CN102816956A - Aluminum alloy composite and engine cover plate made of same - Google Patents
Aluminum alloy composite and engine cover plate made of same Download PDFInfo
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- CN102816956A CN102816956A CN2012103106441A CN201210310644A CN102816956A CN 102816956 A CN102816956 A CN 102816956A CN 2012103106441 A CN2012103106441 A CN 2012103106441A CN 201210310644 A CN201210310644 A CN 201210310644A CN 102816956 A CN102816956 A CN 102816956A
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Abstract
The invention discloses an aluminum alloy composite which comprises an aluminum alloy base body. Closed holes are irregularly uniformly distributed in the aluminum alloy base body. Fireproof fibers are arranged in the holes of the aluminum alloy base body. Damping of the aluminum alloy composite is improved by the aid of the holes and the fireproof fibers therein, and damping and noise reduction are realized. Further, the invention further discloses an engine cover plate made of the aluminum alloy composite. The engine cover plate has higher mechanical performance and excellent damping and noise reduction effects.
Description
Technical field
The present invention relates to a kind of Al alloy composite, relate to the engine hood panel that adopts this material simultaneously.
Background technology
The hole damper mechanism is a kind of through increasing some holes at material internal, makes vibration or voice response when propagating, pass through to produce obviously decay, the method that material damping is increased behind the hole.The hole damper mechanism has become a kind of important means of development high damping material at present; As the honeycomb duraluminum that at present has been applied at building decoration and packaging industry; It mainly is the comb core that accompanies hole with holes at the aluminum alloy materials middle part; Energy is decayed when the comb core through the middle part, and this honeycomb duraluminum has characteristics such as fire prevention, insulation, sound insulation, vibrationproof.
Mover in the course of the work; Can produce bigger vibrations and noise; And lids such as present engine clutch lid, a magneto cover type part all adopts traditional aluminum alloy materials production, and material structure is basic aluminum alloy organization's structure, the weak effect of its shockproof noise control.Therefore, adopting high damping material to make engine part is an important development direction of engine art.
Because mover can produce powerful vibration and impact in operation process, its part is required to possess certain intensity and rigidity.And the high damping material that general employing hole damper mechanism is made; From the influence of material structure to mechanical property; The material internal hole can cause the mechanical property of porous material relatively poor as a kind of defective, like the honeycomb duraluminum of above-mentioned employing hole damper mechanism, though the unit weight specific tenacity of whole sandwich plate and specific rigidity are all above the conventional aluminum alloy material; But the tensile strength of integral material and rigidity are all not high, are difficult to satisfy the practical application of mover.Therefore, a kind of material that not only satisfies the engine application requirement but also have the high damping characteristic being provided, is to promote the key of high damping material in the engine art development and application.
Summary of the invention
In order to overcome the defective of the shockproof noise control weak effect of engine material in the prior art, the object of the present invention is to provide a kind of Al alloy composite of high damping, its good mechanical property satisfies the application requiring of mover.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Al alloy composite comprises alloy matrix aluminum, is evenly distributed with irregular blind hole hole in the said alloy matrix aluminum; Be provided with refractory fibre in the hole of alloy matrix aluminum.The effect of damping noise reduction is played in the damping that Al alloy composite of the present invention utilizes hole and refractory fibre to improve material.
Further, the diameter of described hole is less than 3.5mm, and is little to the intensity effect of alloy matrix aluminum because the size of hole is little, guaranteed the tensile strength and the rigidity of Al alloy composite, makes it can satisfy the practical application of mover.
Further, said refractory fibre be resistant to elevated temperatures and with the aluminum silicate fiber or the graphite fibre of duraluminum consistency difference.
Further, said refractory fibre is strip and/or particulate state.
Further, the refractory fibre in the described hole has one or more.
Further, the refractory fibre two ends in the described hole are attached at the hole inwall, or the one of which end is attached on the hole inwall, and the other end hovers in the hole.
Further, said refractory fibre also is distributed in outside the hole of alloy matrix aluminum.
A kind of engine hood panel, said engine hood panel adopt aforesaid right to require described Al alloy composite to be made.
The invention has the beneficial effects as follows:
Compare with the conventional aluminum alloy material that existing hood class part uses, not only damping noise reduction effect of this material is obvious, and simultaneously because inner hole also can make the density of material decrease, so the use of this material also has certain lightweight effect; Adopt the engine hood panel of this material, it is little that its physical strength and the engine hood panel that adopts the conventional aluminum alloy material to make are compared difference, and have superior damping noise reduction performance.
Description of drawings
Fig. 1 is an Al alloy composite internal structure synoptic diagram of the present invention.
Embodiment
With reference to Fig. 1, the present invention is further specified below in conjunction with accompanying drawing and embodiment.
Al alloy composite of the present invention; Be evenly distributed with discontinuous cap holes 2 in alloy matrix aluminum 1 inside; The diameter of hole 2 is less than 3.5mm, in hole 2, exist one or many refractory fibres 3, refractory fibre 3 to be preferably resistant to elevated temperatures and with inconsistent aluminum silicate fiber of duraluminum or graphite fibre; Its shape can be strip, also can be particulate state; Because the shape relation of refractory fibre 3, the two ends of said refractory fibre 3 are attached at hole 2 inwalls, or an end of refractory fibre 3 is attached on hole 2 inwalls, and the other end hovers in the hole 2.
The production technique of Al alloy composite production technique of the present invention and former aluminum alloy materials is basic identical; There is not special complicated technology flow process; Production cost does not have too big variation yet, and its production process is following: 1., in castingprocesses, add a certain amount of refractory fibre 3 and make toward molten aluminium is inner, the refractory fibre 3 of interpolation is incompatible with duraluminum; Therefore in the melt solidifying crystallisation process; It is poor that refractory fibre 3 combines with molten aluminium, the weak interface that causes between refractory fibre 3 and the aluminium body forming small hole 2 or form fiber, and the formation position of hole 2 or weak interface, size is with fiber size and distribute relevant.2., after adding refractory fibre 3, melt is carried out suitable stirring, refractory fibre 3 is evenly distributed; However, the refractory fibre 3 of adding still can not scatter at molten aluminium fully, and the refractory fibre 3 after perhaps adding also might be reunited, and therefore refractory fibre 3 quantity in some hole 2 or the weak interface can be above one in the actual molded material; In addition, also have some refractory fibres 3 in alloy matrix aluminum 1, not form hole 2, so this refractory fibre 3 can be distributed in outside the hole 2.Al alloy composite of the present invention only need carry out proper process processing (like machining, thermal treatment etc.) through the casting technique moulding behind the part casting, on using, belong to the once shaped material; Different with the application mode of existing foaming porous material; The latter produces porous, expanded section bar mostly earlier, and section bar generally can not directly be used, and need follow-uply carry out corresponding transformation to section bar again; Causing on the one hand, can there be inventory problem in section bar; The application meeting of material is limited because of section bar on the other hand, control and adjustment inconvenience, and range of application is narrow relatively.
Al alloy composite of the present invention has the characteristic of high damping; And the difference of its intensity and hardness and matrix y alloy y is little; Apparently higher than other porous, expanded materials, be applicable to engine clutch lid, magneto cover etc. not high to mechanical property requirements, but engine luggine and externally in the noise radiation as the lid class part of important travel path.This Al alloy composite is not born obviously stressed part to hood etc. specially and is developed; In alloy matrix aluminum 1, be provided with pore space structure; Though reduced the mechanical property of material, can significantly improve the ratio of damping of material, the common relatively aluminum substrate material of its damping capacity has improved more than 1 times; Vibration and noise energy are had tangible attenuating, significantly improve the NVH performance of mover; And its inside holes 2 relative honeycomb duraluminums are more tiny, and material is an integral type, and its intensity and hardness and common aluminium alloy casting spare are more or less the same, and related mechanical properties can satisfy the use of some part of mover.The generation of the high damping characteristic of Al alloy composite of the present invention derives from two aspects: based on the defective damper mechanism of metal inside hole and weak interface form, this damping capacity is relevant with the size and the distributive law of hole 2 on the one hand; On the other hand because the refractory fibre 3 that adds itself just has the high damping characteristic; Therefore the damping capacity that makes matrix material can obtain corresponding increase; The increasing amount of this part damping capacity is relevant with the add-on of actual fibers; Therefore can obtain this kind material of different damping performance through the change to fiber size and add-on, operate easy to adjustly, flexibility is strong.
The engine hood panel that adopts the described Al alloy composite of the invention described above to be made; The engine hood panel that its physical strength and conventional aluminum alloy material are made is identical or difference is little; And have superior damping noise reduction performance, simultaneously because the setting of hole makes it obtain light-weighted effect.This engine hood panel is the engine part of being made by high damping material, promotes high damping material in the engine art widespread use, is significant.
The above is merely preferential embodiment of the present invention, as long as realize that with basic identical means the technical scheme of the object of the invention all belongs within protection scope of the present invention.
Claims (9)
1. Al alloy composite is characterized in that comprising:
Alloy matrix aluminum (1) is evenly distributed with irregular blind hole hole (2) in the said alloy matrix aluminum (1);
Refractory fibre (3), said refractory fibre (3) are arranged in the hole (2) of alloy matrix aluminum (1).
2. a kind of Al alloy composite according to claim 1 is characterized in that: the diameter of described hole (2) is less than 3.5mm.
3. a kind of Al alloy composite according to claim 1 is characterized in that: said refractory fibre (3) for resistant to elevated temperatures and with the aluminum silicate fiber or the graphite fibre of duraluminum consistency difference.
4. a kind of Al alloy composite according to claim 1 is characterized in that: said refractory fibre (3) is strip and/or particulate state.
5. a kind of Al alloy composite according to claim 1 is characterized in that: the refractory fibre (3) in the described hole (2) has one or more.
6. a kind of Al alloy composite according to claim 1 is characterized in that: refractory fibre (3) two ends in the described hole (2) are attached at hole (2) inwall.
7. a kind of Al alloy composite according to claim 1 is characterized in that: refractory fibre (3) one ends in the described hole (2) are attached on hole (2) inwall, and the other end hovers in the hole (2).
8. a kind of Al alloy composite according to claim 1 is characterized in that: said refractory fibre (3) also is distributed in outside the hole (2) of alloy matrix aluminum (1).
9. an engine hood panel is characterized in that said engine hood panel adopts the described Al alloy composite of aforesaid right requirement to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103106441A CN102816956A (en) | 2012-08-28 | 2012-08-28 | Aluminum alloy composite and engine cover plate made of same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103106441A CN102816956A (en) | 2012-08-28 | 2012-08-28 | Aluminum alloy composite and engine cover plate made of same |
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| CN102816956A true CN102816956A (en) | 2012-12-12 |
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| CN2012103106441A Pending CN102816956A (en) | 2012-08-28 | 2012-08-28 | Aluminum alloy composite and engine cover plate made of same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636988A (en) * | 2016-12-16 | 2017-05-10 | 安徽宝恒新材料科技有限公司 | Fireproof aluminum alloy |
| CN109957742A (en) * | 2017-12-22 | 2019-07-02 | 宜兴安纳西智能机械设备有限公司 | A kind of horizontal wrap-up cover plate materials |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1428239A (en) * | 2001-12-25 | 2003-07-09 | 中国科学院金属研究所 | Preparation method of porous marmem damping composite material covered with metal |
| CN102002607A (en) * | 2010-12-14 | 2011-04-06 | 东莞理工学院 | Method for preparing foamed aluminum by foaming melt |
| CN102172792A (en) * | 2011-03-04 | 2011-09-07 | 北京科技大学 | Method for preparing structural material of floors and coaches of high-speed trains |
-
2012
- 2012-08-28 CN CN2012103106441A patent/CN102816956A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1428239A (en) * | 2001-12-25 | 2003-07-09 | 中国科学院金属研究所 | Preparation method of porous marmem damping composite material covered with metal |
| CN102002607A (en) * | 2010-12-14 | 2011-04-06 | 东莞理工学院 | Method for preparing foamed aluminum by foaming melt |
| CN102172792A (en) * | 2011-03-04 | 2011-09-07 | 北京科技大学 | Method for preparing structural material of floors and coaches of high-speed trains |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636988A (en) * | 2016-12-16 | 2017-05-10 | 安徽宝恒新材料科技有限公司 | Fireproof aluminum alloy |
| CN109957742A (en) * | 2017-12-22 | 2019-07-02 | 宜兴安纳西智能机械设备有限公司 | A kind of horizontal wrap-up cover plate materials |
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Application publication date: 20121212 |