冶金丛刊
冶金叢刊
야금총간
METALLURGICAL COLLECTIONS
2013年
5期
7-10,26
,共5页
28MnCr5%冶炼%成分%含量变化
28MnCr5%冶煉%成分%含量變化
28MnCr5%야련%성분%함량변화
28MnCr5%smelt%content%content change
基于莱钢特钢事业部50t电炉生产28MnCr5的冶炼过程，分析了不同成分在冶炼过程中五个不同阶段的变化规律。结果表明：电炉出钢时碳含量控制在0．2％左右，精炼时碳含量控制在0．22％～0．25％范围内，可使28MnCr5钢的碳含量实现窄成分控制；磷含量的变化主要集中在电炉冶炼和出钢的过程，后期会有少许回磷现象；Mn、Cr、S、Si等元素的精确控制主要在LF和VD阶段。
基于萊鋼特鋼事業部50t電爐生產28MnCr5的冶煉過程，分析瞭不同成分在冶煉過程中五箇不同階段的變化規律。結果錶明：電爐齣鋼時碳含量控製在0．2％左右，精煉時碳含量控製在0．22％～0．25％範圍內，可使28MnCr5鋼的碳含量實現窄成分控製；燐含量的變化主要集中在電爐冶煉和齣鋼的過程，後期會有少許迴燐現象；Mn、Cr、S、Si等元素的精確控製主要在LF和VD階段。
기우래강특강사업부50t전로생산28MnCr5적야련과정，분석료불동성분재야련과정중오개불동계단적변화규률。결과표명：전로출강시탄함량공제재0．2％좌우，정련시탄함량공제재0．22％～0．25％범위내，가사28MnCr5강적탄함량실현착성분공제；린함량적변화주요집중재전로야련화출강적과정，후기회유소허회린현상；Mn、Cr、S、Si등원소적정학공제주요재LF화VD계단。
In this paper , various chemical content change regularities in 5 different stages are studied during the smelting process of 28 MnCr5 at 50 tons electric furnace production line in Laiwu Steel Special Steel Division.The results showed that:if carbon content is controlled at about 0.2%at the time of elec-tric arc furnace tapping , between 0 .22% and 0 .25% at the end of refining , then carbon content in 28 MnCr5 steel can achieve a narrow content control;the phosphorus content change mainly happens dur-ing smelting and tapping process , there will be a little rephosphorization phenomena during late stage;the precise content control of Mn , Cr, S, Si is mainly carried out during LF and VD stage .
