METHOD FOR CASTING ARTICLES FROM ALUMINIUM ALLOYS

• Main Authors: SIDOROV, Aleksandr Yur'evich, KOSTIN, Igor' Vladimirovich, BELYAEV, Sergej Vladimirovich, DANILOV, Andrej Viktorovich, KROKHIN, Aleksandr Yur'evich, BEZRUKIKH, Aleksandr Innokent'evich, FROLOV, Viktor Fedorovich
• Format: Patent
• Language: English; French; German
• Published: 08.09.2021
• Subjects: ALLOYS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The method relates to the field of aluminium metallurgy and can be used for producing ingots from aluminium alloys of a superior grade in production of articles for the aerospace and automobile industries. The use of this invention relates to the out-of-furnace modification technology. The method for casting articles from aluminium alloys comprises the following steps: a) preparing an aluminium melt in a mixer; b) adding a master alloy into the metal melt; c) degassing the aluminium melt comprising the master alloy; d) repeating the addition of the master alloy; e) filtering the aluminium alloy obtained in step d); and f) feeding the filtered-out melt into a crystallizer. The invention provides for the increased efficiency level of modification of aluminium melts when using a master alloy without additional design changes in the existing aluminium ingot casting lines, which makes it possible to reduce the cost of modification of alloys, and also for the decreased grain of alloys produced and for the improved plastic and mechanical properties of cast ingots and articles produced therefrom.