CN104651826A - Method for improving binding force of priming paint on aluminum alloy parts - Google Patents
Method for improving binding force of priming paint on aluminum alloy parts Download PDFInfo
- Publication number
- CN104651826A CN104651826A CN201510038455.7A CN201510038455A CN104651826A CN 104651826 A CN104651826 A CN 104651826A CN 201510038455 A CN201510038455 A CN 201510038455A CN 104651826 A CN104651826 A CN 104651826A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- priming paint
- bonding force
- rete
- adhesive tape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
Abstract
The invention belongs to an aluminum alloy surface protection technology and in particular relates to a method for improving binding force of priming paint on aluminum alloy parts. The method comprises the following steps: uniformly polishing the surface of a machined part by using fine grit sandpaper under the condition that the tolerance of the part is not influenced and then polishing by using a sand felt so that a smooth base layer is exposed out of the surface of the part. Therefore, the lines on the surface of the part are disordered and the roughness of the base surface is improved so that a film is easily formed on the aluminum alloy base in chemical conversion treatment process, the appearance of the film layer is continuous and complete, and the binding force between the priming paint of the part and the base is effectively improved. The technology disclosed by the invention is easy to operate and low in cost, and some aircraft return parts to be repaired can be operated. Therefore, the difficulty in detaching the parts from the assembly is eliminated and the surface protection performance of the part can be improved. A protective effect which is the same as that of part dipping treatment can be achieved.
Description
Technical field
The invention belongs to aluminum alloy surface guard technology, be specifically related to a kind of method improving aluminum alloy part priming paint bonding force.
Background technology
The compensation cover plate of the 1014-1020 frame machine (goods) of XX type machine, the material of four kinds of cover plates be 7010 aluminium alloy add part.But due to aluminum alloy part use before spraying paint hand be coated with chemical conversion treatment, if the rete of chemical conversion is uneven, discontinuous, likely cause the bonding force of priming paint and matrix bad, therefore riveting dress plant site again and again there is serious depainting phenomenon.This phenomenon has had a strong impact on production schedule, has delayed the delivery progress of fuselage.
Summary of the invention
The object of the invention is: propose a kind of method that effectively can improve aluminum alloy part priming paint bonding force, reduce depainting phenomenon.
Technical scheme of the present invention is: a kind of method improving aluminum alloy part priming paint bonding force, its piece surface after machine adds is under the prerequisite not affecting part tolerance, increase and first use fine sandpaper grinding homogeneity, secondly piece surface is made to expose bright and clean base layer with the polishing of sand felt, the texture of piece surface is upset, improve the roughness of matrix surface, thus in the process of chemical conversion treatment on easy alloy matrix aluminum film forming, improve the bonding force of part paint.
The method of described raising aluminum alloy part priming paint bonding force, its detailed process is as follows:
Step 1: sample is checked and accepted
Pending aluminum alloy part surface after adding machine is checked, and guarantees without surface fracture;
Step 2: polishing
With fine sandpaper, sample is polished, remove the natural oxide film of specimen surface, expose the metallic matrix of naked leakage, then with sand felt polishing matrix surface, make matrix surface become bright and clean;
Step 3: cleaning
With organic solvent washed samples surface, remove greasy dirt and the impurity on surface;
Step 4: moisture film inspection
Be sprayed on cleaned specimen surface with deionized water, if moisture film does not break at least 30 seconds, then show that cleaning performance meets the demands;
Step 5: hand is coated with chemical conversion treatment
In often liter of deionized water, add 14.3-15.7 Ke Aluoding 1200S powder, stirred solution, until powder dissolution, then dips hand and is coated with A Luoding solution, be put in the surface of sample, keep its moistened surface 3-5min;
Step 6: cleaning
Be sprayed on cleaned specimen surface with deionized water, remove the A Luoding solution of excess surface, remove the A Luoding rete of surface porosity with clean absorbent cotton;
Step 7: natural airing.
First carry out visual testing after nature airing, require the conversion film that formed to have obvious rainbow color and outward appearance is continuous, rete is complete and do not play powder; Carry out the test of powdery rete at sample pretreating after aging 1 hour, when what use was clean does not fall the white wipe of hair, chemical conversion rete has good sticking power, and white wiper does not have variable color; Be coated with P05 priming paint in 2 hours after chemical conversion treatment, treat that paint carries out dry adhesive tape bonding force and indentation and to wet adhesive tape combining power test after dry, require that enamelled coating peeling phenomenon does not appear in the enamelled coating surface of having solidified.
The test method detailed process of described dry adhesive tape bonding force is as follows: on P05 priming paint, standardized group of width is the parallel scratches of 25.4mm, and in parallel scratches, draw the indentation of 45 degree of lines, during Continuous pressing device for stereo-pattern, 3M Pressuresensitive Tape must be affixed on cut perpendicular to parallel scratches, the length of adhesive tape sticking continues the 50mm exceeding parallel scratches, add an additional length so that finger grip, sample more than edge 5mm should be left in adhesive tape sticking position, then directly press Pressuresensitive Tape with finger, should confirm that the stickup of adhesive tape is even compact, paste position and there is no hole, hold one end of adhesive tape, with a power torn fast adhesive tape perpendicular to specimen surface, prove that the bonding force of paint and A Luoding rete is qualified if do not have enamelled coating to come off.
Advantage of the present invention is: the technology of the present invention is simple to operate, and the aircraft repair piece repaired can be needed to operate to some.Eliminate part like this and decompose the difficulty of getting off from assembly, the surfacecti proteon performance of part can also be improved.The protection effect the same with part dip treating can be reached.
Accompanying drawing explanation
Fig. 1 is the schema that the present invention improves the method for aluminum alloy part priming paint bonding force;
Fig. 2 is the bonding force test schematic diagram that the present invention improves in the method for aluminum alloy part priming paint bonding force.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
The present invention improves the method for aluminum alloy part priming paint bonding force, its piece surface is after the machining operation under the prerequisite not affecting part tolerance, increase and first use fine sandpaper grinding homogeneity, secondly piece surface is made to expose bright and clean base layer with the polishing of sand felt, the texture of piece surface is upset, improves the roughness of matrix surface, thus on alloy matrix aluminum, be easy to film forming in the process of chemical conversion treatment, rete outward appearance is continuous, complete, effectively improves the bonding force of part paint.
Select the material of 7010T7451 as sample below, the roughness of sample is at Ra1.6 μm, carry out proof test, measure hand be coated with chemical conversion rete performance (outward appearance, powdery rete, spray paint after dry, wet bonding force etc.), determine the feasibility of process program.Verified by test of many times, testing program as shown in Figure 1:
1 sample is checked and accepted
The defects such as specimen surface does not scratch, damage.If specimen surface defectiveness, it is discontinuous that the hand finally formed is coated with A Luoding rete, incomplete, can affect the bonding force of priming paint and matrix like this.
2 polishings
With No. 600 sand paper, sample is polished, expose the metallic matrix of naked leakage, then with sand felt polishing matrix surface, make matrix surface become bright and clean.
This step is very crucial, must expose the matrix of naked leakage after polishing, otherwise is not easy film very much in the process of follow-up hand painting chemical conversion treatment, the directly bonding force of impact paint and matrix.Why like this, be the surface all unusual light after adding because of machine, surface is not so coarse, and the chemical reaction on A Luo fourth 1200S and surface is very faint, and the hand painting A Luoding rete of formation is very thin, and discontinuous, imperfect.After polishing, the natural oxide film on surface eliminates, and exposes the matrix of sample, and improves the roughness of specimen surface by polishing, is coated with A Luoding chemical reaction lays a solid foundation smoothly to follow-up hand.
3 cleanings
3.1 clean up surface with organic solvent (MEK).Because after polishing, specimen surface has the greasy dirt and grinding that left behind after some machines add, and these impurity and greasy dirt must be removed totally before hand is coated with A Luoding;
3.2 touch the surface after cleaning, greasy dirt on hand can sweat can pollution plot is clean again surface.
4 deionization washings
Pending specimen surface is sprayed on, if keep moisture film within least 30 seconds, not break for previous step cleaning meets the demands with deionized water.
5 hands are coated with chemical conversion treatment
5.1 hands are coated with the preparation of chemical conversion solution
In often liter of deionized water, add 14.3-15.7 Ke Aluoding 1200S powder, stirred solution is until powder thoroughly dissolves.1 hour will be at least placed before using.
5.2 dip hand with medical absorbent cotton is coated with A Luoding solution, is put in the surface of sample, keeps its moistened surface 3-5min;
The absorbent cotton of 5.3 removal specimen surfaces.
The process that hand is coated with A Luoding is a kind of chemical reaction, and add the higher containing chromium ratio of A Luo fourth 1200S, film forming speed is very fast, so just can form a kind of complete, continuous print A Luoding rete at short notice.
6 cleanings
With washed with de-ionized water surface, rinse out residual A Luoding solution, and wipe the loose A Luoding rete of surperficial one deck gently with clean absorbent cotton.
7 seasoninies
8 hands are coated with the inspection of chemical conversion rete
8.1 outward appearance
Chemical conversion film has obvious rainbow color and outward appearance is continuous as far as possible, and rete is answered complete and should not be played powder.
8.2 powdery retes
Sample just will can carry out the test of powdery rete in aging 1 hour after treatment.When with clean do not fall the white wipe of hair time, chemical conversion rete has good sticking power, and white wiper does not have variable color.
8.3 bonding force
Be coated with P05 priming paint in 2h after chemical conversion treatment, treat that paint carries out dry adhesive tape bonding force after dry.There is not enamelled coating peeling phenomenon in the enamelled coating surface that result is being solidified.As shown in Figure 2.The test method of dry adhesive tape bonding force is the requirement groove adding 45 degree of line cuts by parallel scratches shown in Fig. 2.During Continuous pressing device for stereo-pattern, must be affixed on cut by 3M Pressuresensitive Tape perpendicular to parallel scratches, the length of adhesive tape sticking continues the 50mm exceeding parallel scratches.Add the additional length of an about 50mm so that finger grip.Sample more than edge 5mm should be left in adhesive tape sticking position.Then directly press Pressuresensitive Tape with finger, should confirm that the stickup of adhesive tape is even compact, pasting position does not have hole.Hold one end of adhesive tape, with a power torn fast adhesive tape perpendicular to specimen surface.Prove that the bonding force of paint and A Luoding rete is qualified if do not have enamelled coating to come off.
According to multiple comparison test result, use existing testing program, the requirement that hand is coated with the outward appearance of chemical conversion film, powdery inspection, bonding force all meet design and processes specification.Continuous, complete chemical conversion rete can not be formed on the surface of 7010 machine-made spares by testing the known hand of the routine painting chemical transforming process method that uses.Surface only after machine adds is under the prerequisite not affecting part tolerance, increase first with No. 600 fine sandpaper polishings, secondly piece surface is made to expose bright and clean base layer with the polishing of sand felt, made the texture on the surface of part upset by this step, but tolerance is not affected, and in the process of chemical conversion treatment, on alloy matrix aluminum, be easy to film forming, thus improve the bonding force of part paint.This plays very large effect to the repair piece of aluminium alloy anodization and chemical oxidation part, and the bonding force of the follow-up paint of the aluminum alloy part repaired by this processing method and matrix is all very good.By being coated with the testing research of chemical conversion treatment technological test to the hand of XX type cover plate 7010-T7451, effectively demonstrating the Application Areas of testing program, have certain replicability, for the application of other type is laid a solid foundation.
Claims (4)
1. one kind is improved the method for aluminum alloy part priming paint bonding force, it is characterized in that, piece surface after machine adds is under the prerequisite not affecting part tolerance, increase and first use fine sandpaper grinding homogeneity, secondly make piece surface expose bright and clean base layer with the polishing of sand felt, the texture of piece surface is upset, improves the roughness of matrix surface, thus in the process of chemical conversion treatment on easy alloy matrix aluminum film forming, improve the bonding force of part paint.
2. the method for raising aluminum alloy part priming paint bonding force according to claim 1, it is characterized in that, detailed process is as follows:
Step 1: sample is checked and accepted
Pending aluminum alloy part surface after adding machine is checked, and guarantees without surface fracture;
Step 2: polishing
With fine sandpaper, sample is polished, remove the natural oxide film of specimen surface, expose the metallic matrix of naked leakage, then with sand felt polishing matrix surface, make matrix surface become bright and clean;
Step 3: cleaning
With organic solvent washed samples surface, remove greasy dirt and the impurity on surface;
Step 4: moisture film inspection
Be sprayed on cleaned specimen surface with deionized water, if moisture film does not break at least 30 seconds, then show that cleaning performance meets the demands;
Step 5: hand is coated with chemical conversion treatment
In often liter of deionized water, add 14.3-15.7 Ke Aluoding 1200S powder, stirred solution, until powder dissolution, then dips hand with absorbent cotton and is coated with A Luoding solution, be put in the surface of sample, keep its moistened surface 3-5min;
Step 6: cleaning
Be sprayed on cleaned specimen surface with deionized water, remove the A Luoding solution of excess surface, then remove the A Luoding rete of surface porosity;
Step 7: airing.
3. the method for raising aluminum alloy part priming paint bonding force according to claim 2, is characterized in that, first carry out visual testing after natural airing, requires the conversion film that formed to have obvious rainbow color and outward appearance is continuous, and rete is complete and do not play powder; Carry out the test of powdery rete at sample pretreating after aging 1 hour, when what use was clean does not fall the white wipe of hair, chemical conversion rete has good sticking power, and white wiper does not have variable color, illustrates and does not have powdery rete to occur; Be coated with P05 priming paint in 2 hours after chemical conversion treatment, treat that paint carries out dry adhesive tape combining power test after dry, require that enamelled coating peeling phenomenon does not appear in the enamelled coating surface of having solidified.
4. the method for raising aluminum alloy part priming paint bonding force according to claim 3, it is characterized in that, the test method detailed process of dry adhesive tape bonding force is as follows: on P05 priming paint, standardized group of width is the parallel scratches of 25.4mm, and in parallel scratches, draw the indentation of 45 degree of lines, during Continuous pressing device for stereo-pattern, 3M Pressuresensitive Tape must be affixed on cut perpendicular to parallel scratches, the length of adhesive tape sticking continues the 50mm exceeding parallel scratches, add an additional length so that finger grip, sample more than edge 5mm should be left in adhesive tape sticking position, then directly press Pressuresensitive Tape with finger, should confirm that the stickup of adhesive tape is even compact, paste position and there is no hole, hold one end of adhesive tape, with a power torn fast adhesive tape perpendicular to specimen surface, prove that the bonding force of paint and A Luoding rete is qualified if do not have enamelled coating to come off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038455.7A CN104651826A (en) | 2015-01-26 | 2015-01-26 | Method for improving binding force of priming paint on aluminum alloy parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038455.7A CN104651826A (en) | 2015-01-26 | 2015-01-26 | Method for improving binding force of priming paint on aluminum alloy parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104651826A true CN104651826A (en) | 2015-05-27 |
Family
ID=53243454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510038455.7A Pending CN104651826A (en) | 2015-01-26 | 2015-01-26 | Method for improving binding force of priming paint on aluminum alloy parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104651826A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604346A (en) * | 2017-09-06 | 2018-01-19 | 中航沈飞民用飞机有限责任公司 | The processing method of a kind of aging method of chemical conversion solution and the chemical conversion solution newly prepared to sheet metal |
| CN111942613A (en) * | 2020-07-16 | 2020-11-17 | 国营芜湖机械厂 | In-situ corrosion prevention process for airplane aluminum alloy component after crack cold spraying reinforcement repair |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668169A (en) * | 2013-11-28 | 2014-03-26 | 浙江鸿峰铝业有限公司 | Surface treatment process used before coating of aluminum alloy |
-
2015
- 2015-01-26 CN CN201510038455.7A patent/CN104651826A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668169A (en) * | 2013-11-28 | 2014-03-26 | 浙江鸿峰铝业有限公司 | Surface treatment process used before coating of aluminum alloy |
Non-Patent Citations (3)
| Title |
|---|
| 曹慧明等: "航空铝合金结构表面的阿洛丁处理方法", 《航空维修与工程》 * |
| 李明祥等: "航空铝合金Alodine氧化工艺及质量控制", 《工具技术》 * |
| 韩敏等: "磷化底漆在飞机铝制零件表面的应用分析", 《中国航空学会青年科技论坛》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604346A (en) * | 2017-09-06 | 2018-01-19 | 中航沈飞民用飞机有限责任公司 | The processing method of a kind of aging method of chemical conversion solution and the chemical conversion solution newly prepared to sheet metal |
| CN111942613A (en) * | 2020-07-16 | 2020-11-17 | 国营芜湖机械厂 | In-situ corrosion prevention process for airplane aluminum alloy component after crack cold spraying reinforcement repair |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101913433B (en) | Surface treatment method for composite material blade of helicopter | |
| CN102925948B (en) | Imitated stainless steel aluminum surface treatment technology | |
| CN102879254A (en) | Hot-dipping aluminum-zinc alloy coated steel plate coating structure display method | |
| CN104651826A (en) | Method for improving binding force of priming paint on aluminum alloy parts | |
| CN101417578B (en) | Surface decoration method for stainless steel | |
| US8529747B2 (en) | Methods for repairing steel components | |
| CN102107333B (en) | Anti-splash process method for cutting special material | |
| CN106637223A (en) | Titanium alloy material polishing method | |
| CN103736638A (en) | Metal surface paint spraying quality control process | |
| KR101692960B1 (en) | Scratch Repair sticker and manufacturing method | |
| CN102205430A (en) | Method for processing surface of 3C (computer, communication and consumer) electronic product panel | |
| CN106435615A (en) | Wax solvent used for soaking and cleaning aluminum cosmetic cap | |
| CN103272752A (en) | Field patching method after damage of zinc coating of in-service power transmission tower | |
| CN102886569B (en) | Pre-treatment method and pre-treatment system for core wire of diamond wire saw | |
| CN115502070A (en) | Color register process is applied to aluminum alloy wheel hub in batches | |
| CN102319663B (en) | In-site patching method for power transmission iron tower galvanizing layer | |
| CN111954380A (en) | High-frequency plate burr-free processing method | |
| CN109778212A (en) | A kind of descaling grease with polishing effect | |
| TWI482881B (en) | The surface treatment method of the magnesium-containing substrate and the products thereof, and the polishing liquid and the coating liquid used | |
| CN112894591A (en) | Polishing process for aviation metal material | |
| CN107583842A (en) | Aluminium alloy wheel hub of vehicle surface paint gold applies technique | |
| CN101378636A (en) | Technique processing method for plating nickel on the inner and spraying paint on the outer of metal case | |
| CN116313282B (en) | Paint film defect repairing method for surface of enamelled superconducting wire | |
| CN109127338A (en) | A kind of stainless steel wire drawing technique | |
| CN109576754A (en) | The surface treatment method of non-ferrous metal workpiece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
|
| WD01 | Invention patent application deemed withdrawn after publication |