Mold powder for continuous casting and method of continuous casting using this powder

申请公布号：: EP0899041(A1)
申请号：: EP19980402112
申请日期：: 1998.08.26
申请公布日期：: 1999.03.03
申请人：: SUMITOMO METAL INDUSTRIES LIMITED
发明人：: HANAO, MASAHITO;KAWAMOTO, MASAYUKI;TANIZAWA, YOSHINORI;KUMAKURA, SEIJI
分类号：: B22D11/111;C21C7/076;(IPC1-7):B22D11/10
主分类号：: B22D11/111
摘要：: <p>A mold powder for continuous steel casting, containing CaO, SiO2 and fluoride as the main components. The ratio by weight of CaO', represented by the following equation, to SiO2 is 0.9-2.8 and the CaF2 content is about 5-60 wt.%. The powder contains Na2O in an amount of 0-25 wt.% and C in an amount of 0-10 wt.%. <MATH> wherein T.CaO represents the total Ca content in the mold powder as converted to CaO(wt.%) and F represents the total F content in the mold powder(wt.%). Also disclosed is a method for continuous steel casting which makes use of the mold powder. <IMAGE></p>