CN106891598B - A kind of wavy channel core sandwich and preparation method thereof - Google Patents
A kind of wavy channel core sandwich and preparation method thereof Download PDFInfo
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- CN106891598B CN106891598B CN201710042868.1A CN201710042868A CN106891598B CN 106891598 B CN106891598 B CN 106891598B CN 201710042868 A CN201710042868 A CN 201710042868A CN 106891598 B CN106891598 B CN 106891598B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
Abstract
The invention discloses a kind of wavy channel core sandwiches and preparation method thereof.The wavy channel core sandwich is made of top panel, wavy channel core and lower panel.I core body is replaced using wavy channel core and obtains the two-dimensional lattice core sandwich with multi-functional characteristic, the structure is in specific strength, the aspect of performance such as specific stiffness improve 20% or more compared with I type structure, and make it in 50% or more the channel that transition flow is dominated flowing coefficient of heat conduction enhancing, it makes it have and has both excellent active cooling function similar in honeycomb sandwich construction while mechanical property, structure of the invention has high specific strength, high specific stiffness and excellent thermal conduction characteristic, it can be applied to space flight and aviation, ship, automobile, mechanical and field of civil engineering, especially have broad application prospects in the load-carrying construction that heat management requires.
Description
[technical field]
The invention belongs to sandwich technical fields, and in particular to a kind of wavy channel core sandwich and its system
Preparation Method, especially a kind of two-dimensional lattice core sandwich material with multi-functional characteristic.
[background technique]
Ultra light porous metal material is to go out in recent years with material preparation and the rapid development of mechanical manufacturing technology
Existing a kind of novel multifunction material.Such material has high porosity feature, and micro-structure can be divided into unordered by regular degree
With orderly two major classes, the former includes closed-cell foam material and open-cell foam materials, and the latter includes two-dimensional lattice structure (such as ripple
Structure, honeycomb etc.) and three-dimensional truss structure (such as pyramid structure, X-type structure).
Currently, two-dimensional lattice structure material is since its manufacturing process is simple, the features such as excellent in mechanical performance, navigate in space flight
It is widely used in sky, ship, automobile, machinery and civil engineering.With the development that integration of equipments and multifunction design, tool
There is the material of multi-functional characteristic increasingly by the favor of engineering circles, traditional two-dimensional lattice material mechanical performance is excellent, such as bee
Nest structural core, the mechanical properties such as compression, bending are prominent, but since the core is made of cross one another web, in core
Portion's fluids free flow is dynamic to be hindered, and can not achieve active heat removal function.In addition for big specification honeycomb sandwich construction according to
Laser welding will form intersection welding bead on panel, reduce the mechanical property of panel.Though traditional I core body has aperture
Channel, but its core is prone to buckling failure, therefore its structure is to be improved.
[summary of the invention]
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing one kind takes into account mechanics
The multi-functional sandwich of performance and active cooling function is had and with wavy channel core substitution I core body
There is the wavy channel core sandwich of more excellent mechanics, comprehensive performance of conducting heat.
The invention adopts the following technical scheme:
A kind of preparation method of wavy channel core sandwich, comprising the following steps:
S1, smooth plate is made by corrugated plating using punching press or rolling techniques；
S2, the corrugated plating is cut into ripple lath；
S3, by the plate cutting of smooth mistake at top panel and lower panel；
After the greasy dirt and rusty stain of top panel, lower panel and ripple lath described in S4, removal step S2 and S3, it is put into dryer
Inside it is dried for standby；
S5, the ripple lath, which is parallel to each other, is assembled into wavy channel core, and fixation is spare；
S6, wavy channel core described in step S5 is connected with top panel described in step S4, lower panel wavy channel is made
Core sandwich plate.
Further, in step S5, the phase difference of the ripple lathIt is 0 °~180 °.
Further, in step S5, the equivalent neutral interplanar distance of the ripple lath is thick 10~100 times of ripple lath
Degree.
Further, in step S5, the equivalent neutral surface of the adjacent ripple lath is arranged in parallel.
Further, it in the step S6, is attached using soldering, Laser Welding or epoxy glue and the channel core is made
Sandwich plate.
Further, the soldering keeps vacuum degree 10-2~10-3Pa, 550 are risen to from room temperature with 1 DEG C/min speed~
1200 DEG C, keep the temperature 10min~60min, slow cooling to room temperature.
A kind of wavy channel core sandwich of wavy channel core sandwich preparation method preparation, including top panel
And lower panel, wavy channel core is provided between the top panel and lower panel, the wavy channel core is by ripple lath
Be parallel to each other composition.
Further, the corrugated shape of the ripple lath includes sine bellows, circular arc ripple, triangle ripple, trapezoidal wave
Line and rectangle ripple.
Further, the top panel, lower panel and wavy channel core by carbon steel, stainless steel, fine aluminium, aluminium alloy,
Any one of magnesium alloy, titanium alloy or composite material are prepared.
Further, the top panel is different with the thickness of lower panel.
Compared with prior art, the present invention at least has the advantages that
The present invention provides a kind of wavy channel core sandwich preparation method, using punching press or rolling techniques by smooth mistake
Plate ripple lath, top panel and lower panel is respectively prepared, after drying and processing, ripple lath is arranged in parallel and is assembled into
Wavy channel core sandwich plate is made in wavy channel core and upper and lower panel together, replaces I type by using wavy channel core
Core and obtain the wavy channel core sandwich with multi-functional characteristic, the structure on the basis of I type structure further
The mechanical characteristics such as its specific strength, specific stiffness are improved, and make it in the channel that transition flow is dominated flowing coefficient of heat conduction enhancing
50% or more, it makes it have and has both excellent active cooling function similar in honeycomb sandwich construction while mechanical property.
Further, it can control the flow regime of different fluid by changing ripple lath phase difference, be optimal stream
Dynamic heat transfer coefficient.It can change wavy channel core relative density by adjusting equivalent neutral interplanar distance, improve knot to greatest extent
The specific strength and specific stiffness of structure.
The present invention also provides a kind of wavy channel core sandwiches, and line channel core sandwich is by top panel, ripple
Channel core and lower panel composition, replace I core body with wavy channel core and obtain the two-dimensional lattice with multi-functional characteristic
Core sandwich, which improves 20% or more compared with I type structure in aspect of performance such as specific strength, specific stiffness, and makes it in mistake
It crosses stream and flows 50% or more coefficient of heat conduction enhancing for leading channel, make it have and mechanical property similar in honeycomb sandwich construction
Excellent active cooling function is had both while energy.
Further, according to different application and processing conditions, corrugated shape can choose sine bellows, arc-wave
Line, triangle ripple, trapezoidal ripple or rectangle ripple.
Further, considering certain special occasions, such as shock resistance or antiknock situation, uniform thickness is not designed using upper and lower panel
It can be further improved the mechanical characteristic of wavy channel sandwich structure.
In conclusion sandwich of the present invention has high specific strength, high specific stiffness and excellent thermal conduction characteristic, Ke Yiying
For space flight and aviation, ship, automobile, machinery and field of civil engineering, especially have in the load-carrying construction that heat management requires wide
Wealthy application prospect.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of wavy channel core sandwich of the present invention；
Fig. 2 is the corrugated shape schematic diagram of corrugated plating of the present invention；
Fig. 3 is compression experiment result figure of the present invention；
Fig. 4 is structure of the invention performance comparison figure.
Wherein: 1. top panels；2. ripple lath；3. wavy channel core；4. lower panel；5 equivalent neutral surfaces.
[specific embodiment]
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
It please refers to shown in Fig. 1 and Fig. 2, a kind of wavy channel core sandwich of the present invention, including top panel 1 and lower panel
4, it is provided with wavy channel core 3 between top panel 1 and lower panel 4, wavy channel core 3 is parallel to each other group by ripple lath 2
At.Replace I core body with wavy channel core and obtains the two-dimensional lattice core sandwich with multi-functional characteristic, the structure
20% or more is improved compared with I type structure in aspect of performance such as specific strength, specific stiffness, and flows it in the channel that transition flow is dominated
50% or more coefficient of heat conduction enhancing, makes it have and has both excellent master similar in honeycomb sandwich construction while mechanical property
Dynamic refrigerating function.
Wherein, the corrugated shape of ripple lath 2 includes sine bellows, circular arc ripple, triangle ripple, trapezoidal ripple or rectangle
Ripple.Top panel 1, lower panel 4 and wavy channel core 3 by carbon steel, stainless steel, fine aluminium, aluminium alloy, magnesium alloy, titanium alloy or
Composite material is prepared.
The thickness of top panel 1 and lower panel 4 can be identical, can not also be identical, and preferred thickness is different.
A kind of preparation method of wavy channel core sandwich of the present invention, comprising the following steps:
S1, smooth plate is made by corrugated plating using punching press or rolling techniques；
S2, the corrugated plating is cut into ripple lath；
S3, by the plate cutting of smooth mistake at top panel and lower panel；
After the greasy dirt and rusty stain of top panel, lower panel and ripple lath described in S4, removal step S2 and S3, it is put into dryer
Inside it is dried for standby；
S5, the ripple lath, which is parallel to each other, is assembled into wavy channel core, and fixation is spare；
The phase difference of the ripple lathIt is 0 °~180 °, the equivalent neutral interplanar distance of the ripple lath is corrugated plating
10~100 times of thick degree of item.
S6, wavy channel core described in step S5 is connected with top panel described in step S4, lower panel wavy channel is made
Core sandwich plate.
The equivalent neutral surface of the adjacent ripple lath is parallel to each other, and is attached using soldering, Laser Welding or epoxy glue
The channel core sandwich plate is made, soldering keeps vacuum degree 10-2~10-3Pa, 550 are risen to from room temperature with 1 DEG C/min speed~
1200 DEG C, keep the temperature 10min~60min, slow cooling to room temperature.
Embodiment 1
1) titanium alloy plate of smooth mistake is made to the corrugated plating of sinusoidal waveform of stamping technology first；
2) corrugated plating is then cut into using line cutting technology by ripple lath 2 as required；
3) titanium alloy plate of smooth mistake is cut into the upper surface of equal thickness plate 1 and lower panel 4 using line cutting technology；
4) top panel 1, lower panel 4 and ripple lath 2 are put into supersonic wave cleaning machine and are cleaned, be put into 40~50 DEG C of baking
It is dried for standby in case；
5) ripple lath 2 is assembled formed ripple in parallel to each other by the spacing and 90 ° of phase differences of 10 times of web thickness of rule
Channel core 3, and fixed with tooling spare；
6) commercially available Ti base solder paste will be uniformly smeared at wavy channel core 3 and 4 link position of upper and lower panel, in baking oven
In 80 DEG C drying, be then charged into high temperature brazing furnace and welded, slow cooling comes out of the stove to obtain wavy channel to room temperature after the completion of welding
Core sandwich plate.
The soldering: vacuum degree control is 10-2Pa or more rises to 830-900 DEG C of heat preservation from room temperature with 1 DEG C/min speed
10min, then furnace cooling.
Embodiment 2:
1) 1060 pure aluminum plates of smooth mistake are made to the corrugated plating of triangle of rolling techniques first；
2) corrugated plating is then cut into using line cutting technology by ripple lath 2 as required；
3) 1060 pure aluminum plates of smooth mistake are cut into the upper surface of equal thickness plate 1 and lower panel 4 using line cutting technology；
4) top panel 1, lower panel 4 and ripple lath 2 are degreased and rusty stain using metal cleaner cleaning, is put into 40
~50 DEG C of drying in oven is spare；
5) ripple lath 2 is assembled formed ripple in parallel to each other by the spacing and 180 ° of phase differences of 20 times of web thickness of rule
Channel core 3, and fixed with tooling spare；
6) commercially available aluminium soldering cream will be uniformly coated at wavy channel core 3 and 4 link position of upper and lower panel, in an oven
40~50 DEG C of drying, are then charged into high temperature brazing furnace and are welded, and it is logical to come out of the stove to obtain ripple for slow cooling to room temperature after the completion of welding
Road core sandwich plate.
The soldering: vacuum degree control is 10-3Pa rises to 550~620 DEG C of heat preservation 10min from room temperature with 1 DEG C/min speed
~1h, then furnace cooling.
Embodiment 3:
1) trapezoidal corrugated plating is made using stamping technology in the stainless steel plate of smooth mistake first；
2) corrugated plating is then cut into using line cutting technology by ripple lath 2 as required；
3) stainless steel plate of smooth mistake is cut into the upper surface of equal thickness plate 1 and lower panel 4 using line cutting technology；
4) top panel 1, lower panel 4 and ripple lath 2 are degreased and rusty stain using metal cleaner cleaning, is put into 40
~50 DEG C of drying in oven is spare；
5) ripple lath 2 is assembled in parallel to each other by the spacing and 0 ° of phase difference of 50 times of web thickness of rule and forms ripple and leads to
Road core 3, and fixed with tooling spare；
6) it the upper surface of will handle plate 1 well to cover above wavy channel core 3, after adjusting position, laser is determined by test weld
Device position and height, according to corrugated shape work out laser walk program, according to panel and core thickness determine laser power and
Speed of welding.The sequence that core plate is welded in welding process is alternately to be welded from centre to both sides.
After the completion of whole face welding, panel is spun upside down after fixing, lower panel 4 is covered in core plate, repeats the above behaviour
Make, completes the welding of lower panel 4 and core, finally obtain wavy channel core sandwich plate.
Embodiment 4:
1) trapezoidal corrugated plating is made using stamping technology in the stainless steel plate of smooth mistake first；
2) corrugated plating is then cut into using line cutting technology by ripple lath 2 as required；
3) stainless steel plate of smooth mistake is cut into the upper surface of equal thickness plate 1 and lower panel 4 using line cutting technology；
4) top panel 1, lower panel 4 and ripple lath 2 are degreased and rusty stain using metal cleaner cleaning, is put into 40
~50 DEG C of drying in oven is spare；
5) ripple lath 2 is assembled formed ripple in parallel to each other by the spacing and 0 ° of phase difference of 100 times of web thickness of rule
Channel core 3, and fixed with tooling spare；
6) it the upper surface of will handle plate 1 well to cover above wavy channel core 3, after adjusting position, laser is determined by test weld
Device position and height, according to corrugated shape work out laser walk program, according to panel and core thickness determine laser power and
Speed of welding, the sequence that core plate is welded in welding process are alternately to be welded from centre to both sides.
After the completion of whole face welding, panel is spun upside down after fixing, lower panel 4 is covered in core plate, repeats the above behaviour
Make, completes the welding of lower panel 4 and core, finally obtain wavy channel core sandwich plate.
It please refers to shown in Fig. 3, face external compression performance and the existing lattice core structure of wavy channel core sandwich
Compression performance is similar.Entire compression process is divided into 3 stages, and 1) linear elasticity compression process, with the increase of compressive strain, compression
Linear increase；2) nonlinear elasticity sexual stage, the stage since 2 points of diagram, terminate, compression is with compressive strain to No. 3 points
Increase and non-linear growth；3) softening stress-displacement stage, after peak point 3, compression increases with compressive strain and is reduced.This experiment
The structure exemplar for choosing different relative densities in 4, it can be seen that compression peak value and equivalent elastic modulus are with relative density
Increase and increase.
It please refers to shown in Fig. 4, draws out the relationship of compression performance and relative density outside different type core, horizontal seat
Mark is expressed as the relative density of structural core, and ordinate is expressed as the dimensionless intensity value of structural strength, it can be determined that: opposite
The identical situation of density, the face external compression performance of wavy channel core sandwich is considerably beyond traditional ripple struction.
Outside compression performance in Fig. 4 indicates that the parameter shows structural matrix closer to 1 with nondimensional compressive strength
The utilization rate of material is higher, and material efficiency is higher.As can be seen from the figure honeycomb core relative density be located at 0.03~
There is very high stock utilization in 0.1 this interval range.In the case that relative density is less than 0.03, wavy channel core
Dimensionless maximum intensity, stock utilization is maximum.In addition it can be seen from the figure that the outside compression performance of wavy channel core
It is far longer than traditional ripple core.Therefore, in low density area, structure of the invention has excellent specific strength.The above content
It is merely illustrative of the invention's technical idea, this does not limit the scope of protection of the present invention, all according to skill proposed by the present invention
Art thought, any changes made on the basis of the technical scheme are each fallen within the protection scope of claims of the present invention.
Claims (7)
1. a kind of preparation method of wavy channel core sandwich, it is characterised in that: the following steps are included:
S1, smooth plate is made by corrugated plating using punching press or rolling techniques；
S2, the corrugated plating is cut into ripple lath；
S3, by the plate cutting of smooth mistake at top panel and lower panel；
After the greasy dirt and rusty stain of top panel, lower panel and ripple lath described in S4, removal step S2 and S3, it is put into dryer and dries
It does spare；
S5, the ripple lath, which is parallel to each other, is assembled into wavy channel core, fixed spare, the phase difference of the ripple lathIt is 0 °~180 °, the equivalent neutral interplanar distance of the ripple lath is 10~100 times of thick degree of ripple lath, the adjacent wave
The equivalent neutral surface of card item is arranged in parallel；
S6, wavy channel core described in step S5 is connected with top panel described in step S4, lower panel wavy channel core is made
Sandwich plate.
2. a kind of preparation method of wavy channel core sandwich according to claim 1, it is characterised in that: the step
In rapid S6, it is attached using soldering, Laser Welding or epoxy glue and the channel core sandwich plate is made.
3. a kind of preparation method of wavy channel core sandwich according to claim 2, it is characterised in that: the pricker
Weldering keeps vacuum degree 10-2~10-3Pa rises to 550~1200 DEG C from room temperature with 1 DEG C/min speed, keeps the temperature 10min~60min,
Slow cooling is to room temperature.
4. a kind of wavy channel core using the wavy channel core sandwich preparation method preparation of claims 1 or 22 or 3
Interlayer body structure, which is characterized in that including top panel (1) and lower panel (4), set between the top panel (1) and lower panel (4)
It is equipped with wavy channel core (3), the wavy channel core (3) is parallel to each other by ripple lath (2) to be formed.
5. a kind of wavy channel core sandwich according to claim 4, it is characterised in that: the ripple lath (2)
Corrugated shape include sine bellows, circular arc ripple, triangle ripple, trapezoidal ripple and rectangle ripple.
6. a kind of wavy channel core sandwich according to claim 4, it is characterised in that: the top panel (1), under
Panel (4) and wavy channel core (3) are by any one of carbon steel, stainless steel, fine aluminium, aluminium alloy, magnesium alloy or titanium alloy
It is prepared.
7. a kind of wavy channel core sandwich according to claim 4, it is characterised in that: the top panel (1) and
The thickness of lower panel (4) is different.
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| CN107471756B (en) * | 2017-08-16 | 2019-12-10 | 北京航空航天大学 | Be applied to hyperbolic ripple sandwich protective structure that aircraft pavement was blocked |
| CN110560875A (en) * | 2019-09-23 | 2019-12-13 | 南昌航空大学 | double-layer plate with channel structure and vacuum electron beam processing method thereof |
| CN112160503A (en) * | 2020-09-18 | 2021-01-01 | 北京工业大学 | Steel pipe-shaped steel special-shaped column that anti side twin columns of dual ripple board bore |
| CN113370614A (en) * | 2021-06-20 | 2021-09-10 | 西北工业大学 | Bearing and heat dissipation integrated X-core corrugated wall square-hole honeycomb and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5670238A (en) * | 1995-04-13 | 1997-09-23 | Anderson & Middleton Company | Laminate sheet material |
| CN102390066A (en) * | 2011-10-25 | 2012-03-28 | 唐忠荣 | Manufacturing method of waveform bamboo hollow core plate |
| CN203331483U (en) * | 2013-06-20 | 2013-12-11 | 郑州精益达汽车零部件有限公司 | Sandwich board |
-
2017
- 2017-01-20 CN CN201710042868.1A patent/CN106891598B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5670238A (en) * | 1995-04-13 | 1997-09-23 | Anderson & Middleton Company | Laminate sheet material |
| CN102390066A (en) * | 2011-10-25 | 2012-03-28 | 唐忠荣 | Manufacturing method of waveform bamboo hollow core plate |
| CN203331483U (en) * | 2013-06-20 | 2013-12-11 | 郑州精益达汽车零部件有限公司 | Sandwich board |
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