CN113215450A - Aluminum alloy for manufacturing mobile phone and processing technology thereof - Google Patents
Aluminum alloy for manufacturing mobile phone and processing technology thereof Download PDFInfo
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- CN113215450A CN113215450A CN202110409054.3A CN202110409054A CN113215450A CN 113215450 A CN113215450 A CN 113215450A CN 202110409054 A CN202110409054 A CN 202110409054A CN 113215450 A CN113215450 A CN 113215450A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000012545 processing Methods 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 230000032683 aging Effects 0.000 claims abstract description 14
- 238000003754 machining Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 4
- 229910018182 Al—Cu Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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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
- 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
- C22F1/05—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
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Abstract
The invention relates to an aluminum alloy for manufacturing a mobile phone and a processing technology thereof, belonging to the technical field of aluminum alloy processing. The alloy comprises the following components, by mass, 0.10-0.20% of Cu, 0.40-0.68% of Si, 0.05-0.09% of Ti, less than or equal to 0.11% of Fe, less than or equal to 0.12% of Mn, 0.40-0.60% of Mg, less than or equal to 0.11% of Zn, less than or equal to 0.10% of Cr, and the balance of Al and impurities which cannot be removed; the preparation steps of the alloy are as follows: casting a rod, homogenizing, cooling, extruding, quenching and aging; the method solves the problem that the aluminum alloy mobile phone part has more cracks in the later CNC machining stage, improves the strength of the aluminum alloy, and reduces the CNC machining reject ratio of the aluminum alloy mobile phone part.
Description
Technical Field
The invention relates to the technical field of aluminum alloy processing, in particular to an aluminum alloy for manufacturing a mobile phone and a processing technology thereof.
Background
At present, along with the continuous vigorous development of the domestic mobile phone industry, the competition of various manufacturers for the performance of various aspects of mobile phones is more and more intense; in the face of the demand of larger planar area of mobile phones and lighter weight of consumers, research and development competition of mobile phone suppliers for materials for manufacturing mobile phones is becoming more and more intense.
6 series aluminum alloy is widely used for manufacturing mobile phones because of higher strength and lighter weight, and 6 series aluminum alloy can also manufacture various mobile phone parts, but the existing 6 series aluminum alloy is easy to crack in the later stage of CNC (computer numerical control) machining of mobile phone parts because the strength is not enough, so that the reject ratio of the CNC machining of the mobile phone parts is too high.
Disclosure of Invention
Aiming at the problems of defects and deficiencies in the prior art, the invention provides the aluminum alloy for manufacturing the mobile phone and the processing technology thereof, which solve the problem that the CNC processing later stage of the aluminum alloy mobile phone part has more cracks, improve the strength of the aluminum alloy and reduce the CNC processing fraction defective of the aluminum alloy mobile phone part.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the aluminum alloy for manufacturing the mobile phone comprises, by mass, 0.10-0.20% of Cu, 0.40-0.68% of Si, 0.05-0.09% of Ti, not more than 0.11% of Fe, not more than 0.12% of Mn, 0.40-0.60% of Mg, not more than 0.11% of Zn, not more than 0.10% of Cr, and the balance of Al and impurities which cannot be removed.
Further, in the aluminum alloy component, the content of Cu is 0.13-0.15 wt%.
Further, in the aluminum alloy composition, the content of Ti is 0.07 wt%.
Furthermore, in the aluminum alloy component, the content of Fe is 0.03-0.08 wt%.
Further, in the aluminum alloy composition, the content of Cu is 0.13 wt%.
The invention also discloses a processing technology of any one of the aluminum alloys for manufacturing the mobile phone, which comprises the following specific steps:
the method comprises the following steps: processing the alloy into an aluminum alloy cast rod according to the components and the content of each alloy;
step two: homogenizing the aluminum alloy cast rod at 560 ℃ for 20 h;
step three: cooling the aluminum alloy cast rod to 500-540 ℃;
step four: extruding and quenching the aluminum alloy cast rod;
step five: and (3) carrying out aging treatment on the aluminum alloy cast rod, wherein the aging parameters are multiplied by 150 ℃ (10-15 h).
Further, the aluminum alloy was cooled to 520 ℃ in three steps.
Further, in the fifth step, the aging parameter is 150 ℃ multiplied by 10 h.
The invention has the following beneficial effects: according to the invention, by improving the proportion and the processing technology of each element component of the original 6-series aluminum alloy, the strength and the thermal stability of the aluminum alloy are obviously improved under the condition that the plasticity of the aluminum alloy is kept, the crack occurrence condition in the later stage of the CNC processing of the mobile phone parts is reduced, and the reject ratio of the CNC processing of the mobile phone parts is reduced.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Example 1:
an aluminum alloy for manufacturing a mobile phone comprises, by mass, 0.10% of Cu, 0.40% of Si, 0.05% of Ti, 0.11% of Fe, 0.12% of Mn, 0.40% of Mg, 0.11% of Zn, 0.10% of Cr, and the balance of Al and unremovable impurities.
The Cu-Cu bond in the aluminum alloy precipitated phase theta is strongest, and the second is an Al-Cu bond, and the strengths of the Cu-Cu bonds are stronger than that of the strongest Cu-Cu bond of metal Cu. Research shows that the precipitation of theta phase improves the strength of the alloy. During low temperature aging of supersaturated solid solutions of Al-Cu phases, it is usually the steady state θ (Al) of the GP zone2Cu) phase, Cu atoms are more easily diffused and moved through vacancies, grain boundaries, and the like. The strongest bond and the second strongest bond of the theta phase are stronger than the strongest bond of the alpha-Al phase of the matrix, so that the strength of the integral bond of the alloy is improved;so that the strength and the thermal stability of the alloy can be obviously improved.
The invention also discloses a processing technology of any one of the aluminum alloys for manufacturing the mobile phone, which comprises the following specific steps:
the method comprises the following steps: processing the alloy into an aluminum alloy cast rod according to the components and the content of each alloy;
step two: homogenizing the aluminum alloy cast rod at 560 ℃ for 20 h;
step three: cooling the aluminum alloy cast rod to 520 ℃;
step four: extruding and quenching the aluminum alloy cast rod;
step five: and (3) carrying out aging treatment on the aluminum alloy cast rod, wherein the aging parameter is 150 ℃ multiplied by 10 h.
Example 2:
an aluminum alloy for manufacturing a mobile phone comprises, by mass, 0.15% of Cu, 0.40% of Si, 0.05% of Ti, 0.11% of Fe, 0.12% of Mn, 0.40% of Mg, 0.11% of Zn, 0.10% of Cr, and the balance of Al and unremovable impurities.
The invention also discloses a processing technology of any one of the aluminum alloys for manufacturing the mobile phone, which comprises the following specific steps:
the method comprises the following steps: processing the alloy into an aluminum alloy cast rod according to the components and the content of each alloy;
step two: homogenizing the aluminum alloy cast rod at 560 ℃ for 20 h;
step three: cooling the aluminum alloy cast rod to 520 ℃;
step four: extruding and quenching the aluminum alloy cast rod;
step five: and (3) carrying out aging treatment on the aluminum alloy cast rod, wherein the aging parameter is 150 ℃ multiplied by 10 h.
Example 3:
an aluminum alloy for manufacturing a mobile phone comprises, by mass, 0.20% of Cu, 0.40% of Si, 0.05% of Ti, 0.11% of Fe, 0.12% of Mn, 0.40% of Mg, 0.11% of Zn, and 0.10% of Cr.
The invention also discloses a processing technology of any one of the aluminum alloys for manufacturing the mobile phone, which comprises the following specific steps:
the method comprises the following steps: processing the alloy into an aluminum alloy cast rod according to the components and the content of each alloy;
step two: homogenizing the aluminum alloy cast rod at 560 ℃ for 20 h;
step three: cooling the aluminum alloy cast rod to 520 ℃;
step four: extruding and quenching the aluminum alloy cast rod;
step five: and (3) carrying out aging treatment on the aluminum alloy cast rod, wherein the aging parameter is 150 ℃ multiplied by 10 h.
Comparative example 1:
the 6013 aluminum alloy comprises, by mass, 0.35% of Cu, 0.40% of Si, 0.05% of Ti, 0.11% of Fe, 0.12% of Mn, 0.40% of Mg, 0.11% of Zn, and 0.10% of Cr.
Table 1: performance comparison table of aluminum alloy plates of each example and aluminum alloy plates of comparative example
| Aluminum alloy material | Yield strength (MPa) | Tensile strength (MPa) | Plasticity (%) |
| Example 1 | 358 MPa | 300MPa | 19 |
| Example 2 | 340 MPa | 320MPa | 17 |
| Example 3 | 376MPa | 295MPa | 17 |
| Comparative example 1 | 330MPa | 290MPa | 17 |
Table 1 specifically lists the main performance data of the aluminum alloy sheets of each example and the aluminum alloy sheets of the comparative example for comparison; the comparison result shows that the yield strength and the tensile strength of the aluminum alloy obtained by adopting the technical scheme of the invention are obviously improved under the condition of keeping the plasticity not reduced, so that the reject ratio of the mobile phone parts which are subjected to CNC processing by using the aluminum alloy material obtained by the invention is reduced.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. The present invention is not limited to the above-described embodiments, which are described in the specification and illustrated only for illustrating the principle of the present invention, but various changes and modifications may be made within the scope of the present invention as claimed without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An aluminum alloy for manufacturing a mobile phone is characterized in that: the alloy comprises, by mass, 0.10-0.20% of Cu, 0.40-0.68% of Si, 0.05-0.09% of Ti, less than or equal to 0.11% of Fe, less than or equal to 0.12% of Mn, 0.40-0.60% of Mg, less than or equal to 0.11% of Zn, less than or equal to 0.10% of Cr, and the balance of Al and impurities which cannot be removed.
2. The aluminum alloy for mobile phone manufacturing according to claim 1, wherein: in the aluminum alloy component, the content of Cu is 0.13-0.15 wt%.
3. The aluminum alloy for mobile phone manufacturing according to claim 1, wherein: in the aluminum alloy component, the content of Ti is 0.07 wt%.
4. The aluminum alloy for mobile phone manufacturing according to claim 1, wherein: in the aluminum alloy component, the content of Fe is 0.03-0.08 wt%.
5. The aluminum alloy for mobile phone manufacturing according to claim 2, wherein: in the aluminum alloy composition, the content of Cu is 0.13 wt%.
6. A processing technology of the aluminum alloy for manufacturing the mobile phone as claimed in any one of claims 1 to 5, characterized by comprising the following specific steps:
the method comprises the following steps: processing the alloy into an aluminum alloy cast rod according to the components and the content of each alloy;
step two: homogenizing the aluminum alloy cast rod at 560 ℃ for 20 h;
step three: cooling the aluminum alloy cast rod to 500-540 ℃;
step four: extruding and quenching the aluminum alloy cast rod;
step five: and (3) carrying out aging treatment on the aluminum alloy cast rod, wherein the aging parameters are multiplied by 150 ℃ (10-15 h).
7. The machining process of the aluminum alloy for manufacturing the mobile phone as claimed in claim 6, wherein the machining process comprises the following steps: three steps cool the aluminum alloy to 520 ℃.
8. The machining process of the aluminum alloy for manufacturing the mobile phone as claimed in claim 6, wherein the machining process comprises the following steps: in the fifth step, the aging parameter is 150 ℃ multiplied by 10 h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110409054.3A CN113215450A (en) | 2021-04-16 | 2021-04-16 | Aluminum alloy for manufacturing mobile phone and processing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110409054.3A CN113215450A (en) | 2021-04-16 | 2021-04-16 | Aluminum alloy for manufacturing mobile phone and processing technology thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000319742A (en) * | 1999-03-09 | 2000-11-21 | Kobe Steel Ltd | Aluminum alloy extruded material with excellent crushing characteristic in axial direction |
| CN105296811A (en) * | 2015-10-23 | 2016-02-03 | 苏州有色金属研究院有限公司 | High-strength 6xxx aluminum alloy for mobile phone parts and machining method thereof |
| CN106521254A (en) * | 2016-09-21 | 2017-03-22 | 苏州中色研达金属技术有限公司 | 6XXX-based aluminum alloy for intelligent mobile phone appearance parts, and processing method thereof |
| CN108118210A (en) * | 2017-11-28 | 2018-06-05 | 中铝材料应用研究院有限公司 | A kind of processing method of aluminium alloy and its extrudate |
| CN108754362A (en) * | 2018-06-20 | 2018-11-06 | 辽宁忠旺集团有限公司 | A kind of production method of new-energy automobile aluminium alloy electric casing |
-
2021
- 2021-04-16 CN CN202110409054.3A patent/CN113215450A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000319742A (en) * | 1999-03-09 | 2000-11-21 | Kobe Steel Ltd | Aluminum alloy extruded material with excellent crushing characteristic in axial direction |
| CN105296811A (en) * | 2015-10-23 | 2016-02-03 | 苏州有色金属研究院有限公司 | High-strength 6xxx aluminum alloy for mobile phone parts and machining method thereof |
| CN106521254A (en) * | 2016-09-21 | 2017-03-22 | 苏州中色研达金属技术有限公司 | 6XXX-based aluminum alloy for intelligent mobile phone appearance parts, and processing method thereof |
| CN108118210A (en) * | 2017-11-28 | 2018-06-05 | 中铝材料应用研究院有限公司 | A kind of processing method of aluminium alloy and its extrudate |
| CN108754362A (en) * | 2018-06-20 | 2018-11-06 | 辽宁忠旺集团有限公司 | A kind of production method of new-energy automobile aluminium alloy electric casing |
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