CN105350051B - A kind of method for solving aluminum hardware surface Sn Bi alloy contaminations - Google Patents
A kind of method for solving aluminum hardware surface Sn Bi alloy contaminations Download PDFInfo
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- CN105350051B CN105350051B CN201510779991.2A CN201510779991A CN105350051B CN 105350051 B CN105350051 B CN 105350051B CN 201510779991 A CN201510779991 A CN 201510779991A CN 105350051 B CN105350051 B CN 105350051B
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- tank liquor
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- temperature
- aluminum hardware
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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
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- 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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- 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
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention is a kind of method for solving aluminum hardware surface Sn Bi alloy contaminations, it is related to a kind of method for removing aluminum hardware surface Sn Bi alloy contaminations, handled by alkali cleaning, pickling, chromic acid anodizing and filling, and reasonable step and parameter is set, the anodization layer of no Sn Bi alloy contaminations is regenerated, design requirement is met.The problem of the inventive method effectively solves aluminum hardware surface Sn Bi alloy contaminations, it is ensured that the use reliability of aluminum hardware.
Description
Technical field
It is especially a kind of to solve aluminum hardware surface Sn-Bi alloy contaminations the present invention relates to a kind of method for solving pollution
Method.
Background technology
Aircraft engine aluminum fan rectifying device, machine adds after milling is molded, and integral surface uses anodization, and according to
Design requirement is, it is necessary to carry out a point valve wire cutting to it.Because there is substantial amounts of micropore on surface after aluminium alloy anodization, Sn-Bi is closed
After gold fusing in the presence of capillary force, into surface anodization layer, the fan rectifying device exterior quality after point valve is produced
Severe contamination, and the fusing point of Sn-Bi alloys only has 135 DEG C or so, once work service temperature is more than 135 DEG C, Sn-Bi alloy meetings
Melt again, can stick to other parts surfaces under extraneous wind-force purging, produce the potential risk of dynamic balancing unstability, therefore,
The Sn-Bi alloys residual on fan rectifying device surface must be disposed, goes to solve the pollution problem currently without suitable method.
The content of the invention
It is an object of the invention to provide a kind of side for the Sn-Bi alloy contaminations for solving to produce when aluminum hardware divides valve wire cutting
Method.
The technical scheme is that, the method for removing aluminum hardware surface Sn-Bi alloy contaminations comprises the following steps：
1. by aluminum hardware be put into equipped with concentration ratio be 30~50g/L sodium carbonate, 15~25g/L sodium phosphates and 0.5~
Alkali cleaning in the alkali lye of 1.0g/L sodium metasilicate, the temperature of alkali lye is 35~85 DEG C, and the time is 1~5min, is then rinsed with clear water
More than 2min；
2. repeat above-mentioned alkaline cleaning procedure once；
3. the part after clear water is rinsed, which is put into chromatosulfuric acid washing trough liquid, carries out pickling, the temperature of tank liquor is 30~80
DEG C, chromatosulfuric acid washes the time for 1~5min, 98% concentrated sulfuric acid that described chromatosulfuric acid washing trough liquid composition is 200~350g/L, 30~
70g/L CrO3；
4. after pickling, more than 2min is rinsed using flowing cool water；
5. carrying out chromic acid anodizing, aluminum hardware is put into the CrO that concentration is 40~60g/L3Tank liquor in, tank liquor
30~50 DEG C of temperature, the chromic acid anodizing time is 30~60min；
6. in the K that concentration is 5~50g/L2Cr2O7Tank liquor in be filled processing, the temperature of tank liquor is 60~100 DEG C,
Filling time is more than 10min；
7. after end-of-fill, clear water is rinsed and dried；
8. final inspection.
The present invention is eroded by Sn-Bi alloys by taking alkali cleaning to handle the fan rectifying device for producing pollution after point valve
The anodization layer of pollution, then carries out secondary anode processing again, regenerates the anodization layer of no Sn-Bi alloy contaminations, so
Carry out secondary chromic acid anodizing, filling processing again afterwards, regenerate the anodization layer of no Sn-Bi alloy contaminations, meet design
It is required that.The problem of present invention effectively solves aluminum hardware surface Sn-Bi alloy contaminations.
Embodiment
The method for removing aluminum hardware surface Sn-Bi alloy contaminations comprises the following steps：
1. by aluminum hardware be put into equipped with concentration ratio be 30~50g/L sodium carbonate, 15~25g/L sodium phosphates and 0.5~
Alkali cleaning in the alkali lye of 1.0g/L sodium metasilicate, the temperature of alkali lye is 35~85 DEG C, and the time is 1~5min, is then rinsed with clear water
More than 2min；
2. repeat above-mentioned alkaline cleaning procedure once；
3. the part after clear water is rinsed, which is put into chromatosulfuric acid washing trough liquid, carries out pickling, the temperature of tank liquor is 30~80
DEG C, chromatosulfuric acid washes the time for 1~5min, 98% concentrated sulfuric acid that described chromatosulfuric acid washing trough liquid composition is 200~350g/L, 30~
70g/L CrO3；
4. after pickling, more than 2min is rinsed using flowing cool water；
5. carrying out chromic acid anodizing, aluminum hardware is put into the CrO that concentration is 40~60g/L3Tank liquor in, tank liquor
30~50 DEG C of temperature, the chromic acid anodizing time is 30~60min；
6. in the K that concentration is 5~50g/L2Cr2O7Tank liquor in be filled processing, the temperature of tank liquor is 60~100 DEG C,
Filling time is more than 10min；
7. after end-of-fill, clear water is rinsed and dried；
8. final inspection.
Embodiment
Certain type machine aluminum-alloy fan rectifier, material is 2A70, and asking for Sn-Bi alloy contaminations is generated when dividing valve wire cutting
Topic, after alkali cleaning, secondary anode, the Sn-Bi alloy contaminations of component surface are effectively removed.Specific method is：
1. the fan rectifying device polluted after point valve is put into concentration for sodium carbonate 40g/L, sodium phosphate 20g/L and sodium metasilicate
Alkali cleaning in 0.5g/L alkali lye, the temperature of alkali lye is 60 DEG C, and after alkali cleaning, 5min is rinsed with clear water by alkali cleaning 3min or so；
2. repeat above-mentioned alkaline cleaning procedure once；
3. point valve fan rectifying device after clear water is rinsed is put into progress chromatosulfuric acid in tank liquor and washed, chromatosulfuric acid washing trough liquid group
CrO as 98% concentrated sulfuric acid 300g/L, 55g/L3, the tank liquor temperature of configuration is 60 DEG C, and chromatosulfuric acid washes 3min；
4. after chromatosulfuric acid is washed, 5min is rinsed using flowing clear water；
5. aluminum hardware is put into the CrO that concentration is 50g/L3Tank liquor in, 40 DEG C of the temperature of tank liquor, chromic acid anodizing
Time is 55min；
6. in the K that concentration is 20g/L2Cr2O7Tank liquor in be filled processing, the temperature of tank liquor is 80 DEG C, filling time
For 35min；
7. after end-of-fill, clear water is rinsed and dried；
8. final inspection.
Assay：The Sn-Bi alloys of the noresidue of component surface, pollution is effectively removed.
Claims (1)
1. a kind of method for removing aluminum hardware surface Sn-Bi alloy contaminations, it is characterised in that described method includes following step
Suddenly：
1) it is 30~50g/L sodium carbonate, 15~25g/L sodium phosphates and 0.5~1.0g/ aluminum hardware to be put into equipped with concentration ratio
Alkali cleaning in the alkali lye of L sodium metasilicate, the temperature of alkali lye is 35~85 DEG C, and the time is 1~5min, then with clear water rinse 2min with
On；
2) above-mentioned alkaline cleaning procedure is repeated once；
3) part after clear water is rinsed, which is put into chromatosulfuric acid washing trough liquid, carries out pickling, and the temperature of tank liquor is 30~80 DEG C, chromium
Sulphur pickling time is 1~5min, and described chromatosulfuric acid washing trough liquid composition is 200~350g/L 98% concentrated sulfuric acid, 30~70g/L
CrO3；
4) after pickling, more than 2min is rinsed using flowing cool water；
5) chromic acid anodizing is carried out, aluminum hardware is put into the CrO that concentration is 40~60g/L3Tank liquor in, the temperature of tank liquor
30~50 DEG C, the chromic acid anodizing time is 30~60min；
6) in the K that concentration is 5~50g/L2Cr2O7Tank liquor in be filled processing, the temperature of tank liquor is 60~100 DEG C, filling
Time is more than 10min；
7) after end-of-fill, clear water is rinsed and dried；
8) final inspection.
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| CN201510779991.2A CN105350051B (en) | 2015-11-13 | 2015-11-13 | A kind of method for solving aluminum hardware surface Sn Bi alloy contaminations |
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| CN201510779991.2A CN105350051B (en) | 2015-11-13 | 2015-11-13 | A kind of method for solving aluminum hardware surface Sn Bi alloy contaminations |
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| CN105350051A CN105350051A (en) | 2016-02-24 |
| CN105350051B true CN105350051B (en) | 2017-08-08 |
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| CN111826697A (en) * | 2020-07-08 | 2020-10-27 | 青岛诚悦电气设备有限公司 | Electroplating pretreatment method of 6061 type aluminum alloy electrode |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3666638A (en) * | 1970-04-21 | 1972-05-30 | Sidney Levine | Process for anodizing aluminum materials |
| CN1352321A (en) * | 2001-10-31 | 2002-06-05 | 沈阳黎明航空发动机集团公司 | Solution for removing containmanted titanium alloy layers |
| CN1743508A (en) * | 2005-09-21 | 2006-03-08 | 中国海洋大学 | Chemical etching solution for titanium and titanium alloy |
| CN102978631A (en) * | 2011-09-06 | 2013-03-20 | 沈阳黎明航空发动机(集团)有限责任公司 | Precise titanium alloy part re-melted layer removing method |
| CN103628114A (en) * | 2013-12-13 | 2014-03-12 | 太原工业学院 | Surface treatment method of magnesium aluminum alloy |
| CN104878390A (en) * | 2015-05-28 | 2015-09-02 | 湖州巨力铝型材有限公司 | Rapid and efficient sanding process for aluminium profile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001192867A (en) * | 2000-01-13 | 2001-07-17 | Nippon Light Metal Co Ltd | Surface treating method for aluminum material |
-
2015
- 2015-11-13 CN CN201510779991.2A patent/CN105350051B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3666638A (en) * | 1970-04-21 | 1972-05-30 | Sidney Levine | Process for anodizing aluminum materials |
| CN1352321A (en) * | 2001-10-31 | 2002-06-05 | 沈阳黎明航空发动机集团公司 | Solution for removing containmanted titanium alloy layers |
| CN1743508A (en) * | 2005-09-21 | 2006-03-08 | 中国海洋大学 | Chemical etching solution for titanium and titanium alloy |
| CN102978631A (en) * | 2011-09-06 | 2013-03-20 | 沈阳黎明航空发动机(集团)有限责任公司 | Precise titanium alloy part re-melted layer removing method |
| CN103628114A (en) * | 2013-12-13 | 2014-03-12 | 太原工业学院 | Surface treatment method of magnesium aluminum alloy |
| CN104878390A (en) * | 2015-05-28 | 2015-09-02 | 湖州巨力铝型材有限公司 | Rapid and efficient sanding process for aluminium profile |
Non-Patent Citations (1)
| Title |
|---|
| 化学方法除钛合金污染层;张叶盛 等;《航空工艺技术》;19841231;第10,33页 * |
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