Historical review of Aluminium degassing and future developments

Liquid aluminium has a very high capacity to dissolve hydrogen but loses this ability as it solidifies. This leads to the potential generation of gas porosity as hydrogen comes out of solution during soldification. This porosity has negative consequences to mechanical properties of the final product. This paper looks at the evolution of degassing techniques from using a lance to inject an inert gas, to the development of box-type degassers and inline degassers. Hydrogen measurements systems will also be discussed as this is an important component of hydrogen removal. The paper will then cover future developments such as ultra sonic and vacuum processing degassing as a potential means ofdegassing

کلیدواژه ها:

degassing ، hydrogen removal ، ACD