Production of foamed aluminosilicate alloy material with controllable density and aperture

Abstract

The invention has provided a method to produce the foamed aluminium-silicon alloy which can control the density and the aperture. The method is: first to heat the 20-45 um blister at 400-450 deg.C, then to mlt the aluminium-silicon alloy and add 3-5% Al powder, next cooling the composite fusant to 600-620 deg.C and adding into 1-3% blister, last to rise the temperature to 650-680 deg.C. So when it cool, we can get the material. We can get the different density and aperture foamed aluminium-silicon alloy by changing the content of Al powder blister and cotnrolling the temperature of fusant or foaming.

Description

technical field

[0001] The invention relates to a preparation method of metal foam aluminum. Background technique

[0002] Aluminum foam and its alloy materials are a new type of engineering material that has developed rapidly in the past ten years and integrates functions and structures. Foamed aluminum and its alloy materials, as structural materials, have the characteristics of light weight and high specific strength; as a functional material, they have multiple functions such as damping and vibration reduction, sound absorption and noise reduction, and impact energy absorption. Structural strength makes up for the lack of mechanical properties of traditional functional materials.

[0003] At present, aluminum foam and its alloy materials are more and more widely used. Aluminum foam and its alloy materials with different pore sizes and densities have different properties in terms of energy absorption, sound absorption, sound insulation, shock absorption, fire prevention...