Open AccessPerfection of equipment for electromagnetic stirring of liquid steel in CCM molds
Author(s) -
С. И. Шахов,
К. Н. Вдовин,
Ю. М. Рогачиков,
Dmitry Shakhov
Publication year - 2019
Publication title -
černaâ metallurgiâ. bûlletenʹ naučno-tehničeskoj i èkonomičeskoj informacii/černaâ metallurgiâ. bûlletenʹ naučno-tehničeskoj informacii
Language(s) - English
Resource type - Journals
eISSN - 2619-0753
pISSN - 0135-5910
DOI - 10.32339/0135-5910-2019-7-828-833
Subject(s) - mechanical engineering , electricity , stator , meniscus , heat exchanger , engineering , environmental science , electrical engineering , physics , incidence (geometry) , optics
To obtain quality continuously casted billets, electromagnetic stirring (EMS) of melt is used. Most of the industrial CCM operating in Russia are equipped by EMS systems, supplied by foreign companies. EMS stators of foreign production are manufactured as a rule in nonseparable bodies and after their failures the systems must undergo expensive repair abroad at the manufacturers. At VNIIMETMASH the EMS systems of external design were created, in which this problem was solved. The version ЭМПУ 880 (EMPU 880) is completely demountable, that provides conditions for its maintenance and repair under conditions of electric shop of a plant without attraction of expensive materials and equipment. All the materials are domestic made and available. The developed facility comprises 3-phases stator submerged into water, placed in a demountable body of a corrosionresistant steel. The airproofing the body accomplished by a heat-resistant resin. Water supply into the internal area of the body and taking it away is made by end nipples. The terminal unit is arranged in the body having removable covers to connect the power mains. The output ends of the three phases are airtight in the sealing blocks under pressure of 10–12 atm. The designed EMS facility is placed at arranged locations. The peculiarities of the EMS facility design allow to increase up to 585 mm the distance to the plain of maximum rotating forces of the meniscus in the mold. Taking into account that the total energy in the active zone flow decreased and the distance to the meniscus increases, quieter meniscus can be expected at more intensive regimes of the stirring. This circumstance allow improving considerably the quality of the continuously casted billet.