CN1760027A - Steel cellular sandwich vibration damping plate inuse for cars, and preparation method - Google Patents
Steel cellular sandwich vibration damping plate inuse for cars, and preparation method Download PDFInfo
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- CN1760027A CN1760027A CN 200510086595 CN200510086595A CN1760027A CN 1760027 A CN1760027 A CN 1760027A CN 200510086595 CN200510086595 CN 200510086595 CN 200510086595 A CN200510086595 A CN 200510086595A CN 1760027 A CN1760027 A CN 1760027A
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Abstract
A composite vibration-damping steel plate with honeycomb sandwich for car is composed of two high-strength sheets and a honeycomb sandwich. Its preparing process includes such steps as making honeycomb sandwich by punching, putting the filler between the honeycomb sandwich and each surface sheet, and combining, heating to fuse said filler for 2-4 min, rolling, diffusion annealing and isothermal solidifying.
Description
Technical field
The invention belongs to structure function material field, a kind of steel cellular sandwich vibration damping plate inuse for cars and preparation method thereof particularly is provided.Be applicable to body of a motor car covering, body structure and car door etc.
Background technology
Using more damping block is to cover one deck viscoplasticity resin at surface of steel plate, this damping block makes serviceability temperature be very limited because of accompanying one deck resin material, and exists in the actual production process of auto parts: 1) inside and outside laminate inconsistent phenomenon during drawing; 2) bulge phenomenon during drawing; 3) the conduction bad phenomenon of spot welding; Inside and outside laminate segregation phenomenon when 4) welding; 5) there is strong and stimulating smell phenomenon in the damping block welding.Steel cellular sandwich vibration damping plate inuse is because the metallurgical binding between core and the substrate, except that having light weight, intensity height, surfacing, vibration damping, sound-absorbing, characteristics such as heat insulation, also have high temperature resistant, anti-softening, fatigue proof performance, and can recycling, compliance with environmental protection requirements.Therefore, need a kind of novel damping composite plate of invention.
Summary of the invention
The object of the present invention is to provide a kind of steel cellular sandwich vibration damping plate inuse for cars and preparation method thereof, realized the interface in conjunction with firmly, be easy to be shaped, the steel cellular sandwich vibration damping plate inuse for cars of serialization production and recyclable utilization.
Technical solution of the present invention is:
According to instructions for use, from shear strength, bending strength, bending rigidity, critical buckling load, intrinsic frequency, six performance parameters of quality honeycomb core is carried out multi-objective optimization design of power, according to optimal design structure processing honeycomb core.
The cellular sandwich composite plate is the panel material strong by two layers of thin, therebetween one layer thickness be 5～8 times of panels comb core form, comb core adopts the method processing of punching press.
Described panel material of the present invention is common carbon steel board or corrosion resistant plate; Thickness is 0.6～1.2 millimeter; Described comb core is a straight carbon steel.
Between panel and honeycomb core, put into homemade inserts, treat that with three layers composite is heated to the melt temperature of middle inserts, be incubated 2～4 minutes, inserts is fully melted.Enter then in the milling train, carry out compoundly under 10%～15% deflection, make between panel and core the diffusion generation isothermal solidification by atom, formative tissue connects the surface uniformly.Steel plate after compound carries out diffusion annealing.
Homemade inserts component of the present invention is: be that basic element, zinc are that main alloy element, manganese are main adding elements with copper, add the boron and the rare earth of a spot of silicon, tin, nickel, trace again.The composition range of each component is (be weight % :): Sn:1.70～2.50 wherein, and Ni:1.80～2.50, Mn:8.50～9.50, Si:0.50～0.80, B:0.04～0.05, Zn:33～38, rare earth: 0.02～0.03, all the other are Cu.
Advantage of the present invention: allow that there is certain oxide-film in panel surface when transient liquid phase diffusion composite algorithm is produced cellular board, certain " from peace and quiet " ability is arranged, and compound interface has after isothermal solidification is finished and obviously is different from substrate and fills metal components, and under a stable condition, can not differentiate in the final microscopic structure and fill metal, have very high combined strength bination.Cellular board after compound is alleviating about 40% qualitatively than the solid slab of same size; First natural frequency reduces by 7%; The second order intrinsic frequency reduces by 7%.
Description of drawings
Fig. 1 is a steel cellular sandwich vibration damping plate inuse structural representation of the present invention.
Fig. 2 is the structural representation of honeycomb core plate of the present invention.
The specific embodiment
At first, adopt diversification thought, use orthogonal design method, set up the regression equation between wettability and alloying element.By optimal design, develop (weight %): Sn:1.70～2.50, Ni:1.80～2.50, Mn:8.50～9.50, Si:0.50～0.80, B:0.04～0.05, Zn:33～38, rare earth: 0.02～0.03, all the other are the middle inserts of Cu.
The 4 assembly sides that select wherein smelt, and have carried out the measured value of wettability and the comparison of predicted value (seeing Table 1).On the basis of prescription 4, added 0.03% rare earth element Re.Adopt differential thermal analysis to record the fusing point of 5 assembly sides to smelting the middle inserts that, its fusing point of 5 assembly sides obviously reduces (fusing point of Cu is 1084.5 ℃), reaches the requirement of this research.
Table 1 wettability predicted value and measured value are relatively
| Sequence number | Alloying element (wt%) | Wetting areas/mm 2 | |||||||
| Sn | Ni | Mn | Si | B | Ce | Zn | Predicted value | Measured value | |
| 1 | 1.71 | 1.87 | 8.67 | 0.58 | 0.045 | 33 | 174.40 | 163.58 | |
| 2 | 1.90 | 1.95 | 8.91 | 0.62 | 0.050 | 33 | 181.68 | 169.70 | |
| 3 | 2.33 | 2.16 | 9.23 | 0.71 | 0.050 | 35 | 192.55 | 171.55 | |
| 4 | 2.45 | 2.28 | 9.40 | 0.80 | 0.050 | 37 | 197.15 | 170.98 | |
| 5 | 2.45 | 2.28 | 9.40 | 0.80 | 0.050 | 0.03 | 37 | 172.85 | |
Table 2 helps the fusing point of multiple agent
| Sequence number | 1 | 2 | 3 | 4 | 5 |
| Fusing point (℃) | 801.9 | 784.8 | 785.5 | 801.3 | 800.9 |
Secondly, carry out the honeycomb sandwich structure design from mechanical property and damping property two aspects.
The basic design philosophy of sandwich structure is: panel is separated with fuse, to obtain bigger bending stiffness and to improve stability of structure as far as possible far.Design criteria is:
(1) sandwich must have enough shear strengths, prevents failure by shear;
(2) sandwich structure must have enough bending rigidities, produces destruction to avoid whole sandwich structure to produce excessive amount of deflection;
(3) when guaranteeing enough bending rigidities, also should consider the maximum deflection intensity that structure can be born;
(4) improve the critical buckling load that sandwich structure can bear, also promptly improved the stability of sandwich structure;
(5) honeycomb sandwich structure should have bigger vibration frequency and damping ratio under the prerequisite of same apparent size;
(6) preferably under the prerequisite of mechanical property and damping property, wish that the quality of structure is the lightest at honeycomb sandwich structure.
According to structural design criterion, from alleviating construction weight, improve six aspects of critical buckling load of shear strength, bending rigidity, bending strength, damping property and structure structure is analyzed, determine the objective function of optimization design function.Finally determine the thickness t of battenboard upper and lower panel with Multipurpose Optimal Method
f, core thickness h
c, the honeycomb lattice length of side d of regular hexagon honeycomb core and the size of honeycomb lattice wall thickness δ.According to instructions for use, table 3 between two kinds of specification cellular board sizes designing.
The cellular board size of table 3 optimization
| Numbering | Plate thickness (mm) | Core thickness (mm) | Honeycomb lattice wall (mm) | The honeycomb lattice length of side (mm) |
| 1 | 0.6 | 3 | 2.6 | 5.0 |
| 2 | 0.6 | 4.8 | 2.65 | 8.0 |
Undertaken core and substrate compound by following step then:
(1) utilize the size that designs to prepare the core of cellular sandwich damping block;
(2) prepare panel and the homemade inserts conform to design size;
(3) counter plate and core carry out surface treatment;
(4) between panel and honeycomb core, put into prescription 5 inserts, with three layers treat composite be heated in the middle of more than the melt temperature of inserts 30 ℃ (830 ℃), be incubated 2 minutes, inserts is fully melted.Enter then in the milling train, under 11% deflection, carry out compound.1# cellular board after compound has been carried out mechanical property and damping property test, and result of the test sees Table 4.
Table 4 damping block mechanical property and damping property
| Classification | Quality (g) | Shear strength (MPa) | Bending strength (MPa) | Bending rigidity (N.m) | Critical buckling load N | First natural frequency (KHz) | Honeycomb hole number (individual) |
| 1 #Plate | 283.02 | 104.40 | 327.0 | 616.9 | / | 1.2400 | 125 |
Claims (3)
1, a kind of steel cellular sandwich vibration damping plate inuse for cars is characterized in that: the cellular sandwich composite plate is by the two-layer panel material, and therebetween one layer thickness is that the comb core of 5～8 times of plate thicknesses is formed, and comb core adopts the method processing of punching press; Described panel material is common carbon steel board or corrosion resistant plate; Thickness is 0.6～1.2 millimeter, and described comb core is a straight carbon steel.
2, a kind of method for preparing the described steel cellular sandwich vibration damping plate inuse for cars of claim 1, it is characterized in that: between panel and comb core, put into homemade inserts, treat that with three layers composite is heated to the melt temperature of middle inserts, be incubated 2～4 minutes, inserts is fully melted; Enter then and realize 10%～15% distortion in the milling train, the steel plate after compound carries out diffusion annealing, reaches the compound requirement of transient liquid phase, makes between panel and core by the diffusion generation isothermal solidification of atom, and formative tissue connects the surface uniformly.
3, in accordance with the method for claim 2, it is characterized in that: described homemade inserts component comprises: copper, zinc, manganese, silicon, tin, nickel, boron, rare earth; The weight % of its component is: Sn:1.70～2.50, and Ni:1.80～2.50, Mn:8.50～9.50, Si:0.50～0.80, B:0.04～0.05, Zn:33～38, rare earth: 0.02～0.03, all the other are Cu.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100865958A CN100351074C (en) | 2005-10-12 | 2005-10-12 | Steel cellular sandwich vibration damping plate inuse for cars, and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100865958A CN100351074C (en) | 2005-10-12 | 2005-10-12 | Steel cellular sandwich vibration damping plate inuse for cars, and preparation method |
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| Publication Number | Publication Date |
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| CN1760027A true CN1760027A (en) | 2006-04-19 |
| CN100351074C CN100351074C (en) | 2007-11-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601086B (en) * | 2007-02-28 | 2012-04-18 | 埃尔塞乐公司 | Method for making an acoustic absorption panel in particular for the nacelle of an aircraft engine |
| CN103758904A (en) * | 2014-01-27 | 2014-04-30 | 重庆交通大学西南水运工程科学研究所 | Damping board based on negative poisson ratio structure |
| CN105058885A (en) * | 2015-08-06 | 2015-11-18 | 常州市新创复合材料有限公司 | Passenger car body composite board and manufacturing method thereof |
| CN109863077A (en) * | 2016-10-24 | 2019-06-07 | 本田技研工业株式会社 | The manufacturing method of automobile bottom board and automobile bottom board |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5248559A (en) * | 1975-10-16 | 1977-04-18 | Kondo Hiroaki | Method of making honeycomb board |
| JPH02223434A (en) * | 1988-10-20 | 1990-09-05 | Asahi Chem Ind Co Ltd | Sandwich panel using core, only edge face of which resin adheres to |
-
2005
- 2005-10-12 CN CNB2005100865958A patent/CN100351074C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601086B (en) * | 2007-02-28 | 2012-04-18 | 埃尔塞乐公司 | Method for making an acoustic absorption panel in particular for the nacelle of an aircraft engine |
| CN103758904A (en) * | 2014-01-27 | 2014-04-30 | 重庆交通大学西南水运工程科学研究所 | Damping board based on negative poisson ratio structure |
| CN103758904B (en) * | 2014-01-27 | 2016-03-09 | 重庆交通大学西南水运工程科学研究所 | A kind of damping sheet based on negative poisson ' s ratio structure |
| CN105058885A (en) * | 2015-08-06 | 2015-11-18 | 常州市新创复合材料有限公司 | Passenger car body composite board and manufacturing method thereof |
| CN105058885B (en) * | 2015-08-06 | 2017-07-04 | 常州市新创复合材料有限公司 | A kind of bus body composite plate and its manufacture method |
| CN109863077A (en) * | 2016-10-24 | 2019-06-07 | 本田技研工业株式会社 | The manufacturing method of automobile bottom board and automobile bottom board |
| US11230082B2 (en) | 2016-10-24 | 2022-01-25 | Honda Motor Co., Ltd. | Automobile floor panel and automobile floor panel manufacturing method |
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| CN100351074C (en) | 2007-11-28 |
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