(北京科技大學冶金學院，北京 100083)
摘 要: 采用可變轉(zhuǎn)速高溫粘度計，測定了具有較好流動性的液態(tài)鋁、熔融無水Na2B4O7和熔渣等冶金熔體的表觀粘度進而導出了它們的本構(gòu)方程。實驗中如果試驗結(jié)果偏離牛頓流體的誤差小于試驗的整體誤差， 則將試驗得到的本構(gòu)方程修正為牛頓流體的本構(gòu)方程。討論了由于溫度變化和加入添加物等因素引起非牛頓流體的原因。
關(guān)鍵字: 冶金熔體 本構(gòu)方程 流變行為 非牛頓流體 粘度
（School of Metallurgy, University of Science and Technology Beijing,Beijing 100083, P. R. China）
Abstract:The rheological characteristic of metallurgical melts (Al, Na2B4O7 and slags), which are provided with a good fluidity, was investigated by means of a modified rotational viscometer with variable speed used at high temperature, and then based upon those viscosity data, some constitutive equations for the melts invesligated were established. If the deviation between the m easurements of the melts and the Newtonian fluid was less than the total error of the experiment, the constitutive equation above was revised to be the Newtonian equations. The effect of temperature and additives on the non-Newtonian melts was also discussed.
Key words: constitutive equation metallurgical melts rheological characteristic non-Newtonian fluid viscosity
