Process for preparing composite material of high magnesium aluminium alloy-expanding ore

A high-magnesium aluminum alloy and composite material technology is applied in the field of preparation of high-magnesium aluminum alloy-natural expanded ore composite materials, and can solve the problems of difficult control of cell quality, unsatisfactory foam compression performance, poor thermal insulation effect, and the like, Achieve the effect of reducing depreciation cost and production energy consumption, low cost and low wear and tear

Inactive Publication Date: 2006-06-28
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of difficult control of cell quality, unsatisfactory

Method used

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  • Process for preparing composite material of high magnesium aluminium alloy-expanding ore
  • Process for preparing composite material of high magnesium aluminium alloy-expanding ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The 5182 high-magnesium aluminum alloy is prepared according to the following weight percentages. The specific chemical composition of the alloy is: Mg=4.65%, Mn=0.35%, Cu=0.10%, Si=0.14%, Fe=0.20%, and Al balance. Among them, Mn, Cu, Si, Fe are added in the form of master alloys. Select 8 mesh or more, 8-12 mesh and 8-18 mesh open-pored expanded vermiculite, put it in the vacuum suction casting mold, adjust the particle gap and adjust the air permeability, the expanded vermiculite preheat temperature T b Controlled at 160℃±10℃; melting alloy temperature T c Control 790℃±10℃; when the vacuum degree of the vacuum tank reaches the maximum, open the connector between the liquid alloy and the suction casting port, open the vacuum hand valve to start suction casting, and use the vacuum hand valve to control the flow rate of the suction casting alloy liquid V c At 0.1m / s, after the suction casting is completed, the mold is cooled and demolded. The compression performance is measu...

Embodiment 2

[0016] The rest is the same as in Example 1. The specific chemical composition of the prepared 5083 high-magnesium aluminum alloy is: Mg=4.5%, Mn=0.5%, Cu=0.10%, Si=0.4%, Zn=0.25%, and Al balance. Select 12-14 mesh, 12-18 mesh and 12-24 mesh closed-cell expanded vermiculite. T b =440℃±10℃. T c =690℃±10℃. V c =0.5m / s. The data obtained are summarized in Table 2.

[0017] Granularity

Embodiment 3

[0019] The rest is the same as in Example 1. The specific chemical composition of the prepared 5454 high-magnesium aluminum alloy is: Mg=3.0%, Mn=0.8%, Cu=0.07%, Si=0.12%, Fe=0.20%, Cr=0.08%, and Al balance. Select 14-24 mesh open-pore and closed-pore expanded perlite. T c =750℃±10℃. V c =0.05m / s. The data obtained are summarized in Table 3.

[0020] Perlite

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Abstract

A light and porous high-Mg Al-alloy-expanded ore composition is prepared from high-Mg Al-alloy and puffed vermiculite and pearlite through vacuum percolation casting method. Its density is less than 1.9 g/cu*cm. Its advantages are ease control of foam pore, and high compression strength and thermal insulating effect.

Description

Technical field: [0001] The invention relates to a preparation method of a high-magnesium aluminum alloy-natural expanded ore composite material. Background technique: [0002] At present, in the noise reduction material industry, two types of noise reduction materials have been paid more and more attention. One is foamed aluminum or foamed magnesium; the other is natural vermiculite, turpentine, and perlite after high temperature puffing products or from firepower. Glass hollow microspheres obtained from the separation of fly ash from power plants. In comparison between the two, the former has the advantage that it can be used alone, but the disadvantages are: ①The cell quality is difficult to control in the industrial production of pipes, tapes, and sheets, ②The foam compression performance is not ideal, and ③The heat insulation effect is poor. The advantage of the latter is not only good sound damping performance, but also its thermal insulation performance is incomparable to ...

Claims

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Application Information

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IPC IPC(8): B22D18/06B22D19/16
Inventor 吴耀明王立民毕广利彭秋明房大庆王建利孟健张洪杰
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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