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優質的鋁合金壓鑄件怎么做出來的
點擊:2258    發布單位:www.bytespress.net    發布時間: 2019/3/1

鋁合金壓鑄件拋丸是為了使鑄件得到進一步的壓實,通常每平方厘米受力為3千克力左右,如果鑄件在加工過程中本身存在質量問題,在拋丸壓實時就會產生起皮現象,這與鋁合金壓鑄件起皮非同一概念,這一點要區分開來。 一般鋁合金壓鑄件拋丸后表面起皮的產生原因有以下幾點:
大型專業鑄造企業都要盡快建立起自己的技術研發中心,投入研發經費,調配技術力量。遇到重大技術難題,可依托此中心實行產學研相結合的方式加以攻關和突破。二是針對行業需要組織攻關的技術課題,探索建立新的研發組織機制,即所需研究經費以將來直接受益的企業負擔為主并積極爭取國家有關部門的支持。
  1、模具或壓射室(熔杯)未清理干凈;  

  2、壓射壓力不夠,(還需注意壓射時動模有否退讓現象);

  3、澆注系統開設有點問題,合金液進入型腔有紊流現象;

  4、模溫問題;

  5、壓射時金屬液飛濺嚴重。
通過分析原因,我們就可以一項一項排除找出解決的方法,控制問題的產生,并壓鑄出優質的鋁合金壓鑄件。

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