鞍钢技术
鞍鋼技術
안강기술
Angang Technology
2015年
5期
46-50
,共5页
低合金钢%氮含量%转炉%精炼
低閤金鋼%氮含量%轉爐%精煉
저합금강%담함량%전로%정련
low alloy steel%content of nitrogen%converter%refining
分析了鞍钢股份有限公司炼钢总厂三分厂低合金钢生产过程中各工序钢水氮含量的变化情况，分析认为转炉工序和LF炉精炼工序对钢水增氮影响较大。通过采取控制转炉点吹时间在40 s以内、出钢过程采用弱脱氧制度以及LF炉造渣工艺前置等措施后，低合金钢成品氮含量由0.00401%降至0.00329%。
分析瞭鞍鋼股份有限公司煉鋼總廠三分廠低閤金鋼生產過程中各工序鋼水氮含量的變化情況，分析認為轉爐工序和LF爐精煉工序對鋼水增氮影響較大。通過採取控製轉爐點吹時間在40 s以內、齣鋼過程採用弱脫氧製度以及LF爐造渣工藝前置等措施後，低閤金鋼成品氮含量由0.00401%降至0.00329%。
분석료안강고빈유한공사련강총엄삼분엄저합금강생산과정중각공서강수담함량적변화정황，분석인위전로공서화LF로정련공서대강수증담영향교대。통과채취공제전로점취시간재40 s이내、출강과정채용약탈양제도이급LF로조사공예전치등조시후，저합금강성품담함량유0.00401%강지0.00329%。
The changes of the content of nitrogen in molten steel in every process dur ing smelting the low alloy steel in No.3 Subsidiary Plant of General Steelmaking Plant of Angang Steel Co., Ltd. are analyzed. According to the analysis these two procedures of both converter steelmak-ing and refining by LF have great influence on the increasement of the content of nitrogen. After taking such measures as controlling the spot blowing time of converter within 40 s, carrying out the weak deoxidizing schedule during tapping and making the slagging process by LF in advance, the content of nitrogen in low alloy molten steel is reduced to 0.003 29%from 0.004 01%.
