Open AccessResource and energy saving technologies in the manufacture of large-sized castings from magnesium alloys
Author(s) -
Б. Л. Бобрышев,
Denis Vladimirovich Popkov,
В. С. Моисеев,
О. В. Кошелев,
Д. Б. Бобрышев,
К. В. Моисеев
Publication year - 2020
Publication title -
vestnik koncerna vko «almaz - antej»
Language(s) - English
Resource type - Journals
ISSN - 2542-0542
DOI - 10.38013/2542-0542-2020-1-77-86
Subject(s) - smelting , refining (metallurgy) , magnesium alloy , process engineering , magnesium , materials science , metallurgy , mechanical engineering , environmental science , engineering
This article considers an approach to the development of low-waste resource- and energy-saving technologies for the manufacture of large-sized geometrically-complex hull castings from magnesium alloys in combined forms (chill moulds with an internal sand сore). This approach implies solving a set of tasks, such as the provision of conditions for directional solidification and effective risering; the creation of low-cost non-deficient gas protective environments; automatizaton of simultaneous flux-free smelting, modification and refining processes; reduction of gas consumption required for heating moulds; as well as the improvement of labour conditions. In order to solve these tasks, the authors: 1) developed and implemented software application packages; determined the composition of gas protective environments and gas modifying mixtures; calculated the modes of melt processing; 2) developed and implemented automated installations for processing the melt and ensuring the controlled and adjustable heating of large-sized moulds under a predetermined temperature gradient at the height of the mould; 3) developed a technology for recycling magnesium alloy shavings.