminium alloy: providing alloy according to embodiment 1 in table 1
Make the aluminum water and ingot casting of respective alloy ratio；Ingot casting is sent into vertical push furnace and carries out homogenizing annealing: with 32
DEG C/heating of the heating speed of h keeps the temperature 6 hours when metal is warming up to 530 DEG C, then the strong chill casting ingot of blower is to 452 DEG C, heat preservation
2 hours, then ingot casting was come out of the stove；Hot rolling is coiled；After volume is cooling, continues rolled thickness reduction and move back thickness into；Then enterprising in continuous annealing line
Row intermediate annealing (in step back reserved 32% cold working rate), annealing temperature: 503 DEG C, soaking time: 10s；Secondary cold-rolling after offline
To finished product thickness；It returns to continuous annealing line and carries out finished product solution treatment, solid solubility temperature: 525 DEG C, soaking time: 10s；When finally carrying out
Effect processing, temperature: 165 DEG C, heat preservation: 7 hours.
It will be sprayed in anode oxidation process using the zircon sand of 205 mesh through 6061G aluminium made from above-mentioned processing method
Sand processing.
Embodiment 2
A kind of smart phone is as follows with the process steps of 6061G aluminium alloy: providing alloy according to embodiment 2 in table 1
Make the aluminum water and ingot casting of respective alloy ratio；Ingot casting is sent into vertical push furnace and carries out homogenizing annealing: with 40
DEG C/heating of the heating speed of h keeps the temperature 8 hours when metal is warming up to 540 DEG C, then the strong chill casting ingot of blower is to 470 DEG C, heat preservation
2 hours, then ingot casting was come out of the stove；Hot rolling is coiled；After volume is cooling, continues rolled thickness reduction and move back thickness into；Then enterprising in continuous annealing line
Row intermediate annealing (in step back reserved 40% cold working rate), annealing temperature: 520 DEG C, soaking time: 15s；Secondary cold-rolling after offline
To finished product thickness；It returns to continuous annealing line and carries out finished product solution treatment, solid solubility temperature: 540 DEG C, soaking time: 15s；When finally carrying out
Effect processing, temperature: 170 DEG C, heat preservation: 8 hours.
It will be sprayed in anode oxidation process using the zircon sand of 205 mesh through 6061G aluminium made from above-mentioned processing method
Sand processing.
Embodiment 3
A kind of smart phone is as follows with the process steps of 6061G aluminium alloy: providing alloy according to embodiment 3 in table 1
Make the aluminum water and ingot casting of respective alloy ratio；Ingot casting is sent into vertical push furnace and carries out homogenizing annealing: with 45
DEG C/heating of the heating speed of h keeps the temperature 9 hours when metal is warming up to 550 DEG C, then the strong chill casting ingot of blower is to 490 DEG C, heat preservation
3 hours, then ingot casting was come out of the stove；Hot rolling is coiled；After volume is cooling, continues rolled thickness reduction and move back thickness into；Then enterprising in continuous annealing line
Row intermediate annealing (in step back reserved 45% cold working rate), annealing temperature: 540 DEG C, soaking time: 20s；Secondary cold-rolling after offline
To finished product thickness；It returns to continuous annealing line and carries out finished product solution treatment, solid solubility temperature: 550 DEG C, soaking time: 20s；When finally carrying out
Effect processing, temperature: 175 DEG C, heat preservation: 9 hours.
It will be sprayed in anode oxidation process using the zircon sand of 210 mesh through 6061G aluminium made from above-mentioned processing method
Sand processing.
Embodiment 4
A kind of smart phone is as follows with the process steps of 6061G aluminium alloy: providing alloy according to embodiment 4 in table 1
Make the aluminum water and ingot casting of respective alloy ratio；Ingot casting is sent into vertical push furnace and carries out homogenizing annealing: with 48
DEG C/heating of the heating speed of h keeps the temperature 9.5 hours when metal is warming up to 558 DEG C, then the strong chill casting ingot of blower is protected to 495 DEG C
Temperature 2.5 hours, then ingot casting is come out of the stove；Hot rolling is coiled；After volume is cooling, continues rolled thickness reduction and move back thickness into；Then in continuous annealing line
Upper progress intermediate annealing (in step back reserved 47% cold working rate), annealing temperature: 558 DEG C, soaking time: 25s；It is secondary after offline
It is cold-rolled to finished product thickness；It returns to continuous annealing line and carries out finished product solution treatment, solid solubility temperature: 558 DEG C, soaking time: 25s；It is most laggard
Row ageing treatment, temperature: 175 DEG C, heat preservation: 10 hours.
It will be sprayed in anode oxidation process using the zircon sand of 210 mesh through 6061G aluminium made from above-mentioned processing method
Sand processing.
Embodiment 5
A kind of smart phone is as follows with the process steps of 6061G aluminium alloy: providing alloy according to embodiment 5 in table 1
Make the aluminum water and ingot casting of respective alloy ratio；Ingot casting is sent into vertical push furnace and carries out homogenizing annealing: with 50
DEG C/heating of the heating speed of h keeps the temperature 10 hours when metal is warming up to 560 DEG C, then the strong chill casting ingot of blower is protected to 500 DEG C
Temperature 3 hours, then ingot casting is come out of the stove；Hot rolling is coiled；After volume is cooling, continues rolled thickness reduction and move back thickness into；Then in continuous annealing line
It carries out intermediate annealing (in step back reserved 50% cold working rate), annealing temperature: 560 DEG C, soaking time: 30s；It is secondary cold after offline
It is rolled to finished product thickness；It returns to continuous annealing line and carries out finished product solution treatment, solid solubility temperature: 558 DEG C, soaking time: 25s；Finally carry out
Ageing treatment, temperature: 180 DEG C, heat preservation: 12 hours.
It will be sprayed in anode oxidation process using the zircon sand of 210 mesh through 6061G aluminium made from above-mentioned processing method
Sand processing.
Comparative example 1
A kind of smart phone is as follows with the process steps of 6061G aluminium alloy: providing alloy according to comparative example 1 in table 1
Make the aluminum water and ingot casting of respective alloy ratio；Ingot casting is sent into vertical push furnace and carries out homogenizing annealing: with 45
DEG C/heating of the heating speed of h keeps the temperature 9 hours when metal is warming up to 550 DEG C, then the strong chill casting ingot of blower is to 490 DEG C, heat preservation
3 hours, then ingot casting was come out of the stove；Hot rolling is coiled；After volume is cooling, continues rolled thickness reduction and move back thickness into；Then enterprising in continuous annealing line
Row intermediate annealing (in step back reserved 45% cold working rate), annealing temperature: 540 DEG C, soaking time: 20s；Secondary cold-rolling after offline
To finished product thickness；It returns to continuous annealing line and carries out finished product solution treatment, solid solubility temperature: 550 DEG C, soaking time: 20s；When finally carrying out
Effect processing, temperature: 175 DEG C, heat preservation: 9 hours.
It will be sprayed in anode oxidation process using the zircon sand of 170 mesh through 6061G aluminium made from above-mentioned processing method
Sand processing.
Comparative example 2
A kind of smart phone is as follows with the process steps of 6061G aluminium alloy: providing alloy according to comparative example 2 in table 1
Make the aluminum water and ingot casting of respective alloy ratio；Ingot casting is sent into vertical push furnace and carries out homogenizing annealing: with 50
DEG C/heating of the heating speed of h keeps the temperature 10 hours when metal is warming up to 560 DEG C, then the strong chill casting ingot of blower is protected to 500 DEG C
Temperature 3 hours, then ingot casting is come out of the stove；Hot rolling is coiled；After volume is cooling, continues rolled thickness reduction and move back thickness into；Then in continuous annealing line
It carries out intermediate annealing (in step back reserved 50% cold working rate), annealing temperature: 560 DEG C, soaking time: 30s；It is secondary cold after offline
It is rolled to finished product thickness；It returns to continuous annealing line and carries out finished product solution treatment, solid solubility temperature: 560 DEG C, soaking time: 30s；Finally carry out
Ageing treatment, temperature: 180 DEG C, heat preservation: 12 hours.
It will be sprayed in anode oxidation process using the zircon sand of 170 mesh through 6061G aluminium made from above-mentioned processing method
Sand processing.
Comparative example 3
A kind of smart phone is as follows with the process steps of 6061G aluminium alloy: providing alloy according to comparative example 3 in table 1
Make the aluminum water and ingot casting of respective alloy ratio；Ingot casting is sent into vertical push furnace and carries out homogenizing annealing: with 25
DEG C/heating of the heating speed of h keeps the temperature 12 hours when metal is warming up to 525 DEG C, then the strong chill casting ingot of blower is protected to 520 DEG C
Temperature 1 hour, then ingot casting is come out of the stove；Hot rolling is coiled；After volume is cooling, continues rolled thickness reduction and move back thickness into；Then in continuous annealing line
It carries out intermediate annealing (in step back reserved 50% cold working rate), annealing temperature: 480 DEG C, soaking time: 40s；It is secondary cold after offline
It is rolled to finished product thickness；It returns to continuous annealing line and carries out finished product solution treatment, solid solubility temperature: 515 DEG C, soaking time: 50s；Finally carry out
Ageing treatment, temperature: 155 DEG C, heat preservation: 5 hours.
It will be sprayed in anode oxidation process using the zircon sand of 170 mesh through 6061G aluminium made from above-mentioned processing method
Sand processing.
Comparative example 4
A kind of smart phone is as follows with the process steps of 6061G aluminium alloy: providing alloy according to comparative example 4 in table 1
Make the aluminum water and ingot casting of respective alloy ratio；Ingot casting is sent into vertical push furnace and carries out homogenizing annealing: with 45
DEG C/heating of the heating speed of h keeps the temperature 8 hours when metal is warming up to 550 DEG C, then the strong chill casting ingot of blower is to 480 DEG C, heat preservation
2.5 hours, then ingot casting was come out of the stove；Hot rolling is coiled；After volume is cooling, rolled thickness reduction to finished product thickness；It returns to continuous annealing line and carries out finished product
Solution treatment, solid solubility temperature: 550 DEG C, soaking time: 20s；Ageing treatment is finally carried out, temperature: 170 DEG C, heat preservation: 10 hours.
It will be sprayed in anode oxidation process using the zircon sand of 170 mesh through 6061G aluminium made from above-mentioned processing method
Sand processing.
Effect of the aluminium further prepared to Examples 1 to 5 and comparative example 1~4 after anodic oxidation is compared.It needs
It is noted that carrying out in anodic oxidation processing procedure on finished-product material surface, the spraying of zircon sand is actually the cover to material line
Journey, that is to say, that the thinner zircon sand of spraying also implies that it covers material line although more aesthetically pleasing appearance can be obtained
Effect is weaker, also higher to the original structure uniformity requirement of material.In general, the item for the material line that the zircon sand of 170 mesh covers
Line width is no more than 90 microns, and the width of fringe for the material line that the zircon sand of 205 mesh covers is no more than 70 microns, the zircon sand of 170 mesh
The width of fringe of the material line of covering is no more than 68 microns.
Comparison result is as shown in table 2 below.
Table 2:
| Example | Anodic oxidation effect |
| Embodiment 1 | The material line defect being visible by naked eyes, anode effect are excellent. |
| Embodiment 2 | The material line defect being visible by naked eyes, anode effect are excellent. |
| Embodiment 3 | The material line defect being visible by naked eyes, anode effect are excellent. |
| Embodiment 4 | The material line defect being visible by naked eyes, anode effect are excellent. |
| Embodiment 5 | The material line defect being visible by naked eyes, anode effect are excellent. |
| Comparative example 1 | There is serious material line, anode effect is poor. |
| Comparative example 2 | There is serious material line, anode effect is poor. |
| Comparative example 3 | There is serious material line, anode effect is poor. |
| Comparative example 4 | There is serious material line, anode effect is poor. |
As can be seen that the 6061G aluminium alloy of Examples 1 to 5 preparation carries out sun through the zircon sand of 205~210 mesh from upper table 2
After the oxidation processes of pole, the material line defect that material surface is visible by naked eyes, anode effect is excellent.As it can be seen that Examples 1 to 5 preparation
The size of assembled watch fabric line is no more than 70 microns.And aluminium alloy prepared by comparative example 1~4 uses 170 purposes of lower requirement
After zircon sand carries out anodized, the visible serious material line defect of material surface naked eyes, material streakline width is larger, and anode effect is poor.
In addition, carrying out the destructive testing that mobile phone falls, experiment knot to the 6061G aluminium alloy finished product of Examples 1 to 5 preparation
Fruit shows that the 6061G aluminium alloy finished product of Examples 1 to 5 preparation has the suitable strength of materials, meets the destructiveness that mobile phone falls
The corresponding requirements of test determination.
The above is only specific application examples of the invention, are not limited in any way to protection scope of the present invention, all uses
Equivalent transformation or equivalent replacement and the technical solution formed, all fall within rights protection scope of the present invention.
Claims (3)
1. a kind of smart phone 6061G aluminium alloy, which is characterized in that the mass percentage of the al alloy component is as follows: Si:
0.50~0.70%, Fe:0.11~0.15%, Cu:0.15~0.20%, Mn:0.06~0.08%, Mg:0.80~1.10%,
Cr:0.11~0.20%, Ti:0.01~0.03%, surplus are Al and inevitable impurity；Preparation method is as follows:
S1, by a certain proportion of each alloying element, melting, alloying, are then cast as ingot casting in smelting furnace；
S2, homogenizing annealing: ingot casting being placed in heating furnace, is warming up to 530~560 DEG C with the heating speed of 30~50 DEG C/h,
Keep the temperature 6~10h, after be cooled to 450~500 DEG C, keep the temperature 2~3h, come out of the stove；
S3, by the slab hot-rolling come out of the stove be coiled material；
S4, after coiled material is cooled to room temperature rolled thickness reduction to intermediate anneal gauge；
S5, cold rolling aluminium is carried out to intermediate annealing process: annealing temperature: 500~560 DEG C, keeps the temperature 10~30s；
S6, secondary cold-rolling is carried out to the aluminium being cooled to room temperature, and is cold-rolled to finished product thickness；
S7, to finished product carry out solution treatment: solid solubility temperature: 520~560 DEG C, 10~30s of soaking time；
S8, it finally carries out ageing treatment: temperature: 150~180 DEG C, keeping the temperature 6~12h.
2. a kind of processing method of smart phone according to claim 1 6061G aluminium alloy, which is characterized in that specific
Steps are as follows:
S1, by a certain proportion of each alloying element, melting, alloying, are then cast as ingot casting in smelting furnace；
S2, homogenizing annealing: ingot casting being placed in heating furnace, is warming up to 530~560 DEG C with the heating speed of 30~50 DEG C/h,
Keep the temperature 6~10h, after be cooled to 450~500 DEG C, keep the temperature 2~3h, come out of the stove；
S3, by the slab hot-rolling come out of the stove be coiled material；
S4, after coiled material is cooled to room temperature rolled thickness reduction to intermediate anneal gauge；
S5, cold rolling aluminium is carried out to intermediate annealing process: annealing temperature: 500~560 DEG C, keeps the temperature 10~30s；
S6, secondary cold-rolling is carried out to the aluminium being cooled to room temperature, and is cold-rolled to finished product thickness；
S7, to finished product carry out solution treatment: solid solubility temperature: 520~560 DEG C, 10~30s of soaking time；
S8, it finally carries out ageing treatment: temperature: 150~180 DEG C, keeping the temperature 6~12h.
3. the smart phone according to claim 2 processing method of 6061G aluminium alloy, which is characterized in that the step
Intermediate anneal gauge area requirement in S4 are as follows: there are 30~50% cold working rates to secondary cold-rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710676909.2A CN107475582B (en) | 2017-08-09 | 2017-08-09 | A kind of smart phone 6061G aluminium alloy and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710676909.2A CN107475582B (en) | 2017-08-09 | 2017-08-09 | A kind of smart phone 6061G aluminium alloy and its processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107475582A CN107475582A (en) | 2017-12-15 |
| CN107475582B true CN107475582B (en) | 2019-08-13 |
Family
ID=60599892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710676909.2A Active CN107475582B (en) | 2017-08-09 | 2017-08-09 | A kind of smart phone 6061G aluminium alloy and its processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107475582B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149092A (en) * | 2017-12-29 | 2018-06-12 | 西南铝业（集团）有限责任公司 | A kind of production method of the high surface mobile phone Al-alloy casing of 6 system and aluminium alloy sheet |
| CN108118217A (en) * | 2017-12-29 | 2018-06-05 | 西南铝业（集团）有限责任公司 | The high surface Al-alloy casing of mobile phone and the preparation method of aluminium alloy sheet |
| CN108385000B (en) * | 2018-02-09 | 2019-08-23 | 深圳市华加日西林实业有限公司 | The processing technology and application of aluminium alloy and aluminium alloy extrusions |
| CN109280822A (en) * | 2018-11-29 | 2019-01-29 | 天津忠旺铝业有限公司 | A kind of rail traffic 6082G aluminum alloy plate materials and its processing technology |
| CN109355537B (en) * | 2018-12-14 | 2021-02-23 | 湖南海铝汽车工业有限公司 | 6-series aluminum alloy section for new energy battery tray and processing method thereof |
| CN110184509B (en) * | 2019-07-06 | 2020-07-03 | 佛山市高盾金属有限公司 | Aluminum alloy with excellent performance and product thereof |
| CN110724864B (en) * | 2019-11-27 | 2021-03-16 | 郑州明泰实业有限公司 | 6M61 aluminum alloy base material for 5G filter cover plate and preparation process thereof |
| CN111187950B (en) * | 2020-02-06 | 2021-09-21 | 广东宏锦新材料科技有限公司 | 6-series aluminum alloy, preparation method thereof and mobile terminal |
| CN111254329A (en) * | 2020-02-25 | 2020-06-09 | 天津忠旺铝业有限公司 | Rolling process of 6061 aluminum alloy medium plate |
| CN115679165A (en) * | 2021-07-28 | 2023-02-03 | 宝山钢铁股份有限公司 | 6-series aluminum alloy plate for semiconductor equipment and manufacturing method |
| CN114369773B (en) * | 2021-12-30 | 2022-09-16 | 山东瑞烨新能源装备有限公司 | Treatment method of aluminum alloy material |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985707A (en) * | 2010-11-16 | 2011-03-16 | 苏州有色金属研究院有限公司 | Aluminum alloy material with high bake hardening capability for 6-series automobile bodies |
| CN104451208B (en) * | 2014-11-28 | 2017-06-20 | 苏州有色金属研究院有限公司 | The body of a motor car manufacture method of 6XXX line aluminium alloy sheet materials |
| CN105039805B (en) * | 2015-07-08 | 2017-05-17 | 山东裕航特种合金装备有限公司 | Manufacturing method of aluminum alloy mechanical arm track girder hollow profile |
| US10513766B2 (en) * | 2015-12-18 | 2019-12-24 | Novelis Inc. | High strength 6XXX aluminum alloys and methods of making the same |
| CN105441740A (en) * | 2016-01-12 | 2016-03-30 | 苏州有色金属研究院有限公司 | Autobody 6XXX series aluminium alloy plate with high edge-curling property and manufacturing method thereof |
-
2017
- 2017-08-09 CN CN201710676909.2A patent/CN107475582B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107475582A (en) | 2017-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107475582B (en) | A kind of smart phone 6061G aluminium alloy and its processing method | |
| CN107475584B (en) | A kind of smart phone 6063G aluminium alloy and its processing method | |
| CN104451208B (en) | The body of a motor car manufacture method of 6XXX line aluminium alloy sheet materials | |
| CN112501461B (en) | Preparation method of automotive high-gloss aluminum alloy exterior trim plate | |
| CN104532077B (en) | Short-flow preparation method for 6XXX-series aluminum alloy automotive body sheet without paint brushed lines | |
| CN102703773B (en) | Aluminum alloy plate and production process thereof | |
| CN107190184B (en) | A kind of mirror-like anodic oxidation Aluminum Plate and Strip and preparation method thereof | |
| CN100529132C (en) | Aluminum alloy band for jalousie and manufacturing method thereof | |
| CN106350713B (en) | A kind of preparation process of Al-Mg-Si alloy and its plank | |
| CN103014446A (en) | Production method of 5052-H22/32 aluminum alloy plate strip | |
| CN114107752B (en) | high-Cr aluminum alloy plate strip for anodic oxidation and preparation method thereof | |
| CN113695538B (en) | Preparation method of high-formability mirror aluminum plate strip and mirror aluminum plate strip | |
| CN110453121A (en) | A kind of 7xxx line aluminium alloy plate of high brightness and preparation method thereof | |
| CN111155002A (en) | Aluminum-magnesium-silicon alloy for reducing negative effect of natural aging for vehicle body and preparation method thereof | |
| CN102329992B (en) | Ultrathin air-conditioning aluminum foil and manufacturing method thereof | |
| JP2008223075A (en) | Hot rolling omission type aluminum alloy sheet and its manufacturing method | |
| CN109402462A (en) | A kind of low earing rate aluminium strip for capacitor shell and preparation method thereof | |
| CN109082566A (en) | A kind of mobile phone frame is alloy Aluminum Plate and Strip and preparation method thereof with 6 | |
| JP2007186741A (en) | Aluminum alloy sheet having excellent high-temperature and high-speed formability, and its production method | |
| CN107338375A (en) | A kind of 6 line aluminium alloys and its processing method | |
| CN105568088B (en) | Vehicle body Al Mg Si alloys and preparation method thereof of microalloy optimization | |
| CN104561668A (en) | Aluminum alloy sheet for wine cover material and production method of aluminum alloy sheet | |
| CN1693505A (en) | Aluminium alloy foil for air conditioner radiation fin and its manufacturing method | |
| TWI674324B (en) | Method for manufacturing aluminum-manganese alloy | |
| CN109554591B (en) | 5-series alloy plate strip for card support and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: 6061g aluminum alloy for smart phone and its processing method Effective date of registration: 20210730 Granted publication date: 20190813 Pledgee: Bank of Harbin Co.,Ltd. Shenyang Branch Pledgor: TIANJIN ZHONGWANG ALUMINIUM INDUSTRY Co.,Ltd. Registration number: Y2021990000659 |