CN1864895A - Process for preparing through-hole foam aluminium plate - Google Patents
Process for preparing through-hole foam aluminium plate Download PDFInfo
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- CN1864895A CN1864895A CN 200510025864 CN200510025864A CN1864895A CN 1864895 A CN1864895 A CN 1864895A CN 200510025864 CN200510025864 CN 200510025864 CN 200510025864 A CN200510025864 A CN 200510025864A CN 1864895 A CN1864895 A CN 1864895A
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Abstract
The invention relates to a method for preparing porous foam aluminum sheet. Wherein, it selects aluminum alloy to be heated via smelting furnace at constant temperature; selects food particle salt as foam porous stuff to be baked at high temperature and constant temperature; adds heated particle salt into mould, to be pressurized by compressor into block; adds melt aluminum to be pressurized by compressor, to make the melt aluminum into the space between particle salts, to form compact foam aluminum skeleton; then solidifies it to be extracted out from the mould to be cooled. The produced porous foam aluminum plate has uniform factor of porosity, with high porous rate, stable structure, adjustable thickness, improved quality, reduced producing cost and the application for batch production.
Description
One, technical field:
Through hole type foam aluminium plate production technology of the present invention, what relate to is foam aluminium plate manufacturing technology field, particularly hole voidage 80-90%, through-hole rate 85-90%, major bore 0.4-2.5mm, density 0.5-1g/cm
3Through hole type foam aluminium plate through hole preparation technology.
Two, background technology:
It is better that porous open-pore metal foam aluminium is used prospect in market at present, aspect field of acoustics (sqouynd absorption lowering noise), use very wide, as music hall, cinema, dancing hall, gymnasium, conference centre, road noise barrier, Generators, pneumatics machine room, watercraft engine room.The noise elimination noise reduction of air conditioner ventilation equipment etc.
The investigation of materials of porous fine-crystal spume aluminium alloy since the sixties existing more than 50 year, is: 1) foaming at first: because foaming controlling of production process difficulty, infusion of financial resources has very big, so limited the development of foam metal material.2) sintering process: little because of the aperture, sheet material is thin, mechanical strength is low, evenly reach the difficult control of porosity, so manufacturing cost is higher, brings selling cost to improve, and it is bigger that difficulty is used in market.
Along with people gradually to the raising of sound-absorbing material environmental consciousness, porous through-hole foam aluminum has a wide range of applications, it can change the secondary pollution that former sound-absorbing material brings human body and environment as: mineral wool, rock wool, mineral wool and the instability of sound absorbing capabilities, especially in outdoor and high temperature, humidity, high wind speed place.So at present foam metal material becomes the material of exploitation of trying to be the first both at home and abroad, and dropped into great amount of manpower and fund is researched and developed more, and very big development has been arranged on the preparation method, technology is gradually improved.
Production technologies such as existing porous through hole, closed pore, foaming are more, but because the integrity of technology, frock, technology is all very not comprehensive, so all can not reduce production costs, implement large-scale production.As A) foaming preparation technology: be aluminum or aluminum alloy by furnace heats to 650～700 about, add tackifier, blowing agent adds gas cooled and solidified in mould by stirring, and carries out the metal working cutting then and obtains product.B) sintering process preparation technology (can claim powder metallurgic method again).After the certain granules aluminum or aluminum alloy evenly mixed with the blowing agent of certain proportion, the pressed compact moulding, and in controlled atmosphere stove by certain technology sintering, obtain product after the cooling.C) seepage flow casting, preparation technology is the particle of certain size (as salt, glass, pottery etc.).After carrying out high temperature sintering with graphite jig, aluminium liquid being injected in the mould, is that aluminium liquid is annotated and watered in the slit of particle, after the condensation, by certain technology particle is removed and to be obtained product.All there is open defect in said method: a. foaming its preparation process is because process conditions control is difficult, and the equipment infusion of financial resources is big, and the product cost height can't carry out scale production at present.B. sintering process technology preparation method, the product pore size uniformity coefficient and the porosity of production all have very big uncertainty, and mechanical strength is low, and yield rate is low, the product cost height.C. the seepage flow casting preparation method is 1. because when the high temperature solidified particle, coefficient of thermal expansion control difficulty causes not progressive die tool of warm Gao Shifang, and the cast of particulates fracture aluminium water was inhomogeneous when temperature was low.2. when removing solidified particle, can't eliminate clean solidified particle thing, cause in the product and expand, form waste product, and can't produce big specification and large stretch of large-scale production.
Three, summary of the invention:
The objective of the invention is to overcome above-mentioned defective, provide a kind of method simple, easy to operate, can carry out the foamed aluminium board preparation technology method of large-scale production.It is characterized in that: adopt high pressure seepage flow to prepare the foamed aluminium production method, porosity 80-90%, through-hole rate 85-90%, major bore 0.4mm-2.5mm, density 0.5-1g/cm
3Preparation technology as follows:
Select for use the aluminium alloy of high-quality to make ground, heat to 670c °-700c ° with smelting furnace, constant temperature is stable after the scarfing cinder.
Select for use high-quality food grain salt to make foam hole filler, and it is stable doubly to dry by the fire 350-450c ° of constant temperature by high temperature
Make pressurization power with forcing press, and the open-close module that is installed on the forcing press is heated to 150-250c °; Aluminium and granulated salt proportioning 1: 2-2.8 put into mould to the granulated salt of heating, and are forced into bulk by forcing press, the aluminium water that heats, are cast in the mould and by press with mechanical driving device and pressurize.Aluminium water is filled in the slit of granulated salt fast, forms firm foamed aluminium skeleton, solidify the back and from mould, take out the product cooling.
Can carry out the metalworking cutting of various requirement according to the purposes needs.Cutting apparatus adopts band saw and other metal working equipment
The foamed aluminum materials of metalworking is carried out water treatment, and pressurize in water and make water foaming, reach quick fusing and decompose particle, carry out the laggard horizontal high voltage of centrifuge dripping and dash and drench product handling sheet material well, cleaning is clean.
Clean foamed aluminium is entered the drying room oven dry, make product stable.
The positive effect of implementing this technology is: compare with the existing various foamed aluminium process for producing of producing and manufacturing experimently, the even porosity height in foamed aluminium board of the present invention aperture, through-hole rate height, Stability Analysis of Structures, the aperture is adjustable, thickness of slab is adjustable, and control has improved product quality significantly easily, improved the finished product rate, (this preparation technology yield rate reaches more than 95%), thus the production cost reduced, possessed mass production conditions.He has fundamentally solved the structural stability of foamed aluminium, and control easily can be cut by band sawing machine again simultaneously, and the thickness of sheet material is adjustable at 4mm-50mm.
By above technology and test, the technical indicator that the present invention adopts high pressure seepage flow extrusion process to reach is:
Voidage 80-90%.Through-hole rate 85-90% major bore 0.4mm-2.5mm.
Bulk density 0.5-1g/cm
3(the 1.6mm aperture is 0.60-0.8g/cm
3)
Quality hydroscopicity W1＜0.1%
Volume hydroscopicity W2＜0.1%
Mechanical property is measured with reference to GB/T1038-1040:
Compression strength δ c8.61MPa (compressing under 10% condition)
Bending strength δ W8.06MPa
Tensile strength δ b3.41MPa
Acoustical behavior (pressing GBT47 and GBJ88):
Average sound absorption coefficient a＞0.06 (125-400HZ frequency range mensuration)
(the 250-2000HZ frequency range is measured in noise reduction coefficient NRC＞0.64
Ageing resistace is pressed GB/T14522 and is measured through 250 hours, no variable color, and nothing comes off, no aging phenomenon
Electromagnetic wave shielding presses GB12190 and SJ20524 measures:
Shield effectiveness 40-50dB (80KHZ-1.GHZ frequency range mensuration)
Four, the specific embodiment:
It is golden to this bright being further described below to select for use ZL102 aluminium to press:
Select for use ZL102 aluminium to press 30 kilograms of kg of gold, be placed on and heat in the smelting furnace to 670 ℃, it is stand-by that constant temperature is carried out in scarfing cinder.
Select 75 kilograms of kg of table salt for use, be placed on heat in the smelting furnace stand-by to 400 ℃ of constant temperature.Select appearance and size length and width 500 * 500 open-close modules for use, heat after 200 ℃, put into 400 ℃ of granulated salts, and pressurize with forcing press, plus-pressure 15KN makes particle become block.
Cast aluminum water rapidly on block, and with the forcing press pressurization, plus-pressure 200KN all is injected in the particle slit aluminium water, pressurize was solidified after 3 minutes, and the demoulding is taken out product and is cooled off.
Foam block is finalized the design and is cut into volume 500 * 500 * 150mm after adopting the cutting milling machine to the demoulding.
To cutting the back approved product with computerized numerical control sawing machine moulding volume 500 * 500 * 10mm that cuts into slices.
Section sheet material is placed on the particles filled thing of foaming cleaning in the clear water that flows, and scavenging period carried out centrifugal dehydration after 2 hours, further improved cleaning quality.
Enter the drying room oven dry, make product stablize moulding, its porosity 80-90%, through-hole rate 85-90%, major bore 0.4mm-2.5mm, density 0.5-1g/cm
3
Claims (6)
1. process for preparing through-hole foam aluminium plate of the present invention, comprise that the aluminium alloy is a ground, granulated salt is a filler, it is characterized in that: adopt high pressure seepage flow to prepare the foamed aluminium production method, porosity 80-90%, through-hole rate 85-90%, major bore 0.4mm-2.5mm, density 0.5-1g/cm
3Preparation technology as follows: by smelting furnace melting aluminum alloy, particle heating and in heating mould, add be pressed into bulk after, pressurizeing behind the cast aluminum water forms a kind of extrusion process of high pressure seepage flow, carry out the metal working machining then, and wash fusing, rinse filler well, drying forming.
2. process for preparing through-hole foam aluminium plate according to claim 1 is characterized in that: the aluminium alloy is a ground, and food grain salt is filler, proportioning 1: 2-2.8.
3. process for preparing through-hole foam aluminium plate according to claim 1 is characterized in that: particle heats 350～450c °, adds to be pressed into bulk.
4. process for preparing through-hole foam aluminium plate according to claim 1 is characterized in that: carry out the cast of aluminium water after mold heated 150～250c °, pressurization seepage flow.
5. process for preparing through-hole foam aluminium plate according to claim 1 is characterized in that: to the metal working of foamed aluminium blank, adopt the method for band sawing machine rapid section.
6. process for preparing through-hole foam aluminium plate according to claim 1 is characterized in that: the back foamed aluminium of cutting into slices is carried out the clear water foaming clean and high pressure washing, centrifuge dripping, the method for drying room oven dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510025864 CN1864895A (en) | 2005-05-17 | 2005-05-17 | Process for preparing through-hole foam aluminium plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510025864 CN1864895A (en) | 2005-05-17 | 2005-05-17 | Process for preparing through-hole foam aluminium plate |
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| Publication Number | Publication Date |
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| CN1864895A true CN1864895A (en) | 2006-11-22 |
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| CN 200510025864 Pending CN1864895A (en) | 2005-05-17 | 2005-05-17 | Process for preparing through-hole foam aluminium plate |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844424A (en) * | 2010-03-26 | 2010-09-29 | 杭州龙邦合金科技有限公司 | Compound foamed aluminum particle board and manufacturing process thereof |
| CN101240384B (en) * | 2007-02-10 | 2012-01-25 | 巨科集团有限公司 | Processing method and application of foamed aluminum |
| CN102815048A (en) * | 2011-06-10 | 2012-12-12 | 比亚迪股份有限公司 | AlSiC composite material, preparation method thereof, and Ni-plated AlSiC composite material |
| CN104004937A (en) * | 2014-05-04 | 2014-08-27 | 昆明理工大学 | Preparation method of high-porosity through-hole aluminum or aluminum alloy foam |
| CN105238945A (en) * | 2015-06-25 | 2016-01-13 | 贾维 | Full-through-hole foamed aluminum and preparation technology |
| CN106670466A (en) * | 2017-01-21 | 2017-05-17 | 杨林 | Preparation method of foamed aluminum |
| CN107338365A (en) * | 2017-07-18 | 2017-11-10 | 张勇 | A kind of plunger type THROUGH METHOD preparation facilities of foam aluminium plate |
| CN107574329A (en) * | 2017-09-06 | 2018-01-12 | 北京科技大学 | A kind of hypergravity seepage flow prepares the method and device of through-hole foamed metal |
| CN107598504A (en) * | 2017-10-31 | 2018-01-19 | 辽宁融达新材料科技有限公司 | A kind of integral foam aluminium radiator fin and preparation method thereof |
| CN107858541A (en) * | 2017-11-06 | 2018-03-30 | 安徽福瑞尔铝业科技有限公司 | A kind of manufacture method of the foam aluminium plate with high sound-absorption coefficient |
| CN108411143A (en) * | 2018-06-01 | 2018-08-17 | 珠海格力电器股份有限公司 | Open-cell foamed aluminum air deflector and preparation method thereof |
| CN110678036A (en) * | 2018-07-02 | 2020-01-10 | 德尔福技术有限责任公司 | Circuit assembly with heat sink |
| US11121058B2 (en) | 2019-07-24 | 2021-09-14 | Aptiv Technologies Limited | Liquid cooled module with device heat spreader |
| US11382205B2 (en) | 2020-09-16 | 2022-07-05 | Aptiv Technologies Limited | Heatsink shield with thermal-contact dimples for thermal-energy distribution in a radar assembly |
-
2005
- 2005-05-17 CN CN 200510025864 patent/CN1864895A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240384B (en) * | 2007-02-10 | 2012-01-25 | 巨科集团有限公司 | Processing method and application of foamed aluminum |
| CN101844424B (en) * | 2010-03-26 | 2013-01-09 | 林灯 | Compound foamed aluminum particle board and manufacturing process thereof |
| CN101844424A (en) * | 2010-03-26 | 2010-09-29 | 杭州龙邦合金科技有限公司 | Compound foamed aluminum particle board and manufacturing process thereof |
| CN102815048A (en) * | 2011-06-10 | 2012-12-12 | 比亚迪股份有限公司 | AlSiC composite material, preparation method thereof, and Ni-plated AlSiC composite material |
| CN104004937A (en) * | 2014-05-04 | 2014-08-27 | 昆明理工大学 | Preparation method of high-porosity through-hole aluminum or aluminum alloy foam |
| CN104004937B (en) * | 2014-05-04 | 2016-09-21 | 昆明理工大学 | A kind of preparation method of high porosity through hole aluminum or aluminum alloy foam |
| CN105238945A (en) * | 2015-06-25 | 2016-01-13 | 贾维 | Full-through-hole foamed aluminum and preparation technology |
| CN105238945B (en) * | 2015-06-25 | 2018-01-09 | 贾维 | Full fine-crystal spume aluminium alloy and technology of preparing |
| CN106670466A (en) * | 2017-01-21 | 2017-05-17 | 杨林 | Preparation method of foamed aluminum |
| CN107338365B (en) * | 2017-07-18 | 2018-12-18 | 张勇 | A kind of plunger type THROUGH METHOD preparation facilities of foam aluminium plate |
| CN107338365A (en) * | 2017-07-18 | 2017-11-10 | 张勇 | A kind of plunger type THROUGH METHOD preparation facilities of foam aluminium plate |
| CN107574329A (en) * | 2017-09-06 | 2018-01-12 | 北京科技大学 | A kind of hypergravity seepage flow prepares the method and device of through-hole foamed metal |
| CN107598504A (en) * | 2017-10-31 | 2018-01-19 | 辽宁融达新材料科技有限公司 | A kind of integral foam aluminium radiator fin and preparation method thereof |
| CN107858541A (en) * | 2017-11-06 | 2018-03-30 | 安徽福瑞尔铝业科技有限公司 | A kind of manufacture method of the foam aluminium plate with high sound-absorption coefficient |
| CN108411143A (en) * | 2018-06-01 | 2018-08-17 | 珠海格力电器股份有限公司 | Open-cell foamed aluminum air deflector and preparation method thereof |
| CN110678036A (en) * | 2018-07-02 | 2020-01-10 | 德尔福技术有限责任公司 | Circuit assembly with heat sink |
| US10849217B2 (en) | 2018-07-02 | 2020-11-24 | Aptiv Technologies Limited | Electrical-circuit assembly with heat-sink |
| US11121058B2 (en) | 2019-07-24 | 2021-09-14 | Aptiv Technologies Limited | Liquid cooled module with device heat spreader |
| US11626345B2 (en) | 2019-07-24 | 2023-04-11 | Aptiv Technologies Limited | Liquid cooled module with device heat spreader |
| US11382205B2 (en) | 2020-09-16 | 2022-07-05 | Aptiv Technologies Limited | Heatsink shield with thermal-contact dimples for thermal-energy distribution in a radar assembly |
| US11737203B2 (en) | 2020-09-16 | 2023-08-22 | Aptiv Technologies Limited | Heatsink shield with thermal-contact dimples for thermal-energy distribution in a radar assembly |
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