Process for preparing foam magnesium

Abstract

The invention is a foam Mg preparing method, including smelting Mg alloy, making vacuum seepage device, selecting filling particles, preheating prefabricated model, casting and seeping, processing and molding, and eliminating filling particles, where the particle size of fillings is 16-120 eye, the preheating temperature of casting mould and prefabricated model 200deg.C- 550deg.C, and the casting temperature 700deg.C-730deg.C. It can use good sound absorbing property of foam metallic materials to solve the exhausting and silencing problems of motorcycle engines, and can act as sandwich material of airplane's structural components.

Description

technical field [0001] The invention relates to metal material processing, especially the preparation process of foamed magnesium. Background technique [0002] In recent years, in order to meet the needs of industrial production and scientific and technological development, people have actively developed metal foam materials with special properties, but the main direction is foam aluminum alloy materials, and there are not many reports on the research on foam magnesium alloy materials. This is because the magnesium alloy is flammable, easy to corrode, complex process and so on. [0003] At present, the commonly used methods for preparing foamed metals are as follows: [0004] 1. Powder metallurgy method: it is made by adding foaming agent to metal powder, forming and sintering to decompose, evaporate or dissolve the foaming agent. It is difficult to obtain foam with a porosity higher than 60% by this method Material. [0005] 2. The metal-clad method, also known as the e...

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Problems solved by technology

The process of this method is difficult to control the uneven pore structure

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