CN104561851A - Process for heat treatment before anodization of aluminum alloy - Google Patents
Process for heat treatment before anodization of aluminum alloy Download PDFInfo
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- CN104561851A CN104561851A CN201410768445.4A CN201410768445A CN104561851A CN 104561851 A CN104561851 A CN 104561851A CN 201410768445 A CN201410768445 A CN 201410768445A CN 104561851 A CN104561851 A CN 104561851A
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- heat treatment
- temperature
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- aluminum alloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
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- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Treatment Of Metals (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention discloses a process for heat treatment before anodization of an aluminum alloy and belongs to the technical field of heat treatment processes. The process comprises the following steps: putting a clean and smooth flat plate in a heat treatment furnace in advance for placing a part; performing solid solution heat treatment, namely putting the part into a room-temperature heat treatment furnace, and heating by adopting a stage type heating manner, wherein two heating stages are performed by adopting a slow heating manner for heating from 0 DEG C to 200 DEG C at a heating rate of 2-4 DEG C/min, and then heating from 200 DEG C to 520-540 DEG C in 30 minutes; controlling the temperature between 520-540 DEG C, and keeping the temperature for 1.5-2.5 hours; and cooling in a water quenching manner. By adopting the process disclosed by the invention, a second phase collected in a material grain boundary can be uniformly dispersed in material grains, and the corrosion resistance of an anode film of the part is significantly improved. By using the process disclosed by the invention, the corrosion resistance of the anode film of an aluminum alloy material is significantly improved, and a research direction is provided for improving the corrosion resistance of anode films of other materials.
Description
Technical field
The invention belongs to technical field of heat treatment technology, particularly relate to thermal treatment process before a kind of aluminium alloy anodization.Be applicable to IC equipment (producing the production equipment special of semiconducter device, integrated circuit (IC) chip and flat-panel monitor) production heat treatment technics, relate generally to the thermal treatment professional technique method improving aluminum alloy anode film erosion resistance.
Background technology
Thermal treatment process before aluminium alloy anodization, has its special importance.Heat treating method before aluminium alloy anodization is different from the chemical treatment method before other anodizing, general chemical pre-treatment can only remove Si-Mg phases a large amount of between crystal boundary, make to form corrosion pit between grain boundaries, and Si-Mg precipitated phase cannot be made to be scattered in equably in crystal grain, thus cause expecting that the erosion resistance of anonite membrane is very poor.
Summary of the invention
For the technical problem of above-mentioned existence, be scattered in equably in grain boundaries to make the precipitated phase between aluminum alloy materials crystal boundary, the erosion resistance of aluminium alloy anode oxide film is fundamentally provided, and provides certain reference method for improving other material anonite membrane corrosion resistance nature.The object of this invention is to provide thermal treatment process before a kind of aluminium alloy anodization.It can improve the erosion resistance of anonite membrane after material anodizing significantly.
The object of the invention is to be achieved through the following technical solutions:
Thermal treatment process before a kind of aluminium alloy anodization of the present invention, comprises the steps:
(1) in heat treatment furnace, place the flat board of totally smooth placement part in advance;
(2) solution heat treatment: part is put into the heat treatment furnace that temperature is room temperature, adopt the mode of stage intensification to heat, the temperature rise period is divided into two sections: rise to from 0 DEG C the mode adopting the process of 200 DEG C and slowly heat up, temperature rise rate is 2-4 DEG C/min; Then in 30min, temperature is risen to solidification treatment temperature 520-540 DEG C by 200 DEG C;
(3) temperature controls at 520-540 DEG C, insulation 1.5-2.5H;
(4) water quenching method cooling.
Further, transport velocity during described shrend is 5-15s.
Further, described water quenching technology is that part is carried out shrend perpendicular to tank.
The invention has the beneficial effects as follows:
1. the present invention can make the second-phase be gathered between grain boundaries be dispersed in material grains, significantly improves the erosion resistance of part anode film.
2. invention significantly improves the erosion resistance of aluminum alloy materials anonite membrane also for the erosion resistance improving other material anonite membrane provides research direction.
accompanying drawing illustrates:
Fig. 1 is the metallurgical analysis picture of raw material of aluminum alloy 1.
Fig. 2 is the metallurgical analysis picture of raw material of aluminum alloy 1 after solution heat treatment.
Fig. 3 is the metallurgical analysis picture of raw material of aluminum alloy 2.
Fig. 4 is the metallurgical analysis picture of raw material of aluminum alloy 2 after solution heat treatment.
In figure in red circle mark be part precipitated phase in material, in Fig. 1, Fig. 3, material surface precipitated phase is more, and majority is distributed between crystal boundary; Comparatively speaking, in Fig. 2,4 precipitated phase less, comparatively disperse, and majority is dissolved in lattice.
Embodiment
Describe the present invention below in conjunction with embodiment.
Embodiment 1: thermal treatment process before aluminium alloy anodization of the present invention, comprises the steps:
(1) for avoiding gritty particle in heat treatment process to be diffused in part, making piece surface produce defect, placing totally smooth flat board in advance and carry pending part in heat treatment furnace, this example selects thickness at the aluminum alloy plate materials of 300mm;
(2) solution heat treatment: part is put into the heat treatment furnace that temperature is room temperature, the mode of stage intensification is adopted to heat, temperature rise period is divided into two sections: rise to from 0 DEG C the mode adopting the process of 200 DEG C and slowly heat up, temperature rise rate is 2-4 DEG C/min, in case temperature raises too fast, part noumenon is caused to be heated uneven; Then in 30min, temperature is risen to solution heat treatment temperature by 200 DEG C, solution heat treatment temperature is 530 DEG C;
(3) 2H is incubated;
(4) water quenching method cooling.Transport velocity during described shrend is 10s, again separates out on crystal boundary to prevent second phase particles.Described water quenching technology is that part is carried out shrend perpendicular to tank, to prevent part generation gross distortion.
Embodiment 2: this example as different from Example 1: the stage heating mode of solution heat treatment in this example: the temperature rise period is divided into two sections: rise to the mode adopting the process of 200 DEG C and slowly heat up from 0 DEG C, temperature rise rate is 2-4 DEG C/min, then in 30min, temperature is risen to solution heat treatment temperature 520 DEG C by 200 DEG C; Insulation 1.5H; The transport velocity of shrend during cooling is 5s.
Embodiment 3: this example as different from Example 1: the mode of the stage intensification of solution heat treatment in this example: the temperature rise period is divided into two sections: rise to the mode adopting the process of 200 DEG C and slowly heat up from 0 DEG C, temperature rise rate is 2-4 DEG C/min, then in 30min, temperature is risen to solution heat treatment temperature 540 DEG C by 200 DEG C; Insulation 2.5H; The transport velocity of shrend during cooling is 15s.
Embodiment 4: this example as different from Example 1: the mode of the stage intensification of solution heat treatment in this example: the temperature rise period is divided into two sections: rise to the mode adopting the process of 200 DEG C and slowly heat up from 0 DEG C, temperature rise rate is 2-4 DEG C/min, then in 30min, temperature is risen to solution heat treatment temperature 525 DEG C by 200 DEG C; Insulation 2.2H; The transport velocity of shrend during cooling is 6s.
Claims (3)
1. a thermal treatment process before aluminium alloy anodization, is characterized in that: comprise the steps:
(1) in heat treatment furnace, place the flat board of totally smooth placement part in advance;
(2) solution heat treatment: part is put into the heat treatment furnace that temperature is room temperature, adopt the mode of stage intensification to heat, the temperature rise period is divided into two sections: rise to from 0 DEG C the mode adopting the process of 200 DEG C and slowly heat up, temperature rise rate is 2-4 DEG C/min; Then in 30min, temperature is risen to solidification treatment temperature 520-540 DEG C by 200 DEG C;
(3) temperature controls at 520-540 DEG C, insulation 1.5-2.5H;
(4) water quenching method cooling.
2. according to thermal treatment process before aluminium alloy anodization according to claim 1, it is characterized in that: transport velocity during described shrend is 5-15s.
3. according to thermal treatment process before aluminium alloy anodization according to claim 1, it is characterized in that: described water quenching technology is that part is carried out shrend perpendicular to tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410768445.4A CN104561851B (en) | 2014-12-11 | 2014-12-11 | Process for heat treatment before anodization of aluminum alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410768445.4A CN104561851B (en) | 2014-12-11 | 2014-12-11 | Process for heat treatment before anodization of aluminum alloy |
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| Publication Number | Publication Date |
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| CN104561851A true CN104561851A (en) | 2015-04-29 |
| CN104561851B CN104561851B (en) | 2017-02-22 |
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| CN201410768445.4A Active CN104561851B (en) | 2014-12-11 | 2014-12-11 | Process for heat treatment before anodization of aluminum alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359867A (en) * | 2018-04-09 | 2018-08-03 | 北京北方车辆集团有限公司 | A kind of ZYAlCu5MnTiA high is tough aluminium alloy and its heat treatment method |
| CN112144087A (en) * | 2019-06-26 | 2020-12-29 | 比亚迪股份有限公司 | Aluminum alloy part, preparation method thereof and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148744A (en) * | 2007-11-05 | 2008-03-26 | 上海交大南洋机电科技有限公司 | Heat treatment technique for major diameter aluminum casting alloy hydraulic coupler impeller |
| CN103397287A (en) * | 2013-08-06 | 2013-11-20 | 温州天迪铝业有限公司 | Heat treatment technology of aluminum profiles |
-
2014
- 2014-12-11 CN CN201410768445.4A patent/CN104561851B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148744A (en) * | 2007-11-05 | 2008-03-26 | 上海交大南洋机电科技有限公司 | Heat treatment technique for major diameter aluminum casting alloy hydraulic coupler impeller |
| CN103397287A (en) * | 2013-08-06 | 2013-11-20 | 温州天迪铝业有限公司 | Heat treatment technology of aluminum profiles |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359867A (en) * | 2018-04-09 | 2018-08-03 | 北京北方车辆集团有限公司 | A kind of ZYAlCu5MnTiA high is tough aluminium alloy and its heat treatment method |
| CN112144087A (en) * | 2019-06-26 | 2020-12-29 | 比亚迪股份有限公司 | Aluminum alloy part, preparation method thereof and electronic equipment |
| CN112144087B (en) * | 2019-06-26 | 2021-12-07 | 比亚迪股份有限公司 | Aluminum alloy part, preparation method thereof and electronic equipment |
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| CN104561851B (en) | 2017-02-22 |
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Address after: No.18a-1, Feiyun Road, Hunnan District, Shenyang City, Liaoning Province Patentee after: Shenyang fuchuang precision equipment Co.,Ltd. Address before: 110168 no.18a-1, Feiyun Road, Hunnan New District, Shenyang City, Liaoning Province Patentee before: Shenyang Fortune Precision Equipment Co.,Ltd. |