第9期 卢金雄等：旋转流水口对结晶器钢水温度场影响的数值模拟 .941. 2)Baoshan Iron Steel Co.Ltd.Shanghai.Shanghai 201900.China ABSTRACI The effect of swirling nozzles with different processing parameters on the flow field in a mold is studied using numerical simulation.The results show that the high temperature dissymmetry in the upper mold is increased a little by using a swirling nozzle,but the meniscus temperature and its uniformity are increased. The temperature difference between nozzle inner and meniscus is 15C for a traditional nozzle and 10C for a swirling nozzle.Increasing the casting speed or decreasing the blade height can increase the temperature at meniscus.When the swirling angle is 120or the distance between blade and nozzle bottom is 390mm,the tem- perature of molten steel is the highest at meniscus. KEY WORDS mold;swirling nozzle:temperature field;numerical simulation (上接第919页) Precise analysis method for cubic system material texture YIN Xiandong,YOU Qinglei),JIA NG Qiwu2),KANG Yonglin) 1)Materials Science and Engineering School.Beijing Science and Technology University,Beijing 100083.China 2)Angang Steel Co.Ltd.Cold-rolling Silicon Steel Mill.Anshan 114002.China ABSTRACI The two-step method of calculating ODF (orientation distribution function)from pole figure as the basic principle was used to precisely analyze cubic system material texture.The Euler space was divided by1 minimum unit.All of the divided spot's orientation density were calculated all over the orientation space.In ad- dition,the corresponding analysis system was established.By means of the analysis system the textures of cold- rolled and annealed IF steel specimens produced by Angang were calculated and were compared those with the sophisticated ODF calculation system by the Euler angle 5minimum unit.The results show that the analysis system by the Euler angle 1minimum unit can more exactly express the texture distribution than by the 5min- imum unit. KEY WORDS texture;cubic system:analysis of ODF;IF steel sheet2） Baoshan Iron ＆ Steel Co．Ltd．Shanghai‚Shanghai201900‚China ABSTRACT The effect of swirling nozzles with different processing parameters on the flow field in a mold is studied using numerical simulation．The results show that the high-temperature dissymmetry in the upper mold is increased a little by using a swirling nozzle‚but the meniscus temperature and its uniformity are increased． The temperature difference between nozzle inner and meniscus is15℃ for a traditional nozzle and 10℃ for a swirling nozzle．Increasing the casting speed or decreasing the blade height can increase the temperature at meniscus．When the swirling angle is120°or the distance between blade and nozzle bottom is390mm‚the tem￾perature of molten steel is the highest at meniscus． KEY WORDS mold；swirling nozzle；temperature field；numerical simulation （上接第919页） Precise analysis method for cubic system material texture Y IN Xiandong 1）‚Y OU Qinglei 2）‚JIA NG Qiw u 2）‚KA NG Yonglin 1） 1） Materials Science and Engineering School‚Beijing Science and Technology University‚Beijing100083‚China 2） Angang Steel Co．Ltd．Cold-rolling Silicon Steel Mill‚Anshan114002‚China ABSTRACT The two-step method of calculating ODF （orientation distribution function） from pole figure as the basic principle was used to precisely analyze cubic system material texture．The Euler space was divided by1° minimum unit．All of the divided spot’s orientation density were calculated all over the orientation space．In ad￾dition‚the corresponding analysis system was established．By means of the analysis system the textures of cold￾rolled and annealed IF steel specimens produced by Angang were calculated and were compared those with the sophisticated ODF calculation system by the Euler angle5°minimum unit．The results show that the analysis system by the Euler angle1°minimum unit can more exactly express the texture distribution than by the5°min￾imum unit． KEY WORDS texture；cubic system；analysis of ODF；IF steel sheet 第9期 卢金雄等： 旋转流水口对结晶器钢水温度场影响的数值模拟 ·941·