CAJ | 학술논문

通过对差示扫描量热（DSC）曲线的分析，建立了渣膜结晶比计算模型。利用配制已知结晶比的标样，考察了差热分析法确定渣膜结晶比的准确性，并在实验室对工业用中碳钢和低碳钢板坯保护渣制备的渣膜结晶比进行了测定。结果表明：差热分析测量再结晶热焓的方法可以用于渣膜结晶比的判定，相对误差为0～5．03％；用于连铸中碳钢的保护渣渣膜结晶比为88．6％，而低碳钢保护渣的渣膜结晶比为55．0％，其大小趋势与实际要求一致。
통과대차시소묘량열（DSC）곡선적분석，건립료사막결정비계산모형。이용배제이지결정비적표양，고찰료차열분석법학정사막결정비적준학성，병재실험실대공업용중탄강화저탄강판배보호사제비적사막결정비진행료측정。결과표명：차열분석측량재결정열함적방법가이용우사막결정비적판정，상대오차위0～5．03％；용우련주중탄강적보호사사막결정비위88．6％，이저탄강보호사적사막결정비위55．0％，기대소추세여실제요구일치。
The method to determine the crystallinity of solid slag film is established by analyzing the DSC curve of solid slag film and corresponding quenched slag.The accuracy of the method is investigated by measurements of prepared samples whose crystallinity is given.In addition,the solid slag films of mold slags used to cast medium carbon steel and low carbon steel are obtained by heat flux simulator in laboratory,and the crystallinity of the two kinds of slag film are also measured by DSC method. Experimental results indicates that the crystallinity of solid slag film can be determined by comparing the crystallization enthalpy of solid slag film and corresponding quenched slag during heating process,and the relative error is within 5.03%.For medium carbon steel,the crystalline fraction of solid slag film is 88.6%, while the crystalline fraction of solid slag film corresponding to low carbon steel is 55.0%.The results are consistent with actual structure of solid slag films.