CN109338382A - Aluminium sheet chemical cleaning technology - Google Patents
Aluminium sheet chemical cleaning technology Download PDFInfo
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- CN109338382A CN109338382A CN201811247058.0A CN201811247058A CN109338382A CN 109338382 A CN109338382 A CN 109338382A CN 201811247058 A CN201811247058 A CN 201811247058A CN 109338382 A CN109338382 A CN 109338382A
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- China
- Prior art keywords
- aluminium sheet
- cleaning
- solution
- minutes
- water
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
- C23F1/36—Alkaline compositions for etching aluminium or alloys thereof
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Present invention discloses a kind of aluminium sheet chemical cleaning technologies, include the following steps: S1, bright cleaning, and bright clean solution is added into cleaning cylinder and heats, aluminium sheet is put into cleaning cylinder after impregnating and is taken out；S2, first light water bath step, aluminium sheet is cleaned with water, impregnate after take out；S3, etching step, alkaline etch solution is added into cleaning cylinder, stirs and heats, and aluminium sheet is put into cleaning cylinder, is taken out after immersion；S4, secondary light water bath step, aluminium sheet is cleaned with water, impregnate after take out；Acid clean solution & stir is added into cleaning cylinder for cleaning after S5, etching, and aluminium sheet is put into cleaning cylinder, is taken out after immersion；S6, drying step is rinsed, drying is rinsed to surface of aluminum plate.Operation of the present invention process is simple, materials are easy, and processing quality is stablized, and the production efficiency of processing enterprise is effectively promoted, is also widely portable in the surface cleaning of all kinds of aluminium alloy panels, applied widely.
Description
Technical field
The present invention relates to a kind of cleaning processes to belong to machining zero in particular to a kind of aluminium sheet chemical cleaning technology
Component process field.
Background technique
Aluminium and its alloy are because its process plastic is high, corrosion resistance is widely used in every profession and trade by force.It is well known that aluminium and its
Alloy is exposed to occur oxidation reaction in air, be allowed to one layer of fine and close aluminum oxide film of Surface Creation, and this oxidation film is
It is passively formed, it can make aluminium gold metal surface lose original gloss, although this layer of oxidation film can make aluminium gold metal surface slightly blunt
Change, but since its very thin and porosity is big, and poor mechanical property, therefore it cannot not only be effectively prevented various Jie in atmosphere
Confrontation aluminium alloy further corrodes, and can make the surface of aluminum alloy materials be more vulnerable in process greasy dirt,
The pollution of carbide causes aluminium alloy to generate many defects during subsequent processing, to influence to use.
Just because of this, in current production technology, in aluminium sheet before use, requiring by chemical cleaning, main technique
Including degreasing, alkali cleaning etc..But in current process, the process of above-mentioned technique is sufficiently complex, to greasy dirt and oxidation film
It removes unevenly, discoloration stain easily caused for zinc, iron, magnesium and other impurities is also difficult to accomplish fully erased, processing in this way
Aluminium sheet afterwards is also difficult to apply to the higher field of material requirements, such as aircraft manufacturing, superconduction cryogenic vacuum container.
In conclusion providing a kind of completely new aluminium sheet chemical cleaning work how for the defect in the presence of the prior art
Skill also just becomes current row those skilled in the art urgent problem to be solved.
Summary of the invention
In view of the prior art, there are drawbacks described above, and the purpose of the present invention is to propose to a kind of aluminium sheet chemical cleaning technologies, including
Following steps:
S1, bright cleaning, bright clean solution is added into cleaning cylinder, heats to bright clean solution, by aluminium sheet
It is taken out in investment cleaning cylinder, after impregnating；
S2, first light water bath step, aluminium sheet is cleaned with water, impregnate after take out；
Alkaline etch solution is added into cleaning cylinder and stirs, heats to alkaline etch solution, by aluminium by S3, etching step
It is taken out in plate investment cleaning cylinder, after impregnating；
S4, secondary light water bath step, aluminium sheet is cleaned with water, impregnate after take out；
Acid clean solution & stir is added into cleaning cylinder for cleaning after S5, etching, and aluminium sheet is put into cleaning cylinder, leaching
It is taken out after bubble；
S6, drying step is rinsed, aluminium sheet is rinsed using high-pressure water heating, the dirt and solution that are attached to surface of aluminum plate is residual
It stays and rinses well, then surface of aluminum plate is dried up using compressed air, until surface of aluminum plate thoroughly parches.
Preferably, in the light cleaning described in S1, the inner wall material of the cleaning cylinder is steel；The bright cleaning is molten
Liquid is the mixed solution of aluminium detergent and water, wherein the volumetric concentration of the aluminium detergent is 5% ~ 10%.
Preferably, in the light cleaning described in S1, the temperature of the light clean solution is not higher than 54 °C after heating；
The soaking time of aluminium sheet is no more than 20 minutes.
Preferably, in the light cleaning described in S1, the temperature of the light clean solution is 49 °C ~ 54 ° after heating
C；The soaking time of aluminium sheet is 3 minutes ~ 5 minutes.
Preferably, in the etching step described in S3, the inner wall material of the cleaning cylinder is steel；The alkaline etch solution is
The mixed solution of high alkalinity etchant and water, wherein the volumetric concentration of the high alkalinity etchant is 6% ~ 10%, the alkalinity erosion
The pH value of etching solution is 12.5 ~ 13.5.
Preferably, in the etching step described in S3, the temperature of the alkaline etch solution is 32 °C ~ 43 °C after heating；Aluminium
The soaking time of plate is 8 minutes ~ 12 minutes.
Preferably, after etching described in S5 in cleaning, the inner wall material of the cleaning cylinder is stainless steel or PVC；Institute
The mixed solution that acid clean solution is peracidity detergent and water is stated, wherein the volumetric concentration of the peracidity detergent is
10% ~ 15%, the pH value of the acid clean solution is less than 1.
Preferably, after etching described in S5 in cleaning, the temperature of the acid clean solution is 10 °C ~ 38 °C；Aluminium
The soaking time of plate is 4 minutes ~ 7 minutes.
Preferably, in secondary light water bath step described in the first light water bath step described in S2 and S4, when to the cleaning of aluminium sheet
Between be 5 minutes ~ 10 minutes.
Preferably, water used in S1 ~ S6 is ionized water or distilled water.
Compared with prior art, advantages of the present invention is mainly reflected in the following aspects:
Operation of the present invention process is simple, materials are easy, and processing quality is stablized, and the production effect of processing enterprise is effectively promoted
Rate is also widely portable in the surface cleaning of all kinds of aluminium alloy panels, applied widely.By the present invention treated aluminium
Alloy material does not remove heavy oil dirt, ink, buffing wax, carbonaceous deposits, grease and the workshop processing oil on surface only effectively
The spots such as dirt, and the oxide on its surface is also thoroughly removed, and aluminum alloy materials after treatment produce uniform low
Impedance glossy surface, improves surface reflectivity, avoids the generation of welding defect.In addition, the present invention is also in same domain
Other relevant issues provide reference, can carry out expansion extension on this basis, apply to other alkali washing process in field
In technical solution, there is very wide application prospect.
Just attached drawing in conjunction with the embodiments below, the embodiment of the present invention is described in further detail, so that of the invention
Technical solution is more readily understood, grasps.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention.
Specific embodiment
As shown in Figure 1, including the following steps: present invention discloses a kind of aluminium sheet chemical cleaning technology
S1, bright cleaning, bright clean solution is added into cleaning cylinder, heats to bright clean solution, by aluminium sheet
It is taken out in investment cleaning cylinder, after impregnating.
In the light cleaning described in S1, the inner wall material of the cleaning cylinder is steel.The light clean solution is aluminium
The mixed solution of detergent and water, wherein the volumetric concentration of the aluminium detergent is 5% ~ 10%.In the present embodiment, the aluminium is clear
Clean dose of selection Oakite Aluminium Cleaner NST.
The temperature of the light clean solution is not higher than 54 °C after heating, and the soaking time of aluminium sheet is no more than 20 minutes.Tool
For body, the temperature of the light clean solution is 49 °C ~ 54 °C after heating；The soaking time of aluminium sheet is 3 minutes ~ 5 minutes.
S2, first light water bath step, aluminium sheet is cleaned with water, impregnate after take out.
Alkaline etch solution is added into cleaning cylinder and stirs, heats to alkaline etch solution by S3, etching step,
Aluminium sheet is put into cleaning cylinder, is taken out after immersion.
In the etching step described in S3, the inner wall material of the cleaning cylinder is steel.The alkaline etch solution is high alkalinity
The mixed solution of etchant and water, the pH value of the alkaline etch solution are 12.5 ~ 13.5.The wherein high alkalinity etchant
Volumetric concentration is 6% ~ 10%, and in the present embodiment, the high alkalinity etchant selects Oakite 360L.
The temperature of the alkaline etch solution is 32 °C ~ 43 °C after heating, and the soaking time of aluminium sheet is 8 minutes ~ 12
Minute.
It should be noted that should slowly fall the high alkalinity etchant in the use process of the high alkalinity etchant
Enter in water or solution and start stirring, and should forbid directly to add water at this time.
S4, secondary light water bath step, aluminium sheet is cleaned with water, impregnate after take out.
Herein it should be noted that in secondary light water bath step described in the first light water bath step described in S2 and S4, to aluminium
The scavenging period of plate is 5 minutes ~ 10 minutes.
Acid clean solution & stir is added into cleaning cylinder, aluminium sheet is put into cleaning cylinder for cleaning after S5, etching
In, it is taken out after immersion.
After etching described in S5 in cleaning, the inner wall material of the cleaning cylinder is stainless steel or PVC；It is described acid clear
Clean solution is the mixed solution of peracidity detergent and water, and the pH value of the acid clean solution is less than 1.The wherein peracidity
The volumetric concentration of detergent is 10% ~ 15%, and in the present embodiment, the peracidity detergent selects Oakite Deoxidizer
LNC。
During carrying out clean to aluminium sheet, the temperature of the acid clean solution is 10 °C ~ 38 °C (without adding
Heat), the soaking time of aluminium sheet is 4 minutes ~ 7 minutes.
S6, drying step is rinsed, drying is rinsed to surface of aluminum plate.
Flushing drying step described in S6, specifically includes:
S61, rinsing step are rinsed aluminium sheet using high-pressure water heating, and the dirt for being attached to surface of aluminum plate and solution are remained
It rinses well；
S62, drying step, dry up surface of aluminum plate using compressed air, until surface of aluminum plate thoroughly parches.
It should be noted that water used in S1 ~ S6 is ionized water or distilled water.
In addition, in operation it may be noted that human skin avoids contact with the part in solution and cleaning as far as possible.And make
It uses in each step of cleaning cylinder, is required to guarantee the ventilation of working environment, and guarantee after aluminium sheet puts into cleaning cylinder, to cleaning
Cylinder is sealed.
Operation of the present invention process is simple, materials are easy, and processing quality is stablized, and the production of processing enterprise is effectively promoted
Efficiency is also widely portable in the surface cleaning of all kinds of aluminium alloy panels, applied widely.By the present invention, treated
Aluminum alloy materials do not remove heavy oil dirt, ink, buffing wax, carbonaceous deposits, grease and the workshop processing on surface only effectively
The spots such as greasy dirt, and the oxide on its surface is also thoroughly removed, and aluminum alloy materials after treatment produce uniformly
Low ESR glossy surface, improves surface reflectivity, avoids the generation of welding defect.The present invention maturely applies to surpass
In the cleaning process for leading cryogenic vacuum container aluminium flange part.
In addition, the present invention also provides reference for other relevant issues in same domain, can be opened up on this basis
Extension is stretched, and is applied in field in the technical solution of other alkali washing process, has very wide application prospect.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit and essential characteristics of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention, and any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of aluminium sheet chemical cleaning technology, which comprises the steps of:
S1, bright cleaning, bright clean solution is added into cleaning cylinder, heats to bright clean solution, by aluminium sheet
It is taken out in investment cleaning cylinder, after impregnating；
S2, first light water bath step, aluminium sheet is cleaned with water, impregnate after take out；
Alkaline etch solution is added into cleaning cylinder and stirs, heats to alkaline etch solution, by aluminium by S3, etching step
It is taken out in plate investment cleaning cylinder, after impregnating；
S4, secondary light water bath step, aluminium sheet is cleaned with water, impregnate after take out；
Acid clean solution & stir is added into cleaning cylinder for cleaning after S5, etching, and aluminium sheet is put into cleaning cylinder, leaching
It is taken out after bubble；
S6, drying step is rinsed, aluminium sheet is rinsed using high-pressure water heating, the dirt and solution that are attached to surface of aluminum plate is residual
It stays and rinses well, then surface of aluminum plate is dried up using compressed air, until surface of aluminum plate thoroughly parches.
2. aluminium sheet chemical cleaning technology according to claim 1, which is characterized in that in the light cleaning described in S1, institute
The inner wall material for stating cleaning cylinder is steel；The light clean solution is the mixed solution of aluminium detergent and water, wherein the aluminium is clear
Clean dose of volumetric concentration is 5% ~ 10%.
3. aluminium sheet chemical cleaning technology according to claim 1, which is characterized in that in the light cleaning described in S1, add
The temperature of the light clean solution is not higher than 54 °C after heat；The soaking time of aluminium sheet is no more than 20 minutes.
4. aluminium sheet chemical cleaning technology according to claim 1, which is characterized in that in the light cleaning described in S1, add
The temperature of the light clean solution is 49 °C ~ 54 °C after heat；The soaking time of aluminium sheet is 3 minutes ~ 5 minutes.
5. aluminium sheet chemical cleaning technology according to claim 1, which is characterized in that described clear in the etching step described in S3
The inner wall material for washing cylinder is steel；The alkaline etch solution is the mixed solution of high alkalinity etchant and water, wherein described high-alkali
Property etchant volumetric concentration be 6% ~ 10%, the pH value of the alkaline etch solution is 12.5 ~ 13.5.
6. aluminium sheet chemical cleaning technology according to claim 1, which is characterized in that in the etching step described in S3, after heating
The temperature of the alkaline etch solution is 32 °C ~ 43 °C；The soaking time of aluminium sheet is 8 minutes ~ 12 minutes.
7. aluminium sheet chemical cleaning technology according to claim 1, which is characterized in that after being etched described in S5 in cleaning,
The inner wall material of the cleaning cylinder is stainless steel or PVC；The acid clean solution is molten for the mixing of peracidity detergent and water
Liquid, wherein the volumetric concentration of the peracidity detergent is 10% ~ 15%, the pH value of the acid clean solution is less than 1.
8. aluminium sheet chemical cleaning technology according to claim 1, which is characterized in that after being etched described in S5 in cleaning,
The temperature of the acid clean solution is 10 °C ~ 38 °C；The soaking time of aluminium sheet is 4 minutes ~ 7 minutes.
9. aluminium sheet chemical cleaning technology according to claim 1, which is characterized in that first light water bath step and S4 described in S2
In the secondary light water bath step, the scavenging period to aluminium sheet is 5 minutes ~ 10 minutes.
10. any aluminium sheet chemical cleaning technology according to claim 1 ~ 9, it is characterised in that: water used in S1 ~ S6 is equal
For ionized water or distilled water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811247058.0A CN109338382A (en) | 2018-10-25 | 2018-10-25 | Aluminium sheet chemical cleaning technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811247058.0A CN109338382A (en) | 2018-10-25 | 2018-10-25 | Aluminium sheet chemical cleaning technology |
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| Publication Number | Publication Date |
|---|---|
| CN109338382A true CN109338382A (en) | 2019-02-15 |
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ID=65311726
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811247058.0A Pending CN109338382A (en) | 2018-10-25 | 2018-10-25 | Aluminium sheet chemical cleaning technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118580A (en) * | 2020-03-17 | 2020-05-08 | 常熟华庆汽车部件有限公司 | Electrophoresis process of automobile parts |
-
2018
- 2018-10-25 CN CN201811247058.0A patent/CN109338382A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118580A (en) * | 2020-03-17 | 2020-05-08 | 常熟华庆汽车部件有限公司 | Electrophoresis process of automobile parts |
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Application publication date: 20190215 |