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一、铸造铝合金用泡沫陶瓷过滤片铝合金在熔化和形成铸件的过程中,最突出的问题之一是产生一次夹杂和二次夹杂,使铸件的机械性能降低,加工性能变坏.铸件中的夹杂物往往还成为应力集中源,降低了零件寿命.人们为了去除这些夹杂物,在浇注系统中设置了各种挡渣系统;安放诸如带孔钢片、铁丝网,以及玻璃纤维等过滤器.但这些措施只能挡住大片夹杂物,并且还易引起铝液飞溅和紊流,产生二次夹杂,尤其当铝液高速充型时,无法避免铸件内夹杂缺陷的产生.
First, the casting of aluminum foam ceramic filter Aluminum alloy melting and the formation of the casting process, one of the most prominent issue is the occurrence of an inclusion and secondary inclusions, so that the mechanical properties of the casting lower processing performance deterioration. Of inclusions often also become a stress concentration source, reducing the life of parts.People in order to remove these inclusions in the casting system set up a variety of slag system; placed such as perforated steel, barbed wire, and glass fiber filters. However, these measures can only block large inclusions, and also easily lead to splashing and turbulent flow of molten aluminum, resulting in secondary inclusions, especially when the molten aluminum filling speed, can not avoid the occurrence of inclusions in castings.