What is Die Casting Porosity? In order for you to know what die casting porosity is, you need to know the basics. Die casting is a process wherein a particular amount of molten metal is put inside a container, then it is applied with great force so as to force it into a mold. After this, the metal is left to cool down and harden then it is removed. The same process is repeated over again. Die casting companies use metals which are non-ferrous, or do not contain Iron, as this is the highest factor for oxidation and rusting. Several examples of non-ferrous metals include zinc, aluminum, lead, magnesium, tin and copper.
What is die casting porosity? It is a kind of factory defect in which die casts contain small pockets of void space and air within the metal or plastic, causing it to become porous. Eventually, these air pockets cause the die casted material to become brittle and weak. Usually, die casting porosity is an unwanted result and is considered as a substandard product.
What causes die casting porosity? Basically, it is caused by poor handling and casting process. There might have been small cracks and crevices in the machine where the air could come in. The mixing process of the metal may have been poor, therefore creates bubbles inside the metal. One needs to check up the machine used for die casting regularly to prevent this kind of problem. It is also recommended to use vacuum devices to suck out the air inside the molten substance to reduce the incidence of die casting porosity.