Application of inoculators-macrochillers at electroslag remelting
Usage of inoculators-chillers (macrochillers) at electroslag remelting can significantly increase the attraction of the process (especially at getting large-scale castings) concerning both cost saving and quality improvement. The cost is reduced due to less power consumption and increase in productivity at the expense of increase of vertical speed of metal crystallization. The quality of obtained metal is improved in the following parameters: the macrostructure is more dispersed and disoriented; the sharp increase in isotropy of mechanical properties; reduction of intergranular fractures and increase of impact toughness value; suppression of development of channel-type macrosegregation defects (cords); lessening of ingots top scrap. At the same time the fulfillment of the electroslag process with usage of inoculators-chillers demands not just additional equipment (dosers) and preparation of chillers themselves (grinding them to the demanded size) but also the development of the technological modes. For that the following were calculated: fall time of macrochiller through slag bath; the dynamics of skull freezing; burn-off time of skull and macrochiller; macrochiller delivery rate. It is established, that while passing through the slag bath the macrochiller and the skull melt down totally and reach the metal bath as a drop of liquid metal.
Electroslag smelt Inoculators-macrochillers Steel Mathematic modeling
Ilia CHUMANOV
Faculty of Metallurgy, South Ural State University, Zlatoust, Russia
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-7
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）