CN117301597A - Preparation method of metal panel acoustic liner - Google Patents
Preparation method of metal panel acoustic liner Download PDFInfo
- Publication number
- CN117301597A CN117301597A CN202311074125.4A CN202311074125A CN117301597A CN 117301597 A CN117301597 A CN 117301597A CN 202311074125 A CN202311074125 A CN 202311074125A CN 117301597 A CN117301597 A CN 117301597A
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- CN
- China
- Prior art keywords
- metal
- adhesive
- panel
- plate
- rubber
- Prior art date
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- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 88
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims abstract description 60
- 230000001070 adhesive effect Effects 0.000 claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 239000003292 glue Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 229920001971 elastomer Polymers 0.000 claims description 29
- 230000001680 brushing effect Effects 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000005498 polishing Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000007731 hot pressing Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000009461 vacuum packaging Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 239000006082 mold release agent Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000004806 packaging method and process Methods 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a preparation method of a metal panel acoustic liner, and belongs to the technical field of aviation material molding. The method comprises the following steps of preparing a plugging plate, preparing a co-glue metal perforated plate, and performing glue joint molding to obtain the metal panel acoustic liner. According to the invention, the hole site on the metal perforated plate is plugged by manufacturing the plugging plate on the metal perforated plate, after the hole site on the metal perforated plate is plugged, the adhesive is coated on the cementing surface of the metal perforated plate, so that the adhesive is effectively prevented from flowing into the hole site in the smearing process, and secondly, after the adhesive is dried, the plugging plate is removed, and the adhesive at the hole site of the metal perforated plate is removed while the plugging plate is removed, so that the plugging rate of the adhesive in the hole site of the metal perforated plate is effectively prevented from being plugged in the hole of the perforated plate during cementing and curing, the cementing plugging rate of acoustic lining parts is reduced, the yield of the parts is improved, and the production cost is reduced.
Description
Technical Field
The invention belongs to the technical field of aviation material molding, and particularly relates to a preparation method of a metal panel acoustic liner.
Background
With the rapid development of civil aviation, the noise problem is more and more emphasized, the noise standard of the civil aircraft is more and more strict, and the noise level of the aircraft is one of the important contents of airworthiness evidence. Among them, engine noise is one of the main sources of aircraft noise, which consists of turbine noise, jet noise, combustion noise, fan noise, and compressor noise, which affect passengers and pilots. In engine noise control, acoustic liners are an effective means of noise reduction.
Considering that the adhesive can block the through holes of the perforated panel in the curing process of the acoustic lining part, the adhesive film type adhesive with poor fluidity is generally used for the bonding of the perforated panel of the acoustic lining part and the honeycomb core, but the adhesive film type adhesive is used for the bonding of the metal perforated panel and the honeycomb core, the bonded surface of the metal perforated panel needs to be anodized, and the like, so that the efficiency is low and the cost is increased. The metal perforated panel and the honeycomb core are glued by using the glue solution type adhesive, and special treatment is not needed for the metal perforated panel, so that the problem that the noise reduction lining part of the honeycomb sandwich metal panel needs to be solved by removing the adhesive in the holes on the basis that the glue solution type adhesive is uniformly smeared is solved.
Disclosure of Invention
The invention aims to: the preparation method of the metal panel acoustic liner solves the problems existing in the prior art.
The technical scheme is as follows: a preparation method of a metal panel acoustic liner comprises the following steps:
A. preparing a plugging plate:
cutting rubber with the same size as the perforated panel, smearing a release agent on the rubber, drying the rubber to obtain a film brushing rubber, smearing a release agent on a non-glued surface of the metal perforated panel, drying the non-glued surface of the metal perforated panel to obtain a film brushing panel, sequentially paving the film brushing panel and the film brushing rubber on a flat tool, packaging, vacuumizing the film brushing panel and the film brushing rubber, placing the flat tool into an autoclave for prepressing, and forming a plugging plate on the metal perforated panel, wherein the non-glued surface of the film brushing panel is contacted with the film brushing rubber;
B. preparation of Co-glue Metal perforated plate
Polishing the cementing surface of the metal perforated panel on the plugging plate in the step A, polishing to obtain a polished surface, cleaning and drying the polished surface, coating an adhesive on the polished surface, standing in a constant temperature environment to enable the adhesive to be dried to form an adhesive surface, removing the plugging plate, and taking out the adhesive at the metal perforation hole site to obtain a co-adhesive metal perforated plate with the adhesive surface;
C. and (3) glue joint forming:
placing the honeycomb core glued with the back plate on a flat plate tool, placing the co-glue metal perforated plate in the step B on the honeycomb core, and then carrying out vacuum packaging and hot-press molding on the honeycomb core to obtain a metal panel acoustic liner; the adhesive surface is positioned between the co-adhesive metal perforated plate and the contact surface of the honeycomb core.
Preferably, in step A, the rubber is a multilayer silicone rubber having a thickness of 2-4mm.
Preferably, in the step A, the autoclave is hot pressed for at least 60min at the hot pressing temperature of 140-190 ℃ and the pressure of 0.27-0.65 mpa.
Preferably, in the step B, the metal perforated panel is polished by a pneumatic polisher for at least 150 meshes until the polished surface is uniform.
Preferably, in the step B, the mixture is kept stand in a constant temperature environment at 18-26 ℃ for 30-35min.
Preferably, in the step B, the adhesive is a liquid adhesive. Preferably, in the step B, the plugging plate is removed in one-step mode by pulling along one direction, then pulling upwards, and pulling at a constant speed along the length or width direction of the metal plate in an inclined manner, so that rubber at the hole site is prevented from being broken and left in the hole site under the influence of transverse extrusion of the metal plate hole.
Preferably, in the step C, the hot pressing condition is that the curing temperature is 82-93 ℃, the heat preservation time is 120-130min, and the pressure of 0.5-0.1 MPa is applied.
Preferably, in step a, the release agent is applied at least 5 layers.
The beneficial effects are that: the invention relates to a preparation method of a metal panel acoustic liner, which comprises the steps of manufacturing a plugging plate on a metal perforated plate, plugging a hole site on the metal perforated plate through the plugging plate, coating an adhesive on a cementing surface of the metal perforated plate after the hole site on the metal perforated plate is plugged, effectively avoiding the adhesive from flowing into the hole site in a smearing process, and secondly, removing the plugging plate after the adhesive is dried.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a block-aperture plate package structure of the present invention;
fig. 3 is a structure diagram of a glue-bonded package of the present invention.
The reference numerals in fig. 2 to 3 are: 1. brushing rubber; 2. brushing a film panel; 3. hole sites; 4. packaging; 5. a honeycomb core; 6. co-glue metal perforated plate; 7. an adhesive surface; 8. flat plate tooling.
Detailed Description
As shown in fig. 1 to 3, a method for manufacturing a metal panel acoustic liner includes the steps of:
A. preparing a plugging plate:
cutting rubber with the same size as a metal perforated plate, wherein the rubber adopts silicon rubber with two layers, the thickness of the silicon rubber is 2-4mm, after the rubber is cut, coating a release agent on the rubber, wherein the release agent is coated with at least 5 layers, so that when the rubber is removed, the rubber and the metal perforated plate are solidified and adhered, the brush film rubber 1 is obtained after the release agent is dried, the non-adhesive surface of the metal perforated plate is coated with the release agent, the brush film panel 2 is obtained after the release agent is dried, the brush film panel 2 and the brush film rubber 1 are sequentially paved on a flat plate tool 8, packaging 4 is vacuumized and placed into an autoclave for prepressing, a pore blocking plate is formed on the metal perforated plate, wherein the packaging 4 can adopt materials such as a separation film, a ventilated felt, a vacuum bag and the like for packaging 4, and when the brush film panel 2 is sequentially paved with the brush film rubber 1, the non-adhesive surface of the brush film panel is contacted with the brush film rubber 1 for paving;
B. preparation of Co-glue Metal perforated plate 6
Polishing the adhesive joint surface of the metal perforated panel on the plugging plate in the A, polishing to obtain a polished surface, cleaning the polished surface by using acetone after polishing, and smearing an adhesive on the polished surface after cleaning, wherein the adhesive adopts a liquid adhesive, the adhesive is removed in a constant temperature environment with the temperature of 18-26 ℃ for 30-35min, the plugging plate is removed after the adhesive is dried to form an adhesive surface 7, if the adhesive adopts a solid adhesive, when the plugging plate is removed, due to the characteristic of the viscosity of the adhesives, when the plugging plate is removed, the adhesive at the edge of a hole site is removed because of the removal of the plugging plate, the situation that the adhesive does not exist at the edge of the hole site is caused, in order to avoid the problem, in the embodiment, the adhesive is fixed in the process of removing the plugging plate, the adhesive positioned in the hole site is removed, the adhesive is not influenced, the plugging plate can be removed in a smooth mode along one direction, and the metal plugging plate is removed in a mode of removing the hole site along the same direction, and the metal plugging plate is removed at the same time, and the metal plugging plate is removed at the 3, and the metal plugging plate is removed at the same time, and the metal plugging plate is removed at the hole site, and the metal plugging plate is at the hole site at the 3, and the metal plugging plate is removed at the hole site at the same time at the same uniform speed, and the metal plugging plate removing position, and the metal plugging plate at the hole site at the metal plugging plate 3;
C. and (3) glue joint forming:
placing the honeycomb core 5 glued with the back plate on a flat plate tool 8, placing the co-glued metal perforated plate 6 prepared in the step B on the honeycomb core 5, vacuum packaging the honeycomb core 4, applying pressure of 0.5-0.1 MPa at the curing temperature of 82-93 ℃, and hot-pressing the honeycomb core for 120-130min to obtain the metal panel acoustic liner through hot-press molding; wherein the adhesive surface 7 is positioned between the contact surface of the co-adhesive metal perforated plate 6 and the honeycomb core 5.
By arranging the form of the plugging plate on the non-glued joint surface of the metal perforated plate, plugging the hole site 3 of the metal hole site 3 plate and gluing the glued joint surface of the metal hole site 3 plate, at the moment, the adhesive positioned at the position of the metal hole site 3 plate hole site 3 is in contact connection with the plugging plate positioned at the position of the metal hole site 3 plate hole site 3, when the adhesive is dried and the plugging plate is removed, the adhesive positioned at the position of the metal hole site 3 plate hole site 3 is removed along with the plugging plate, so that the plugging of the hole site 3 of the metal hole site 3 plate is effectively avoided, the bonding strength of the acoustic lining of the metal panel is not affected under the premise of ensuring high through rate of the metal hole site 3 plate, and meanwhile, because the plugging plate is manufactured through rubber hot pressing, the manufacturing process is simple, the rubber cost is low, and the production cost is reduced on the premise of ensuring the quality of parts by adopting the placement.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the equivalent changes belong to the protection scope of the present invention.
Claims (9)
1. The preparation method of the acoustic liner of the metal panel is characterized by comprising the following steps of:
A. preparing a plugging plate:
cutting rubber with the same size as the perforated panel, smearing a release agent on the rubber, drying the rubber to obtain a film brushing rubber (1), smearing the release agent on a non-adhesive surface of the metal perforated panel, drying the non-adhesive surface of the metal perforated panel to obtain a film brushing panel (2), sequentially paving the film brushing panel (2) and the film brushing rubber (1) on a flat plate tool (8), vacuumizing the package (4) of the film brushing panel, placing the package into an autoclave for prepressing, and forming a hole blocking plate on the metal perforated panel, wherein the non-adhesive surface of the film brushing panel is contacted with the film brushing rubber (1);
B. preparation of Co-glue Metal perforated plate (6)
Polishing the cementing surface of the metal perforated panel on the plugging plate in the step A, polishing to obtain a polished surface, cleaning and drying the polished surface, coating an adhesive on the polished surface, standing in a constant temperature environment to enable the adhesive to be dried to form an adhesive surface (7), removing the plugging plate, and taking out the adhesive at the metal perforation holes (3) to obtain a co-adhesive metal perforated plate (6) with the adhesive surface (7);
C. and (3) glue joint forming:
placing the honeycomb core (5) glued with the back plate on a flat plate tool (8), placing the co-glued metal perforated plate (6) in the step B on the honeycomb core (5), and performing vacuum packaging (4) hot press molding on the honeycomb core to obtain a metal panel acoustic liner; the adhesive surface (7) is positioned between the co-adhesive metal perforated plate (6) and the contact surface of the honeycomb core (5).
2. The method for producing a metal panel acoustic liner according to claim 1, wherein in step a, the rubber is a multilayer silicone rubber having a thickness of 2 to 4mm.
3. The method for producing acoustic liners for metal panels according to claim 1, characterized in that the autoclave is hot pressed for at least 60min at a hot pressing temperature of 140-190 ℃ and a pressure of 0.27 mpa-0.65 mpa.
4. The method for producing acoustic liners for metal panels according to claim 1, characterized in that in step B, the metal perforated panel is polished by a pneumatic polisher for at least 150 mesh until the polished surface is uniform.
5. The method for producing a metal panel acoustic liner according to claim 1, wherein in step B, the metal panel acoustic liner is allowed to stand in a constant temperature environment at 18 to 26 ℃ for 30 to 35 minutes.
6. The method for producing a metal panel acoustic liner according to claim 1, wherein in step B, the adhesive is a liquid adhesive.
7. The method for producing acoustic liners for metal panels according to claim 6, characterized in that in step B, the plugging plate is removed by one-step tearing along one direction, first by lifting upwards and then by pulling at a constant speed along the length or width direction of the metal plate.
8. The method for producing acoustic liners for metal panels according to claim 1, characterized in that in the step C, the hot pressing condition is that the curing temperature is 82-93 ℃, the heat preservation time is 120-130min, and the pressure is applied at 0.5-0.1 mpa.
9. The method of claim 1, wherein in step a, the mold release agent is applied in at least 5 layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311074125.4A CN117301597A (en) | 2023-08-24 | 2023-08-24 | Preparation method of metal panel acoustic liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311074125.4A CN117301597A (en) | 2023-08-24 | 2023-08-24 | Preparation method of metal panel acoustic liner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117301597A true CN117301597A (en) | 2023-12-29 |
Family
ID=89272719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311074125.4A Pending CN117301597A (en) | 2023-08-24 | 2023-08-24 | Preparation method of metal panel acoustic liner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117301597A (en) |
-
2023
- 2023-08-24 CN CN202311074125.4A patent/CN117301597A/en active Pending
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