六十年前发展起来的压铸工艺,由于它在技术、经济上所表现出其它铸造工艺方法所不及的许多优越性,因而愈来愈得到人们的重视。近年来,科学技术新成果在压铸上的应用又使得压铸技术水平不断提高,因而应用范围越来越广。但是,压铸件内气孔的存在,在一定范围内又限制了它的应用,特别是受压、受力零件 Die casting, which was developed six decades ago, is gaining more and more attention due to its technical and economic advantages that many other casting methods fail to achieve. In recent years, new achievements in science and technology in the die-casting application has led to the continuous improvement of die-casting technology, which has become more widely used. However, the presence of pores in the die casting, in a certain range and limits its application, especially the compression, force parts