| 摘要 |
The invention relates to a process for producing low-gas and pore-free aluminium cast alloys by vacuum treatment of the melt. The object of the invention is to provide a process and an apparatus for the production of low-gas and pore-free aluminium cast alloys, which make it possible to keep the contact of the aluminium melt with the humidity in the air extremely low, from the alloying process via refining and up to continuous casting of the bars, while making use of the environmentally compatible (environment-friendly) and effective method of vacuum-degassing and preventing, by means of a high cooling rate, the formation of gas pores. This object is achieved according to the invention by feeding the melt, after alloying the metal melt in a melting furnace, directly to a vacuum furnace via a system of channels, by adding refining components in the vacuum furnace and there setting the casting temperature required for continuous casting, by maintaining the vacuum in the vacuum furnace by periodic measurements of the metal density for a further 5 to 240 minutes, and by then feeding the metal melt via the system of channels directly to the continuous casting installation. |
