发明名称 |
METHOD OF STEEL MAKING |
摘要 |
FIELD: non-ferrous metallurgy; making high-quality steels. SUBSTANCE: proposed method includes deoxidation of metal by aluminum in two portions. First portion is introduced in the course of heat tapping in the amount determined by the following expression M+A/(1+15xC), where M is mass of aluminum, kg/t; C is content of carbon before tapping, mass-%; A is coefficient equal to 2.2-2.5 kg/t. Second portion of aluminum is introduced after heat tapping at simultaneous mixing with argon at flow rate of 0.1-0.2 cu m/t.h continued till oxygen activity in metal has reached 5-10 ppm. Then metal is alloyed with silicon-containing ferroalloys. Flow rate of argon is increased by 0.005-0.015 cu m/t.h per kg/t of added ferroalloys. EFFECT: reduced level of fouling metal with non-metallic inclusions due to optimization of deoxidation and alloying processes. 1 tbl
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申请公布号 |
RU2205880(C1) |
申请公布日期 |
2003.06.10 |
申请号 |
RU20010127683 |
申请日期 |
2001.10.11 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "VOLZHSKIJ TRUBN;VOLZH TRUBN AOOT |
发明人 |
KUZNETSOV V.JU.;NEKLJUDOV I.V.;PECHERITSA A.A.;ANISHCHENKO V.V.;KUDRJAVTSEVA A.JU.;PETROV P.V.;SAFRONOV A.A.;KORNEV JU.L. |
分类号 |
C21C7/06;C21C5/52;(IPC1-7):C21C7/06 |
主分类号 |
C21C7/06 |
代理机构 |
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