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振動法成型

關(guān)鍵詞 振動法|2011-07-05 16:22:03|基礎(chǔ)知識|來源 中國磨料磨具網(wǎng)
摘要 振動成型法,無需壓力,而是利用振動作用使成型料移動到最合適的堆積密度,這種堆積作用發(fā)生在最初振動階段,時間愈長,作用愈不顯著,堆積密度除決定于振動頻率外,還決定于磨料粒度,成型料的...
  振動成型法,無需壓力,而是利用振動作用使成型料移動到最合適的堆積密度,這種堆積作用發(fā)生在最初振動階段,時間愈長,作用愈不顯著,堆積密度除決定于振動頻率外,還決定于磨料粒度,成型料的干濕程度等。不同大小粒度的配料,經(jīng)振動后,小顆粒的填充于大螵粒的空隙中,增大堆積密度,最合適的振動頻率,可以通過實驗得出,振動的產(chǎn)生可借助于電動機,壓縮空氣或電磁感應(yīng)等。
  振動法成型的特點是,不規(guī)則形狀及復(fù)雜的產(chǎn)品,可以一次成型,而且不需要復(fù)雜的模具;對模具的強度要求一般比模壓法的低;成型速度較快;脫模容易;成型中成型料不易結(jié)團等。
  這種成型方法,不但適用于成型小尺寸的磨具,而且可以成型大尺寸的磨具。
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