CN109623668A - A kind of minimizing technology of composite material component port surface coating - Google Patents
A kind of minimizing technology of composite material component port surface coating Download PDFInfo
- Publication number
- CN109623668A CN109623668A CN201811398704.3A CN201811398704A CN109623668A CN 109623668 A CN109623668 A CN 109623668A CN 201811398704 A CN201811398704 A CN 201811398704A CN 109623668 A CN109623668 A CN 109623668A
- Authority
- CN
- China
- Prior art keywords
- composite material
- material parts
- sand
- dope layer
- coating
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/003—Removing abrasive powder out of the blasting machine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of minimizing technologies of composite material component port surface coating, with dope layer sprayed resin sand from sand-blasting machine to composite material component port surface removal composite material component port surface dope layer, the following steps are included: S1) by the composite material parts fixed placement after cleaning on the table, have the one side of dope layer upward；S2) by the dope layer of nozzle alignment composite material parts, start sand-blasting machine, with the dope layer of the resin sand removal composite material component port surface of injection, obtain coating component；S3) surface of coating component is gone in cleaning, obtains cleaning part；S4 coating) is carried out to cleaning piece surface and removes uniformity test；S5) dry.The present invention removes dope layer quickly the impact of coating, friction and shear action by resin sand, it is not easy damaged composite material part fiber, release coating layer is high-efficient, and brand-new uniform coarse surface can be provided for spraying next time, improve the binding force of coating and matrices of composite material.
Description
Technical field
The present invention relates to piece surface coating removal technology fields, and in particular to a kind of composite material component port surface coating
Minimizing technology.
Background technique
Advanced composite material is good etc. because of its unique high specific strength, high ratio modulus, heat-resisting, corrosion-resistant, endurance, stealth
Performance is used widely in fields such as aerospaces.However, composite material as airplane component, needs for a long time in high-altitude
It shuttles with ground, is subjected to the test of the environment such as burning sun, salt fog, sleet and dust storm, therefore multiple material part is required to afterwards before assembly
In surface sprayed coating, effect is anticorrosion, decoration and other such as stealthy specific functions.
The spraying of aviation coating has very strict requirements such as thickness, uniformity, closure, gloss etc., once up to not
To requiring to re-start spraying after needing to remove coating.Because of the particularity of composite material, it is not available chemical solvent removal and applies
Material, the country mainly also rests on conventional sandpaper or sander manual grinding side to the removal of composite material component port surface coating at present
Formula.But the thickness and uniformity of the method for manual grinding polishing not easy to control, remove that coating quality stability is poor, work every time
The dust environment easy to pollute that work amount is big, efficiency is lower and polish, brings healthy hidden danger to operator.More seriously, one
Denier operator controls the dynamics of bad polishing, it is most likely that the matrix and reinforcing fiber of composite material parts is polished to, to multiple material
Components matrix strength brings larger impact, and serious person will will cause scrapping for multiple material part, therefore manual grinding removal is compound
The method of material parts surface coating has biggish hidden danger, and it is good, high-efficient and do not injure multiple material part to develop a kind of stability
Coating minimizing technology it is extremely important.
Summary of the invention
The present invention is directed to the prior art, provides a kind of composite material component port surface coating quickly, safe, stable
Minimizing technology, this method removes dope layer quickly the impact of coating, friction and shear action by resin sand.It should
Method is not easy damaged composite material part fiber, and release coating layer is high-efficient, and can provide for spraying next time brand-new uniform
Coarse surface, improve coating and matrices of composite material binding force.
The present invention is achieved through the following technical solutions: a kind of minimizing technology of composite material component port surface coating, using spray
Dope layer sprayed resin sand from sand machine to composite material component port surface removal composite material component port surface dope layer, it is specific to wrap
Include following steps:
S1) on the table by the composite material parts fixed placement after cleaning, there is the one side of dope layer upward；
S2) by the dope layer of nozzle alignment composite material parts, start sand-blasting machine, remove composite material zero with the resin sand of injection
The dope layer on part surface, obtains coating component；
S3) cleaning S2) what is obtained goes to the surface of coating component, obtain cleaning part；
S4 coating removal uniformity test) is carried out to the cleaning piece surface that step S3) is obtained；
S5) dry composite material parts.
In sandblasting procedures, nozzle has the top uniform motion of dope layer along composite material parts, avoids persistently blowing a bit
Sand.
Further, in step S1), the cleaning of composite material parts is multiple using wiping without cotton for wadding cloth for solvent is impregnated with
Condensation material piece surface parks 15min ~ 20min after the completion of cleaning, keeps solvent volatilization complete.
The solvent is that isopropanol, acetone, ethyl alcohol are any one or more of.
Further, the workbench is the hollow out platform that size is greater than composite material parts size, for being composite wood
Material part provides stable support.The workbench is the hollow out platform for being provided with several hollow holes, and hollow hole is for being discharged
Coating powder and resin sand gravel avoid coating powder and resin sand gravel from accumulating on the table.
Further, in step S2), the nozzle inclination setting, and acute angle is formed with composite material component port surface,
Angle is preferably 50 ~ 70 °, and nozzle is 50 ~ 160mm at a distance from composite material component port surface.
Further, the resin sand is pollopas sand, melamine resin sand, polyamide sand, polycarbonate
Any one of resin sand, the type and partial size of the resin sand can be adjusted according to the hardness of dope layer, thickness；It needs
The dope layer hardness and thickness removed are bigger, then the resin sand that the partial size that can choose is larger, hardness is bigger.
Further, the step S3) it specifically includes:
S31) composite material component port surface residual sand grains is blown away with anhydrous oil-free compressed air；
S32 composite material component port surface) is cleaned using the dust catcher with vacuum hairbrush, removes in sandblasting procedures and generates dope layer
Powder；
S33) pure water is rinsed composite material parts, completes the composite material parts cleaning for eliminating dope layer.
Further, the step S4) in, the method that coating removes uniformity test is to impact composite material using pure water
Surface, by checking that the uniformity of dope layer removal is verified in the continuous Chengdu of moisture film.If pure water impacts what composite material surface was formed
Moisture film is continuous, then the dope layer removal of composite material component port surface is complete, the composite material parts coarse surface uniformity of generation
It is good；If the moisture film formed is discontinuous, composite material component port surface dope layer removes the composite material zero not exclusively or generated
Part coarse surface uniformity is poor, can again to composite material component port surface sprayed resin sand by way of remove remaining coating
Layer generates uniform composite material parts coarse surface, provides for the subsequent sprayed coating again of composite material parts good
Composite material parts matrix.
Further, the step S5) in, using the baking oven or autoclave heat drying composite material zero for having circulation air
Part surface evaporates the moisture of composite material component port surface, obtains the clean and dry composite material parts for eliminating dope layer.
Further, the drying temperature of the composite material parts is 60 ~ 80 DEG C, guarantees the items of composite material parts
It can be not compromised.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
(1) a kind of minimizing technology of composite material component port surface coating provided by the present invention is using sand-blasting machine sprayed resin sand
Method go out composite material component port surface dope layer, it can be achieved that the part successively removal of piece surface paint layer or whole removal,
The disadvantages of grinding depth that traditional-handwork polishing occurs is uncontrollable, and polishing is uneven and easy damaged answers material part is avoided, is guaranteed
The uniformity of coating removal.
(2) minimizing technology of a kind of composite material component port surface coating provided by the present invention, it is easy to operate, by sandblasting
Resin sand is ejected on multiple material part dope layer by machine, it is only necessary to an operator can quickly complete that structure is complicated and size compared with
The removal of big piece surface dope layer, substantially increases the efficiency of dope layer removal.
(3) a kind of minimizing technology of composite material component port surface coating provided by the present invention is removing multiple material surface coating
Sand grains can be roughened multiple material surface while layer, form one layer of new fine and close binder course, enhance the subsequent coating sprayed again
With the binding force of multiple material matrix.
Detailed description of the invention
Fig. 1 is the operation chart of the minimizing technology of composite material component port surface coating of the invention；
Fig. 2 is the structural schematic diagram of workbench in the present invention；
Fig. 3 is the surface topography of composite material parts after sandblasting in the present invention；
Wherein: 1-sand-blasting machine, 2-nozzles, 3-resin sands, 4-dope layers, 5-composite material parts, the combination of 51-roughening
Layer, 6-workbench, 61-hollow holes.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Heretofore described composite material parts 5 are common composite material parts, including metal or nonmetallic composite wood
The type of material, composite material parts 5 can be common covering, beam, rib, rib etc..With fiber-reinforced resin base in the present embodiment
For the removal of composite material component port surface coating layer surface.
The sand-blasting machine 1 is existing commercially available sand-blasting machine.
The minimizing technology of a kind of composite material component port surface coating disclosed by the invention, using following equipment: for placing
Workbench 6, sand-blasting machine 1 and the nozzle 2 being connect with sand-blasting machine 1 of composite material parts 5.The size of the workbench 6 is greater than multiple
The size of condensation material part 5, and the hollow hole 61 that several diameters are greater than resin sand 3 is set on the workbench 6, as shown in Fig. 2,
The coating powder and resin sand 3 formed during being removed for dope layer 4 is discharged from the hollow hole 61 of workbench 6, keeps away
Exempt from coating powder and resin sand 3 to accumulate on composite material parts 5 and workbench 6, influences subsequent sandblasting effect.
The nozzle 2 is inclined at one end of the top of composite material parts 5 to be processed, and it is also right in sandblasting procedures to make
The coating powder and resin sand 3 of the generation of sandblasting have certain blast effect, are deposited in resin sand 3 and coating powder not
Except 4 place of dope layer, sandblasting effect is influenced.
The removal of its dope layer 4 specifically includes the following steps:
S1 5 surface of composite material parts to be processed) is wiped without cotton for wadding cloth using be impregnated with solvent, cleans composite material parts
Dust, grease and the other impurities on 5 surfaces after wiping, park about 15 ~ 20min, after solvent volatilization completely, after cleaning
5 fixed placement of composite material parts makes to have the one side of dope layer 4 upward on the workbench 6 of hollow out.
S2 the pressure for) adjusting sand-blasting machine 1 is 1 ~ 4bar, and nozzle 2 is adjusted to the dope layer of alignment composite material parts 5
4, make the angle on nozzle 2 and 5 surface of composite material parts in the range of 50 ~ 70 °, and nozzle 2 and 5 surface of composite material parts
Distance in the range of 50 ~ 160mm, then start sand-blasting machine 1, resin sand 3 sprays from nozzle 2 successively, utilizes resin sand 3
Impact force, gradually impact, remove 5 surface of composite material parts dope layer 4, and 5 surface of composite material parts formed one
The binder course 51 of the new roughening of layer, as shown in Figure 1, Figure 3；In sandblasting procedures, nozzle 2 is kept along 5 surface of composite material parts
The binder course 51 of uniform motion, the roughening for making the removal of dope layer 4 completely and being formed is uniform.
S3) cleaning S2) what is obtained goes to the surface of coating component, obtain cleaning part；
S31) 5 remained on surface resin sand 3 of composite material parts is blown away with anhydrous oil-free compressed air；
S32 5 surface of composite material parts) is cleaned using the clean dust catcher with vacuum hairbrush, removes and is produced in sandblasting procedures
Raw 4 powder of dope layer and 3 grains of sand of resin sand；
S33) pure water is rinsed composite material parts 5, and the composite material parts 5 for completing to eliminate dope layer 4 clean.
S4 coating removal uniformity test) is carried out to the cleaning piece surface that step S3) is obtained.The coating removal is uniform
Property test using pure water impact composite material parts 5 eliminate dope layer 4 surface method test, by check moisture film it is continuous
Verify the uniformity that dope layer 4 removes in Chengdu.
Its specific operating procedure are as follows: the composite material parts 5 that cleaning is completed in step S33) are placed vertically, are then used
Pure water impact composite material parts 5 eliminate the one side of dope layer 4, and whether observation 5 surface of composite material parts occurs continuously
Moisture film.If pure water impacts, the moisture film that composite material surface is formed is continuous, and the dope layer 4 on 5 surface of composite material parts has removed
Entirely, the 5 coarse surface uniformity of composite material parts of generation is good；If the moisture film formed is discontinuous, 5 surface of composite material parts
Dope layer 4 removes not exclusively or the 5 coarse surface uniformity of composite material parts of generation is poor, can be by again to composite material
The mode of 5 surface sprayed resin sand 3 of part removes remaining dope layer 4 or generates uniform 5 roughening table of composite material parts
Face provides good 5 matrix of composite material parts for the subsequent sprayed coating again of composite material parts 5.
S5) dry composite material parts 5.
Dope layer 4 is removed into complete composite material parts 5 and is placed in the clean baking oven or autoclave for having circulation air
In be dried, guarantee composite material parts 5 drying temperature it is controllable.Preferably, temperature in baking oven and autoclave is controlled not
More than 80 DEG C, guarantee that the properties of composite material parts 5 are not compromised, preferably between 60 ~ 75 DEG C.
The solvent of the no cotton for wadding cloth dipping is that isopropanol, acetone, ethyl alcohol are any one or more of, preferably acetone.
The resin sand 3 is pollopas sand, in melamine resin sand, polyamide sand, polycarbonate resin sand
It is any, the type and partial size of the resin sand 3 can be adjusted according to the hardness of dope layer 4, thickness；The painting for needing to remove
4 hardness of the bed of material and thickness are bigger, then the resin sand 3 that the partial size that can choose is larger, hardness is bigger.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (10)
1. a kind of minimizing technology of composite material component port surface coating, which is characterized in that use sand-blasting machine (1) to composite material zero
The dope layer (4) on removal composite material parts (5) surface of dope layer (4) the sprayed resin sand (3) on part (5) surface, it is specific to wrap
Include following steps:
S1 composite material parts (5) fixed placement after cleaning) there is into the one side of dope layer (4) upward on workbench (6)；
S2) by the dope layer (4) of nozzle (2) alignment composite material parts (5), start sand-blasting machine (1), with the resin sand of injection
(3) dope layer (4) for removing composite material parts (5) surface, obtains coating component；
S3) cleaning S2) what is obtained goes to the surface of coating component, obtain cleaning part；
S4 coating removal uniformity test) is carried out to the cleaning piece surface that step S3) is obtained；
S5) dry composite material parts (5).
2. a kind of minimizing technology of composite material component port surface coating according to claim 1, it is characterised in that: in step
S1 in), composite material parts (5) cleaning using be impregnated with solvent without cotton for wadding cloth wipe composite material parts (5) surface, clearly
15min ~ 20min is parked after the completion of clean, keeps solvent volatilization complete.
3. a kind of minimizing technology of composite material component port surface coating according to claim 2, it is characterised in that: described molten
Agent is that isopropanol, acetone, ethyl alcohol are any one or more of.
4. a kind of minimizing technology of composite material component port surface coating according to claim 1, it is characterised in that: the work
Making platform (6) is the hollow out platform that size is greater than composite material parts (5) size.
5. a kind of minimizing technology of composite material component port surface coating according to claim 1, it is characterised in that: in step
S2 in), the angle on the nozzle (2) and composite material parts (5) surface is 50 ~ 70 °, nozzle (2) and composite material parts (5)
The distance on surface is 50 ~ 160mm.
6. a kind of minimizing technology of composite material component port surface coating according to claim 1, it is characterised in that: the tree
Rouge sand (3) is any one of pollopas sand, melamine resin sand, polyamide sand, polycarbonate resin sand.
7. a kind of minimizing technology of composite material component port surface coating according to claim 1, it is characterised in that: the step
Rapid S3) it specifically includes:
S31) composite material parts (5) remained on surface sand grains is blown away with anhydrous oil-free compressed air；
S32 composite material parts (5) surface) is cleaned using the dust catcher with vacuum hairbrush；
S33) pure water is rinsed composite material parts (5).
8. a kind of minimizing technology of composite material component port surface coating according to claim 1, it is characterised in that: the step
Rapid S4) in, coating remove uniformity test method be using pure water impact composite material surface, by check moisture film continuously at
All uniformities of verifying coating removal.
9. a kind of minimizing technology of composite material component port surface coating according to claim 1, it is characterised in that: the step
Rapid S5) in, using the baking oven or autoclave heat drying composite material parts (5) surface for having circulation air.
10. a kind of minimizing technology of composite material component port surface coating according to claim 9, it is characterised in that: described
The drying temperature of composite material parts (5) is 60 ~ 80 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811398704.3A CN109623668A (en) | 2018-11-22 | 2018-11-22 | A kind of minimizing technology of composite material component port surface coating |
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| CN201811398704.3A CN109623668A (en) | 2018-11-22 | 2018-11-22 | A kind of minimizing technology of composite material component port surface coating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732978A (en) * | 2019-11-07 | 2020-01-31 | 西安交通大学 | sandblasting layer stripping method for removing damaged environmental barrier coating by combination of hammering and cutting |
| CN111673622A (en) * | 2020-06-01 | 2020-09-18 | 江苏佰健环保科技有限公司 | Environment-friendly cleaning process and equipment for food utensil non-stick coating |
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Application publication date: 20190416 |