武汉科技大学学报(自然科学版)
武漢科技大學學報(自然科學版)
무한과기대학학보(자연과학판)
JOURNAL OF WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY(NATURAL SCIENCE EDITION)
2013年
6期
420-423
,共4页
张敏%曾建华%陈永%杨森祥%李平凡
張敏%曾建華%陳永%楊森祥%李平凡
장민%증건화%진영%양삼상%리평범
高铝钢%连铸可浇性%保护渣%防堵技术%夹杂物变性
高鋁鋼%連鑄可澆性%保護渣%防堵技術%夾雜物變性
고려강%련주가요성%보호사%방도기술%협잡물변성
high-Al steel%CC castability%mould flux%clogging prevention%inclusion modification
为了提高高铝钢可浇性,在转炉出钢及LF精炼过程对钢包渣进行改质处理,连铸采用专用高铝钢保护渣,中间包采用塞棒吹氩+密封圈等水口防堵工艺。工艺试验结果表明,夹杂物组成可控制在12CaO ·7Al2 O3、3CaO · Al2 O3低熔点组成区域,浇铸时长为4.5~6 h时,液面状况正常,无结团,渣条较少且无硬渣条,铸坯表面质量优良,连续浇铸炉数不低于6炉。
為瞭提高高鋁鋼可澆性,在轉爐齣鋼及LF精煉過程對鋼包渣進行改質處理,連鑄採用專用高鋁鋼保護渣,中間包採用塞棒吹氬+密封圈等水口防堵工藝。工藝試驗結果錶明,夾雜物組成可控製在12CaO ·7Al2 O3、3CaO · Al2 O3低鎔點組成區域,澆鑄時長為4.5~6 h時,液麵狀況正常,無結糰,渣條較少且無硬渣條,鑄坯錶麵質量優良,連續澆鑄爐數不低于6爐。
위료제고고려강가요성,재전로출강급LF정련과정대강포사진행개질처리,련주채용전용고려강보호사,중간포채용새봉취아+밀봉권등수구방도공예。공예시험결과표명,협잡물조성가공제재12CaO ·7Al2 O3、3CaO · Al2 O3저용점조성구역,요주시장위4.5~6 h시,액면상황정상,무결단,사조교소차무경사조,주배표면질량우량,련속요주로수불저우6로。
To raise the castability of high-Al steel ,modification treatment was carried out of ladle slag during LD tapping and LF refining ,mould flux specially prepared for high-Al steel was used in contin-uous casting (CC ) ,and nozzle clogging prevention techniques including argon blowing and sealing rings were employed .The results show that ,with the measures taken ,the inclusion components can be controlled in the low melting point area like 12CaO · 7Al2 O3 and 3CaO · Al2 O3 ,and w hen the casting time is 4 .5~6 hours ,the liquid is in sound condition ,characterized by the absence of agglom-eration ,few slag bars and freedom of hard slag bars ,the surface quality of the bloom is excellent ,and the CC heats are no smaller than 6 .