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Method and apparatus for producing high porosity through hole multi-hole aluminum alloy

A technology with high porosity and aluminum alloy, which is applied in the field of metal material processing to achieve the effect of uniform skeleton, high through-hole degree and increased uniformity

Inactive Publication Date: 2005-12-21
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no reliable method for preparing porous aluminum alloys with high porosity (70%-95%).

Method used

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  • Method and apparatus for producing high porosity through hole multi-hole aluminum alloy
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  • Method and apparatus for producing high porosity through hole multi-hole aluminum alloy

Examples

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Effect test

Embodiment 1

[0016] Example 1 A method for manufacturing a high-porosity through-hole porous aluminum alloy includes the following steps: first, weigh a certain mass of aluminum alloy (the aluminum alloy can be an aluminum-silicon alloy containing 6% to 11% silicon or an aluminum-silicon alloy containing Copper 4-10% aluminum-copper alloy), the quality is the actual aluminum alloy casting quality, heat it to melt, keep the aluminum alloy melt temperature at 660°C-750°C, the temperature can be 660°C, 680°C, 700°C ℃, 750℃, put the filler particles into the mold 1, keep warm at 500℃~660℃ until the temperature of the filler particles is uniform, the temperature can be 500℃, 550℃, 600℃, 620℃, 640℃, 660℃, where : Actual aluminum alloy casting quality = theoretical aluminum alloy casting quality + margin, theoretical aluminum alloy casting quality = filler particle accumulation height × filler particle accumulation cross-sectional area × aluminum alloy density × (1-porous aluminum alloy porosity),...

Embodiment 2

[0017] Example 2 A high-porosity through-hole porous aluminum alloy obtained by the method described in Example 1 (the aluminum alloy can be an aluminum-silicon alloy containing 6% to 11% silicon or an aluminum-copper alloy containing 4-10% copper) , its porosity is 70% to 95%, the porosity can be 70%, 75%, 78%, 80%, 85%, 90%, 95%, the shape of the pores is polygonal or spherical, the pores are evenly distributed, and the average pore size 0.5-7mm, can be 0.5mm, 1.0mm, 3mm, 5mm, 7mm, and the through hole can reach 20%-35%.

Embodiment 3

[0018] Example 3 A special device for manufacturing high-porosity through-hole porous aluminum alloys used in the method described in Example 1, including a negative pressure system 3 and a mold 1, one end of the mold 1 is connected to the negative pressure system 3, and inside the mold 1 An upper base plate 6 and a lower base plate 7 are placed, wherein the upper base plate 6 is a barbed wire mesh with a grid side length of 2 to 6 mm, and the side length can be 2 mm, 4 mm, and 6 mm, and the lower base plate 7 is pasted with 100 to 200 meshes (which can be 100 mesh, 150 mesh, 200 mesh) the hole diameter of the barbed wire is 2-6mm orifice plate, the hole diameter can be 2mm, 4mm, 6mm.

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Abstract

The invention discloses a method for manufacturing a high-porosity through-hole porous aluminum alloy. First, the aluminum alloy is heated to melt, and the temperature of the aluminum alloy melt is kept at 660°C to 750°C. Keep warm at ℃~660℃ until the temperature of the filler particles is uniform, and the balance accounts for 5%~20% of the theoretical aluminum alloy casting amount, then place the mold on the suction cup base of the negative pressure device, and then cast the aluminum alloy melt after heat preservation into the mold, and connect the mold to a negative pressure device with a pressure of -2KPa to -40KPa. After the aluminum alloy is solidified, take out the composite of filler particles and aluminum alloy, and remove the filler particles. The invention also discloses a high-porosity through-hole porous aluminum alloy, the porosity of which is 70%-95%. The invention also discloses a high-porosity through-hole porous aluminum alloy manufacturing device. The through hole of the 70%-95% porous aluminum alloy obtained by the invention reaches 20%-35%.

Description

1. Technical field [0001] The invention relates to the field of metal material processing, in particular to a method and device for manufacturing high-porosity through-hole porous aluminum alloys. 2. Background technology [0002] In the process of preparing porous aluminum alloy by the negative pressure infiltration method, due to the limitation of the bulk volume fraction of filler particles (45%-60%), the additional porosity (Pr< 5%) and the porosity (Pr<5%) produced by the solidification and shrinkage of the aluminum alloy, the porosity of the obtained porous aluminum alloy is 55% to 70%. So far there is no reliable method for preparing porous aluminum alloys with high porosity (70%-95%). 3. Contents of the invention [0003] Technical Problem The present invention provides a method and device for manufacturing a high-porosity through-hole porous aluminum alloy. [0004] Technical solution A method for manufacturing high-porosity through-hole porous aluminum al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08C22C21/00
Inventor 何德坪张伟开李乃哲
Owner SOUTHEAST UNIV
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