DEPHOSPHORIZATION AND DEEP DECARBURIZATION OF HIGH-ALLOY MELTS UNDER CONDITIONS OF LOW OXIDATION LEVEL

There the purpose are to generalize by theory, to develop the hew dephosphorization manner of high-alloy melts, to develop the melting process of low-carbon corrosion-resistant steels. The opportunity of phosphoruremoval from the alloy melt to the gas phase has been grounded by theory and by experiment for the first time. The dephosphorization manner of high-alloy melts has been offered. The mechanisms of joint oxidation of carbon, chromium, manganese in the argon-oxygen refining have been obtained on the basis of industrial studies. The mechanisms of transition of phosphorus from the alloy melt to the gas phase have been grounded. The study results and the industrial testing allow to recommend the new manner of dephosphorization. The new melting manners of corrosion-resistant steel by the methods of argon-oxygen, vapour-oxygen refining have been offered. The process of argon-oxygen refining has been used in start-up and in learning to apply at the Dneprospetsstal works, in execution of up-dating plan of Pobuzhzki Nickel Works and Chelyabinsk Integrated Iron-and-Steel Works.Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio