CN115157723A - Metal-wrapped composite material forming process based on reconfigurable flexible die - Google Patents
Metal-wrapped composite material forming process based on reconfigurable flexible die Download PDFInfo
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- CN115157723A CN115157723A CN202210741379.6A CN202210741379A CN115157723A CN 115157723 A CN115157723 A CN 115157723A CN 202210741379 A CN202210741379 A CN 202210741379A CN 115157723 A CN115157723 A CN 115157723A
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- metal
- composite material
- metal sheet
- reconfigurable flexible
- process based
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- 239000002131 composite material Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 69
- 239000002184 metal Substances 0.000 claims abstract description 69
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000005202 decontamination Methods 0.000 claims abstract description 5
- 230000003588 decontaminative effect Effects 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 3
- 239000011159 matrix material Substances 0.000 claims description 15
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/78—Moulding material on one side only of the preformed part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
- B29C70/683—Pretreatment of the preformed part, e.g. insert
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of composite material forming, in particular to a metal-wrapped composite material forming process based on a reconfigurable flexible die, which specifically comprises the steps of cutting a metal sheet and performing surface decontamination treatment; placing a metal sheet on the lower profile of the reconfigurable flexible die, and sequentially paving a resin base, a composite material and a resin base on the metal sheet; covering another metal sheet on the metal sheet; setting the height of each loading unit in the reconfigurable flexible die according to the shape of the workpiece, and extruding and molding the workpiece; and heating the workpiece to solidify the resin base, cooling, and demolding. According to the invention, the metal sheet and the surface of the composite material are cured into a whole, the rapid molding of the metal-wrapped composite material is realized through the reconfigurable flexible mold, the molding requirements of different shapes and sizes of workpieces are met, the problems of corrosion, frictional wear, aging and the like of the surface of the composite material are avoided, the processing cost is reduced, and the molding efficiency and accuracy are improved.
Description
[ technical field ] A
The invention relates to the technical field of composite material forming, in particular to a metal-wrapped composite material forming process based on a reconfigurable flexible die.
[ background ] A method for producing a semiconductor device
The composite material metal sheet is generally a laminated plate compounded by metal, a reinforcing material and a resin composite material, has the advantages of excellent toughness of the metal and high strength of the composite material, and is widely applied in the industries of aerospace, ships, transportation, military industry and the like at present. In the prior art, corresponding molds are required to be used for shaping in the molding process of the composite material, but the molds are long in design and manufacturing period and lack of flexibility, and the molds need to be replaced again when the products are changed, so that the development period of new products is prolonged, and the material processing cost is increased. Even if a common flexible mold is used, the mold surface needs to be replaced for each new workpiece, resulting in waste of resources. Therefore, the key to rapidly and high-quality processing of the composite material is to provide a composite material forming process without replacing a mold.
On the other hand, the composite metal sheets are mostly in the form of prepregs, which results in severe delamination between adjacent prepregs and between metal and composite during preparation and application. In addition, the metal sheets are located between the composite interlayers, and the surface of the composite material is easily corroded, abraded, aged and the like.
[ summary of the invention ]
The invention aims to provide a metal-wrapped composite material forming process based on a reconfigurable flexible die. The process method realizes the die-free molding of the composite material, reduces the processing cost and the resource waste of the composite material, and improves the molding efficiency of the composite material; meanwhile, the corrosion resistance, abrasion resistance, ageing resistance and the like of the surface of the composite material are improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a metal-wrapped composite material forming process based on a reconfigurable flexible die is characterized in that: the method specifically comprises the following steps of,
step 1: cutting the metal sheet according to the size of the workpiece 6, and performing decontamination treatment on the surface of the metal sheet to ensure that the surface of the metal sheet has no dust particles and oil stains;
step 2: placing a second metal sheet 4 on the lower profile of a reconfigurable flexible die 5, and uniformly paving a resin matrix 2, a composite material 3 and the resin matrix 2 on the upper surface of the second metal sheet 4 in sequence;
and step 3: covering the first metal thin plate 1 on the second metal thin plate 4, so that the first metal thin plate 1 and the second metal thin plate 4 wrap the composite material 3;
and 4, step 4: setting the height of each loading unit 7 in the reconfigurable flexible die 5 according to the shape of the workpiece 6, and extruding and forming the metal sheet and the composite material 3 in the interlayer of the metal sheet;
and 5: the workpiece 6 is heated to solidify the resin matrix 2, and after cooling, the workpiece 6 is taken out of the mold.
As a further improvement of the invention, the metal sheet is of a thin-wall structure, and the metal material has plasticity.
As a further improvement of the present invention, the decontamination treatment in step 1 includes cleaning the surface of the sheet metal with a solvent to remove oil and dust particles from the surface.
As a further improvement of the present invention, in the step 2, a demolding layer is arranged on the upper part of the lower profile surface of the reconfigurable flexible mold 5.
As a further improvement of the invention, the spreading mode in the step 2 comprises any one of manual spreading and spray gun spraying.
As a further improvement of the present invention, the resin base 2 is an epoxy resin.
As a further improvement of the invention, the heating curing temperature in the step 5 is 110-130 ℃.
As a further improvement of the invention, the curing time in the step 5 is 80 to 100 minutes.
Compared with the prior art, the invention has the beneficial effects that:
1. the process method solidifies the metal sheet and the surface of the composite material into a whole, realizes the rapid and accurate forming of the workpiece by extrusion forming of the reconfigurable flexible die, can meet the forming requirements of different shapes and sizes of the workpiece, reduces the processing cost and resource waste of the composite material, and improves the forming efficiency of the composite material.
2. By means of paving the resin base layer between the metal sheet and the composite material, the metal sheet and the composite material can be fixedly connected, and the problems of corrosion, friction, abrasion, aging and the like of the surface of the composite material are solved.
3. Due to the use of the reconfigurable flexible die in the forming process, the forming accuracy is improved, the production efficiency is improved, and the labor intensity is reduced.
[ description of the drawings ]
FIG. 1 is a flow chart of the metal-clad composite forming process based on a reconfigurable flexible mold of the present invention.
Fig. 2 is a schematic structural view of the metal-clad composite material of the present invention.
FIG. 3 is a schematic diagram of a process for forming a metal-clad composite of the present invention in a reconfigurable flexible mold.
In FIGS. 1-3: 1-a first metal sheet, 2-a resin matrix, 3-a composite material, 4-a second metal sheet, 5-a reconfigurable flexible die, 6-a workpiece, 7-a loading unit.
[ detailed description ] embodiments
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
Example 1
As shown in fig. 1 to 3, a metal-wrapped composite material molding process based on a reconfigurable flexible mold specifically includes the following steps:
step 1: a 6061 aluminum plate is selected as a metal sheet with the thickness of 0.2mm, and the metal sheet is pre-cut according to the size of the workpiece 6. The surface of the metal sheet is wiped by using dust-free cloth to remove dust particles, and the surface of the metal sheet is cleaned by using alcohol or acetone to remove oil stains.
Step 2: and (3) paving demoulding cloth on the upper part of the lower profile of the reconfigurable flexible die 3 to ensure that the workpiece is easy to demould finally, and placing the second metal sheet 4 on the demoulding cloth. And uniformly spreading a resin matrix 2 on the upper surface of the second metal sheet 4 in a spray gun spraying mode, wherein the resin matrix 2 is epoxy resin. And (3) paving the composite material 3 on the epoxy resin layer according to angles of 0 degree, 45 degrees and 90 degrees in sequence, and enabling each layer to be smoothly jointed. The composite material 3 is a T800 unidirectional carbon fiber prepreg, 3 layers of T800 unidirectional carbon fiber prepregs are cut according to the size of the workpiece 6, the single-layer thickness of the prepreg is 0.2mm, and epoxy resin is laid between two adjacent layers of T800 unidirectional carbon fiber prepregs.
And step 3: the first metal thin plate 1 is covered on the uppermost epoxy resin of the second metal thin plate 4, and air in the internal space is discharged, so that the first metal thin plate 1 and the uppermost epoxy resin are completely bonded. At this time, the first metal thin plate 1 and the second metal thin plate 4 form an upper and lower package of the T800 unidirectional carbon fiber prepreg. A layer of release cloth is laid over the first metal sheet 1.
And 4, step 4: the height of each loading unit 7 in the reconfigurable flexible die 5 is set according to the requirements of the width, thickness and curved surface shape of the workpiece 6, so that the metal sheet and the composite material 3 in the interlayer thereof are extruded and molded.
And 5: and heating the workpiece 6 to 120 ℃ to solidify the resin matrix 2, preserving the heat for 90 minutes, and naturally cooling. After cooling to room temperature, the work piece 6 is removed from the mould until the resin matrix 2 is fully cured.
Example 2
A metal-wrapped composite material forming process based on a reconfigurable flexible mold specifically comprises the following steps:
step 1: the aluminum plate is selected to be a metal thin plate with the thickness of 0.2mm, and the metal thin plate is pre-cut according to the size of the workpiece 6. The surface of the metal sheet is wiped by using dust-free cloth to remove dust particles, and the surface of the metal sheet is cleaned by using alcohol or acetone to remove oil stains.
Step 2: a release agent is applied to the upper part of the lower mould surface and the lower part of the upper mould surface of the reconfigurable flexible mould 3 respectively to make the work piece finally easy to release, and the second metal sheet 4 is placed on the release cloth. And uniformly spreading a resin matrix 2 on the upper surface of the second metal sheet 4 in a manual coating mode, wherein the resin matrix 2 is epoxy resin. And (3) sequentially paving the composite material 3 on the epoxy resin layer according to angles of 0 degree, +/-45 degrees and 90 degrees, and enabling each layer to be smoothly jointed. The composite material 3 is carbon cloth, 3 layers of carbon cloth are cut according to the size of the workpiece 6, the thickness of a single layer of the carbon cloth is 0.2mm, and epoxy resin is laid between every two adjacent layers of the carbon cloth.
And step 3: the first metal thin plate 1 is covered on the uppermost epoxy resin of the second metal thin plate 4, and air in the internal space is discharged, so that the first metal thin plate 1 and the uppermost epoxy resin are completely bonded. At this time, the first metal thin plate 1 and the second metal thin plate 4 form an upper and lower wrap to the carbon cloth.
And 4, step 4: the height of each loading unit 7 in the reconfigurable flexible die 5 is set according to the requirements of the width, thickness and curved surface shape of the workpiece 6, so that the metal sheet and the composite material 3 in the interlayer thereof are extruded and molded.
And 5: and heating the workpiece 6 to 130 ℃ to solidify the resin matrix 2, preserving the heat for 80 minutes, and naturally cooling. After cooling to room temperature, the work piece 6 is removed from the mould until the resin matrix 2 is fully cured.
The process method is suitable for flexible molding of workpieces with different shapes and sizes by the metal-coated composite material, saves the manufacturing and design cost caused by mold replacement, and has the advantages of quick and accurate molding process.
Claims (8)
1. A metal-wrapped composite material forming process based on a reconfigurable flexible die is characterized in that: the method specifically comprises the following steps of,
step 1: cutting the metal sheet according to the size of the workpiece (6), and performing decontamination treatment on the surface of the metal sheet to ensure that the surface of the metal sheet is free of dust particles and oil stains;
and 2, step: placing a second metal sheet (4) on the lower profile of a reconfigurable flexible die (5), and uniformly paving a resin matrix (2), a composite material (3) and the resin matrix (2) on the upper surface of the second metal sheet (4) in sequence;
and step 3: covering the first metal thin plate (1) on the second metal thin plate (4) so that the composite material (3) is wrapped by the first metal thin plate (1) and the second metal thin plate (4);
and 4, step 4: setting the height of each loading unit (7) in the reconfigurable flexible die (5) according to the shape of the workpiece (6), and extruding and molding the metal sheet and the composite material (3) in the interlayer of the metal sheet;
and 5: the workpiece (6) is heated to solidify the resin matrix (2), and after cooling, the workpiece (6) is removed from the mold.
2. The metal-clad composite material forming process based on the reconfigurable flexible mold according to claim 1, wherein: the metal sheet is of a thin-wall structure, and the metal material has plasticity.
3. The metal-clad composite material forming process based on the reconfigurable flexible mold according to claim 1, wherein: the decontamination treatment in step 1 includes cleaning the surface of the metal sheet by a solvent, and removing oil stains and dust particles on the surface.
4. The metal-wrapped composite molding process based on the reconfigurable flexible mold according to claim 1, characterized in that: and in the step 2, a demolding layer is arranged on the upper part of the lower profile surface of the reconfigurable flexible mold (5).
5. The metal-wrapped composite molding process based on the reconfigurable flexible mold according to claim 1, characterized in that: the paving mode in the step 2 comprises any one of manual coating and spray by a spray gun.
6. The metal-clad composite material forming process based on the reconfigurable flexible mold according to claim 1, wherein: the resin base (2) is epoxy resin.
7. The metal-wrapped composite molding process based on the reconfigurable flexible mold according to claim 1, characterized in that: the heating curing temperature in the step 5 is 110-130 ℃.
8. The metal-wrapped composite molding process based on the reconfigurable flexible mold according to claim 1, characterized in that: the curing time in the step 5 is 80 to 100 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210741379.6A CN115157723A (en) | 2022-06-28 | 2022-06-28 | Metal-wrapped composite material forming process based on reconfigurable flexible die |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210741379.6A CN115157723A (en) | 2022-06-28 | 2022-06-28 | Metal-wrapped composite material forming process based on reconfigurable flexible die |
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| CN115157723A true CN115157723A (en) | 2022-10-11 |
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| CN202210741379.6A Pending CN115157723A (en) | 2022-06-28 | 2022-06-28 | Metal-wrapped composite material forming process based on reconfigurable flexible die |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6298896B1 (en) * | 2000-03-28 | 2001-10-09 | Northrop Grumman Corporation | Apparatus for constructing a composite structure |
| CN101524903A (en) * | 2009-04-09 | 2009-09-09 | 哈尔滨工业大学 | Carbon fiber metal laminate |
| CN104647777A (en) * | 2015-03-09 | 2015-05-27 | 吉林大学 | Composite material curved surface multipoint hot press molding device |
| CN104669594A (en) * | 2015-03-09 | 2015-06-03 | 吉林大学 | Composite curve surface hot-press forming method based on multi-point reconfigurable die |
| US9314975B1 (en) * | 2013-04-25 | 2016-04-19 | The Boeing Company | High rate fabrication of compression molded components |
| CN112157966A (en) * | 2020-09-29 | 2021-01-01 | 首钢集团有限公司 | Fiber reinforced metal material composite board |
-
2022
- 2022-06-28 CN CN202210741379.6A patent/CN115157723A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6298896B1 (en) * | 2000-03-28 | 2001-10-09 | Northrop Grumman Corporation | Apparatus for constructing a composite structure |
| CN101524903A (en) * | 2009-04-09 | 2009-09-09 | 哈尔滨工业大学 | Carbon fiber metal laminate |
| US9314975B1 (en) * | 2013-04-25 | 2016-04-19 | The Boeing Company | High rate fabrication of compression molded components |
| CN104647777A (en) * | 2015-03-09 | 2015-05-27 | 吉林大学 | Composite material curved surface multipoint hot press molding device |
| CN104669594A (en) * | 2015-03-09 | 2015-06-03 | 吉林大学 | Composite curve surface hot-press forming method based on multi-point reconfigurable die |
| CN112157966A (en) * | 2020-09-29 | 2021-01-01 | 首钢集团有限公司 | Fiber reinforced metal material composite board |
Non-Patent Citations (1)
| Title |
|---|
| 马李;赵先锐;: "金属内衬复合结构的固化模拟研究", 台州学院学报, no. 03, 20 June 2012 (2012-06-20), pages 35 - 38 * |
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