CN106827713A - A kind of ripple square tube core body sandwich and preparation method thereof - Google Patents

A kind of ripple square tube core body sandwich and preparation method thereof Download PDF

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Publication number
CN106827713A
CN106827713A CN201710042624.3A CN201710042624A CN106827713A CN 106827713 A CN106827713 A CN 106827713A CN 201710042624 A CN201710042624 A CN 201710042624A CN 106827713 A CN106827713 A CN 106827713A
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China
Prior art keywords
square tube
core body
ripple
tube core
ripple square
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Granted
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CN201710042624.3A
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Chinese (zh)
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CN106827713B (en
Inventor
张钱城
赵振宇
韩宾
卢天健
金峰
李飞皓
赵中南
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Chongqing Gongbang Industry Group Co ltd
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Xian Jiaotong University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/01Layered products comprising a layer of metal all layers being exclusively metallic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/18Layered products comprising a layer of metal comprising iron or steel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/20Layered products comprising a layer of metal comprising aluminium or copper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer 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
    • B32B3/20Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer 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

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  • Laminated Bodies (AREA)

Abstract

The invention discloses a kind of ripple square tube core body sandwich and preparation method thereof.The present invention relates to sandwich technical field.The ripple square tube core body sandwich is made up of top panel, ripple square tube core body and lower panel.The present invention replaces straight square tube core body with ripple square tube core body, the structure is that the mechanical characteristics such as its specific strength, specific stiffness are further improved on the basis of straight tube core, and make it be leading passage flowing coefficient of heat conduction enhancing more than 50% in transition flow, simultaneously because square tube type core body can need to be designed with the contact area of upper and lower panel according to cutting performance, special jig need not be processed on core body, so as 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, is especially had a extensive future in the load-carrying construction required with heat transfer.

Description

A kind of ripple square tube core body sandwich and preparation method thereof
【Technical field】
The invention belongs to technical field of composite materials, and in particular to a kind of ripple square tube core body sandwich and its preparation side Method, particularly a kind of composite with multi-functional characteristic.
【Background technology】
Ultra light porous metal material is in the last few years as prepared by material and mechanical manufacturing technology is developed rapidly An existing class Multifunction material.This kind of material has high porosity, and its corresponding micro-structural can be divided into unordered by regular degree With orderly two major class, 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 energy.For in the research of the lattice structure capability of antidetonance, Fu Jini Sub- university Wadley professors team proposes a kind of to be horizontally staggered the straight square tube of arrangement as the sandwich of core body, structure tool The characteristics of having preparation process is simple, but because rhs-structure tube wall is susceptible to Euler's buckling, cause its load-carrying properties and energy-absorbing It is less efficient.Based on above reason, on the basis of Nogata tubular construction, the present invention replaces straight square tube using ripple square tube, both may be used The characteristics of succession straight tube structure prepares simple, can improve its load-carrying properties and energy absorbing efficiency, while can further strengthen the knot again The heat transfer property of structure.
【The content of the invention】
The technical problems to be solved by the invention are to be directed to above-mentioned deficiency of the prior art, there is provided one kind has mechanics concurrently The multifunctional composite of load-carrying properties (specific strength, specific stiffness, than energy-absorbing) and heat management function.Replace by with ripple square tube Straight square tube and obtain the ripple square tube core body sandwich with multi-functional characteristic.
The present invention uses following technical scheme:
A kind of ripple square tube core body sandwich, including top panel and lower panel, set between the top panel and lower panel Ripple square tube core body is equipped with, the wavy channel core body is arranged parallel to each other by multiple hollow ripple square tubes and constituted.
Further, the bellows-shaped 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 Any one is made.
A kind of preparation method of ripple square tube core body sandwich, comprises the following steps:
S1, straight square tube bending is made ripple square tube by sine bellows;
S2, by the plate cutting of smooth mistake into top panel and lower panel;
S3, the cleaning top panel, lower panel and ripple square tube, are put into dry for standby in dryer;
S4, be parallel to each other multiple ripple square tubes the corrugated square tube core body of assembling, and fixation is standby;
S5, ripple square tube core body described in step S4 is connected with top panel, lower panel described in step S3 it is made ripple square tube Core body 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 body 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 10-2~10-3Pa is kept, is risen to from room temperature with 1 DEG C/min speed 550~1200 DEG C, the top panel, ripple square tube core body and lower panel are made by the ripple square tube core body using high temperature brazing Sandwich, is incubated 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 body sandwich, is made up of top panel, ripple square tube core body and lower panel, Straight square tube is replaced by using ripple square tube and the ripple square tube core body sandwich with multi-functional characteristic is obtained, makes it in mistake It is leading passage flowing coefficient of heat conduction enhancing more than 50% to cross stream, and the structure is further carried on the basis of Nogata tubular construction High specific strength, specific stiffness and compare energy absorption characteristics.
Further, sine bellows square tube can be improved while the flowing heat transfer characteristic of ripple square tube core body is improved The resistance to compression stability of sandwich.
Further, certain special occasions, such as shock resistance or antiknock situation, using upper and lower panel not uniform thickness design are being considered The mechanical characteristic of ripple square tube core body sandwich can further be improved.
The present invention also provides a kind of ripple square tube core body sandwich preparation method, by sine bellows by straight square tube bending system Corrugated square tube, by plate, lower panel and ripple square tube above cutting by after drying and processing, according to a determining deviation and phase difference Connection is made sandwich, replaces straight square tube by using ripple square tube and obtains the ripple square tube core body with multi-functional characteristic Sandwich, because square tube type core body can need to be designed with the contact area of upper and lower panel according to cutting performance, it is not necessary to Special jig is processed on core body, so as to simplify processing technology, the structure is further on the basis of Nogata tubular construction Improve specific strength, specific stiffness and compare energy absorption characteristics.
Further, the flow regime of different fluid can be controlled by changing ripple lath phase difference, is optimal stream Dynamic heat transfer coefficient, wavy channel core body relative density can be changed by adjusting ripple square tube spacing, and structure is improved to greatest extent Mechanical property.
Further, the present invention carries out the welding of upper and lower panel and core body, the method operation letter using Vacuum Soldering Technology Just, technology maturation, panel is high with core body bonding strength.
In sum, structure of the invention has high specific strength, high specific stiffness and excellent thermal conduction characteristic, in space flight boat Sky, ship, automobile, machinery and field of civil engineering have wide application prospect, especially in the load knot required with heat transfer Had a extensive future in structure.
Below by drawings and Examples, technical scheme is described in further detail.
【Brief description of the drawings】
Fig. 1 is the structural representation of ripple square tube core body sandwich of the present invention;
Fig. 2 is ripple rhs-structure schematic diagram of the present invention.
Wherein:1. top panel;2. ripple square tube;3. ripple square tube core body;4. lower panel.
【Specific embodiment】
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected;Can Being to mechanically connect, or electrically connect;Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
Refer to shown in Fig. 1 and Fig. 2, the invention discloses a kind of ripple square tube core body sandwich, including the He of top panel 1 Lower panel 4, is provided with ripple square tube core body 3 between the top panel 1 and lower panel 4, the wavy channel core body 3 is by multiple ripples Line square tube 2 is parallel to each other composition.
Wherein, the bellows-shaped of the ripple square tube is sine bellows, the thickness of top panel 1 and lower panel 4 can with identical, Can also differ, 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 body sandwich preparation method, comprise the following steps:
S1, straight square tube bending is made ripple square tube by sine bellows;
The ripple Box Section is square section or rectangular cross-sectional;
S2, by the plate cutting of smooth mistake into top panel and lower panel;
S3, the cleaning top panel, lower panel and ripple square tube, are put into dry for standby in dryer;
S4, be parallel to each other multiple ripple square tubes the corrugated square tube core body of assembling, and fixation is standby;
The ripple square tube is ripple square tube core body 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 body described in step S4 is connected with top panel, lower panel described in step S3 it is made ripple square tube Core body sandwich.
Keep vacuum 10-2~10-3Pa, rises to 550~1200 DEG C, using high temperature brazing with 1 DEG C/min speed from room temperature The top panel, ripple square tube core body and lower panel are made the ripple square tube core body sandwich, insulation 10min~ 60min, slow cooling to room temperature.
Embodiment one:
1) 1060 aluminium alloy straight square tubes are made sine bellows square tube by regulation requirement first by bending machine;
2) 1060 aluminum alloy plate materials of smooth mistake are cut into top panel and lower panel using line cutting technology;
3) go to degrease and rusty stain after cleaning top panel, lower panel and ripple square tube, be put into dry for standby in dryer;
4) ripple square tube is assembled to be formed ripple square tube core body in parallel to each other by 1 times of tube wall spacing and 90 ° of phase differences, and Fix standby with frock;
5) by uniform commercially available aluminium soldering cream at ripple square tube core body and upper and lower panel binding site, in an oven 40~50 DEG C drying, be then charged into being welded in high temperature brazing stove, slow cooling to room temperature is come out of the stove and obtains ripple square tube core body after the completion of welding Sandwich plate.
The soldering:Vacuum degree control is 10-3Pa, 550~620 DEG C of insulation 10min are risen to 1 DEG C/min speed from room temperature ~1h.
Embodiment two:
1) TC4 titanium alloys straight square tube is made semicircle ripple square tube by regulation requirement first by bending machine;
2) the TC4 titanium alloy plates of smooth mistake are cut into top panel and lower panel using line cutting technology;
3) go to degrease and rusty stain after cleaning top panel, lower panel and ripple square tube, be put into dry for standby in dryer;
4) ripple square tube is assembled to be formed ripple square tube core body in parallel to each other by 2 times of tube wall spacing and 180 ° of phase differences, And fix standby with frock;
5) by the face uniform application Ag base solder pastes that ripple square tube core body is parallel with top panel and lower panel, in an oven 80 DEG C of drying, are then charged into being welded in high temperature brazing stove, and slow cooling to room temperature is come out of the stove and obtains ripple square tube core after the completion of welding Interlayer body plate.
The soldering:Vacuum degree control is 10-2More than Pa, 830-900 DEG C of insulation is risen to 1 DEG C/min speed from room temperature 10min, then furnace cooling.
Embodiment three:
1) 304 stainless steel straight square tubes are made semicircle ripple square tube by regulation requirement first by bending machine;
2) 304 stainless steel materials of smooth mistake are cut into top panel and lower panel using line cutting technology;
3) go to degrease and rusty stain after cleaning top panel, lower panel and ripple square tube, be put into dry for standby in dryer;
4) ripple square tube is assembled to be formed ripple square tube core body in parallel to each other by 2 times of tube wall spacing and 180 ° of phase differences, And fix standby with frock;
5) by the face uniform application Ni-Zr-P solder pastes that ripple square tube core body is parallel with top panel and lower panel, drying 80 DEG C of drying, are then charged into being welded in high temperature brazing stove in case, and slow cooling is come out of the stove to room temperature and obtains ripple side after the completion of welding Tube core interlayer body plate.
The soldering:Vacuum degree control is 10-3More than Pa, 1000-1200 DEG C of insulation is risen to 1 DEG C/min speed from room temperature 1 hour, then furnace cooling.
Be according to thin plate stable theory, the characteristics of ripple rhs-structure by straight tube compression while be divided into many it is sub- while, each Sub- side is constrained by the prism of stabilization, the stability of thin plate is greatly strengthen, so as to improve the utilization rate of core material.Based on Upper theory, the relatively straight tube core body of ripple rhs-structure has stronger specific strength.
Above content is only explanation technological thought of the invention, it is impossible to limit protection scope of the present invention with this, every to press According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within claims of the present invention Protection domain within.

Claims (9)

1. a kind of ripple square tube core body sandwich, it is characterised in that:Including top panel (1) and lower panel (4), the top panel (1) ripple square tube core body (3) is provided with and lower panel (4) between, the wavy channel core body (3) is by multiple hollow ripple sides Pipe (2) is arranged parallel to each other composition.
2. a kind of ripple square tube core body sandwich according to claim 1, it is characterised in that:The ripple square tube (2) Bellows-shaped be sine bellows.
3. a kind of ripple square tube core body sandwich according to claim 1, it is characterised in that the top panel (1) and The thickness of lower panel (4) is different.
4. a kind of ripple square tube core body sandwich according to claim 1, it is characterised in that the top panel (1), under Panel (4) and ripple square tube (2) are made by any one in stainless steel, aluminium alloy or titanium alloy material.
5. a kind of preparation method of ripple square tube core body sandwich as any one of Claims 1-4, its feature exists In comprising the following steps:
S1, straight square tube bending is made ripple square tube by sine bellows;
S2, by the plate cutting of smooth mistake into top panel and lower panel;
S3, the cleaning top panel, lower panel and ripple square tube, are put into dry for standby in dryer;
S4, be parallel to each other multiple ripple square tubes the corrugated square tube core body of assembling, and fixation is standby;
S5, ripple square tube core body described in step S4 is connected with top panel, lower panel described in step S3 it is made ripple square tube core body Sandwich.
6. a kind of ripple square tube core body sandwich preparation method according to claim 4, it is characterised in that:Step S1 In, the ripple Box Section is square section or rectangular cross-sectional.
7. a kind of ripple square tube core body sandwich preparation method according to claim 4, it is characterised in that:Step S4 In, the ripple square tube is ripple square tube core body by 1~2 times of tube wall spacing assembled parallel.
8. a kind of ripple square tube core body sandwich preparation method according to claim 4, it is characterised in that:Step S4 In, phase difference is 0 °~180 ° between the adjacent ripple square tube.
9. a kind of ripple square tube core body sandwich preparation method according to claim 4, it is characterised in that:The step In S5, vacuum 10 is kept-2~10-3Pa, 550~1200 DEG C are risen to 1 DEG C/min speed from room temperature, will using high temperature brazing The top panel, ripple square tube core body and lower panel are made the ripple square tube core body sandwich, are incubated 10min~60min, Slow cooling is to room temperature.
CN201710042624.3A 2017-01-20 2017-01-20 A kind of ripple square tube core sandwich and preparation method thereof Active CN106827713B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109483981A (en) * 2018-11-22 2019-03-19 华侨大学 A kind of honeycomb sandwich plate of embedded multi-level structure
CN110435256A (en) * 2019-08-30 2019-11-12 哈尔滨工程大学 A kind of absolute Poisson's ratio honeycomb sandwich structure of rectangular tube unit cell 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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CN104527144A (en) * 2014-11-26 2015-04-22 上海复合材料科技有限公司 Lightweight multi-functionalization interlayer-structure plate and manufacture method thereof

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CN104527144A (en) * 2014-11-26 2015-04-22 上海复合材料科技有限公司 Lightweight multi-functionalization interlayer-structure plate and manufacture method thereof

Non-Patent Citations (2)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109483981A (en) * 2018-11-22 2019-03-19 华侨大学 A kind of honeycomb sandwich plate of embedded multi-level structure
CN109483981B (en) * 2018-11-22 2020-11-06 华侨大学 Honeycomb sandwich plate with embedded multi-level structure
CN110435256A (en) * 2019-08-30 2019-11-12 哈尔滨工程大学 A kind of absolute Poisson's ratio honeycomb sandwich structure of rectangular tube unit cell and preparation method thereof
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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