Open AccessInteraction of rail steel melt with refractory lining
Author(s) -
А. М. Григорьев,
К. В. Григорович,
Asckar Em,
А. О. Морозов
Publication year - 2021
Publication title -
izvestiâ vysših učebnyh zavedenij. černaâ metallurgiâ
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.3
H-Index - 7
eISSN - 2410-2091
pISSN - 0368-0797
DOI - 10.17073/0368-0797-2021-7-484-487
Subject(s) - materials science , metallurgy , aluminium , non metallic inclusions , refractory (planetary science) , refractory metals , slag (welding) , metal , chemical composition , chemistry , organic chemistry
The rail steel properties are adversely affected by rigid non-metallic inclusions, containing aluminum oxides. Therefore, aluminum content is limited to 0.004 % wt. in rail steel grades. Aluminum can get into steel from charge materials and refractory lining. In this work, we’ve analyzed how the chemical composition of refractories used in rail steel making influence steel quality on example of one domestic enterprise. To determine the main types of non-metallic inclusions created in E76F rail steels, we have performed fractional gas analysis of the samples taken in various process steps. It was found that the slag composition after degassing changes insignificantly, while the most part of non-metallic inclusions in rail steel is represented by aluminates.