俄马钢连铸中间包吹氩保护工艺.pdf

2009 4 # 55# “•Ê ±¼À³, T CMaÃa½Îüº», C B „ÀÂÀÃļº¿, …ƒ Â¶É¼À, M A ‚À´±ÄÀ³ (马格尼托哥尔斯克钢铁公司,俄罗斯) :, 0. 000 3%, 0. 020% , 0. 003 2%, , : ;; ; R esearch on P rotection P rocess of Tundish A rgon B low ing at Continuous Caster in MMK “•Ê ±¼À³, T C M aÃa½Îüº», C B „ÀÂÀÃļº¿, …ƒ Â¶É¼À, M A ‚À´±ÄÀ³ (Magnitogorsk Iron& Steel orks, Russia) Abstract: By using theprotectionprocessof argon blow ing such astundish nozzle, shroud, stopperand slagweiretc., nonuniform spotdefect in steel isreducedby 0. 000 3%, and inclusion defect in steel is reduced by 0. 020%, andw asterquantity of slabscausedby defectof thick grain inclusions isdecreased by 0. 0032%, which effectively reduce slab defectsduring continuouscasting and createconsiderable e- conomicvalue. K ey w ords: continuouscasting tundish; argon blow ing protect; nonmetal inclusion; slab defect 1 , (4) : , , ( 1), , , 0. 001% (2) , , , , ,, , (3) CaSiAl, ( 1) 图 1 连铸中间包吹氩原理图 # 56# 2009 4 2 2. 1 , , , , 2006, () , 1 1, 20%, 4 kg/t, , 1 /t /% /t