CN106827713B - A kind of ripple square tube core sandwich and preparation method thereof - Google Patents
A kind of ripple square tube core sandwich and preparation method thereof Download PDFInfo
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- CN106827713B CN106827713B CN201710042624.3A CN201710042624A CN106827713B CN 106827713 B CN106827713 B CN 106827713B CN 201710042624 A CN201710042624 A CN 201710042624A CN 106827713 B CN106827713 B CN 106827713B
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- square tube
- ripple
- tube core
- ripple square
- lower panel
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
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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
- 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
- B32B3/10—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 discontinuous layer, i.e. formed of separate pieces of material
- B32B3/18—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 discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
- B32B3/20—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 discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side of hollow pieces, e.g. tubes; of pieces with channels or cavities
Abstract
The invention discloses a kind of ripple square tube core sandwiches and preparation method thereof.The present invention relates to sandwich technical fields.The ripple square tube core sandwich is made of top panel, ripple square tube core and lower panel.The present invention replaces straight square tube core with ripple square tube core, the structure is to further increase the mechanical characteristics such as its specific strength, specific stiffness on the basis of straight tube core, and make it in 50% or more the channel that transition flow is dominated flowing coefficient of heat conduction enhancing, simultaneously because the contact area of square tube type core and upper and lower panel can need to be designed according to cutting performance, it does not need to process special welding platform on core, to simplify processing technology.Structure of the invention has high specific strength, high specific stiffness and excellent thermal conduction characteristic, has wide application prospect in space flight and aviation, ship, automobile, machinery and field of civil engineering, especially has a extensive future in the load-carrying construction required with heat transfer.
Description
[technical field]
The invention belongs to technical field of composite materials, and in particular to a kind of ripple square tube core sandwich and its preparation side
Method, especially a kind of composite 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
The existing novel and multifunctional material of one kind.This kind of material has high porosity, and corresponding 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 material (such as ripple
Structure, honeycomb etc.) and three-dimensional truss structure (such as pyramid structure, X-type structure).
In recent years, the light dot matrix structure with multi-functional characteristic is applied to engineering design increasingly by engineering circles
Favor, such as heat-conductive characteristic, shock resistance, detonation can.For in the research of the lattice structure capability of antidetonance, Fu Jini
Sub- university Wadley professor team proposes a kind of to be horizontally staggered the straight square tube of arrangement as the sandwich of core, structure tool
Have the characteristics that preparation process is simple, but since rhs-structure tube wall is easy to happen Euler's buckling, leads to its load-carrying properties and energy-absorbing
Efficiency is lower.Based on the above reasons, on the basis of straight square tube structure, the present invention replaces straight square tube using ripple square tube, both may be used
It inherits straight tube structure and prepares simple feature, and its load-carrying properties and energy absorbing efficiency can be improved, while can further strengthen the knot
The heat transfer property of structure.
[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 has both mechanics
The multifunctional composite of load-carrying properties (specific strength, specific stiffness, than energy-absorbing) and heat management function.By being replaced with ripple square tube
Straight square tube and obtain the ripple square tube core sandwich with multi-functional characteristic.
The invention adopts the following technical scheme:
A kind of ripple square tube core sandwich, including top panel and lower panel, set between the top panel and lower panel
It is equipped with ripple square tube core, the wavy channel core is arranged parallel to each other by multiple hollow ripple square tubes and is formed.
Further, the corrugated shape of the ripple square tube is sine bellows.
Further, the top panel is different with the thickness of lower panel.
Further, the top panel, lower panel and ripple square tube are by stainless steel, aluminium alloy or titanium alloy material
It is any to be made.
A kind of preparation method of ripple square tube core sandwich, comprising the following steps:
S1, ripple square tube is made in straight square tube bending by sine bellows；
S2, by the plate cutting of smooth mistake at top panel and lower panel；
S3, the cleaning top panel, lower panel and ripple square tube, are put into dryer and are dried for standby；
S4, multiple ripple square tubes, which are parallel to each other, assembles corrugated square tube core, and fixation is spare；
S5, ripple square tube core described in step S4 is connect with top panel described in step S3, lower panel ripple square tube is made
Core sandwich.
Further, in step S1, the ripple Box Section is square section or rectangular cross-sectional.
Further, in step S4, the ripple square tube is ripple square tube core by 1~2 times of tube wall spacing assembled parallel.
Further, in step S4, phase difference is 0 °~180 ° between the adjacent ripple square tube.
Further, in the step S5, vacuum degree 10-2~10-3Pa is kept, is risen to 1 DEG C/min speed from room temperature
550~1200 DEG C, the top panel, ripple square tube core and lower panel are made by the ripple square tube core using high temperature brazing
Sandwich keeps the temperature 10min~60min, slow cooling to room temperature.
Compared with prior art, the present invention at least has the advantages that
The present invention provides a kind of ripple square tube core sandwich, is made of top panel, ripple square tube core and lower panel,
Straight square tube is replaced by using ripple square tube and obtains the ripple square tube core sandwich with multi-functional characteristic, makes it in mistake
It crosses stream and flows 50% or more coefficient of heat conduction enhancing for leading channel, which further mentions on the basis of straight square tube structure
High specific strength, specific stiffness and compare energy absorption characteristics.
Further, sine bellows square tube can improve while improving the flowing heat transfer characteristic of ripple square tube core
The resistance to compression stability of sandwich.
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 ripple square tube core sandwich.
The present invention also provides a kind of ripple square tube core sandwich preparation method, by sine bellows by straight square tube bending system
Corrugated square tube, by the upper surface of cutting plate, lower panel and ripple square tube after drying and processing, according to a fixed spacing and phase difference
Sandwich is made in connection, replaces straight square tube by using ripple square tube and obtains the ripple square tube core with multi-functional characteristic
Sandwich is not needed since the contact area of square tube type core and upper and lower panel can need to be designed according to cutting performance
Special welding platform is processed on core, to simplify processing technology, the structure is further on the basis of straight square tube structure
It improves specific strength, specific stiffness and compares energy absorption characteristics.
Further, it can control the flow regime of different fluid by changing ripple lath phase difference, be optimal stream
Dynamic heat transfer coefficient, can change wavy channel core relative density by adjusting ripple square tube spacing, improves structure to greatest extent
Mechanical property.
Further, the present invention carries out the welding of upper and lower panel and core, this method operation letter using Vacuum Soldering Technology
Just, technology maturation, panel and core bonding strength are high.
In conclusion structure of the invention has high specific strength, high specific stiffness and excellent thermal conduction characteristic, navigate in space flight
Sky, ship, automobile, machinery and field of civil engineering have wide application prospect, especially in the load knot required with heat transfer
It has a extensive future in structure.
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 ripple square tube core sandwich of the present invention；
Fig. 2 is ripple rhs-structure schematic diagram of the present invention.
Wherein: 1. top panels；2. ripple square tube；3. ripple square tube core；4. lower panel.
[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, the invention discloses a kind of ripple square tube core sandwiches, including 1 He of top panel
Lower panel 4 is provided with ripple square tube core 3 between the top panel 1 and lower panel 4, the wavy channel core 3 is by multiple waves
Line square tube 2 is parallel to each other composition.
Wherein, the corrugated shape of the ripple square tube is sine bellows, and the thickness of top panel 1 and lower panel 4 can be identical,
Can not also be identical, preferred thickness is different.Top panel 1, lower panel 4 and ripple square tube 2 are by stainless steel, aluminium alloy or titanium alloy material
Material is made.
Invention additionally discloses a kind of ripple square tube core sandwich preparation methods, comprising the following steps:
S1, ripple square tube is made in straight square tube bending by sine bellows；
The ripple Box Section is square section or rectangular cross-sectional；
S2, by the plate cutting of smooth mistake at top panel and lower panel；
S3, the cleaning top panel, lower panel and ripple square tube, are put into dryer and are dried for standby；
S4, multiple ripple square tubes, which are parallel to each other, assembles corrugated square tube core, and fixation is spare；
The ripple square tube is ripple square tube core by 1~2 times of tube wall spacing assembled parallel；Between the adjacent ripple square tube
Phase difference is 0 °~180 °；
S5, ripple square tube core described in step S4 is connect with top panel described in step S3, lower panel ripple square tube is made
Core sandwich.
Keep vacuum degree 10-2~10-3Pa rises to 550~1200 DEG C from room temperature with 1 DEG C/min speed, using high temperature brazing
The top panel, ripple square tube core and lower panel are made the ripple square tube core sandwich, heat preservation 10min~
60min, slow cooling to room temperature.
Embodiment one:
1) sine bellows square tube is made by prescribed requirement in 1060 aluminium alloy straight square tubes using bending machine first；
2) 1060 aluminum alloy plate materials of smooth mistake are cut into top panel and lower panel using line cutting technology；
3) it will degrease and rusty stain after the cleaning of top panel, lower panel and ripple square tube, and be put into dryer and be dried for standby；
4) ripple square tube is assembled in parallel to each other by 1 times of tube wall spacing and 90 ° of phase differences and forms ripple square tube core, and
It is fixed with tooling spare；
5) by uniform commercially available aluminium soldering cream at ripple square tube core and upper and lower panel binding site, in an oven 40~50
DEG C drying, be then charged into high temperature brazing furnace and welded, slow cooling to room temperature comes out of the stove to obtain ripple square tube core after the completion of welding
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.
Embodiment two:
1) semicircle ripple square tube is made by prescribed requirement in TC4 titanium alloy straight square tube using bending machine first；
2) the TC4 titanium alloy plate of smooth mistake is cut into top panel and lower panel using line cutting technology；
3) it will degrease and rusty stain after the cleaning of top panel, lower panel and ripple square tube, and be put into dryer and be dried for standby；
4) ripple square tube is assembled in parallel to each other by 2 times of tube wall spacing and 180 ° of phase differences and forms ripple square tube core,
And it is fixed with tooling spare；
5) Ag base solder paste is uniformly smeared into the ripple square tube core face parallel with top panel and lower panel, in an oven
80 DEG C of drying, are then charged into high temperature brazing furnace and are welded, slow cooling to room temperature comes out of the stove to obtain ripple square tube core after the completion of welding
Interlayer body 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 three:
1) semicircle ripple square tube is made by prescribed requirement in 304 stainless steel straight square tubes using bending machine first；
2) 304 stainless steel materials of smooth mistake are cut into top panel and lower panel using line cutting technology；
3) it will degrease and rusty stain after the cleaning of top panel, lower panel and ripple square tube, and be put into dryer and be dried for standby；
4) ripple square tube is assembled in parallel to each other by 2 times of tube wall spacing and 180 ° of phase differences and forms ripple square tube core,
And it is fixed with tooling spare；
5) Ni-Zr-P solder paste is uniformly smeared into the ripple square tube core face parallel with top panel and lower panel, is drying
80 DEG C of drying, are then charged into high temperature brazing furnace and are welded, slow cooling comes out of the stove to obtain ripple side to room temperature after the completion of welding in case
Tube core interlayer body plate.
The soldering: vacuum degree control is 10-3Pa or more rises to 1000-1200 DEG C of heat preservation from room temperature with 1 DEG C/min speed
1 hour, then furnace cooling.
According to thin plate stable theory, the characteristics of ripple rhs-structure, is to compress straight tube when being divided into multiple sub-, each
Sub- side is constrained by stable prism, the stability of thin plate is greatly strengthened, to improve the utilization rate of core material.Based on
Upper theory, the relatively straight tube core body of ripple rhs-structure have stronger specific strength.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (4)
1. a kind of ripple square tube core sandwich, it is characterised in that: including top panel (1) and lower panel (4), the top panel
(1) ripple square tube core (3) is provided between lower panel (4), the ripple square tube core (3) is by multiple hollow ripple sides
Pipe (2) is arranged parallel to each other composition, and the corrugated shape of the ripple square tube (2) is sine bellows, section of the ripple square tube (2)
Face is square section or rectangular cross-sectional, is ripple square tube core, the adjacent wave by 1~2 times of tube wall spacing assembled parallel
Phase difference is 0 °~180 ° between line square tube (2), and the top panel (1) is different with the thickness of lower panel (4).
2. a kind of ripple square tube core sandwich according to claim 1, which is characterized in that the top panel (1), under
Panel (4) and ripple square tube (2) are made of any one of stainless steel, aluminium alloy or titanium alloy material.
3. a kind of preparation method of ripple square tube core sandwich as claimed in claim 1 or 2, which is characterized in that including
Following steps:
S1, ripple square tube is made in straight square tube bending by sine bellows；
S2, by the plate cutting of smooth mistake at top panel and lower panel；
S3, the cleaning top panel, lower panel and ripple square tube, are put into dryer and are dried for standby；
S4, multiple ripple square tubes, which are parallel to each other, assembles corrugated square tube core, and fixation is spare；
S5, ripple square tube core described in step S4 is connect with top panel described in step S3, lower panel ripple square tube core is made
Sandwich.
4. a kind of ripple square tube core sandwich preparation method according to claim 3, it is characterised in that: the step
In S5, vacuum degree 10 is kept-2~10-3Pa rises to 550~1200 DEG C from room temperature with 1 DEG C/min speed, will using high temperature brazing
The ripple square tube core sandwich is made in the top panel, ripple square tube core and lower panel, keeps the temperature 10min~60min,
Slow cooling is to room temperature.
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| CN201710042624.3A CN106827713B (en) | 2017-01-20 | 2017-01-20 | A kind of ripple square tube core sandwich and preparation method thereof |
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| CN201710042624.3A CN106827713B (en) | 2017-01-20 | 2017-01-20 | A kind of ripple square tube core sandwich and preparation method thereof |
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| CN106827713B true CN106827713B (en) | 2019-03-01 |
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| CN109483981B (en) * | 2018-11-22 | 2020-11-06 | 华侨大学 | Honeycomb sandwich plate with embedded multi-level structure |
| CN110435256B (en) * | 2019-08-30 | 2021-03-30 | 哈尔滨工程大学 | Rectangular tube unit cell absolute poisson ratio honeycomb sandwich structure and preparation method thereof |
| 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 |
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Effective date of registration: 20220817 Address after: 401420 Chongqing Qijiang Industrial Park Patentee after: Chongqing Gongbang Industry (Group) Co.,Ltd. Address before: Room 502, building 1, No. 40, xiayuangang East Street, Tianhe District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Boyi Intellectual Property Operation Co.,Ltd. Effective date of registration: 20220817 Address after: Room 502, building 1, No. 40, xiayuangang East Street, Tianhe District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Boyi Intellectual Property Operation Co.,Ltd. Address before: Beilin District Xianning West Road 710049, Shaanxi city of Xi'an province No. 28 Patentee before: XI'AN JIAOTONG University |
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