CN107058815A - 3C Product appearance member 6xxx line aluminium alloys and its processing method - Google Patents
3C Product appearance member 6xxx line aluminium alloys and its processing method Download PDFInfo
- Publication number
- CN107058815A CN107058815A CN201611243553.5A CN201611243553A CN107058815A CN 107058815 A CN107058815 A CN 107058815A CN 201611243553 A CN201611243553 A CN 201611243553A CN 107058815 A CN107058815 A CN 107058815A
- Authority
- CN
- China
- Prior art keywords
- hours
- incubated
- product appearance
- appearance member
- line aluminium
- 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.)
- Granted
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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- 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
- C22F1/043—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
-
- 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
-
- 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
- C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
Abstract
The present invention relates to a kind of 3C Product appearance member 6xxx line aluminium alloys and its processing method, the al alloy component and content are：Mg0.4~0.8wt%, Si0.4~0.8wt%, Mn0.02~0.05wt%, Ti0.02~0.05wt%, Sn0.01~0.10wt%, Fe≤0.10wt%, Cu≤0.01wt%, Cr≤0.01wt%.Its processing method is：300~360 DEG C of homogenizing annealing is carried out to ingot casting and is incubated 6~10 hours, then 8~10 hours are incubated at 545~570 DEG C again；Then rolled, solution treatment, parked in room temperature and artificial aging carried out in 72 hours.The present invention realizes the combination of higher age hardening capability, high rigidity and anodic oxidation effect by adding trace element, reasonably optimizing alloying component and technology controlling and process, is the ideal material for manufacturing electronic product appearance member, and market application foreground is wide.
Description
Technical field
The present invention relates to a kind of 3C Product appearance member 6xxx line aluminium alloys and its processing method, belong to non-ferrous metal technology
Field.
Background technology
Usual 6xxx line aluminium alloys are present after room temperature Shelf―time effect, i.e. material quenching, it is necessary to carry out artificial aging immediately, no
Peak aging time, or even reduction peak strength will then be postponed.But in 6xxx line aluminium alloy production processes, due to equipment or life
The reason for production is arranged, artificial aging generally can not be carried out immediately, thus will reduce the mechanical property of material.Typically in 6xxx systems aluminium
A small amount of Cu elements (such as 6061,6111) can be added in alloy, to reduce room temperature Shelf―time effect to material final strength performance
Adverse effect.But Cu addition, can have adverse effect on to the decay resistance of material.
On the other hand, 6xxx line aluminium alloys are also widely used in the manufacture of 3C Product appearance member.In this application,
Need 6xxx line aluminium alloys that there is high anodic oxidation effect.Good anodic oxidation effect is by the composition influence of material, alloy
Content is higher, and it is bigger that downward trend occurs in anodic oxidation effect.But alloy content is higher, the intensity of material is higher, and high-strength
It is also the 3C necessary performances of aluminium alloy.Although Cu can improve the intensity of material, there is pole to the anodic oxidation effect of material
For detrimental effect.Therefore, it is necessary to which room temperature Shelf―time effect can be avoided, with high age hardening capability and anodic oxygen by developing one kind
Change the aluminium alloy that effect preferably, available for 3C Product appearance member is manufactured.
The content of the invention
The purpose of the present invention is to overcome the shortcomings of that prior art is present there is provided one kind with high age hardening capability and anode
Oxidation effectiveness preferably 3C Product appearance member 6xxx line aluminium alloys and its processing method.
The purpose of the present invention is achieved through the following technical solutions：
A kind of 3C Product appearance member 6xxx line aluminium alloys, its constituent and content are：0.4~0.8wt% of Mg, Si
0.4~0.8wt%, 0.02~0.05wt% of Mn, 0.02~0.05wt% of Ti, 0.01~0.10wt.% of Sn, Fe≤
0.10wt%, Cu≤0.01wt%, Cr≤0.01wt%.
Further, Mg/Si mass ratioes are 0.9~1.1 in the aluminium alloy.
The process steps of foregoing 6xxx line aluminium alloys are：The 6xxx line aluminium alloy cast ingots carry out homogenizing annealing,
6~10 hours are incubated in 300~360 DEG C, then 8~10 hours are incubated at 545~570 DEG C；Then rolled, solution treatment；
Then parked in room temperature and artificial aging is carried out in 72 hours.
Further, the artificial aging parameter is：160~200 DEG C are incubated 2~12 hours.
The substantive distinguishing features and significant progress that technical solution of the present invention is protruded are mainly reflected in：
1st, material of the present invention can reduce natrual ageing to material property not by the control of alloying component and technique
Profit influence；
2nd, aluminium alloy of the present invention, room temperature was parked in 72 hours after solution hardening, and the size of maximum elementide is less than 4
Individual atom, hardness, which rises, is less than 5HV, and hardness is more than 100HV after artificial aging；
3rd, the present invention realizes higher timeliness hard by adding trace element, reasonably optimizing alloying component and technology controlling and process
The combination of change ability, high rigidity and anodic oxidation effect, is the electronics that manufacture has higher requirements to intensity and anodic oxidation effect
The ideal material of product appearance part, market application foreground is wide.
Embodiment
In 6xxx line aluminium alloys, Mg, Si element are main alloy elements, and its total content and ratio determine the strong of material
Degree level.Mg, Si element total content are higher, then intensity is higher, but anodic oxidation color effects are then poorer, so consider,
Mg constituent contents are 0.4~0.8wt%, and Si constituent contents are that 0.4~0.8wt% is advisable；And, Mg/Si ratios preferably 0.9~
1.1, in favor of the precipitation of hardening constituent.
6xxx line aluminium alloys Cu addition can reduce room temperature and park to material property detrimental effect, but its content should not surpass
0.01wt% is crossed, otherwise the decay resistance and anodic oxidation effect of material will be influenceed.Mn, Ti, Cr are trace element, addition
The main purpose for starting to control combinations particle size into aluminium alloy, but its content is unsuitable too high, otherwise influences anodic oxidation color effects.
Therefore consider and draw：0.02~0.05wt% of Mn, 0.02~0.05wt.% of Ti, Cr≤0.01wt%, Fe are impurity member
Element, its content should be≤0.10wt%.
On the one hand it is and the opposing party because influenceed by alloying component that why 6xxx line aluminium alloys have room temperature Shelf―time effect
Face is because after aluminum alloy materials solution hardening, material is in the hypersaturated state in solute and room, easily causes age-hardening
Process is slow.It is specific to form as follows：After aluminum alloy materials solution hardening, material is in the hypersaturated state in solute and room, if
Material is parked in room temperature, then room can help Mg, Si solute to move, and forms elementide (containing Mg, Si)；The room temperature storage period gets over
Long, the size of elementide is bigger, and the volume fraction formed is also bigger.Elementide during follow-up artificial aging,
It can not be stabilized, and can first dissolve or because now vacancy concentration is relatively low, then cause age-hardening process slow, and
Cause peak hardness decline or time to peak seriously delayed.
Technical scheme of the present invention adds Sn elements in the material, exactly because it is combined with room and higher (can compare Cu
The combination in element and room can be high), it can slow down after material quenching, the formation (shape of elementide of elementide in room temperature process
Into needing the participation in room), that is, reduce natrual ageing effect, thus can improve material age-hardening dynamics after quenching and
Peak strength, or even shorten time to peak.But Sn contents are unsuitable too high, otherwise influence the anodic oxidation effect of material, so its
Content is preferably 0.01~0.10wt%.
6xxx line aluminium alloys of the present invention, need to subsequently carry out fire processing, rolling, solid solution, room temperature and park and timeliness
Processing.In equal fire processing, the technique used is incubated 6~10 hours for 300~360 DEG C, then again in 545~570 DEG C of guarantors
Temperature 8~10 hours；Low-temperature insulation is that, in order to promote the dissolving of the low melting point phase containing Sn, and soak is then to promote
Mg2The dissolving of Si phases.Material after fire is rolled and solution treatment, then places in 72 hours and is carried out manually in room temperature
Timeliness；According to the difference of Sn contents in material, different artificial aging systems need to be taken, when Sn contents are higher, can use compared with
Low temperature, shorter soaking time, vice versa.Consider, artificial aging system is 160~200 DEG C and is incubated 2~12 hours.
Technical scheme is further described below by way of specific embodiment.
Embodiment 1
Ingot casting composition and content are：Mg 0.51wt%, Si 0.54wt%, Mn 0.03wt%, Ti0.02wt%, Sn
0.01wt%, Fe 0.08wt%, Cu 0.01wt%, Cr 0.01wt%；Ingot casting is incubated 10 hours at 300 DEG C, then exists again
570 DEG C are incubated 10 hours；Then rolled, solution treatment, room temperature were parked in 72 hours, the size of maximum elementide is less than
4 atoms；Artificial aging system is 160 DEG C and is incubated 12 hours.
Embodiment 2
Ingot casting composition and content are：Mg 0.65wt%, Si 0.69wt%, Mn 0.04wt%, Ti0.03wt%, Sn
0.10wt%, Fe 0.10wt%, Cu 0.008wt%, Cr 0.007wt%；Ingot casting is incubated 6 hours at 360 DEG C, then exists again
545 DEG C are incubated 8 hours；Then rolled, solution treatment, room temperature were parked in 72 hours, the size of maximum elementide is less than 4
Individual atom；Artificial aging system is 200 DEG C and is incubated 2 hours.
Embodiment 3
Ingot casting composition and content are：Mg 0.73wt%, Si 0.70wt%, Mn 0.05wt%, Ti0.03wt%, Sn
0.10wt%, Fe 0.10wt%, Cu 0.008wt%, Cr 0.007wt%；Ingot casting is incubated 6 hours at 360 DEG C, then exists again
545 DEG C are incubated 8 hours；Then rolled, solution treatment, room temperature were parked in 72 hours, the size of maximum elementide is less than 4
Individual atom；Artificial aging system is 175 DEG C and is incubated 4 hours.
Embodiment 4
Ingot casting composition and content are：Mg 0.68wt%, Si 0.70wt%, Mn 0.04wt%, Ti0.04wt%, Sn
0.05wt%, Fe 0.10wt%, Cu 0.006wt%, Cr 0.006wt%；Ingot casting is incubated 7 hours at 340 DEG C, then exists again
560 DEG C are incubated 9 hours；Then rolled, solution treatment, room temperature were parked in 72 hours, the size of maximum elementide is less than 4
Individual atom；Artificial aging system is 180 DEG C and is incubated 3.5 hours.
Comparative example 1
Ingot casting composition and content are：Mg 0.2wt%, Si 1.0wt%, Mn 0.10wt%, Ti 0.05wt%, Fe
0.10wt%, Cu 0.20wt%, Cr 0.20wt%；Ingot casting is incubated 9 hours at 560 DEG C；Then rolled, solution treatment,
Room temperature was parked in 72 hours, 24 atoms of size of maximum elementide；Artificial aging system is 175 DEG C and is incubated 8 hours.
Comparative example 2
Ingot casting composition and content are：Mg 0.68wt%, Si 0.70wt%, Mn 0.04wt%, Ti0.04wt%, Sn
0.05wt%, Fe 0.10wt%, Cu 0.006wt%, Cr 0.006wt%；Ingot casting is incubated 9 hours at 500 DEG C；Then carry out
Rolling, solution treatment, room temperature were parked in 72 hours, and the size of maximum elementide is less than 4 atoms；Artificial aging system is
180 DEG C are incubated 4 hours.
Comparative example 3
Ingot casting composition and content are：Mg 1.0wt%, Si 0.2wt%, Mn 0.03wt%, Ti 0.03wt%, Fe
0.15wt%, Cu 0.15wt%, Cr 0.11wt%；Ingot casting is incubated 7 hours at 340 DEG C, is then incubated 9 hours at 560 DEG C again；
Then rolled, solution treatment, room temperature were parked in 72 hours, 28 atoms of size of maximum elementide；Artificial aging system
Spend and be incubated 4 hours for 180 DEG C.
Table 1 illustrates the performance of alloy in embodiment and comparative example.
Table 1：The anodic oxidation effect of alloy in embodiment and comparative example
| Material | Room temperature parks hardness rising | Artificial aging hardness | Anodic oxidation effect |
| Embodiment 1 | Less than 5HV | 102HV | In vain |
| Embodiment 2 | Less than 5HV | 109HV | In vain |
| Embodiment 3 | Less than 5HV | 112HV | In vain |
| Embodiment 4 | Less than 5HV | 111HV | In vain |
| Comparative example 1 | 30HV | 89HV | Secretly, turn to be yellow |
| Comparative example 2 | Less than 5HV | 92HV | In vain |
| Comparative example 3 | 32HV | 87HV | Secretly, turn to be yellow |
From embodiment and table 1,6 line aluminium alloy material of the present invention can be subtracted by the control of alloying component and technique
Adverse effect of the small natrual ageing to material property；The aluminium alloy processing method, after solution hardening, room temperature is parked 72 hours
Interior, the size of maximum elementide is less than 4 atoms, and hardness, which rises, is less than 5HV, and hardness is more than 100HV after artificial aging.
In summary, the present invention is realized higher by adding trace element, reasonably optimizing alloying component and technology controlling and process
The combination of age hardening capability, high rigidity and anodic oxidation effect, is that manufacture has higher requirements to intensity and anodic oxidation effect
Electronic product appearance member ideal material.
It the above is only the concrete application example of the present invention, protection scope of the present invention be not limited in any way.It is all to use
Technical scheme formed by equivalent transformation or equivalent replacement, all falls within rights protection scope of the present invention.
Claims (4)
1. a kind of 3C Product appearance member 6xxx line aluminium alloys, it is characterised in that：The constituent and content of the aluminium alloy be：Mg
0.4~0.8wt%, 0.4~0.8wt% of Si, 0.02~0.05wt% of Mn, 0.02~0.05wt% of Ti, Sn 0.01~
0.10wt.%、Fe≤0.10wt%、Cu≤0.01wt%、Cr≤0.01wt% 。
2. 3C Product appearance member 6xxx line aluminium alloys according to claim 1, it is characterised in that：In the aluminium alloy
Mg/Si mass ratioes are 0.9~1.1.
3. the processing method of 3C Product appearance member 6xxx line aluminium alloys according to claim 1 or 2, it is characterised in that：
The process steps of the aluminium alloy are：The 6xxx line aluminium alloy cast ingots carry out homogenizing annealing, and 6 are incubated in 300~360 DEG C
~10 hours, then it is incubated 8~10 hours at 545~570 DEG C；Then rolled, solution treatment；Then 72 are parked in room temperature small
When interior carry out artificial aging.
4. the processing method of 3C Product appearance member 6xxx line aluminium alloys according to claim 3, it is characterised in that：It is described
Artificial aging parameter is：160~200 DEG C are incubated 2~12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243553.5A CN107058815B (en) | 2016-12-29 | 2016-12-29 | 3C Product appearance member 6xxx line aluminium alloy and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243553.5A CN107058815B (en) | 2016-12-29 | 2016-12-29 | 3C Product appearance member 6xxx line aluminium alloy and its processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107058815A true CN107058815A (en) | 2017-08-18 |
| CN107058815B CN107058815B (en) | 2019-02-12 |
Family
ID=59623226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611243553.5A Active CN107058815B (en) | 2016-12-29 | 2016-12-29 | 3C Product appearance member 6xxx line aluminium alloy and its processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107058815B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439979A (en) * | 2018-12-14 | 2019-03-08 | 湖南海铝汽车工业有限公司 | 6063T6 improved aluminum alloy and its processing method |
| CN112481527A (en) * | 2019-09-12 | 2021-03-12 | 晟通科技集团有限公司 | 6XXX series aluminum alloy round ingot and preparation method thereof |
| CN112609110A (en) * | 2020-12-31 | 2021-04-06 | 郑州轻研合金科技有限公司 | Aluminum lithium alloy capable of being anodized and preparation method thereof |
| CN114107753A (en) * | 2021-10-08 | 2022-03-01 | 中国科学院金属研究所 | Design method of 6082 aluminum alloy without parking effect |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238962A (en) * | 2015-10-12 | 2016-01-13 | 苏州中色研达金属技术有限公司 | High-performance 6XXX aluminum alloy for outer part of electronic product and machining method thereof |
| CN105238961A (en) * | 2015-10-12 | 2016-01-13 | 苏州中色研达金属技术有限公司 | 6XXX aluminum alloy and machining method thereof |
| WO2016031938A1 (en) * | 2014-08-27 | 2016-03-03 | 株式会社神戸製鋼所 | Aluminum alloy sheet |
| WO2016031941A1 (en) * | 2014-08-27 | 2016-03-03 | 株式会社神戸製鋼所 | Aluminum alloy sheet |
| CN105838927A (en) * | 2015-02-02 | 2016-08-10 | 株式会社神户制钢所 | High strength aluminum alloy sheet |
-
2016
- 2016-12-29 CN CN201611243553.5A patent/CN107058815B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016031938A1 (en) * | 2014-08-27 | 2016-03-03 | 株式会社神戸製鋼所 | Aluminum alloy sheet |
| WO2016031941A1 (en) * | 2014-08-27 | 2016-03-03 | 株式会社神戸製鋼所 | Aluminum alloy sheet |
| CN105838927A (en) * | 2015-02-02 | 2016-08-10 | 株式会社神户制钢所 | High strength aluminum alloy sheet |
| CN105238962A (en) * | 2015-10-12 | 2016-01-13 | 苏州中色研达金属技术有限公司 | High-performance 6XXX aluminum alloy for outer part of electronic product and machining method thereof |
| CN105238961A (en) * | 2015-10-12 | 2016-01-13 | 苏州中色研达金属技术有限公司 | 6XXX aluminum alloy and machining method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439979A (en) * | 2018-12-14 | 2019-03-08 | 湖南海铝汽车工业有限公司 | 6063T6 improved aluminum alloy and its processing method |
| CN109439979B (en) * | 2018-12-14 | 2021-02-23 | 湖南海铝汽车工业有限公司 | 6063T6 improved aluminum alloy and processing method thereof |
| CN112481527A (en) * | 2019-09-12 | 2021-03-12 | 晟通科技集团有限公司 | 6XXX series aluminum alloy round ingot and preparation method thereof |
| CN112609110A (en) * | 2020-12-31 | 2021-04-06 | 郑州轻研合金科技有限公司 | Aluminum lithium alloy capable of being anodized and preparation method thereof |
| CN114107753A (en) * | 2021-10-08 | 2022-03-01 | 中国科学院金属研究所 | Design method of 6082 aluminum alloy without parking effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107058815B (en) | 2019-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6607463B2 (en) | Strain-induced aging strengthening in dilute magnesium alloy sheets | |
| JP6690714B2 (en) | Non-oriented electrical steel sheet, method for producing non-oriented electrical steel sheet, and method for producing motor core | |
| CN107058815B (en) | 3C Product appearance member 6xxx line aluminium alloy and its processing method | |
| CN106350716B (en) | A kind of high intensity appearance member aluminum alloy materials and preparation method thereof | |
| CN102021443B (en) | Al-Er-Zr alloy and ageing strengthening process thereof | |
| KR100709056B1 (en) | Non-oriented magnetic steel sheet and method for production thereof | |
| JP6607464B2 (en) | Formable magnesium-type wrought alloy | |
| CN106868362A (en) | Smart mobile phone appearance member 7xxx line aluminium alloys and its processing method | |
| JP2002533570A (en) | Method for producing aluminum-magnesium-lithium alloy product | |
| JP5146169B2 (en) | High strength non-oriented electrical steel sheet and manufacturing method thereof | |
| CN105063430A (en) | 3003-H16 aluminum alloy plate strip and production method thereof | |
| CN109694990B (en) | Light transformation induced plasticity steel with good strong plasticity and production method thereof | |
| JP2016141843A (en) | High strength aluminum alloy sheet | |
| JP2022513645A (en) | Magnesium alloy material and its manufacturing method | |
| CN104862524A (en) | High-strength alloy and preparation method therefor | |
| KR102303378B1 (en) | Corrosion resistant aluminium alloy containing magnesium for casting | |
| WO2019062732A1 (en) | Cold-rolled magnetic lamination steel with excellent magnetic properties and manufacturing method therefor | |
| JP6916882B2 (en) | Magnesium alloy plate material and its manufacturing method | |
| CN107841664A (en) | 3C Product appearance member 5xxx line aluminium alloys and its processing method | |
| CN108796380B (en) | Steel sheet for extremely low carbon cold rolling enameling having post-firing yield strength of 210MPa or more, and method for producing same | |
| CN108251731A (en) | A kind of magnesium-rare earth and preparation method thereof | |
| JP4211875B2 (en) | Aluminum alloy composition and production method thereof | |
| CN105369077A (en) | Aluminum alloy conductor material and preparation method thereof | |
| CN107164624B (en) | Method for controlling pockmark defects on surface of phosphorus-containing cold-rolled high-strength steel | |
| JP2022545025A (en) | Cu-containing non-oriented electrical steel sheet 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 |