CN204943007U - A kind of perforation foam aluminium plate - Google Patents
A kind of perforation foam aluminium plate Download PDFInfo
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- CN204943007U CN204943007U CN201520468910.2U CN201520468910U CN204943007U CN 204943007 U CN204943007 U CN 204943007U CN 201520468910 U CN201520468910 U CN 201520468910U CN 204943007 U CN204943007 U CN 204943007U
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- foamed aluminium
- perforation
- foam
- aluminium board
- board
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Abstract
The utility model discloses a kind of perforation foam aluminium plate.Perforation foam aluminium plate is different, half open-work that favours described foamed aluminium board surface of setting direction on a face of foamed aluminium board, or arranges half open-work respectively on two faces of foamed aluminium board, or arranges the full impregnated hole on through foamed aluminium board.This preparation of plates adopts high speed sandblasting formation high velocity jet bundle material spray to be mapped to need foamed aluminium to be processed surface, abrasive material is impacted and grinding foamed aluminium board, foam aluminium plate forms hole, by selecting nozzle structure, Buddha's warrior attendant Grains number or blasting pressure, obtain the sheet material of different perforation distributions rate, penetration hole diameter and different perforation form.This structure can either improve the sound absorption qualities of closed-cell aluminum foam further, and foamed aluminium board can be made again to obtain good mechanical property.And work efficiency is high, also improve the appearance quality of workpiece.Main as sound absorbing material.
Description
Technical field
The utility model relates to foam metal sound absorbing material, particularly relates to the closed cell foam aluminium plate that sound-absorbing structure carries out processing.
Background technique
The porous structure that closed-cell aluminum foam has with itself makes in field of acoustics, receive increasing concern.When closed-cell aluminum foam is left intact, its sound absorbing mechanism is exactly viscous sound absorption and heat transfer sound absorption substantially, though there is the sound absorption function of part in this case, does not have too many advantage in sound absorption qualities compared with other material.For improving closed-cell aluminum foam sound-absorbing structure performance, need design foamed aluminium being carried out to acoustic construction.According to sound absorption mechanism, need to form " aperture " structure, form Helmholtz resonant cavity, therefore will carry out piercing process to closed-cell aluminum foam., the common at present perforation means of foamed aluminium is mainly machine drilling, and the Chinese utility model patent of Authorization Notice No. CN2712945Y discloses a kind of perforated sound-absorbing foam aluminum, adopts the method for machining all to bore a hole or chadless on foamed aluminium; The Chinese utility model patent of Authorization Notice No. CN201689671U discloses a kind of Foamed aluminum sound absorbing plate, adopts mechanical stamping method to pass hole.Said method efficiency is low, and flexibility is poor, is difficult to the requirement meeting different pore size, punching rate and penetration depth.In addition the foamed aluminium material after machine drilling, mechanical property obviously declines, and limits the application of closed-cell aluminum foam in field of acoustics to a great extent.
Model utility content
The technical problem that the utility model solves is to provide the good and closed-cell aluminum foam that mechanical property is high of a kind of sound absorbing capabilities.
The utility model is a kind of, and the technological scheme that foam aluminium plate adopts of boring a hole is: a kind of perforation foam aluminium plate, comprises closed cell foam aluminium sheet, different, the hole that favours described foamed aluminium board surface of setting direction on described foamed aluminium board.
Further, the distributive law in described hole is 1 ~ 5%; Described bore dia is 0.5 ~ 3mm; Different, half open-work that favours described foamed aluminium board surface of setting direction on a face of described foamed aluminium board, hole depth is 1 ~ 6mm; Or different, half open-work that favours described foamed aluminium board surface of setting direction respectively on two faces of described foamed aluminium board, hole depth is 1 ~ 6mm; Or different, the full impregnated hole that favours described foamed aluminium board surface of setting direction on described foamed aluminium board.
The beneficial effects of the utility model are: the utility model perforation foam aluminium plate because perforation direction different, favour described foamed aluminium board surface, this structure can either improve the sound absorption qualities of closed-cell aluminum foam further, and foamed aluminium board can be made again to obtain good mechanical property;
The utility model sandblasting method of perforation processing is compared with machine drilling, by regulating shower nozzle, can different, the hole that favours described foamed aluminium board surface of machine direction, work efficiency is high, punching rate, aperture and penetration depth are easy to regulate, according to Choice and process half through hole or whole through hole, and can also can clear up the small burr of workpiece surface, improve the appearance quality of workpiece.
Accompanying drawing explanation
Fig. 1 is unilateral translucent hole foam aluminium plate generalized section;
Fig. 2 is full impregnated hole foam aluminium plate generalized section;
Fig. 3 is two-sided half open-work foam aluminium plate generalized section.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1 to Figure 3, perforation foam aluminium plate comprises closed cell foam aluminium sheet, and different, the hole that favours described foamed aluminium board surface of setting direction on described hole inwall, the angle of inclination is generally >0 ° ~ 15 °.The distributive law in described hole is 1 ~ 5%, and pore size distribution rate is the quantity of unit area perforation; Described bore dia is 0.5 ~ 3mm; The form in hole can be half open-work of not through foamed aluminium board, and semi-transparent hole depth is 1 ~ 6mm.Half open-work can be formed in the one side of foamed aluminium board, also can form half open-work on the two sides of foamed aluminium board.The form in hole can also be the open-work of through foamed aluminium board.
Perforation foamed aluminium board material processing method comprises the steps:
A. get the raw materials ready.Select the closed cell foam aluminium sheet of suitable density, specification for subsequent use;
B. shower nozzle is selected.Nozzle structure is selected according to perforation distributions rate.Table 1 is the relation of perforation distributions rate and nozzle structure.
Table 1
| Nozzle structure | Single head | Double end | 3 |
| Perforation distributions rate | 1～2％ | >2％～<4％ | 4～5％ |
C. emery material spray order number is selected.The emery material spray order number used is 50 ~ 300 orders.Table 2 is Buddha's warrior attendant Grains number and penetration hole diameter relation.
Table 2
| Buddha's warrior attendant Grains number | 100 ~ 110 orders | 120 ~ 130 orders | 140 ~ 150 orders |
| Penetration hole diameter | 0.5～1mm | 1～2mm | 2～3mm |
D. blasting pressure is selected.Sandblasting power is the pressurized air of 1 ~ 10Mpa.Table 3 is perforation form and blasting pressure relation.
Table 3
| Perforation form | Half open-work | Open-work |
| Blasting pressure | 1～8Mpa | 5～10Mpa |
E. sandblasting perforation.Adopt high speed sandblasting formation high velocity jet bundle material spray to be mapped to and need foamed aluminium to be processed surface, abrasive material is impacted and grinding foamed aluminium, the hole that direction is different, favour described foamed aluminium board surface is formed in foamed aluminium board, by selecting nozzle structure, Buddha's warrior attendant Grains number or blasting pressure, acquisition 1 ~ 5% perforation distributions rate, 0.5 ~ 3mm penetration hole diameter, perforation form are half through hole or whole through hole foam aluminium plate;
F. reprocessing.With water, foamed aluminium is rinsed after sandblasting, after drying at 80-100 DEG C of temperature, the grains of sand adhered to are purged clean.
Embodiment 1
Select the closed cell foam aluminium sheet that density is 0.3g/cm3, specification is 200 × 200 × 20mm (long × wide × high), sandblasting machine model is 4720P, 3 shower nozzles, regulates sandblasting machine pressure at 1MPa, adopt 100 order emery, sandblasting is carried out in foamed aluminium board face.Sandblasting terminates rear clear water and rinses well, then puts into 80 DEG C of drying in oven.Obtain the foam aluminium plate of perforation, measure acoustic absorptivity by GBJ88 " Code for measurement of soundabsorbing coefficient and specific acoustic inpedance of standingwave ".
Embodiment 2
Select the closed cell foam aluminium sheet that density is 0.3g/cm3, specification is 200 × 200 × 20mm, sandblasting machine model is DR4720P, double end shower nozzle, regulates sandblasting machine pressure at 3MPa, adopts 110 order emery, sandblasting is carried out in foamed aluminium board face.Sandblasting terminates rear clear water and rinses well, then puts into 80 DEG C of drying in oven.Obtain the foam aluminium plate of perforation, measure acoustic absorptivity by GBJ88 " Code for measurement of soundabsorbing coefficient and specific acoustic inpedance of standingwave ".
Embodiment 3
Select the closed cell foam aluminium sheet that density is 0.3g/cm3, specification is 200 × 200 × 20mm, sandblasting machine model is DR4720P, double end shower nozzle, regulates sandblasting machine pressure at 5MPa, adopts 120 order emery, sandblasting is carried out in foamed aluminium board face.Sandblasting terminates rear clear water and rinses well, then puts into 80 DEG C of drying in oven.Obtain the foam aluminium plate of perforation, measure acoustic absorptivity by GBJ88 " Code for measurement of soundabsorbing coefficient and specific acoustic inpedance of standingwave ".
Embodiment 4
Select the closed cell foam aluminium sheet that density is 0.3g/cm3, specification is 200 × 200 × 20mm, sandblasting machine model is DR-600-1P, double end shower nozzle, regulates sandblasting machine pressure at 7MPa, adopts 130 order emery, sandblasting is carried out in foamed aluminium board face.Sandblasting terminates rear clear water and rinses well, then puts into 80 DEG C of drying in oven.Obtain the foam aluminium plate of perforation, measure acoustic absorptivity by GBJ88 " Code for measurement of soundabsorbing coefficient and specific acoustic inpedance of standingwave ".
Embodiment 5
Select the closed cell foam aluminium sheet that density is 0.3g/cm3, specification is 200 × 200 × 20mm, sandblasting machine model is DR4720P, single head shower nozzle, regulates sandblasting machine pressure at 10MPa, adopts 150 order emery, sandblasting is carried out in foamed aluminium board face.Sandblasting terminates rear clear water and rinses well, then puts into 80 DEG C of drying in oven.Obtain the foam aluminium plate of perforation, measure acoustic absorptivity by GBJ88 " Code for measurement of soundabsorbing coefficient and specific acoustic inpedance of standingwave ".
Embodiment 1-5 foam aluminium plate indices is in table 4.
Table 4
Claims (4)
1. a perforation foam aluminium plate, comprise closed cell foam aluminium sheet (1), it is characterized in that, different in the upper setting direction of described foamed aluminium board (1), to favour described foamed aluminium board surface hole (2), described hole (2) form half open-work in the one side of foamed aluminium board or form the open-work of half open-work or through foamed aluminium board on the two sides of foamed aluminium board.
2. perforation foam aluminium plate according to claim 1, is characterized in that, described hole (2) distributive law is 1 ~ 5%.
3. perforation foam aluminium plate according to claim 1, is characterized in that, described hole (2) diameter is 0.5 ~ 3mm.
4. perforation foam aluminium plate according to claim 1, is characterized in that, described hole (2) degree of depth is 1 ~ 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520468910.2U CN204943007U (en) | 2015-07-02 | 2015-07-02 | A kind of perforation foam aluminium plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520468910.2U CN204943007U (en) | 2015-07-02 | 2015-07-02 | A kind of perforation foam aluminium plate |
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| Publication Number | Publication Date |
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| CN204943007U true CN204943007U (en) | 2016-01-06 |
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| CN201520468910.2U Active CN204943007U (en) | 2015-07-02 | 2015-07-02 | A kind of perforation foam aluminium plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822452A (en) * | 2019-03-29 | 2019-05-31 | 深圳市宏通新材料有限公司 | Porous metal matrix diamond lap polishing plate |
-
2015
- 2015-07-02 CN CN201520468910.2U patent/CN204943007U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822452A (en) * | 2019-03-29 | 2019-05-31 | 深圳市宏通新材料有限公司 | Porous metal matrix diamond lap polishing plate |
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