| 摘要 |
PURPOSE:To obtain a metallic porous body which is lightweight and has excellent mechanical strength, impact resistance and sound absorbing effect by forming a three-dimensional network porous metal having connected holes onto either side of a foaming metal formed with the integrated body of independent bubbles by shot blasting. CONSTITUTION:Either side of the foaming metal plate cut from the ingot of the foaming metal consisting of the integrated body (having a cell structure) of many independent bubbles is subjected to shot blasting and a part of the metallic shell of each independent bubble (in the wall surface of the bubbles) is damaged to connect the each independent bubble each other to form a three- dimensional network porous metal. The foaming metal and porous metal are formed from the same kind of metal and are preferably formed from Al, Mg, Zn, Sn, Cu, Pb, Ni and either the alloy thereamong. By this method, the porous body having excellent mechanical characteristics, impact resistance and sound absorbing effect can be obtd. |
