CN102337439A - Preparation method of magnesium alloy matt thin strip for mobile phone shell - Google Patents
Preparation method of magnesium alloy matt thin strip for mobile phone shell Download PDFInfo
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- CN102337439A CN102337439A CN2011103431091A CN201110343109A CN102337439A CN 102337439 A CN102337439 A CN 102337439A CN 2011103431091 A CN2011103431091 A CN 2011103431091A CN 201110343109 A CN201110343109 A CN 201110343109A CN 102337439 A CN102337439 A CN 102337439A
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Abstract
The invention discloses a preparation method of a magnesium alloy matt thin strip for a mobile phone shell. The preparation method is characterized in that a laser roughening roller is used for rolling in the final pass of a cold rolling process, thus the surface roughness of a board is uniform and a good matt effect is achieved. Compared with a magnesium alloy board subjected to chemical matt treatment, the loss of the magnesium alloy raw material is reduced by 15-30%, and the no silking and pine grains are generated on the surface of the board. In the preparation method, alloying elements of the magnesium alloy are adjusted, thus the alloy has excellent surface quality and is suitable for preparing the matt surface. The prepared thin strip finished product has excellent mechanical properties, wherein the tensile strength is 280-320MPa, the elongation percentage is 8-10%, the earing rate is reduced to 1-3%, and the average strain ratio is 1.2-1.6; the adhesive force of painting on the surface of the magnesium alloy thin strip is improved; and the coating performance of the thin strip is improved.
Description
Technical field
The present invention relates to the metal material processing field, particularly a kind of handset shell is with the preparation method of the inferior light strip of magnesiumalloy.
Background technology
Along with mobile phone generally gets into people's life, adapt to development trends such as lightness, portability, the demand of magnesiumalloy increases suddenly.In electronic industry, adopt the handset shell of magnesium alloy plate stamping technology production to compare with corresponding die casting product, there is wall to approach advantages such as reaching the productivity height.Therefore magnesium alloy stamping part has a good application prospect, and exploitation magnesium alloy plate punching press and correlation technique thereof have important significance for theories and social benefit.But; Because the magnesiumalloy crystalline structure is close-packed hexagonal (Hcp), plasticity is relatively poor, and difficulty is shaped; Lumber recovery is low; The wrong understanding of shortcoming such as people are inflammable to magnesiumalloy, not corrosion-resistant in addition causes the punching press of wrought magnesium alloys sheet material not obtain large-scale application, and wrought magnesium alloys and Research on forming are also very insufficient.The sheet material of wrought magnesium alloys, section bar and forging are mainly used in fields such as Aeronautics and Astronautics and military affairs, do not spread to civil area.Economizing on resources and reducing under the social desirability of pollution, wrought magnesium alloys is beneficial to the STRATEGIES OF SUSTAINABLE DEVELOPMENT requirement, is badly in need of transition of people's conceptions, accelerates research, promotes its application in civil area.
The magnesiumalloy matt plate is as a kind of novel magnesium alloy materials; Because of it has the ideal surface decoration effect; Good deep drawability and good japanning tinctorial property; Be applied to various shells, framework, decorative element more and more, the application on handset shell is also more and more, and the market requirement rapidly increases.And domestic development technology to the magnesiumalloy matt plate is still immature; And inferior light method of the electrochemistry that generally adopts and the inferior optical processing method in polishing back; Process links is many, material loss is big, yield rate is merely 60%; And defectives such as low, the surperficial silking of the mechanical property of finished product, pine tree line are many are difficult to satisfy user demand, have restricted the development of relevant industries to a certain extent.
Summary of the invention
To the deficiency of prior art, one of the object of the invention is to provide the preparation method of a kind of handset shell with the inferior light strip of magnesiumalloy.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of handset shell is with the preparation method of the inferior light strip of magnesiumalloy, and said preparation method comprises the steps:
1) by weight percentage, said magnesiumalloy contains 0.5～0.8% Mn, 0.8～1.5% S i, 0.8～1.2% yttrium, 0.8～1.2% Cu, 0.3～0.8% Zn and the Mg mixing founding of surplus, makes magnesium alloy ingot;
2) magnesium alloy ingot is heated to 600～615 ℃, insulation homogenizing annealing 4～6h;
3) before the hot rolling magnesium alloy ingot is heated to 450～470 ℃, insulation 3～5h is hot-rolled down to 6～8mm with magnesium alloy ingot then, batches and makes the magnesiumalloy coils of hot rolled;
4) it is cold rolling the magnesiumalloy coils of hot rolled to be carried out multi-pass, and the cold rolling use laser roughening roller of final passage is rolled, and the cold roling reduction of final passage is 8%～15%, and final rolling thickness is 0.5～0.8mm,
5) heating of metal temperature to 280～310 ℃ in lehre, insulation 2～3.5h promptly obtains aluminum alloy matt plate.
Preparing method's of the present invention beneficial effect is:
1) the cold rolling stage need not to adopt the texturing roller back and forth rolling and the waste energy consumption only needs to use the laser roughening roller to be rolled in cold rolling final passage, makes the surfaceness homogeneous of sheet material, can reach good matt effect.Compare the magnesium alloy plate of chemical inferior optical processing, the loss of raw material magnesium alloy has reduced by 15～30%, and plate surface does not have silking and the pine tree line produces;
2) the present invention makes that through the alloy element of adjustment magnesiumalloy the surface quality of alloy is excellent, is suitable for preparing matt surface;
3) finished product superior, tensile strength reaches 280-320MPa, and unit elongation reaches 8-10%, and earing rate is reduced to 1～3%, and the mean strain ratio reaches 1.2～1.6; Improve the sticking power of magnesium alloy thin strip finish coatings, improved the coating performance of strip.
Embodiment
Embodiment one
A kind of handset shell is with the preparation method of the inferior light strip of magnesiumalloy, and said preparation method comprises the steps:
1) by weight percentage, said magnesiumalloy contains 0.5% Mn, 1.5% Si, 0.8% yttrium, 1.2% Cu, 0.3% Zn and the Mg mixing founding of surplus, makes magnesium alloy ingot;
2) magnesium alloy ingot is heated to 600 ℃, insulation homogenizing annealing 6h;
3) before the hot rolling magnesium alloy ingot is heated to 450 ℃, insulation 5h is hot-rolled down to 6mm with magnesium alloy ingot then, batches and makes the magnesiumalloy coils of hot rolled;
4) it is cold rolling the magnesiumalloy coils of hot rolled to be carried out multi-pass, and the cold rolling use laser roughening roller of final passage is rolled, and the cold roling reduction of final passage is 8%, and final rolling thickness is 0.8mm,
5) heating of metal temperature to 280 ℃ in lehre, insulation 3.5h promptly obtains aluminum alloy matt plate.
Embodiment two
A kind of handset shell is with the preparation method of the inferior light strip of magnesiumalloy, and said preparation method comprises the steps:
1) by weight percentage, said magnesiumalloy contains 0.8% Mn, 0.8% Si, 1.2% yttrium, 0.8% Cu, 0.8% Zn and the Mg mixing founding of surplus, makes magnesium alloy ingot;
2) magnesium alloy ingot is heated to 615 ℃, insulation homogenizing annealing 4h;
3) before the hot rolling magnesium alloy ingot is heated to 470 ℃, insulation 3h is hot-rolled down to 8mm with magnesium alloy ingot then, batches and makes the magnesiumalloy coils of hot rolled;
4) it is cold rolling the magnesiumalloy coils of hot rolled to be carried out multi-pass, and the cold rolling use laser roughening roller of final passage is rolled, and the cold roling reduction of final passage is 15%, and final rolling thickness is 0.5mm,
5) heating of metal temperature to 310 ℃ in lehre, insulation 2h promptly obtains aluminum alloy matt plate.
Embodiment three
A kind of handset shell is with the preparation method of the inferior light strip of magnesiumalloy, and said preparation method comprises the steps:
1) by weight percentage, said magnesiumalloy contains 0.6% Mn, 1.1% Si, 1.0% yttrium, 0.9% Cu, 0.6% Zn and the Mg mixing founding of surplus, makes magnesium alloy ingot;
2) magnesium alloy ingot is heated to 610 ℃, insulation homogenizing annealing 5h;
3) before the hot rolling magnesium alloy ingot is heated to 460 ℃, insulation 4h is hot-rolled down to 7mm with magnesium alloy ingot then, batches and makes the magnesiumalloy coils of hot rolled;
4) it is cold rolling the magnesiumalloy coils of hot rolled to be carried out multi-pass, and the cold rolling use laser roughening roller of final passage is rolled, and the cold roling reduction of final passage is 10%, and final rolling thickness is 0.6mm,
5) heating of metal temperature to 300 ℃ in lehre, insulation 3h promptly obtains aluminum alloy matt plate.
Embodiment four
A kind of handset shell is with the preparation method of the inferior light strip of magnesiumalloy, and said preparation method comprises the steps:
1) by weight percentage, said magnesiumalloy contains 0.6% Mn, 1.3% Si, 0.9% yttrium, 1.1% Cu, 0.7% Zn and the Mg mixing founding of surplus, makes magnesium alloy ingot;
2) magnesium alloy ingot is heated to 605 ℃, insulation homogenizing annealing 5h;
3) before the hot rolling magnesium alloy ingot is heated to 460 ℃, insulation 4.5h is hot-rolled down to 6.5mm with magnesium alloy ingot then, batches and makes the magnesiumalloy coils of hot rolled;
4) it is cold rolling the magnesiumalloy coils of hot rolled to be carried out multi-pass, and the cold rolling use laser roughening roller of final passage is rolled, and the cold roling reduction of final passage is 12%, and final rolling thickness is 0.55mm,
5) heating of metal temperature to 300 ℃ in lehre, insulation 3h promptly obtains aluminum alloy matt plate.
Embodiment five
A kind of handset shell is with the preparation method of the inferior light strip of magnesiumalloy, and said preparation method comprises the steps:
1) by weight percentage, said magnesiumalloy contains 0.7% Mn, 1.4% Si, 1.1% yttrium, 1.0% Cu, 0.4% Zn and the Mg mixing founding of surplus, makes magnesium alloy ingot;
2) magnesium alloy ingot is heated to 610 ℃, insulation homogenizing annealing 5.5h;
3) before the hot rolling magnesium alloy ingot is heated to 46 ℃, insulation 4.5h is hot-rolled down to 6mm with magnesium alloy ingot then, batches and makes the magnesiumalloy coils of hot rolled;
4) it is cold rolling the magnesiumalloy coils of hot rolled to be carried out multi-pass, and the cold rolling use laser roughening roller of final passage is rolled, and the cold roling reduction of final passage is 9%, and final rolling thickness is 0.7mm,
5) heating of metal temperature to 290 ℃ in lehre, insulation 2.5h promptly obtains aluminum alloy matt plate.
Applicant's statement; The present invention explains detailed process equipment of the present invention and technical process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technical process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technical process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (1)
1. a handset shell is characterized in that with the preparation method of the inferior light strip of magnesiumalloy said preparation method comprises the steps:
1) by weight percentage, said magnesiumalloy contains 0.5～0.8% Mn, 0.8～1.5% Si, 0.8～1.2% yttrium, 0.8～1.2% Cu, 0.3～0.8% Zn and the Mg mixing founding of surplus, makes magnesium alloy ingot;
2) magnesium alloy ingot is heated to 600～615 ℃, insulation homogenizing annealing 4～6h;
3) before the hot rolling magnesium alloy ingot is heated to 450～470 ℃, insulation 3～5h is hot-rolled down to 6～8mm with magnesium alloy ingot then, batches and makes the magnesiumalloy coils of hot rolled;
4) it is cold rolling the magnesiumalloy coils of hot rolled to be carried out multi-pass, and the cold rolling use laser roughening roller of final passage is rolled, and the cold roling reduction of final passage is 8%～15%, and final rolling thickness is 0.5～0.8mm,
5) heating of metal temperature to 280～310 ℃ in lehre, insulation 2～3.5h promptly obtains aluminum alloy matt plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103431091A CN102337439A (en) | 2011-11-02 | 2011-11-02 | Preparation method of magnesium alloy matt thin strip for mobile phone shell |
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| CN2011103431091A CN102337439A (en) | 2011-11-02 | 2011-11-02 | Preparation method of magnesium alloy matt thin strip for mobile phone shell |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831199A (en) * | 2015-06-03 | 2015-08-12 | 山东珠峰车业有限公司 | Motor shell for oil-electricity hybrid four-wheeled vehicles and preparation process of motor shell |
| CN105080979A (en) * | 2014-05-12 | 2015-11-25 | 美铝公司 | Apparatus and method for rolling metal |
| CN105327936A (en) * | 2015-11-23 | 2016-02-17 | 武汉威华铝业有限公司 | Board machining method and board |
| CN106607470A (en) * | 2015-10-25 | 2017-05-03 | 巨贾实业（上海）有限公司 | Manufacturing technology of high elongation steel plate |
| CN106994464A (en) * | 2016-01-26 | 2017-08-01 | 中国科学院金属研究所 | A kind of cold-rolling production process of pure magnesium or magnesium alloy foil |
| US10129375B1 (en) | 2017-05-11 | 2018-11-13 | Microsoft Technology Licensing, Llc | Thin section interlock geometry for molding plastic |
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2011
- 2011-11-02 CN CN2011103431091A patent/CN102337439A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080979A (en) * | 2014-05-12 | 2015-11-25 | 美铝公司 | Apparatus and method for rolling metal |
| CN104831199A (en) * | 2015-06-03 | 2015-08-12 | 山东珠峰车业有限公司 | Motor shell for oil-electricity hybrid four-wheeled vehicles and preparation process of motor shell |
| CN104831199B (en) * | 2015-06-03 | 2016-09-07 | 山东珠峰车业有限公司 | Oil-electric hybrid power quadricycle motor casing and preparation technology thereof |
| CN106607470A (en) * | 2015-10-25 | 2017-05-03 | 巨贾实业（上海）有限公司 | Manufacturing technology of high elongation steel plate |
| CN105327936A (en) * | 2015-11-23 | 2016-02-17 | 武汉威华铝业有限公司 | Board machining method and board |
| CN106994464A (en) * | 2016-01-26 | 2017-08-01 | 中国科学院金属研究所 | A kind of cold-rolling production process of pure magnesium or magnesium alloy foil |
| US10129375B1 (en) | 2017-05-11 | 2018-11-13 | Microsoft Technology Licensing, Llc | Thin section interlock geometry for molding plastic |
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Application publication date: 20120201 |